RC India

hi
   i am very new to rc planes for this i buy few toys of 27mhz band and i make a servo and reciever out of
it i made a hang glider and i fitted all i fly it from my house
this rc is not of good range and servo is heavy and respond badly soooo   :banghead:


but my issue is improving my glider
 :salute:
sir please suggest me where i can buy radio and servo in the price u mansion  i mean in (6000 rs )
 so that i can test my glider from a hill side.

I  made my hang glider using thin plastic bag in which my mom bring vegetables and bamboo sticks of broom for cleaning house , some tape
As the weight of servo and battery was much so I made another hang glider and make it biplane hang glider so that it can carry the weight
It fly’s well and makes sharp turn s because it is nose heavy
Now I want to build batter one
For this I need improved transmitter and servo.

@wingmanbunty
1. See sites of RC outlets listed in this forum.
2. RcBazaar has a Tx/Rx for under Rs 3000
3. Contact Sharma Model Aero (one of the oldest suppliers in India) at Jai Narayan Bldg, Ratanada Road, Jodhpur, Tel 2513519, 2517519

Welcome to this forum. Search, search, search. You will find lot of info right here on this forum.

Please go through our wiki portion, pointed in black ribbon at top.
Quick Link is Here :
http://www.rcindia.org/wiki/How_much_bare_minimum_have_to_spend_to_start_with%3F
and for shops of india you can check
http://www.rcindia.org/rc-outlets-and-resellers/mega-list-of-all-rc-outlets-in-india/

I personally purchased from RCElectro, Hobbysea, RCForall, Anam, RCBazaar, aeroworks and found very good relation and customer care from them. Though I have not purchased from RCDhamaka, still it is a very good shop as my friends have purchased a lot from them.

However, to minimize shipping cost, you have to check the items cost and shipping charges total.

Thanks

Radio transmitter

   :hatsoff:  I want to know more about it,

Can we  change the frequency of transmitter to any mode , I mean can I operate it on any  china toy Which work on 2.7 GHz or near frequency 2.4 or any toy frequency so that I can use their receiver which cost not more that 180 rs  so that in case of fail of my
      Experiment it will not hurt me more I replace other receiver
if this type of transmitter is there it is one time investment  and it will work for me for long time I am ready to invest  15000 rs for this product  what u think sir  
What is tx/rx transmitter and its range,
 What is the range of a good transmitter, can we increase the range of transmitter I want to operate my glider from hill side so I need good range any device to increase the range of transmitter in the market
 What is glow plug engine, what is gas engine, what is glow starter how much it cost?
What fuel is used?

You can see out thread
http://www.rcindia.org/radios-and-receivers/simplest-tx-rx-diy-anyone-interested/

if you have some electronics like ,motor esc and servos , i would like to offer you my scratch build , it is working fine , not much breakage .it is free, but you have to come and collect it .you also need to install electronics on it , i have many models now , and it would be great if somebody need it .
 here is the build thread link

http://www.rcindia.org/electric-planes/ez-fly-foam-plane-build-2nd-time/

hi
   sir what u think about R/C GLIDER "APPLE BOX"
 1.5 C.C. TO 2.5 C. C.disel  ENGINE
offered by sharma aero
which is from my place ie jodhpur
http://aeromodelsupermarket.com

what is the difference between Diesel Engines and Glow Plug Engine ???

Sorry if i posted in wrong forum, i need help in my rc planes(i have 2 bullet planes and i want to know exact electronics suitable), i have an another rc place which my crew members flew quite nicely, but i have some problems in that. Plus the main thing i and facing problems with my radio

mr roby i will sure help u call me 09819991737

Hi      :help:

  I have a china flyer which is still in a good condition its battery is not working
Anybody please tell me which type of voltage and mah rechargeable battery it
Require to fly it back in the sky
 It fly by adjusting the power of motors by remote no control system(elevator, rudder)
I am eagerly waiting for response

you can use 2s 700mah lipo. :thumbsup:

hi
   i am now working with hang gliders  anybody build hang glider or have some idea suggestion most welcome  :hatsoff:
regarding the control surface to turn the glider

 i experiment by placing the rudder in front of the glider
second i place rudder at the tail of the glider
third i control roll my adjusting the wing area of the glider (aileron type) to check sensitivity of control

i want turn glider very sensitive because i am experimenting in a narrow space about 80ftX100ft and my glider area is 4.5 ft

any suggestion

hi

      i am now planing to buy some thing s to improve my rc glider , i got best support so far from rc india thanks

i will buy a gas glow engine from sharma model ,
but rest of the accessory

tx 2.4     6 channel transmitter receiver and servo i am not sure where to buy what is mode of payment
and what more is require to build my rc glider

any suggestions 

@wingmanbunty
"Eat, sleep, fly"
Add "Search, find"
And discover the joys of discovery.
Answers to all your doubts and queries are hidden right here in this forum.
Search and you shall find!
Good luck

@K K Iyer
with due respect sir
 Why I came to rc india ?
Answer:- to know the address of rc bazaar and rc damaka from you .
Now I got it thank you so much….. :salute:
 Discovery and search:- Go to  rc bazaar ,rc damaka and Sharma Buy and fly  
Then what will be the joy of finding something new and feeling it my friend, I made my own servo the issue is It is heavy I am sending its photo .i am not using lipo I am using 1.5 volt ordinary cell .my home made rc glider is already flying, because of weight of its equipment its size gone to 6 ‘ ft  now   and I have less space to operate at my home so I am buying these equipment to fly from hill….
Now eat to get energy to think
Sleep to think what you have created
Fly to perfect it
So eat sleep and fly
What Discover and find :-    copy ,download the plan , watch youtube,Buy airplane ,fix the engine, fix the servo, fix the radio that is not the fun my friend, this hobby is cheaper than buying a smart phone …

@wingmanbunty,
Sorry. No offence intended.
All that was meant was:
Much of the INFORMATION you need is already there in this forum, and you can yourself discover it.
It was never intended to imply (as you say):
"copy ,download the plan , watch youtube,Buy airplane ,fix the engine, fix the servo, fix the radio"
You may find it hard to believe, but I do wish you well in your efforts.
As you get familiar with more members of this forum, you will find that many many of them have skills / accomplishments far beyond buy model, fit engine & radio, fly.

The problem of heavy servo and the range of remote is solved

I use the same transmitter which is in china flayer in my above post its range is very good and receiver
Weight is very less  the motor is heavy ,
so I use again china made helicopter (one with contra rotating propeller very good thrust) as u can see in  photo the size of motor compared to  pencil I use 1.5 volt pencil cell to power the unit.
 These motors are placed at the tip to turn the glider it is just like Cessna avco Lycoming engine fitted on the boing 747 to turn the wing..  My wing is 6ft long (it works)  

Results
The results are very good as I was expecting the motor produce enough thrust to turn the glider as I was flying in a small space the glider will work fine at long distance also because the transmitter is of very good range I can make turn just like in racing cars the problem with rudder and aileron was they depend
On amount of air passing down side the wing now air is not equal all the time some time it is fast sometime it is slow as the speed of glider is not controllable which make difference in the sensitivity of the control to respond.
These small propeller generate good amount of thrust , even glider speed is slow or it is near to the speed of stall , I am now able to make turn 180, 270 even 360 degree
I call it a stall flyer because its speed is very slow and for beginner like me can practice on it; I am in contact With some good people. yesterday I join them on Sunday flying I will get some new equipment and knowledge and will continue experimenting……
Life is awesome, eat sleep and fly …..

Just great no more words to say.
You deserve many  :hatsoff: :hatsoff: :hatsoff: :hatsoff: :hatsoff: :hatsoff: :hatsoff: :hatsoff: :hatsoff: :hatsoff: :hatsoff: :hatsoff:

thanks for kind words sir.....

no need for sir I am very young :giggle:

Hi wingmanbunty, awesome!! when I saw ur pics I feel they are from Jodhpur!!! ;D and when I see your location You are from Jodhpur!!!  I mean No Pic from Jpdhpur cant escape my view.  :giggle:.

