RC India

Hi everyone,
I had a look around this website and found that almost everybody seems to have an idea of what they are doing, before asking any questions. My case is may seem very peculiar.  :help:

I did some research and found out that you have to pick a motor first, then you have to pick propellers which work the best with the motors. I decided that I would keep the motor-to-motor distance to 18 inches. I did some more research about the payloads and parts of the quadcopter and estimated the total weight of the setup to be around 1kg. I want to build this quadcopter only for the fun of it, hence 30 min of flight time will be enough. My budget is 9000 INR.

Now, my problem is, which motors can I pick which will give me the required 2400g of thrust to overcome gravity (I need the 400g of thrust for backup). I can figure out the required props and battery. But, if you have any suggestions for them, I would appreciate it.  :hatsoff:

 

i think  must keep your budget a bit higher,9k is a very tight budget

You need to be more elaborate, such as do you already possess a radio or for that matter anything that can be used for a quad?

-You can start with tricopter, will reduce some expense, and you can later upgrade at any point of time.
-10/15mins is the max flight time that multirotors usually have, 30 mins is a wee bit more.

Hello ratuldas6
Welcome to the forum.
So, you are from Varanasi. I think you are the first person from varanasi here. I live in Allahabad.
So, you are planning to make a Quadcopter. 30 mins. flight is really a long flight time and in 9000 it is difficult. Also,  as I believe you are a beginner therefore, in my opinion you should first of all spend some time on building your flying skills. Try learning flying on a simulator. Try to arrange it or order one for you.  At IIT-BHU you would get some help in local, since, there are people from this field. After learning flying you could go for building something of your own. If 9000 is your budget go for an RTF kit available on different stores. Make something. Learn some flying on it and then make something of your own.

 :hatsoff:

This question is very stupid but could you please tell me that how much should I increase my budget to make it more feasible?


I currently don't have any equipment except the materials for making a frame.

I heard that there are problems regarding the yaw of tricopters and it is trickier to program than a quadcopter, so I would prefer a quadcopter to a tricopter.

Increasing the battery capacity would obviously help me.



Could you recommend a simulator for a quadcopter that I can try. I am familiar with the controls, but I have never actually flown a quadcopter. The only RC toy I have ever flown was a Dragonfly helicopter.

And yes, I live about 500 meters from the BHU Campus. I thought the same as you. But I am really surprised that no one from Varanasi is interested in quadcopters, or for that matter, any RC vehicles.. My father had a transfer order from Bhopal, MP to Varanasi about 6 months ago. Is someone from Bhopal active here?

I could, of course, increase my budget if necessary. I am not very interested in buying a RTF kit. They are quite similar to RC toys.
I am looking for a challenge.

If you don't have anything, then 9k budget wont suffice, and how much you need to increase budget depends on the radio you want to invest in. A programmable 6ch radio is good enough but a module based 9ch radio such as turnigy 9X or 9XR or Flysky th9x are ideal radios with options to upgrade further as you move ahead in the hobby.

If you increase the battery capacity again you need to increase your budget. Programming quad or tri is trickier depending on the FC you intend to use and skills and attitude you posses. Setting up a kk2,2.1 or 2.1.5 is easier than multiwii or ardupilot etc. Then there is Naza which is easier to setup but costs a lot.

Another factor that comes into play is from where are you going to source items, locally or internationally. Locally, items are costlier but free from hassle of duty,custom troubles etc, also out of stock at times. If internationally items are cheaper but shipping as well custom duty comes into play.

I will give you a rough idea, 15 to 20k is needed for a quad as per your requirements. You can get it done below 15k, but then you would be getting items that are not very efficient quality-wise. But in your case as you haven't even flown a plane, I am with Utkarsh, go with an rtf or as you said rc toys, they have similar flight characteristics as any other quad, and a good way to start instead of going for a build the first time itself. They can also take some amount of beating and its cheap! Its better than a simulator too IMO. And trust me flying a quad itself is challenging.If you have someone with experience to help/support you then its a different story.

Just an example of what you can get as an rtf

http://hobbyking.com/hobbyking/store/__27838__Walkera_QR_Ladybird_V2_Ultra_Micro_Quadcopter_RTF_Mode_2_.html (http://hobbyking.com/hobbyking/store/__27838__Walkera_QR_Ladybird_V2_Ultra_Micro_Quadcopter_RTF_Mode_2_.html)

http://www.rcbazaar.com/products/1865-mini-beetle-quadcopter-rtf.aspx (http://www.rcbazaar.com/products/1865-mini-beetle-quadcopter-rtf.aspx)

 :iagree: with sidewinder.
So, regarding simulator, I myself use Real flight 4.5 and phoenix RC. Phoenix Rc does have a Quadcopter. Don't know about realflight. It does not runs fluently on my system ;) ;). Now, if you want to order one simulator for you then follow the link:
http://www.quadkopters.com/product/12-in-1-new-simulator/ (http://www.quadkopters.com/product/12-in-1-new-simulator/)
http://www.rcbazaar.com/products/810-avionic-integrated-simulator.aspx (http://www.rcbazaar.com/products/810-avionic-integrated-simulator.aspx)
I'm not sure about stock of quadkopters. It is in red but showing few pieces left.