So where there??

Topic split as this discussion did not fit in the other thread.

WINGMANBUNTY..... {:)} {:)} {:)} {:)}

you have proved that any one can get into this hobby, specially with the parts that you have used..... :thumbsup: :thumbsup: :thumbsup:

U r a genius ..

Simulator

If you are building kit plans than simulator can not copy their controls, many of these are free on internet but one self builder like me loves the ground practice, I believe when plane first glides (hands off) in the air it tells the entire story about stability, cg, Weight /power ratio, roll stability everything


Kit plans


I will fly kits for glow plane in future but  I love to build airplane I like to feel my own creation, for plans I think I am sitting in the examination and I copy others answer sheet.
After searching for power unit for few days at Jodhpur I decided to have  my own  power unit for  my airplane .I build A foam sailplane glider whose shape is inspired by a 380 wing (bowel) these wing can carry enough weight

Seriously,
Great.

Eat, Sleep, Fly.
Very good

with I went to sojati gate to repair my china battery charger . there is a shop name radio doctor where I met a radio specialist his name is Mr. manoj  . he spend his whole life to repair electronic equipment, Now my search end I got the right pension, he is not from aviation ,  I went late at night 10 pm it was closing time
but the pension respond me very well he ask me to come next day , the next day I went to him he not only  fix my china battery charger also build new a battery charger , I  got 3.6 volt  battery , and also oswal voltage tester to check  that the battery is working on its maximum power before flight.
 I have both power and control units which are tested.

I build a foam airplane made of high density foam , I got it from  my factory they are coming in machine packing which I buy for my factory use .


All thanks to china toys :hatsoff: :hatsoff: :hatsoff: :hatsoff: :hatsoff: :hatsoff:



I spend no money I have transmitter, receiver, motor, battery, and airplane everything I need for…
 airplane is ready I need big size area were nobody disturb me, I decided to go Gandhi maidan (very big ground name) sardarpura  late at night about 10 pm or early in the morning when nobody is watching, the breeze was pretty cold and turbulent  made first test flight by  adjusting70% power from battery power unit and trimming the controls, i remove all receiver landing gear etc so as to less the drag and weight  .
I am quite satisfied with the performance of the plane I got success……..

Balancing

It is not easy to build airplane which fly without trimming it , my foam sailplane also have roll balancing problem , I tried to fix weight to the other side of the wing to make it balance , I love to fly little forward
Cg airplane, but I am not satisfied with my foam design so the best way to experiment with balancing
Problem I build another sailplane which is made from card board (these are wedding card invitation)my daughter painted it , I tried all experiment on it to make a airplane fly balance so that I can use on my foam airplane ,

I found batter to build new airplane….
 The balancing problem is only controllable when we start building airplane, every mm, degree, weight matters.
Weight adjustment and trimming control do not satisfy.


A  plane design which flies without trimming hands-off is great fun to fly…..

Nothing Calm the mind and soul

As much as eating

As much as sleeping


 
As much as flying

thts one  :Rs: :Rs: :Rs: LESS BUILD.....

really motivating for starch builder..... :thumbsup:

you should really post a  build log....

Very good
How did you increase the range of your radio

Nice bird..... :salute: :salute:
Wingman any nice video.....

  @ rcrcnitesh


eary i was using china cars transmitter they dont have good range they came toys in range of 180to 450 rs , i am using a transmitter of good range it came with yellow colour flyer which fly by adjusting the power of motor.. (please see my above post)

is there anybody from jodhpur who fly electric rc aiplane i am in need of some assistance how to fix esc transmitter and receiver , connecting servo , i got new setup from rc bazaar , and i blow up receiver at the time of connection .

so any one from jodhpur will be great support for my project

is there anyone from rc bazaar pls help to solve out of this problem and continue my project

due to faulty circuit my new project is completely stoped ...

 :banghead: :banghead: :banghead: :banghead: :banghead: :banghead: :banghead:
 

Burned the RX??? but how?
Did you connected it directly through battery without a BEC. open up the case and put a closeup pic of RX board. you can still fix it. moreover 5V 2A is not much to burn a board, and reversing a BEC output will never fry the RX since Vcc is always in the middle.

Ashok.P

Bhai I am also from jodhpur, but Vivek Sharma Ji Can help you. talk to him. He is based infront of Khas Bagh, (Old campus). He is a world renowned Aero Engine & propeller maker.

Else call me. PM you my number .

i want to know how much amp of esc is required by 2200 mah battery with 11.1 volts, is 20 amp of esc is the correct match for this battery
i also want to know how much is the amp rating of 9 gm servo utilitzed by the esc and how much amp is utilized by the 2400 kv outrunner.

Hi Wingman, here goes the thumb rule:

>Find the AUG of plane,
>match the motor and prop for the AUG,
>match the ESC suitable for motor
>match the battery for ESC.

make sure that the motor and the prop combo produces enough thrust to pull your plane weight including battery.
then go for the ESC amp rated in the motor specs. ie if it says 18 amps max to give 500g thrust go for a 25A esc .
and select the C rating of the battery to match your ESC amps rating.

@v2 eagle   

         i want to read more about this topic if there any link on internet please send it to me

thanks for valuable info.... :salute:

Sorry sir, ive learnt all about this in this same forum,
you can search the instructables video and flite test videos in you tube for motor selection and prop selection. but i cannot find any collective info in one place.
Normally i would go with the specs given in the website. you can still fly with less than 1:1 thrust ratio but will be a slow flyer and cannot resist wind.

Ashok.P

Aviation people are most friendly people on earth but this is not entirely the case with me
Or lots of people face it but can’t not share with others
I find something which spoils the fun of this hobby….

I am in need of some assistance to connect rc electrical
Equipment I was working on my next project with equipment from rc bazaar
Project cost me rs 10000 I got everything but was fail to connect them
Properly and esc and receiver blow up
Here is the detail

      As it is given on the website of rc bazaar on avionic 7 channel transmitter setup, I connected esc with the battery And then to the 3 rd channel of the receiver then I start the master Button of the receiver and after that I switch on the transmitter but, I smell that something is burning their so I stop connecting servo to check for connectivity,

 I Remove all the connection and put my hand on esc it was heated and when I see the back side of the receiver I see the spot where it burnout and some smoke collected in the box as you can see in the picture
 
Now
             I have nothing to say maybe it could be my luck or something went wrong. I got everything battery
Motor, transmitter, and esc I also build airplane for my setup only thing
Remaining is receiver so I spend about on these items I want it to work
My project is completely stopped as new set of receiver will com e within 2 weeks

I waited for 3 weeks then I call rc bazaar to respond me about the receiver, but I got negative feed back I do not know the exact time period of getting new receiver

As it is china made anyone in the form can help me is it tx is compatible with any 2.4 ghz receiver so that I can continue my project, Reset I can not rely on rc bazaar they hands off from the receiver, is fly sky receiver is compatible with avionic tx
..


I do not understand how a 5 amp of current can blow up the receiver at the first time.
The simulator provided with the pack is also not working. I even do not have any documents with this package how to setup with the receiver, no details at all.



If we are in a hobby then parts will broke out and it is supplier’s duty to have all parts supply so that we can replace it and continue our project, if receiver is unique and airplane crash landed then what to do everything is of no use

In that case we have to buy a new set of transmitter and receiver, that is not correct and what if we open the pack and rc equipment blow up before we install it in our plane
What we can say about the product.


wingmanbunty

You need to be careful while making connections to receiver. Keep in mind the order of connections in the receiver.

i started my new project of which i started drawing on a weding card i use blue and red pen to scatch
cessna model which i am planing to build with foam of high density and 2024 kv motor 7.4 v battery 20 amp esc and avionic 7 ch tx rx , is it right material anyone can suggest most welcome.. i am waiting for receiver plans is ready in 20 minutes i will scale the drawing as per the need .....