 :hatsoff:

I would like
I am sharing the budget with a friend of mine. So, now the actual budget is about 16k or so.
I need a bit more information about channels in radios. I will probably research it in an hour or so. But I think that 9ch is better, as more features can be programmed if required ,and I am planning to add a barometer and a GoPro camera for live streaming. Will have to look for a Turnigy now.

I want to set up a KK2.0 on the quadcopter. I heard good reviews about this FC. Do they come with a guide for dummies?

Taking into account the average knowledge of customs officers    :-\ , I have a huge likelihood of getting into trouble. Is there still any way to prevent such hassles, if at all possible?

I have a friend who is willing to help me a bit in programming the FC. For other parts, I need to get some help from BHU. As a matter of fact, the BHU Campus is about 600 meters from where I am typing this post (my room).



Thank you for your input. I will download Real Flight after I upgrade my GPU.  :)

As a matter of fact, these days ordering things from international stores is very time taking. I believe almost every one must have faced custom issues :banghead:. Its better to order things from Indian stores. Although, you'll have to pay a little more but you'll get your things on time.
Still, yes you can prefer international stores since, cost is also an important parameter.

Any good sites for ordering the quadcopter parts?

Indian or international?

Indian, as you said that there are no problems with the customs.

Maximum items are out of stock on indian stores. Still, you can go through these links:
www.rcbazaar.com (http://)
www.quadkopters.com (http://)
www.rcdhamaka.com (http://)
www.rcelectro.com (http://)

I forgot to ask one thing, how can I generate 2.4kg of thrust to lift a 1kg quadcopter? Need an answer. I will use 9x5 propellers :
https://www.hobbyking.com/hobbyking/store/__11332__9x5_Propellers_Standard_and_Counter_Rotating_6pc_.html (https://www.hobbyking.com/hobbyking/store/__11332__9x5_Propellers_Standard_and_Counter_Rotating_6pc_.html)

And also, which battery is to be used here to get 15-20 minutes of flight time?

Cf 2822 with an 10" prop is enough I guess the motors are also just 600 inr on rcdhamaka

This is exactly what I was looking for, thanks a lot :) . I would need a little more details though.

Were you talking about this motor? I looked it up rcdhamaka.
http://www.rcdhamaka.com/index.php?main_page=product_info&cPath=100_93&products_id=391 (http://www.rcdhamaka.com/index.php?main_page=product_info&cPath=100_93&products_id=391)

What is the pitch of the propeller that you are referring to (10inch dia.)? Could you please write the links?

http://www.quadkopters.com/product/sf-propeller-104-5-sf104-5-orange/ (http://www.quadkopters.com/product/sf-propeller-104-5-sf104-5-orange/)

http://www.quadkopters.com/product/sf-propeller-104-5-sf104-5-green/ (http://www.quadkopters.com/product/sf-propeller-104-5-sf104-5-green/)

Also, you should use different colored front and rear propellers. This is because quadcopters have a very symmetrical design and it's very easy to lose orientation. The different colors help you judge which side is front.

If your power set up is final then now you should think about frame. For that either go for an 450mm airframe that is available on all stores under 1.5K or you can build one for yourself. You can use wooden strips of 10-15mm cross-section for making arms or best according to me is aluminium square cross section tube which comes in 12mm size. I'd myself used that in my quadcopter. For centre plate go for glass fibre plate or try some other hard material that weighs less and has some strength in it.
Also, you should follow maahinberi's advice about the props. Use different colour props, for eg: one pair(CW, CCW) in black and other pair any other colour. Also, whenever place an order for props please do order at least two pairs extra :giggle:. I'm attaching pics of both my frames for reference.
 :hatsoff:

As in my second pic, aluminium frame, you can put coloured tapes as well or paint your arms(I too have to do that) for keeping it more clear while flying. Just don't use same colour on all four arms :giggle: :giggle: otherwise it would be useless. Same thing as in props, two different colours to be used again.

That issue had passed through my mind, but my solution was to put something that would help me to recognize that which side was the front. I agree that the propellers are a good idea.

The props you mentioned in your post, do they sell 2 pairs of a colour (2CW, 2CCW) in each set? Or do they sell only one pair with each purchase? And how is the reliability of these props?

 

I would prefer the aluminum frame as it has a lesser chance of breaking than the other materials. Also, I will colour the arms same as the propellers if possible.

What would be the total weight of the setup now (approx.)?

Hi Ratul,
I am using the same props on this quad. The quad is built using 1cmx1cm cross section wooden beams. The beams have been slotted into each other at the center and glued with epoxy. The center plate is also made using plywood. The motor to motor distance is about 400mm and the diagonal distance from one motor to the opposite motor is approximately 550mm.
It has the following motors:
http://www.quadkopters.com/product/221213-1000kv-brushless-outrunner-motor-with-mount/ (http://www.quadkopters.com/product/221213-1000kv-brushless-outrunner-motor-with-mount/)

And with a 3S 2200mah battery (link follows), It gives me 6-8 minutes of flight time.
http://hobbyking.com/hobbyking/store/__8932__Turnigy_2200mAh_3S_20C_Lipo_Pack.html (http://hobbyking.com/hobbyking/store/__8932__Turnigy_2200mAh_3S_20C_Lipo_Pack.html)

The motors have been mounted using zipties and this goes a long way to save your motors. After a crash, the motor shaft does not get bent or break off, only the zipties break. Use a new set of zipties and you're back flying.

While trying to flip this, quad, it crashed sideways (Directly on two arms) from about 60 feet in the air and only the zipties and props broke. Nothing happened to the frame or the motors.

The landing gear is made out of thermocole and plastic tubes.  :giggle:

They sell one pair, i.e. One CW and one CCW

Use a 3000 mah and 30c lipo atleast as you need to power the motors which take 15.5 amps and you need to power the FC also.
FC
http://www.quadkopters.com/product/mwc-lite/ (http://www.quadkopters.com/product/mwc-lite/)
http://www.quadkopters.com/product/kkmulticopter-v5-5-controller-blackboard/ (http://www.quadkopters.com/product/kkmulticopter-v5-5-controller-blackboard/)
Charger
http://www.quadkopters.com/product/b3ac-charger/ (http://www.quadkopters.com/product/b3ac-charger/)
ESC
http://www.rcdhamaka.com/index.php?main_page=product_info&cPath=100_95&products_id=1113 (http://www.rcdhamaka.com/index.php?main_page=product_info&cPath=100_95&products_id=1113) * 4
Motor
http://www.rcdhamaka.com/index.php?main_page=product_info&cPath=100_93&products_id=391 (http://www.rcdhamaka.com/index.php?main_page=product_info&cPath=100_93&products_id=391) * 4
Battery
http://www.quadkopters.com/product/qk-lipo-3300mah-11-1v-25c50c/ (http://www.quadkopters.com/product/qk-lipo-3300mah-11-1v-25c50c/)

So the total without the radio for all the electronics comes to around 8500 take another 1000 for props, building materials, connectors, etc.
So total without radio 9500
Weight of battery, motor, FC and ESC comes to something around 550 add another 500 grams for the other miscellaneous stuff So weight is something around 1kg.
Best of luck for your project.
BTW are you interested in a micro quad

I would actually suggest KK2.0 or KK2.1 for a beginner. It is very stable and very easy to set up.
Link:
http://www.quadkopters.com/product/kk2-1-multi-rotor-lcd-flight-control-board-with-6050mpu-and-atmel-644pa/ (http://www.quadkopters.com/product/kk2-1-multi-rotor-lcd-flight-control-board-with-6050mpu-and-atmel-644pa/)

Here is the link:
http://www.quadkopters.com/product/kk2-1-multi-rotor-lcd-flight-control-board-with-6050mpu-and-atmel-644pa/ (http://www.quadkopters.com/product/kk2-1-multi-rotor-lcd-flight-control-board-with-6050mpu-and-atmel-644pa/)

if he has the budget then he should go for Multiwii with cirius OLed moule as I've seen a friend of mine facing issues with kk2.0.
http://www.quadkopters.com/product/crius-multiwii-se-v2-5-with-ftdi-and-usb-cable/ (http://www.quadkopters.com/product/crius-multiwii-se-v2-5-with-ftdi-and-usb-cable/)
http://www.quadkopters.com/product/crius-co-16-oled-display-module/ (http://www.quadkopters.com/product/crius-co-16-oled-display-module/)

I haven't flown with the MultiWii.
I personally use a kk2 and have not faced a single problem with it. Moreover, it's very very stable, almost hands off.

I was a bit late in answering all the replies. But it is better to be late than never :) .
I am not sure about the thrust produced by this quadcopter, what is the thrust:weight after calculating the total approximate weight of this model?

I still need to get the total weight. But the cost is nearly 11k. Thanks to all of you guys, I have been able to compile a list over these two days. If you think that the cost can be reduced, or there is a better alternative to one of my choices, do not hesitate to make a post.

1> Frame (DIY)                                           - 200 (approx)

2> Flight controller                                       - 2450
(http://www.quadkopters.com/product/kk2-1-multi-rotor-lcd-flight-control-board-with-6050mpu-and-atmel-644pa/ (http://www.quadkopters.com/product/kk2-1-multi-rotor-lcd-flight-control-board-with-6050mpu-and-atmel-644pa/))

2> 4 Motors                                                - 2380
(http://www.rcdhamaka.com/index.php?main_page=product_info&cPath=100_93&products_id=391 (http://www.rcdhamaka.com/index.php?main_page=product_info&cPath=100_93&products_id=391))

3> 4 ESCs                                                   - 2636
(http://www.rcdhamaka.com/index.php?main_page=product_info&cPath=100_95&products_id=1113 (http://www.rcdhamaka.com/index.php?main_page=product_info&cPath=100_95&products_id=1113))

4> 8 Propellers - 4CW, 4CCW (spares included)  - 1200
(http://www.quadkopters.com/product/sf-propeller-104-5-sf104-5-orange/ (http://www.quadkopters.com/product/sf-propeller-104-5-sf104-5-orange/))
(http://www.quadkopters.com/product/sf-propeller-104-5-sf104-5-green/ (http://www.quadkopters.com/product/sf-propeller-104-5-sf104-5-green/))

5> 4 plastic balls for landing gear                    - 20
(Need to go to a kids toy shop)

6> Power Distribution Board                            - (Has it been mentioned here? If so, I must've failed to notice it. Please fill this up  :help:)

7> Machine screws (galvanised)                      - 50 (approximations have done lot of help to mankind  :giggle: )

8> Super Glue                                              - -- (unmeasurable quantity. not taken into account)

9> Battery (3S 11.1V)                                   - 2050
(http://www.quadkopters.com/product/qk-lipo-3300mah-11-1v-25c50c/ (http://www.quadkopters.com/product/qk-lipo-3300mah-11-1v-25c50c/))

I don't know anything about micro quads. But, I assume that they are autonomous quadcopters. If that is the case, then yes :D I am interested. I love robots.