I have been following your woes and travails

one suggestion - fit an aftermarket 2.4ghz module(the diy kind)
either orange or frsky in your Tx then you will not have to hunt around for
receivers

something like this
http://www.hobbyking.com/hobbyking/store/__40205__OrangeRX_DSMX_DSM2_2_4GHz_DIY_Transmitter_Module.html (http://www.hobbyking.com/hobbyking/store/__40205__OrangeRX_DSMX_DSM2_2_4GHz_DIY_Transmitter_Module.html)

better go for the orange as receivers are plentiful and cheap and well suited for beginners

I know it will be painful to spend more money - but it is better in the long run
also if you do decide to sell your tx - it will have better resale

Hi Saikat,

Is this possible with RCB6i or Flysky FS T-6,
I have both of them and my plane family grew much larger than expected and i do not find any spare RX for both.
Any proven methods would be welcome.

Ashok.P

Yes - this is possible with both those Tx's

in fact you can wire it up such that you can transmit both protocols(not at the same time)
your existing TX (in your case flysky/avionic?) or orange or frsky.

pls however - get experienced help cause this involves soldering - basic level

@saikat


                 thanks for your advise , i was already considering orangeor flysky , but the only issue is
        sombody told me that if we buy transmitter from outside india,cusotm duy will take that in their custody and they will not allow us to use , is it right or wrong my friend i will be happy  to buy from hobby king

how much the goods transport will cost , anybody buy tx or glow engine from hobbyking how much is the tranportation cost and what is mode of payment.

thanks for your support  :hatsoff: :hatsoff: :hatsoff:

That is the whole point - you do not have to buy
a transmitter - just buy the module (size of a matchbox)
and fit to your existing transmitter

thanks a lot for this info Saikat, i really never heard of this thing before...
Im good at soldering even with SMD level and designed more than 100 embedded boards at least,
any guide or any website would be helpful.?

Ashok.P

Hey v2eagle.

here are some vids for frsky module....these are for 9x....but as you are good with soldering....i think you can figure some way out....:D:D

gud luck  :thumbsup: :thumbsup:




http://www.youtube.com/watch?v=HeUcaFhnnRM#ws (http://www.youtube.com/watch?v=HeUcaFhnnRM#ws)

http://www.youtube.com/watch?v=MOiKSfD8f6c#ws (http://www.youtube.com/watch?v=MOiKSfD8f6c#ws)

http://www.youtube.com/watch?v=6Bm_OO5gexQ#ws (http://www.youtube.com/watch?v=6Bm_OO5gexQ#ws)

@madaquif

                       thanks for the video   

 it is a hope for me but i do not have dare to open the heart of transmitter....
but very valuable information thanks...... {:)}
       
                       
                    :bow: :bow: :bow: :bow: :bow: :bow:

Hi

      Presently I am working on a Cessna model which is totally build from scratches, I use wedding card to draw the plane model then I use a waste peace of foam and shape it in Cessna model I use scatch pen of my daughter to paint the surface I have now few foam design which I build and waiting for the receiver to come from rc bazaar

The wing area of the airplane is 78 cm, length is 56 cm, and height is 21 cm it is entirely build by high density packing foam I draw the painting and scale it to fix the equipment which I got from rc bazaar

I want this airplane to fly , the equipment I am going to install on this bird is as follow

9 gm servo from avionic
2024 micro brushless motor avionic
1500 mah 7.4 v lipo
Receiver 7 rx avionics
20 amp esc avionic

All these equipment are from rc bazaar and I have all of these except the receiver which blow up last time and I am waiting for 1 month to get it from rc bazaar.

As I got the receiver I will take this bird in the sky it is very light weight even a slight cross wind take one side up in the air as u can see in the picture.

Now I want anybody from RC India suggest me about the battery to use and I am little bit
Not sure about the esc also about motor.
Any other place where I can buy please suggest me

Your support help me a lot

Wingman bunty

Anybody buy OrangeRx T-SIX 2.4GHz DSM2 6CH Programmable Transmitter or any other transmitter from hobby king how is the product and how to import? Is there any custom issue in India if we buy tx/rx from outside India ….

anybody Please help me to find out  :help: :help:


Any authorized or reliable  dealer of futaba in India which can provide 2.4 GHz tx rx with 3 receiver to connect with different airplanes also reliable complete set of esc and motors with good supply of battery at any time.

I am in need of futaba receiver battery ie 4.8 volt dc 600mah with futaba battery charger
Anybody have idea where I can buy it or can I use my 20 amp esc with 2200 mah 11.2volt lipo or any other lipo battery to power the futaba receiver

i also want to know is it possible to use 4 channel with skysurfer.as i am planning to buy it .



I have 4 channel futaba transmitters with receiver…..

my post could be very funny for everyone but i am in a situation :giggle: :giggle: :giggle:
now a day i read a lot and i had seen lots of youtube ...

 i had spent some money second time for tx /rx and i can't take it lightly as i have only one set of receiver of futaba and

i had blown up the avionic receiver at the date of arrival or it could be faulty circuit,
now i lost all hope of getting receiver from rc bazaar.
and i was  in need of complete set for more then one month (tx/rx) from which i can continue my project ..

i know that lipo can power receiver by esc but i need experts to suggest which lipo and which esc to use  please understand my situation this is second time with  lots of investment

thats why i write this post.

Good job Wingman,

You dont need a seperate receiver battery if you are going for a electric setup, the BEC in the ESC will do the job.

a few steps you could consider.
First determine your AUW(the total expected weight of the plane including the battery)
Then select your motor prop ESC setup accordingly
any receiver with a BEC can power up the receiver and you should not connect the RX directly to LIPO and this may burn it.

This video could give you an idea about ESC LIPO motor setup
http://www.rcindia.org/beginners-zone/ths-video-tutorials-on-youtube/msg148816/#msg148816 (http://www.rcindia.org/beginners-zone/ths-video-tutorials-on-youtube/msg148816/#msg148816)

in this video substitute the servo tester with a RX.
Above all DO NOT connect anything if you are unsure of it. Futaba is a good piece of reliable hardware(Costly too) and should work fine. Please take the help of a nearby club. they will be very glad to help you with setting up the power train.

Ashok.P

thanks v2 eagle i will be more careful this time.

 ;) ;) ;)

@wingmanbunty...
just a suggestion... while making pencil sketches of airplanes, make the lines crisp and sharp... i see that at couple of places you have done overwriting of some lines... it spoils the artwork.. what i suugest is that make a rough sketch first on a rough paper and then race it onto a butterpaper.
then use that to make the final sketch with neat lines and strokes

i have learnt this by experience( grew up drawing jets) this is professional advice given to me by my sketching tutor at school when i was 12. remembered it till no and using it till date

@topalle

        very nice to get drawing tips from professional like you. thanks sir i will take care next time.

but sir as from child i do not use butter paper or carbon paper to improve my drawing . i used to draw using boll pen . even i draw from pencil i do not use rubber to rub and give finishing . that is my style once a line is drawing i try to improve or hide it any way , once the line is drown it is final.

               but i will take your tip and try to improve my drawing.
i would like to see any of your drawing what colours r u using.
if possible pls post it.
wingmanbunty.

sir, i am not a professional artist... i made the same mistake while i was young... i got this advice from a professional artist at an art exhibition where i was presenting my sketches

good one Bunty.

@topalle

              sir i am not satisfied with answer, you can not skip by such answer , i am really happy that
this form has artist and i really want you to post any airplane drawing.

pl z    8-) 8-) 8-)

i will try to scan it or take a photograph of it but i have exams :(
tomorrow is sanskrit exam for junior intermediate in andhrapradesh
i have made a collection of jet drawings
BAE Hawk, HAL Tejas, F22, F16, F18, B2 stealth bomber, and lot more

foam model  with two ordinary china made electric motor uses 7.4 volt with a 2 channel china made transmitter which changes the motor speed to control the airplane.

Dear Wingmanbunty,
Well your josh seems to be great towards making and flying aeromodels.  Well I am now expert... but what I can tell you is before trying to jump into making your own designed models of aeroplanes you would do well by making models of drawings already present in various forums / weblinks of trainer model aeromodels.  This will ensure that you have the right proportions and the required shape.  Anything and everything does not fly.  Also read something about aerodynamics.... like lift & drag, weight & balance in flight..... these issues will go a long way in ensuring that you do not run out of good knowledge and correct advice on this hobby.  Many, in fact many have given up because they thought anything and everything can fly.........
Happy flying.

@shobhit17

                This bug is inside me as from child, lift, drag, weight ratio can not kill my hobby the only thing killing me now a days that I pay money and I do not get the right stuff to build airplane, I spend near about 19000 rs and still I do not have reliable equipment to build new type of airplane I still use my 10 years old equipment when I was student.

              Knowledge is everything sir u r right, lots of people leave this hobby it is also right, but the thing is how many people are there having good knowledge and share it with beginner in the positive direction or give assistance in nice way.
                                 
                        Making this hobby limited to a group of people , and if a beginner want some assistance in building a first airplane or want fly fist time , not showing the right assistance is the fact of this hobby

That’s why people leave this hobby …..

Now a day lots of people get start, because a model cost near about 25000 rs investment and one mistake blow up everything. And this mistake ruined all hopes
It is killer of hobby


This is the time where expert assistance is needed and chances of failure will be very less

Dear Wingmanbunty,
Do not be disheartened.....  It appears to be the same case as it was for me many many many years ago.... I made my firsl tow like glider when I was in 5th standard in the early 1980's.... Best of luck.. if you need any assistance maybe I can be of some help....
Happy Landings
Shobhit

Dear friend,
Well where are you located... I am at Allahabad and am flying my models well enough though a bit jaded because of a long long gap.  You may call me for any assistance you may need... from material to building the model to anything you wish.  I would be happy to share everything with you.
regards

Bunty ,

19000rs is too big in my opinion and if you havent flown anything now then its very bad,
as rightly suggested by shobit sir, use plans that has already been tested and proven instead of jumping to your own plan,
with the pics you have posted i see you have the right setup to start with. its just that you need a good model to put these on, have a look at my glider that i just completed and flown successfully if you need any info.

Ashok.P

 Thanks for support it matters to me.      shobhit17, v2 eagle
 I will crash lots of airplane , but finally my airplanes will be in sky soon

No you do not need to crash your models... just get a simulator... (some 9-in-one sim are available for a few hundres rupees at various RC shops), practice on them and fly well...

@shobhit17

                    Sir I already have simulator which I buy from rc bazaar I am not using it  , I also know lots of plans which is available on internet, there are lots of simulator  which cost 1000 rs and are very good to learn flying rc airplane. After that there is skysurfter at rc damaka and rc bharat to buy and I am ready to go……

You know sir it is very very easy way

I am scratch builder I love to build airplane using material around us or which is easily available and I really enjoy it.

Sir chances of success is very less here but I will try again and again
When I will be tired doing this I will buy new simulator and sky surfer everything will be okay then .i know it.

I have a 2200 mah 11.2 volt lipo battery can I make it to 7.4 volt battery so that I can use it in my setup .
 
If not possible then I will buy new lipo …
Any alternate wood of balsa pls let me know if plywood, new wood or any other light weight wood can be used to build airplane other then balsa

range of transmitter along with receiver i am using to build scratch planes all are in working condition
1 avionic 7 channel rcb 7x 2.4 GHz
2 china 2 channel 27.145 MHz
3 china 2 channel 24.5 MHz
4 china motor glider long range transmitter work by adjusting the power of motor
5 indoor helicopter transmitter
6 futtaba 4 channel transmitter

i consider the weight of the airplane should be around 200 to 250 grms for the setup i want to build

i think only missing in my setup is prop and lipo 7.4 volt

JM 6x4 /152.5x102mm propeller - 1 Piece


ZIPPY Compact 500mAh 2S 25C Lipo Pack

Bunty,

the key for a successful model is weight instead of power, keeping power high with too much weight weight will get your model nowhere, atleast it wont flies that great to give relaxation. keep the model light and first perform a glide test before a powered launch, and use a proper motor/Lipo/Prop combination, small capacity battery will give more time with a lighter plane instead of 2200mah one. select/buy the motor after you complete the model and ensure it can lift the weight. i can PM a good combo of power system and Plan that works well if you need it.

Ashok.P

@v2 eagle


                  very true sir , i am totally agree the weight should be very less thats why i am planning to build airplane weight in between 150 - 200 grms , and also i am seraching light weight battery to weight approx  40 grms. so as to increase the chances of success ,

 sir i am planning to reduce the extra weight i will fly without using landing grear. also i will work with 2 sero only for elevator and rudder controls (instead of 4 , 9 gms servo ) ie two exta servo for aileron i remove it so as to less the weight to carry by model

sir you suggested the glide test that is the way i plan to go

i am planning to use high wing with good dihedral (VERY LOGN WINGSPAN)

        sir i have everything just i have to buy few props and a light weight 7.4 volt 800 mah lipo
and there after i am all set to go........

your support matters a lot to me ......





 

Just great,

if you are going for a EMAX motor go for 2822 or 2812 instead of 2805. you can get more power for the same price and weight.
i myself run my 3ch glider on 2812 and can do hover. also ele and rudder and no aileron is a good move as you do not want to mess up with extra controls ruining your flight. all the best.

Ashok.P

 I  want to know what should be the weight to thrust ratio I should maintain so as to make my airplane able to perform hover maneuvers , and as the prop size is increasing I am bit concern about the torque produce by the prop. What should I do to counter the torque?     :headscratch:

I do not want to perform hover maneuver but I want power close to this ratio so as the possibility of success of model increases.

I am very slow this time but want this time very good setup to build airplane , my airplane weight is going to be approx 150 -200 gms. Without equipments.

        The  existing motor produces 450 gms thrust with prop size 8x4  which I think is okay for the model
Sir
         The emax  motor suggested produces 730 g thrust at 15.5 A at 11000 rpm  with  7x6 prop size

The existing weight setup is good with 7.4 volt 500 mah the battery weight is approx 37 gms.

Also I am searching possibilities     8-)

  Of  motor which can be fitted on my existing battery ie 11.1 volt 2200 mah 25 c lipo and also can I use my 20 amp esc or I have to buy new one. The motor which produce lots of power with my existing 20 amp esc…..

is it possible to get 1 to 1.5 kg of thrust from the motor with my 11.1 volt lipo
It could be a different setup.

I PUT heli blades to work as propeller  for my foam build airplane.
will this jugad going to work or not.
                                                    :headscratch:

Hey wingmanbunty ...I doubt it will take the load of  heli blades.....your motor may become really hot....may burnout ....be carefull

To be frank,
ive seen the avionics motor in action and it really is a useless motor.
right from motor mount, prop saver, everything is dispropotionate and really takes some patience to set this up.
OTOH you have various options for motors. for a good plane you need to have a reliable power train and radio setup.
get some good motors like turnigy/hextronik/emax that can produce good thrust reliably. also looking for hover at first flight is too much in my opinion.

here are some steps you might consider,
fabricate a plane first and put some glide test on it.
look for some reliable power setup that worked for someone else instead of putting lot of money experimenting.(for 19000 i would have flown atleast 5 planes)
once you have the confidence, experiment with different models and setups and by that time you will have all the knowledge you need.

All the best.