No, micro quads are not autonomous.
A Power distribution board is basically used to provide power to 4 ESCs from one battery.
http://hobbyking.com/hobbyking/store/__23140__Hobby_King_Quadcopter_Power_Distribution_Board.html (http://hobbyking.com/hobbyking/store/__23140__Hobby_King_Quadcopter_Power_Distribution_Board.html)

I see that RCDhamaka keeps power distribution boards, but they are out of stock. You can also use this:
http://www.quadkopters.com/product/xt60-to-4-x-3-5mm-bullet-power-breakout-cable/ (http://www.quadkopters.com/product/xt60-to-4-x-3-5mm-bullet-power-breakout-cable/)

This is what I'm using on my quad.

I would suggest getting one more set of props, i.e. 12 props in total, but you can always order again later.
I notice that you haven't added a battery charger to your list. Do you already have a LiPo charger??

So, what is the difference between a PDB and a bullet Power Breakout Cable? Are these available locally?


Yes, I had forgotten about that bit. You had mentioned this charger earlier. Let's add it to the list.
http://www.quadkopters.com/product/b3ac-charger/ (http://www.quadkopters.com/product/b3ac-charger/)

The cost is approximately 11,550 INR now.

Both the board and the cable serve the same purpose. Just the form factor is different. The cables tend to get messy at times due to clutter of cables, so if you want to keep it neat, you can go for the board. The cable is available locally at QuadKopters.

Neatness is not a priority. I can remember which wires go where. Ask my computer, it has a huge mess of wires, but it still keeps working.  ;D
I want to make the frame with aluminum. What should be dimensions of this frame? And also, what will be the total weight of the setup? I need to get the thrust:weight ratio after the final weight is obtained.

Aluminium might become heavy. My quad is exactly 1kg. Thrust to weight ratio is perfect and it is very durrable

Hovers at half throttle and has more than ample power

@maahinberi aluminium frame is not that heavy. It is even more crash proof and has good strength. My quad weighs under 1kg with motor to motor distance 50cm.

Hey Ratul,
If you want to go with an aluminium frame then go to any local hardware shop and ask for 12mm aluminium tube with square cross-section. It comes in full length of almost 12 feets. If you would be lucky then he'll cut it for you otherwise you'll have to take whole. I don't know the price there, but here it is available for Rs.120 full length. Now, comes the main centre plate. you can use any wood or best is glass fibre plate. You'll get that on shops that deal with sign boards etc. Plate also done. So, now just have some tools, some zip ties for tying ESC's, few nuts and bolts and of course a drill machine. Assemble your frame. Keep length of each arm either acc. to standard SK450 frame or yours. Don't go for motor to motor distance above 45cm. Otherwise, you'll have a big airframe that is much more heavy. Weight would be almost 250-300gm.
 :hatsoff:

You'll be also needing a power distribution board. If you are familiar with softwares such as Express PCB or Eagle, then design one yourself. But, in my suggestion, buy one for you. These are easily available on all stores. Also, ones I remember arun.sreekalam here on forum was selling one. Don't know whether he has it or not. Check ones.
 :hatsoff:

Check this:
http://www.quadkopters.com/product/xt60-to-4-x-3-5mm-bullet-power-breakout-cable/ (http://www.quadkopters.com/product/xt60-to-4-x-3-5mm-bullet-power-breakout-cable/)

Aluminium is more durable than carbon fiber and or wood. But I am still deciding the dimensions of the frame I am going to make. And also, which material have you used to make your quad's frame?


I am planning use 10x4.5 propellers. The frame will be made out of 12mm aluminum tubes. As you say, any frame bigger than 45 cm will add unnecessary weight. Will a frame that has a motor-to-motor length of 18 inches (45.7 cm) work well? Or is it a bit more than necessary?

In the previous posts, maahinberi had recommended the same power breakout cable as the one you have mentioned. I suppose that this component negates the need of using a power distribution board.

Is there a circuit diagram for the whole setup?

Yes, 45.7cm seems to be no problem. Just ensure the power setup that you've decided is capable enough for that. And, the power breakout cable could be used without worries. I'm leaving you with an other option too. Check this out:
http://www.sp4mm3r.com/connectors-wires/quadcopter-power-distribution-board.html (http://www.sp4mm3r.com/connectors-wires/quadcopter-power-distribution-board.html)
When are you going to start building... Now, come into action. Just make a list of all the things you need, place an order for them and then buy all airframe and construction related things from local market.
 :hatsoff:

You will have to connect one positive and one negative wire from your power cable to each ESC. The Signal cables from the ESC go to the right side ports on the KK2, as shown in the picture.
The cables from your receiver go to the left hand side ports.
The cable marked as Auxillary is connected to Channel 6 on my Rx and is used to toggle on/off self level mode. You can keep this on any channel you want. If you don't want to keep self level mode on a separate channel, you can also use the main sticks to turn on/off self level mode.
As you notice, all the signal wires go towards the screen (i.e. all the orange colored wires are towards the screen. If you have a red, black, white wire, then keep the white wire towards the screen.)
This reminds me, you will also need Male to Male servo extensions to connect your Receiver to the KK2:
Either
http://www.quadkopters.com/product/male-to-male-servo-lead-jr-3cm-10pcs/ (http://www.quadkopters.com/product/male-to-male-servo-lead-jr-3cm-10pcs/)
Or
http://www.quadkopters.com/product/male-to-male-servo-lead-jr-10cm-10pcs/ (http://www.quadkopters.com/product/male-to-male-servo-lead-jr-10cm-10pcs/)

I will need to see whether the thrust is capable of lifting the quad at half-throttle. What will be the thrust generated by 4 EMAX CF2822 motors with 10x4.5 propellers?