Ashok.P

v2 eagle


by the time i got your post i order new set of battery and receivers now buget goes to 25000 for experiments and i do not have prop. to fit in setup , what ever you are saying seem me absolutely right
it is 100 % right , i think it is time to stop spending money and buy a trainer airplane but

there is what will be the success rate if i fly on my own.


i really want to keep this hobby alive but really i think i have to skip thinking about this hobby for a while
because of the wrong decision taken by me .this is good amount of money i place .

still i am ready to spend money but i do not have you know good setup which assure me


now i am thinking about ebay.in (indian hobby shop) for emax

or rcbharat for sky surfer





 

@Bunty: If you want to buy props you can find here http://www.kinetichobbies.com/index.php/accessories/propellers.html (http://www.kinetichobbies.com/index.php/accessories/propellers.html) it costing just Rs.20 to 30. first figure out what kind of size prop you need.  :hatsoff:

And one more thing don't waste your money and time on experimenting, just buy RTF planes like easy star-2 or sky surfer.  :hatsoff:

Bunty
Skysurfer is available at Rcbazar. It has all in it, like motor,esc,prop,servos. All you need is put your lipo, RX and fly.

Here is the link http://www.rcbazaar.com/products/1063-sky-surfer-v3-with-motor-esc-servos.aspx (http://www.rcbazaar.com/products/1063-sky-surfer-v3-with-motor-esc-servos.aspx)

Buy some good props like APC http://www.rcdhamaka.com/index.php?main_page=product_info&cPath=3_48_80&products_id=674&zenid=ouicd0rgvgaf9t4v1a78knnd34 (http://www.rcdhamaka.com/index.php?main_page=product_info&cPath=3_48_80&products_id=674&zenid=ouicd0rgvgaf9t4v1a78knnd34)
and electric composite props http://www.rcdhamaka.com/index.php?main_page=product_info&cPath=3_48_80&products_id=1104&zenid=ouicd0rgvgaf9t4v1a78knnd34 (http://www.rcdhamaka.com/index.php?main_page=product_info&cPath=3_48_80&products_id=1104&zenid=ouicd0rgvgaf9t4v1a78knnd34)
(Links just for reference)

They will last long and can take much betting before giving up. Those orange color props breaks very easily if you are learning.

This figure is just to test the system not to use in airplane.



My avionic motor  uses 7.4 volt battery with 20 amp esc

Can I use 11.1 volt 2200 mah battery  with 20 amp esc

Will it be save  to run motor.


Motor details
PROP - 6x4
KV (rpm/v): 2400
300  gms Thrust
Power: 55W
Lipo - 2 cell 7.4V
ESC - 20 amp




in short i want to know can 11.2 volt battery be used in place of 7.4 volt battery
with the same esc ie 20 amp

recomended battery for motor is 7.4 volt

Tomorrow is Sunday new connector are missing prop is also missing but I want to bind up the setup

So I use electric switch board copper connection connector if you see in attachment
 And helicopter blade instead of props I will give very little power so as the motor do not burn up
battery is also having very small holes just like in charging point of battery i have big size battery connector.

Should I continue or stop and wait for new items to arrive

These items are available at kinetic hobby but it will take some time to reach to me.

I can test setup or I stop.

 :o STOP

talk to me before you start with this.

okay sir

today is a little bit late tomorrow morning i will call you sir .

today i tried connecting receiver servo motor i got little success servos are working fine , but motor is not rotating , there is sound coming out from the motor each time ie biiiiiiiiiiiiiiiiiip , little movement (not rotating )and again biiiiiiiiiiiiiiiiiiip sound what could be the reason , i changed the wires .

tx is in helicopter mode , i haven't use bullet connector(as i have only two ) i make direct connection ,

i want to see my motor rotating what is missing?????????????????????? :headscratch:


i order prop and connectors to kinetic hobby but it take time to reach it to me.

Did u calibrate your ESC?

@madaquif


            yes sir the motor with all the 5 servo not take more than 11 amp of max power and i have
20 amp brand new esc.

what is missing that the motor is not rotating and giving beeeeeeeeeeeeeeeeep sound.

the motor is brand new. :headscratch: :headscratch: :headscratch:

Try calling rc bazaar and get some help from them to calibrate your ESC.

they should help you to calibrate the esc.       :thumbsup:

@madaquif

          thanks madaquif i download the pdf and follow the procedure. 


 

today i again try to move the motor this time i gone through the procedure the throttle was in down position controls neutral position i check all transmitter  setting and set it in the airplane mode

everything goes okay servo movement was also okay the beep sound according the manual was okay
it also beep twice to show the indication of 2s lipo connection but i was not able to move the motor

still something is missing please assist me

anybody using avionic motor please  :help:
or anybody from rc bazaar

motor is rotating now . the mistake was i choose the wrong tx stick i thought it was trottle. :P :P

Awesome Best of luck for the near future.
How is the motor is it good

@rcrcnitesh

       after long wait finally i got a working setup first time , it has very less space for prop mounting i manage to mount propeller , i am very exited to build airplane plane around this setup , motor is in testing phase.

i am testing motor for my project i want to know

how to decrease the vibration of the motor

one thing i know is propeller balancing

 
what else is required to decrease the vibration. :headscratch:

As I have a working setup I start building airplane around it. At first I decided to build motor glider with very large wing span about 5 feet long and the weight should be under
300 grms including equipments(motor, esc, receiver, servo ), I manage to build it in under 350 grms but thermocol particles were all around my house , I do not want my kid to be harmed by these small particles of plastic so I dropped the idea for some time I decided to
Prepare a closed working room in my house where I can safely use this material

I search the market for coro sheet and finally I manage to got It I construct  a new plane in few days , now everything is installed and I manage to construct it in under 300 grms with everything installed ie motor, esc , receiver ,servo , battery.
It has two servos to control rudder and elevator.


I had successfully done the ground run


Motor produces
PROP - 6x4    ● Get  300  gms Thrust
PROP - 7x3.5 SF. Get  400 gms Thrust
PROP -  8x3.8 SF● Get  450 gms Thrust

As rc bazaar says.


Presently I have 4x4 of prop fitted I think it is running under power .i am planning to use
8x4 prop.  for this model ,

Second think I am going to remove the motor and place some weight at nose and want to
Perform several glide tests so that I can get the feeling of flying this airplane without damage to my motor

Hi sir

I made success , as the model I made was very heavy it require 8X4 of prop to get sufficient power to up in the air it is very nice finish airplane it has also nose mount motor so in case of nose down ,motor and prop will be lost

I decided to build pusher propeller airplane to train myself so that my motor and prop will be save , also I decided to build 80 grms empty weight airplane so that it can lift up easily
, I think presently it produce 250 grm s of thrust with 4X4 of prop. This is enough to lift this trainer

I also want to build simple airplane which can handle lots of crash


Mr vivek assist me to make electric setup in working condition.


The receiver  was repaired, there after I was in need of new battery it take lot of time to arrange equipment to make such airplane , still I do not have
New reliable equipments.



I do not go with the plan this is totally my creation with lots of jugad.as you know I lack some items, still I do not have props and connector and battery connecter are missing I build all servo connectors by very thin mango wood and bamboo sticks in place of carbon fiber rods .



Sir you know the story first when the receiver arrived it blow up, then I waited for several months for receiver,
Earlier that time I was against buying cheap rc equipment from rc bazaar if you read this blog (my rc electrical experiment) . I got very disappoint when I lost receiver the day it arrive to my home

But today I 100 percent recommend these items, I have everything from rc bazaar , avionic Rcb 7 x tx, rx , avionic esc , avionic receivers, avionic 9 grm servo , and battery also from rc bazaar.and all is fitted on my trainer airplane works fine

What else one could ask for more than in this price range

Transmitter has tons of features.

There is very less space for prop mount in avionic motor but it will be improved over time as it is performing fine in my airplane.

I mean a scratch builder like me like to risk less amount in experiment (till now 25000 rs )and rc bazaar provide it I have also futaba no doubt branded products are best but avionic is also a good transmitter

Also the service is very good , rc bazaar promise me to give receiver what ever qty I need today I have 4 receiver from rc bazaar and it is still available  in their shop . so parts supply is also good.

I am very thank full to rc bazaar to provide me equipment when I was in need to build my own airplane.


This is my success

And many thanks for your constant support you rc India always support me when I was in need of assistance.