I will go with the power breakout cable. No need to solder here.

I will order the materials at the end of May. That is when my summer vacations will start. I will have plenty of time then. I might buy the parts for making the frame soon.

The thrust should be enough to lift at half throttle.

Which receiver would you recommend? And also, are the servo leads available locally?

@ratul he is talking about the receiver of your radio. Which radio set you are having?
'Servo leads' or male to male servo extensions as rightly said are difficult to find locally. Yes you could find them on stores having robotics stuff. But, they are bit over sized. You need a few jumper cables. Either order them from some store make on your own. Link is as follows:
I use this for making my male to male servo extensions. You just need to pull the wire from white connector and then solder them together as you need.
http://www.rcbazaar.com/products/237-transmitter-wire-13p-to-jr-housing.aspx (http://www.rcbazaar.com/products/237-transmitter-wire-13p-to-jr-housing.aspx)
Also, just a suggestion, although "money" is a big problem :giggle: but whatever things you've to order online kindly do it ASAP. Sometimes, things are out of stock whenever you need them.
 :hatsoff:

I don't have a radio set (receiver and transmitter), that is why I was asking him for any good recommendations. I need a receiver which has 6 channels. My priority would be to make a working quadcopter first. Then I will look forward to adding a camera, a self leveling mode, etc.


I will order the servo leads which maahinberi had suggested:
http://www.quadkopters.com/product/male-to-male-servo-lead-jr-3cm-10pcs/ (http://www.quadkopters.com/product/male-to-male-servo-lead-jr-3cm-10pcs/)
http://www.quadkopters.com/product/male-to-male-servo-lead-jr-10cm-10pcs/ (http://www.quadkopters.com/product/male-to-male-servo-lead-jr-10cm-10pcs/)

Even if I order the parts right now, I won't be able to start assembling the quadcopter, as my school reopens on the 7th of April. 

So you want a 6 channel radio. See, radio's come in variety of ranges. Your requirement is a 6 channel radio, then you should now decide how much you can invest. 6 channel radio's start from 2000 to above and come in programmable an non-programmable versions. Secondly, maximum websites are out of stock.
Also, I said to place an order for items just in case if things get out of stock then you'll be left with no option. So, if possible place an order and it is on you when you want to start with. Still, it is just a suggestion so it is on you.

So you want a 6 channel radio. See, radio's come in variety of ranges. Your requirement is a 6 channel radio, then you should now decide how much you can invest. 6 channel radio's start from 2000 to above and come in programmable an non-programmable versions. Secondly, maximum websites are out of stock.
Also, I said to place an order for items just in case if things get out of stock then you'll be left with no option. So, if possible place an order and it is on you when you want to start with. Still, it is just a suggestion so it is on you.

Sorry for posting it twice. Poor internet connection. :banghead: :banghead:

Ratul,
This is a nice transmitter. It is one of the cheapest programmable transmitters you can find:
http://www.rcbazaar.com/products/2011-avionic-rcb6i-24ghz-6ch-transmitter-with-receiver.aspx (http://www.rcbazaar.com/products/2011-avionic-rcb6i-24ghz-6ch-transmitter-with-receiver.aspx)

The problem is that it is out of stock. I would suggest you contact RCBazaar and check up when it will be back in stock.
Review of this transmitter by a fellow RCIndia members:
http://www.rcindia.org/radios-and-receivers/rcb6i-6ch-txrx-with-back-lit-screen-soon/msg155725/#msg155725 (http://www.rcindia.org/radios-and-receivers/rcb6i-6ch-txrx-with-back-lit-screen-soon/msg155725/#msg155725)

http://www.rcindia.org/radios-and-receivers/rcb6i-6ch-txrx-with-back-lit-screen-soon/msg155879/#msg155879 (http://www.rcindia.org/radios-and-receivers/rcb6i-6ch-txrx-with-back-lit-screen-soon/msg155879/#msg155879)


Getting a transmitter from an international site is a big headache. It might get stuck at customs and then you will have to obtain a WPC Clearance etc. etc. It's a tedious process.
The problem with buying a Transmitter from India is that they are almost all the time out of stock.

That being said about budget radios, it is always better to go for a proper radio, because if you decide to stay in the hobby, you will soon need a transmitter that gives you more features. In that aspect the Turnigy 9X (Also, goes by the name Flysky TH9X) Is a very popular choice. Not only does it provide many features, it has 9 channels and is quite reasonably priced.

http://www.rcbazaar.com/products/397-fs-th9x-9ch-24ghz-transmitter-receiver.aspx (http://www.rcbazaar.com/products/397-fs-th9x-9ch-24ghz-transmitter-receiver.aspx)

http://thehobbyshop.in/index.php?main_page=product_info&cPath=27_59&products_id=128 (http://thehobbyshop.in/index.php?main_page=product_info&cPath=27_59&products_id=128)

http://www.rcbharat.com/4ghz-systems/12-fly-sky-9ch-tx-rx.html (http://www.rcbharat.com/4ghz-systems/12-fly-sky-9ch-tx-rx.html)

http://www.quadkopters.com/product/flysky-fs-th9x-2-4g-9ch-system-tx-rx/ (http://www.quadkopters.com/product/flysky-fs-th9x-2-4g-9ch-system-tx-rx/)

Again, all out of stock....... :banghead: :banghead:

Another option is to order from abroad, with the risk that it might get stuck at customs. However, many people have been able to escape customs. I am not very sure of the exact procedure, but you basically search on Google for the WPC Clearance for the Turnigy 9X Transmitter and you send a soft copy of this to HobbyKing via LiveChat while ordering and ask them to include this clearance document along with the transmitter.
Other members would be able to help you better in this as I have personally never tried this.
http://hobbyking.com/hobbyking/store/__8992__Turnigy_9X_9Ch_Transmitter_w_Module_8ch_Receiver_Mode_2_v2_Firmware_CN_Warehouse_.html (http://hobbyking.com/hobbyking/store/__8992__Turnigy_9X_9Ch_Transmitter_w_Module_8ch_Receiver_Mode_2_v2_Firmware_CN_Warehouse_.html)

How is a WPC Clearance obtained?

RCB6i will be in stock in the 2nd week of april

I would suggest you make a new post with title "How to order a Transmitter from International Sites" on the forum. People will read the topic and be able to help you better. Also, if somebody needs help regarding this in future, they will be able to refer to that post.

Thanks a lot for the info. Will look forward to ordering them as soon as they are in stock.


I would've done that, but there are a lot of problems. First of all, if the radio set comes from outside the borders, we have to deal with the customs. They are very unpredictable, from what I gather. Then, we have the WPC Clearance to obtain. These sorts of problems are encountered whenever one orders any electronic part from an international site.

International order... be sure before ordering because issues such as customs, late deliveries would rise.  Also, tight security right now due to election.

Got something for you out of all websites. No radio anywhere.
http://www.sp4mm3r.com/transmitters-receivers/turnigy-5x-5ch-mini-transmitter-and-receiver-mode-2.html (http://www.sp4mm3r.com/transmitters-receivers/turnigy-5x-5ch-mini-transmitter-and-receiver-mode-2.html)

I think waiting for the Rcb6i will be a good decision. Nothing beats the price of that transmitter.

However, if you want an 8 channel transmitter, the following is available without a module:
http://www.rcproduct.in/-24ghz-turnigy-india/25-turnigy-9xr-transmitter-mode-2-no-module.html (http://www.rcproduct.in/-24ghz-turnigy-india/25-turnigy-9xr-transmitter-mode-2-no-module.html)

To which you can add this module:
http://www.edallhobby.com/product.php?id_product=600 (http://www.edallhobby.com/product.php?id_product=600)

In case you want a 9 channel radio, QuadKopters just got new stock of the FS TH9X
Order before stock runs out:
http://www.quadkopters.com/product/flysky-fs-th9x-2-4g-9ch-system-tx-rx/ (http://www.quadkopters.com/product/flysky-fs-th9x-2-4g-9ch-system-tx-rx/)

This Tx has a lot of features, and changeable module. Can be easily upgraded later, and is good value for money.

Yeah. quadkopters got two radio's in stock today. FS TH9X, FS T6. Place an order soon. I'd got both the radio's. Very nice both of them.

I am confused. The Rcb6i is not coming in stock. Somebody here told me that this Tx should be here by the 2nd week of April. But it looks as if the icon indicating the stock has crashed for my PC. Can anyone else check to see whether it works on their pc?

By the way, I looked up the FS-T6:
http://www.quadkopters.com/product/flysky-fs-t6-2-4ghz-6ch-transmitter-and-receiver/ (http://www.quadkopters.com/product/flysky-fs-t6-2-4ghz-6ch-transmitter-and-receiver/)

The cost seems reasonable, but I need some reviews, if anyone here has ever used this Tx.

You're a little late, both flysky radios are again out of stock.

@ratuldas6- I have both flysky radios, FS TH9X as well as FS T6. I'd used both of them several times and will have to say that these are very good radios in the price they are available. Also, if you are new to RC then both will serve you as a good beginner radio. By this I mean, people usually don't want to invest much in expensive radios in beginning. So, these are the ones that will serve you the best according to me. Both radios are programmable ones with lots of features. The FS T6 comes with a backlight pre installed which makes it more attractive.
Still you have a choice to go to other brands that are little/too costly but yeah very good quality wise.