Wingman bunty

i have the video soon i will upload it.



source of inspiration for this model is icon star microlight aircraft.

my model no close to it but it works  8-)

Technical detail of airplane

Airplane name : kishi trainer
Wingspan: 32x5””
Length: 24”
Tail :10”
Fin:5”
c.g :2  ¼”from the leading edge.

Empty weight :
80grms (without the motor ,battery ,receiver,esc)

Prop:
4x4 orange(I recemend 6X4 ,8x4 carbon prop for batter result)
        Why I not use it because I do not have it right now.

Motor (www.rcbazaar.com (http://) (http://)):

 Motor: Avionic M2024/18 KV2400 MICRO brushless motor
 KV (rpm/v): 2400
 Power: 55W
 Winds: 18
 Resistance: 277 mOhm
 Idle current: 0.8 A
Weight: 17gms

Combination of usage:
PROP - 6x4 E
● Get  300  gms Thrust
 Lipo - 2 cell 7.4V
 ESC - 20 amp

 PROP - 7x3.5 SF
● Get  400 gms Thrust
 Lipo - 2 cell 7.4V
 ESC - 20 amp

 PROP -  8x3.8 SF
● Get  450 gms Thrust
 Lipo - 2 cell 7.4V

Recommended motor is emax cost rs690 at ebay.in produce 600 grms of thrust for batter result

Servo(www.rcbazaar.com (http://) (http://)):
two 9 grms avionic servo , one more can be used to control aileron.
Esc  (www.rcbazaar.com (http://) (http://)):
20 amp esc avionic.


battery (www.rcbazaar.com (http://) (http://)):
wolfpack 2s 900 mah 7.4volt
recommended battery zippy 2s at ebay.in


I strongly recommend this type of airplane should be the first kind of airplane to every beginner because it is design by me,
Joking   ;D

Because it is very simple and very strong design, just two peace of coro cut and you are up in the air

Also it is a pusher configuration that makes s our motor and prop to much safer from early crashes we made during learning.

I am also learning and have orientation problem it crashes lots of time, just some piece of tape on the field and it is ready to fly again.

It is just like our old bajaj scooter which does not stop working.

Its dihedral design produces stability in the air

The C.G . Is also at the lower spot (ie weight of the battery and receiver) work as pendulum to bring it to centre position

The thrust coming out from the pusher propeller goes straight to the rudder that makes it super sensitive to respond.


Now stop wingman this is more than enough. :giggle: :giggle:


Thanks for support rcindia.

here are dimension.

now flying everyday

Trainer airplane is performing very good I completed several flight and learn basic flying on this airplane

I have very small issue with this airplane the tail of the airplane seem downside hanging
 Please see it care fully
It does not look good if we see carefully
If I put some emax power unit then it will climb like a helicopter very straight
And I do not want it; it should climb with smooth angle.

What could be the problem?

What I think it is thrust line or weight of servo backside.


I had seen you tube this is not my alone problem lots of flyer fly in the same tail down configuration

Next project is aerobatic airplane which motor I should buy ,I need 2500 GM thrust.

2500gm of thrust? but why. you can make a foam plane with a motor of 500gms thrust and can fly 3d easily.

Ashok.P

Thanks v2 then emax from eBay will be good as you said earlier what should be my model wait with 500 grm thrust for 3d

Haven't build/flown any 3d planes so far i cannot recommend anything more than what i have heard/read. but most of the time i try with whatever i read/heard and i came with success.

For 3d you need a weight to power ratio of 1:1 ie if the plane is 300gms, then the motor should give at least 300gms thrust. higher the thrust, better it is.
2500gms thrust is roughly equivalent to a 25class nitro plane or higher.

A few tips you can consider. try using a SF prop instead of a speed prop. this makes prop hanging better and you can perform all maenuvers at slow speed with enough lift.

Planes love thrust but not weight. so instead of trying a powerful motor for more thrust try cutting down the weight as much as possible.

Ashok.P

Having built a 3D plane before, here's my suggestions:

1) Get a motor with 700 - 1000 grams of thrust.
2) Don't make the plane too light. The extra momentum can help sometimes.
3) Use good quality coroplst as it can handle the high forces.
4) If possible get metal gear servos for the elevator and ailerons.

Thanks sir
v2 eagle   Swapnil


still my aerobatic airplane power plant is not cleared in my mind ,

I have 2200 mah 11.4 volt 25c lipo battery I want to make use of it so decided to buy a
40 amp esc and a motor which gives 2500 gm trust the model weight is going to be around 800 to 1000 grms

I am searching items to build success full model. This is in my mind and yet not cleared. ???

V2 sir and swapnil sir started a good issue, about the weight of the 3d airplane

Please clear me out weight to power I am planning is okay or not
So that I can proceed further in my plan.

hi all

 servo makes control surface flutter what kind of problem is this , and in air plain respond smoothly but
sometime control respond automatically some kind of flutter and plan got crashed because it it not in my control

i fly with channel 1 elevator
channel 2 rudder
channel 3 throttle
i have avionics 7 channel tx rx. :help:

My ESPA3D weighed 600g. It did awesome 3D with a motor having 1000g thrust. For a model weighing 1000g, thrust of 1500g should be more than enough (seeing that it is your first acrobatic plane).

The servo flutter problem could be because of a bad servo or bad signal. Try another servo to check.

Check your control surface hinge. are they sloppy or stiff/strong and have just  the required movement.
flutter could happen due to a range problem.

Ashok.P

thanks v2 , thanks Swapnil


           flutter of control surface is not my alone problem , you are right it is bad servo , but it can also
because of the weight of the control surface or large size of control surface , it can be solved out by applying the counter wight on the control surface , but in my case it is bad servo

i completed several flight with this servo now it is out of working i have to change it

weight to power is very good idea now i am cleared more


i selected few motors of 700 to 900 kv few of them have motor mounting from front side ie motor rotating backside and i am thinking of designing the motor mount

any idea how to deal with such type of motor ie i have to buy motor mount or can i design . :-\

Motor mounts can be easily made out of ply, plastic, PCB laminate and even coro. Just check the motor datasheet for dimensions like hole sizes and distances. You'll need some M3 screws for mounting the motor.

which type of medical tape is used for hinge of control surface , so that i can also use it in my 3d airplane.
or what type of tape it is.  :help:

That is not medical tape, it's fiberglass reinforced tape.

@AnjanBabu

  sir where i can buy this tape

there you go http://www.rcbazaar.com/search.aspx?searchterms=glass+fiber (http://www.rcbazaar.com/search.aspx?searchterms=glass+fiber)

same question i asked sometime ago :)

how to setup Elevon Mixing in avionics 7 ch transmitter. or in any 7 channel transmitter
just want to know basic how to apply

there after i want to use it in my model

can i use  Vtail mixing for this purpose to achieve.
or it is a wrong method.

i mean v tail is for rudder and elevator and elevon is elevator and aileron
but movement is the same of the servo (counter rotating and up down) that what is required

Both though (V tail/ elevon)use the same basic principal of flight control, 2 control surfaces to control up/down and left/right.

am i right or wrong .
senors pl

Here is the key.

for avionics there will a channel mixing menu and you need to mix ch 1&2 and connect left elevon ch 1 and right elevon to ch 2.
Elevons perform both the functions of elevator and aileron.

Hi   everyone
I am building a trainer euro fighter with delta configuration

The Eurofighter Typhoon is a twin-engine, canard-delta wing, multirole fighter. The Typhoon was designed and is manufactured by a consortium of three companies; BAE Systems, Airbus Group and Alenia ... 

Top speed: 2,495 km/h

Model is modified and scaled to my requirement
delta  wings are little bit large to the ratio to get good lift and stability in the air.
Its wing is 29 “
Length is 30”
And I am going to use 5x4 prop
Power plant is yet not decided.
Here is the initial start.
This is very very simple design. its my second  trainer airplane to learn aerobatics

i am searching for the power plant where should i buy motor to get 1000 gm of thrust.
and also prop

anybody from rcbazaar. plz pm me.

Gives you 1.2kgs of thrust with an 8x4.