I revised the whole setup. And here are the individual parts and their prices:

1> Frame - Wood / Metal / Carbon Fibre        - 200 (approx)
Aluminum (Motor-to-motor = 18 inches)

2> Flight controller                          - 2450
http://www.quadkopters.com/product/kk2-1-multi-rotor-lcd-flight-control-board-with-6050mpu-and-atmel-644pa/ (http://www.quadkopters.com/product/kk2-1-multi-rotor-lcd-flight-control-board-with-6050mpu-and-atmel-644pa/)

2> 4 Motors                                   - 2380
http://www.rcdhamaka.com/index.php?main_page=product_info&cPath=100_93&products_id=391 (http://www.rcdhamaka.com/index.php?main_page=product_info&cPath=100_93&products_id=391)

3> 4 ESCs                                     - 2636
http://www.rcdhamaka.com/index.php?main_page=product_info&cPath=100_95&products_id=1113 (http://www.rcdhamaka.com/index.php?main_page=product_info&cPath=100_95&products_id=1113)

4> 8 Propellers - 4CW, 4CCW (spares included) - 1200
http://www.quadkopters.com/product/sf-propeller-104-5-sf104-5-orange/ (http://www.quadkopters.com/product/sf-propeller-104-5-sf104-5-orange/)
http://www.quadkopters.com/product/sf-propeller-104-5-sf104-5-green/ (http://www.quadkopters.com/product/sf-propeller-104-5-sf104-5-green/)

5> 4 plastic balls for landing gear           - 20

6> Power Distribution Board                   - 330
http://www.quadkopters.com/product/xt60-to-4-x-3-5mm-bullet-power-breakout-cable/ (http://www.quadkopters.com/product/xt60-to-4-x-3-5mm-bullet-power-breakout-cable/)

7> Machine screws (galvanised)                - 50

8> Super Glue                                 - --

9> Battery (3S 11.1V)                         - 2050
http://www.quadkopters.com/product/qk-lipo-3300mah-11-1v-25c50c/ (http://www.quadkopters.com/product/qk-lipo-3300mah-11-1v-25c50c/)

10>Battery Charger                            - 550
http://www.quadkopters.com/product/b3ac-charger/ (http://www.quadkopters.com/product/b3ac-charger/)

11>Male to Male Serlo Lead                    - 300
http://www.quadkopters.com/product/male-to-male-servo-lead-jr-3cm-10pcs/ (http://www.quadkopters.com/product/male-to-male-servo-lead-jr-3cm-10pcs/)

12>Receiver and Transmitter                   - 3900
http://www.quadkopters.com/product/flysky-fs-t6-2-4ghz-6ch-transmitter-and-receiver/ (http://www.quadkopters.com/product/flysky-fs-t6-2-4ghz-6ch-transmitter-and-receiver/)

Now, the total is Rs 16066. What is the thrust generated by these motors? Does anyone here have a good estimated value in grams?

If am not mistaken the max prop by recommendation for that motor is 9*6 ... And the one you have chosen is 10*4 ... Its gonna draw more power or burn the motor .... Kindly check

You will get max 700g thrust on a 9" prop with 3s lipo ( https://www.youtube.com/watch?v=LzlVnwCNnh4 (https://www.youtube.com/watch?v=LzlVnwCNnh4) ). Since you are going for 8" props you can expect 600-650g thrust. This thrust is at max throttle. So your quad should be below 700gms approx to achieve liftoff at half throttle.

My suggestions would be go for a smaller battery like 2200mah and keep motor to motor distance to 12-13".

Similarly some items you selected are not available at the moment such as motors,radio. And link to Esc's is incorrect, but Im assuming they are 20amp esc's.

My suggestion is try to keep the weight as less as possible. A 3300mAh battery would give you a longer flight time but will add almost an extra 150gm to your model(as compared to a normal 2200mAh). So, it is better to go for a smaller battery and try keeping the weight as minimum as possible.
Motors you have mentioned are approx. 650-700gm thrust as quoted above. These motors are very good ones. Just ensure you don't loose the grub screw etc.
Also, go for a 8X4.5 prop only because 1045 would burn your motor(since recommended is 9")
 :hatsoff:

I am using these motors with 10x4.5 props:
http://www.quadkopters.com/product/221213-1000kv-brushless-outrunner-motor-with-mount/ (http://www.quadkopters.com/product/221213-1000kv-brushless-outrunner-motor-with-mount/)

The page says 850 grams but everywhere on the net people say that it produces around 750-800 grams with a 10x4.5.

My quad weighs 900grams, motor to motor (diagonal, from one motor to opposite motor) distance is 550mm.
Hovers at slightly less than half throttle. I fly using a 2200mah 3s battery, 8 minutes flight time.


These also seem like very good motors:
http://hobbyking.com/hobbyking/store/__12921__D2830_11_1000kv_Brushless_Motor.html (http://hobbyking.com/hobbyking/store/__12921__D2830_11_1000kv_Brushless_Motor.html)

They will easily run a 10x4.5 and will give you about 850grams of thrust. Order them using Air mail and it shouldn't cost you too much, though you will have to wait 12-14 days for shipping time.
With these, you can easily carry the bigger battery.

What is the best propeller for this motor? I thought that this propeller was good until I checked it on Drive Calculator. It says "Select Smaller Prop" and the maximum current drawn was more that the batteries could handle. Thanks for that though, I could've started buying the materials and then realized that I had made a bad mistake.  :hatsoff:


I am not sure which propeller to take as people are saying that 10*4.5 props would burn the ESCs. I am looking for a good propeller to use with the motor that I have mentioned.

How much flight time would a 2200mah battery give me with the aforementioned motors?

Yes, I checked my message and saw that the link for the ESCs led to the motors. I just edited the message, and the link is fixed now.


How much time would a 2200mah battery give?
Need some links for 8*4.5 props.



I heard that ordering from international warehouses is a lot of trouble. So, I am trying to find a good propeller to go with EMAX CF2822.
I am sort of disappointed that the model won't be able to carry 3300mah with these motors.

Hi ratul,
2200mAh will give you around 5-7 minute flying time. It depend actually on the weight. Minimum is the weight more is the flight time. Because, if your quad would take off at 60-70% throttle that means for keeping it in air you need to give atleast that much continuously. So, that will eat up your battery. If you can keep the AUW(all up weight) somewhere around 900-1200 gm then you can go for a 3300mAh too. It would give around 10 min. flight time.

Link for 8045 props:
http://www.quadkopters.com/product/8x45-propeller-set-green/ (http://www.quadkopters.com/product/8x45-propeller-set-green/)
http://www.quadkopters.com/product/8x4-5-propeller-set-black/ (http://www.quadkopters.com/product/8x4-5-propeller-set-black/)
To be noted adaptor ring set is not included in the above. So, you'll have to make adjustments for it.

Another link for props:
http://www.sp4mm3r.com/propellers-adapters/8045-sf-props-2pc-standard-rotation-2-pc-rh-rotation-red.html (http://www.sp4mm3r.com/propellers-adapters/8045-sf-props-2pc-standard-rotation-2-pc-rh-rotation-red.html)
http://www.sp4mm3r.com/propellers-adapters/8045-sf-props-2pc-standard-rotation-2-pc-rh-rotation-red-1.html (http://www.sp4mm3r.com/propellers-adapters/8045-sf-props-2pc-standard-rotation-2-pc-rh-rotation-red-1.html)

Also, ordering radios from international warehouses is a hassle. Batteries at times, but other parts usually come without a problem. Just ordering 4 motors will be no problem at all.

I really want to get the 3300mah battery if possible. I think that its weight is nearly 150gm. By my calculations, if the total weight of the model is below 800gm, then I can get a 3300mah battery.



What are spacer rings?
Do these propellers work with CF 2822? And also, what is the approximate thrust generated (by all the four motors)?


I will order 4 EMAX CF2822 from Rcbazaar. And I am also looking forward to get a 3300mah if the weight is below 800gm.

I just used the Drive Calculator (a program used to calculate thrust, flight time, etc) with the same motor and a 8*4.5 prop. The battery is a 3300mah battery. Here are the results:

8*4.5 need to be spinning fast to provide thrust, bigger props and lower kv motors will be more efficient. Also, with those motors, there will be no point of the 3300mah battery.
Let me give you an example:
With 8*4.5 props and a 2200mah battery, my quad hovers at slightly above half throttle and gives me 5 minutes of flight.
With 10*4.5 props and 2200mah battery, my quad hovers at slightly below half throttle and gives me 8 minutes of flight.
With 10*4.5 props and a 4000mah battery, my quad hovers at above half throttle and gives 10 minutes of flight.

The links for the batteries I used are below:
http://hobbyking.com/hobbyking/store/__8932__Turnigy_2200mAh_3S_20C_Lipo_Pack.html (http://hobbyking.com/hobbyking/store/__8932__Turnigy_2200mAh_3S_20C_Lipo_Pack.html)

http://hobbyking.com/hobbyking/store/__9185__Turnigy_4000mAh_3S_20C_Lipo_Pack.html (http://hobbyking.com/hobbyking/store/__9185__Turnigy_4000mAh_3S_20C_Lipo_Pack.html)

Comparing the prices, the 4000 is 3 times more expensive than the 2200 but gives me only 2 minutes extra.
I'd rather buy 3 2200 batteries in the price of one 4000.

You need bigger motors to be able to lift heavier weight, because these small motors are not very efficient with big props after half throttle.

A friend of mine running these motors: (http://hobbyking.com/hobbyking/store/__25082__NTM_Prop_Drive_28_26_1000KV_235W_short_shaft_version_.html (http://hobbyking.com/hobbyking/store/__25082__NTM_Prop_Drive_28_26_1000KV_235W_short_shaft_version_.html))
with 10*4.5 props gets 15 minutes on the same 4000 battery.

Would the flight times be the same with CF2822, or are you using a different motor, and so the flight times would be completely different. By the way, I have decided to use 8*4.5 propellers with CF2822.

why do you think you need 8*4.5 better get 10*4.5

No, I am running these motors:
http://www.quadkopters.com/product/221213-1000kv-brushless-outrunner-motor-with-mount/ (http://www.quadkopters.com/product/221213-1000kv-brushless-outrunner-motor-with-mount/)

I can't say whether you'll get the same flight times or not, because it varies from motor to motor. Also, props are not very hard to change, so if you don't like 8" or 10" you can always switch them, without much hassle.

The CF2822 will not be very efficient if your quad is heavy and thus flight times will fall. Try to keep your All Up Flying weight within 1kg and these motors should be fine. As I have already stated before, a bigger battery doesn't always mean better flight times, because a bigger battery also means more weight, so take care of that. If you can keep the All-Up-Weight with a 3300mah below 1kg, then you should get about 10 minutes flight time.

The bigger the props, usually, the more stable your quad will be. You will have to experiment with props to find out which are the most efficient on your motor and battery setup and suit your flying style the best.
The most common sizes of props are 8x4.5, 9x4.5 and 10x4.5.

I would still suggest going with 9" or 10" rather than 8" props.

Hi
I am Shubham from 2nd year Mechanical Engineering
IIT BHU VARANASI
We have AeroModelling Club at IIT BHU who have experts in these field.
Since u live in Varanasi, if u need any help, u can contact us.