RCBazaar: http://www.rcbazaar.com/products/1910-avionic-c2826-kv1900-brushless-motor.aspx (http://www.rcbazaar.com/products/1910-avionic-c2826-kv1900-brushless-motor.aspx)

Since, prop is back...  therefore, you need to decide size of your prop. A bigger prop won't fit in the slot you've made. Also, on increasing slot size it might lose strength.

@utkarshg13

i am expecting bit more from my second trainer model as v2 said earlier i want hover  (:|~
and it has canard so possibility increase once i gain sufficient height i want to perform it

it is coming in my dreams

thats way i want large size of prop to install ,but large size slot can create  prob to the strength  of  tail fin

i decided to put two long spar at tail section to get strength. 8-)

what you think

finishing completed

now installation of servo waiting for power plant.

Turnigy D2826-6 2200kv on 6x4, 5x4
Send Adiboy a pm. He may have.

@K K Iyer


very nice to get reply from you sir i am your fan  :hatsoff:

what is the max thrust it produce with 6x4 prop

@wingmanbunty
900-1000gms as per test results on the net.
Use APC style props with strong hub to blade joint.
And don't exceed 6" dia as rpm will be 20000 or more

http://m.youtube.com/watch?v=Xy8az2-yyiQ (http://m.youtube.com/watch?v=Xy8az2-yyiQ)

https://docs.google.com/spreadsheet/lv?key=0AtSZzrsraF1-dDJzNGVEMnZnRzNzMkJab2dfRjlxMnc&usp=sharing&pli=1 (https://docs.google.com/spreadsheet/lv?key=0AtSZzrsraF1-dDJzNGVEMnZnRzNzMkJab2dfRjlxMnc&usp=sharing&pli=1)

But why do you need 1kg thrust? Model is probably less than 500gms.

servo installation completed

   i want to cut the servo wire from the middle and extend it using other three set of wire

i want to know is it the right method , is it possible , or right kind of act.

presently it is 6" i want 10" of wire length.


or i have to buy servo lead .

In my opinion do not cut the servo wire. You need a servo extension. So, search for it. Cutting the wire is not a good idea at all.
Also, if you are planning to go with 6" prop as stated by Iyer sir don't go above this size since your motor may burn otherwise.
If increasing the size of slot you just need to focus on increasing strength of that area.

 :hatsoff:

i agree with you sir you both say absolutely :iagree: :iagree: :iagree: :iagree: :iagree: right

abrupt use of control stick



it is very serious question if i use control stick very slowly and throttle very gently then no problem happen
but if i use delta control  and throttle abruptly then controls respond in very different way means they work on there own airplane controls are gone out of control for some time

they respond even if i do not apply any input

in air because of it airplane goes out of control for few second


what is this lots of command given at the same time cause it or bad servo

it could not be bad servo because i replace the servo with brand new servo.

@wingmanbunty,
Use about 40% exponential on aileron and elevator to reduce sensitivity around neutral.
Else use dual rates with 50% throws on low rate.
Also see if controls flutter at full throttle when you are holding the model.
Best of luck.

@K K Iyer

thanks for your support sir :thanks:

very best of luck for your glider project it is awesome.

@K K Iyer  :bow:

today morning i apply 40% exponential on aileron and elevator to reduce sensitivity

it seem to me that problem solved out very thank you sir :thanks:

now will travel of controls 40% is okay to perform maneuvers or i can adjust to 50-60% as you say PLZ. :headscratch:

but u solved it i was facing this problem with my trainer it has rudder and elevator many times controls goes out of may hand(20 feet height) due to this problem, model hit the ground like stone

at that time i pray to god to reach the model 100 feet and above so that when model fall 20 to 50 feet  when the control came back to my hand i made recovery. or can try to make recovery

because of this prob i always fly high ;D

the second thing i didn't get

dual rates with 50% throws on low rate

place led lights at wing tips to fly in low visibility

ie very early in the morning with very little light.

dual rates with 50% throws on low rate

by Richard Lindberg


Dual Rates.


 When you set up your control surface throws on your (new or otherwise) airplane, you used the Travel Adjust/Adjustable Travel Volume/End Point Adjust function on your radio. Doing this actually set up one rate, or control authority, for each control surface. A given stick movement thus resulted in a certain control surface movement, from minimum to maximum. Dual (or even triple!) rates provide you with a means to instantly change that control authority by flipping a switch*.
The question arises: why would you want to change rates? Most models respond more quickly to a given control input when they are flown at high speeds. The same stick movement at high speed as given at a lower speed might result in over-controlling your model—a prime cause of ‘unscheduled landings’—or perhaps a case of PIO: Pilot Induced Oscillations (also leading to undesirable results). Having the ability to REDUCE control authority would reduce your model’s sensitivity to stick movements, resulting in a smoother, more controlled flight.
The following graph depicts how changing rates affects a servo’s response. If, say, a 50% rate is programmed, the servo will only move 50%, or half, or the distance it would otherwise move if the rate were not activated. Most radios will let you set a different rate anywhere from 0% to 100/125/140/150%, depending on the manufacturer.

 Changing rates is usually done by a switch, as mentioned earlier. Some radios have dedicated switches for each primary control surface, e.g., elevator, aileron and (perhaps) rudder. The (usually lower) rate you select depends on how your airplane responds to controls at high and low speeds. Some airplane model manufacturers are beginning to include recommendations for lower rates; check your instructions. Barring this, I usually recommend 70-75% for elevator and ailerons; about 50% for rudder.
One problem with dual (or triple) rates is that, once that rate is chosen it’s in effect until the switch is used to select another rate. Furthermore, if that chosen rate is a lower rate, you can see by the preceding graph that you no longer have full throw capability! While this might be fine for high-speed flight, you might need more control surface movement for takeoffs and landings. Of course, all you would have to do is remember to flip those switches after takeoff and before landing. Is it possible to have the benefit of reduced sensitivity AND full throws? Yes, it’s called…

by Richard Lindberg

Exponential.





 This function is more clearly shown in the following graph (…a picture is worth a thousand words…).
This is the ‘usual’ exponential that is described in your manual—as the graph text says, "…increasing exponential values gives a smaller response for the same stick movement around neutral." For JR, this exponential is called Positive, and you should enter positive values to achieve it. For Futaba and HiTEC, this exponential is called Negative, and you should enter negative values to achieve it. For other manufacturers, please check your manual for the correct inputs.
Note the curve(s)—indeed there is a smaller response around neutral, just like dual rates, but unlike dual rates, full deflection is available near extreme stick positions. Kinda like having your cake and eating it, too…this is why I think exponential is perhaps the most useful of the functions in your computer radio!
Your manual will probably state that values of exponential can range from –100% to +100%. Ignoring, for the moment, which brand of radio we’re talking about, what does the ‘other’ exponential curve look like, and why should you use it (or NOT!)? Check out the following graph. Note the servo response around neutral—for a VERY SMALL stick movement, the servo response is HUGE! This is why you should be very careful to input the correct values (either positive or negative, depending on your radio and the softness/sensitivity desired)!
When would you choose to use this kind of exponential? As the graph text states, perhaps for airplanes that exhibit sluggish response, or for 3-D models, or (so I’m told) for some helicopter tail rotor applications.†
Exponential values are usually assigned as part and parcel of assigning different (dual) rates, and therefore are controlled by the same switches. You can, for instance, set exponential values for one rate (such as the high rate) but not for the other, then compare the response when you fly. (Remember, however, that lower rates don’t give you full control authority…!)
There are variations of these functions. One of these is called:

@wingmanbunty
Glad that you learnt about expo and dual rates.
But why did you make these last two posts?
The manual that comes with the RC usually contains this info.

Also when you post material that is not authored by you, the source should be mentioned.
Regards.

i will take care next time sir

i thought it could be helpful to anyone else in the same situation.

hello

 anybody know which kind of  bond to use for  joining

coro sheet and thermocol

hot glue & Araldite clear 5-Minute epoxy   :hatsoff:

5-min epoxy works great. While using hot glue, cover the thermocol with clear tape and then apply hot glue to both the surfaces.

thanks wing man bunty sir.
it helped me

new tow launch glider build

from coro, hd thermo col,steel tube

desire to perform very long distance glide ,and improve myself in airfoil design.

wing 120 cm
length 80 cm

@wingmanbunty
Good start.
Pl share
Wing area and all up weight.
RC or Free Flight?
Why steel tube?
How is the glide?
How well does it tow?

@kk iyer sir
The source of inspiration is your glider  :iagree:
It travel more than 50 feet at 5 feet gentle hand launch  (1:10) but it is no near to the performance of you glider
Wing cord at the centre is 6 “ and at the tip is 3” length is 120 cm
(total wight 380 grm ) Nose weight is 200 grm bec wind is blowing hard now a days
No rc,no servo , no motor installed
There is a L hook and I pull it in the air buy kite rope at that time I dcrease the nose weight to 150 grm.
Problems
1. When I tow the glider , glider got released at half the distance I mean 45 degree
I am expecting it to be above my head ie 90 degree
What could be the prob.
2. I build it to understand airfoil shape
  As the length of the wing increases its tendency to bang on one side also increases, sir how to improve it in the construction level
I want to say wing become more sensitive to the turn as length of wing increases.and this turn sometime result into stall .

swing wing mechanism glider


material used coro sheet.
bamboo stics
bicycle spoke
rubber band to launch

length 32cm
wing 42 cm

glider is launched by rubber band  .wing unfold when it reaches to height

good for park flying

@wingmanbunty,
It may interest you to know that this idea is 84 years old.
This model used to be sold by India's Hobby Centre since over 50 years back.

Good that you are reviving the idea. Wish you success.

http://www.oldwoodtoys.com/american_junior.htm (http://www.oldwoodtoys.com/american_junior.htm)

I remember I saw this during my last visit to India Hobby Centre at Kolkata.

servo installed in eurofighter



https://www.youtube.com/watch?v=r1nLHwc9mZ0&feature=youtu.be (https://www.youtube.com/watch?v=r1nLHwc9mZ0&feature=youtu.be)

trainer airplane

https://www.youtube.com/watch?v=Z8QD0JD2dOQ (https://www.youtube.com/watch?v=Z8QD0JD2dOQ)

yes KK Iyer I had one brought from India HoBBY CENTRE when I was 12 it was spitfire with a iron weight fixed on its nose for CG
It also had a wing adjustment front of shifted behind would give short or long flight , the balsa wood had some peculiar smell also

its recall of childhood memory.


 i used to build by card board.and i used to paint it with water color.



i also used to build thermocol glider which is lauched by kite rope .


there is one other in which propeller was powered by rubber band , and propeller used to rotate by the energy stored in the rubber band.i made several of them.

trainer crashed, modified wing tip, will it work


My trainer airplane got crashed when I flew in heavy winds before rain, I was performing sharp turns and it got stall   it break in  two parts I had done the repairing and modified its wing tip

Iyer Sir...... That was my first model......

My first coro build eurofighter was not success because the avionics transmitter perform error in delta configuration
I decided to build simple aileron and elevator  su 30 mki , it fly well but it require more power for aerobatics

Now learning from both my coro model decided to build again the eurofighter with aileron and elevator
This setting work well with my transmitter for power I want to use 8x3.8 size prop with my 1700 kv motor
That will give me 450 to 650 grm of thrust

i know the coro has strength and  performance problem for parkjets biofoam is best but i want to try

 I decided to build it what expert think should I go with the plan       :headscratch: :headscratch: :headscratch:

what matterial used in this f 22 raptor
 
wings seem to me in coro

Sanjay sir has made it entirely from coro...

@topalle

thanks for the information sir

and thanks to all how reply my pm related to building material of parkjets

As was searching coro build parkjets now it is proven that Coro can be used for building park jets
The only issue is the material is heavy
But the aircrafts build fly very fast
Second the crash resistant behavior of the material
If the model is build form balsa wood or thromocol any kind it will explode at the crash but coro model can handle lots of crash
So for the experimental rc aircrafts coro is a good matrial to chose from
This is a proven design from flite test
http://flitetest.com/articles/ft-22-raptor-build (http://flitetest.com/articles/ft-22-raptor-build)
sir is having  very good at the skill level so they  build and fly it in coro.aircraft also looks very neat and clean .

I crash last coro airplane learning aerobatics, but very hardly survive the motor
I am showing you the jugad  and installed it in my next airplane
It become very hard to get back to build new airplane after losing some equipments
Sometime it takes months to get back to flying

it is written on avinoic motor manual
that  1780 kv gives 650 grm thrust with 8.38 sf propeller

what is the practical way to see

that motor(avionic 1780 kv) is producing 650 or 600 gram of thrust with 8.38sf prop

or what ever grm of thrust

is weight machine is used to calculate that with full throttle   :giggle:
this seem to be funny so i make fun myself

but getting this information will be very very helpful to model build and improvement in model design

Iyer sir i am waiting 8-)

For details of Test rig?

Bunty, read pages 2 & 3 http://www.rcindia.org/electric-power/selection-of-motor-esc-prop-and-lipo-for-foam-planes/msg194411/#new (http://www.rcindia.org/electric-power/selection-of-motor-esc-prop-and-lipo-for-foam-planes/msg194411/#new)

Is that only way i mean it is good and simple way but little out of topic but how we measure a paramoror thrust or small microlight engine thrust ,is it same method at large scale.

sorry gone out of topic.

Goo d question, long, long answer :D

We use a Dynanometer. This can measure torque, rpm, and therefore power. Note: this is only on a motor or engine (or a Prime Mover). When a motor spins a prop, there are empirical calculations to determine the thrust, knowing the RPM.

In simple theory, a 10X7 prop will travel 7" in one revolution. Now this is in a non-compressible media! At 1000 rpm, that is 7000 " per minute. As I said, there are empirical equations (ie extrapolation of measured data for a medium) to give us this data.

Power = torque X rpm, also = rate of doing work = force X distance /time.

For a basic idea about Dynamometers read Wiki. In my college in the Mech. Engg. IC Engine Lab we had Prony Brake & Eddy Current Dynanometers. http://en.wikipedia.org/wiki/Dynamometer (http://en.wikipedia.org/wiki/Dynamometer)

It is not funny, it is the correct concept.

The simple test rig is about as simple as it gets. You could tie the tailwheel to a scale and tie the other end to a table leg. I have done this before. But you need 2 people - one to manage the model in case it tilts over and bang! goes the prop and maybe a lot more :D

Thanks  sanjay sir , kk iyer sir

Here is my thrust testing setup 

https://www.youtube.com/watch?v=LA4A0VfFEak (https://www.youtube.com/watch?v=LA4A0VfFEak)

Bunty,
Can't make out any detail in the video!
Pl post a pic.

kk iyer sir

 i am inspired by your rig , i must say not inspired but i copied it  :hatsoff:

 ie just fitted inverted prop and fixed the setup on a book with some rubber band and coro sheet .

for testing i put the thrust line at the center of the weight machine to get batter result as you can see in the video

i perform this test to get approx idea of grm of thrust produced by different propeller

i know it is not complete setup ie amp , watt or any electrical or rpm calculation

is not there .

but i really i do not want it right now .

@wingmanbunty
Well done.
You have stumbled across a very important point!
Eent ka javab pathar se nahin, kitab se!

t

http://youtu.be/k6Bjy6IBE9k

my new rc experimental project  (su -30 mki)  with the help of  Mr. bl jangid sir. its totally build up ordinary thermocol material .its in the testing phase as the project completes I will post all the details of the model, I am able to have a maiden flight of the plane.

.

https://youtu.be/tPlXzRQBJak

Beautiful bunty. liked your plane.
plane is not much visible in the video. would love to watch clear video.

 :hatsoff:

Very nice Bunty  {:)} {:)}

 :hatsoff:

Great Build. !!! {:)}