RC India

Any idea what type of Rubber band is used in these type of planes as in the video (and there are so many others in YouTube).

The rubber band I used last just for 5-7 Sec to complete the 100 rotations

https://www.youtube.com/watch?v=_ARraf5Smns (http://www.youtube.com/watch?v=_ARraf5Smns#ws)

That video is expert material.
Perhaps you can look for something called 'Peanut Scale'

Welcome to this forum, and best wishes.

Thanks

The rubber is called Tan Super Sport

PM me your address and I'll send you some

Thanks a lot Saikat-da (calling da as I see many other members are calling you so). It will be a great help. I will pm you my address.

Saikat-da, I got the rubber bands today, absolutely great, can't thank you more, now its on me to make the model and post the Video.

Saikat Da that rubber bands were from local source or external source? Please share if you have no issues.

it is Tan2 rubber - got a pound of assorted widths years ago from FAI model supply who
were the source at that time.

Tan2 is no longer in production and has been replaced by Tan Super Sport.


Still got a lot left and if any one wants (free) pls PM me.

only thing is pls do not expect overnight - as it will take some time.

Saikat Da.  Thanks. Will PM for an odd sample please.

Thanks in advance.

do you guys know where to get tan super sport.

sams models
freeflight supplies
fai model supply


to name a few

Any Indian Supplier.

not as far as I know.


This is a very niche and somewhat unglamorous product.

The Indian aeromodelling market is dominated by multirotors and their ilk...
no hobby shop is going to keep anything which is not going to sell.

Even a mega site like HK does not stock.

 

Sad but that seems to be the story  :(

Ok Guys, I got the Glue gun this weekend and finished making it. This is made from Styrofoam plates and the rubber band I got from Saikat-da...., I think I did some 100 turns and it can go up to 200 easily. From the test fly...I think the plane is not going up. Anything that can be done? should I put the wings little higher in the front part? Please give your feedback. Thanks-
https://www.youtube.com/watch?v=GBsVIDhiFd8&list=UUDe1clc29HvqO-SLb4iebLw (https://www.youtube.com/watch?v=GBsVIDhiFd8&list=UUDe1clc29HvqO-SLb4iebLw)

@arindamt,
No. Model seems ok. For the present don't change anything except:

Add a little down thrust and increase the number of turns.
As you wind the rubber, first it will get twisted. After some more turns, you'll see something like knots forming, which is actually a second layer of twists. You should be able to safely wind till the second twists cover the entire length of the rubber. Increase winds gradually in successive flights till you reach that stage.

Post a video with more winding!

Thanks a lot KK....how do I add more "down" thrust?

Half expected that question  ;D
Remove prop holder.
Sand a slight taper (~2degrees) in the top half inch or so of the fuselage.
Stick thin balsa shim to the bottom half inch or so of the fuselage (sharp end facing towards rear).
The idea is to make the prop shaft point slightly down.

As power is increased, it will have a tendency to nose up. Down thrust will compensate.

Your model is slightly tail heavy. Add a small blop of plasticine (smaller than a pea) to the nose. This will correct the wavy flight path.

Awesome...I am totally novice, so not aware of all the terms :), but now its clear.....thanks a lot :)

@arindamt
The rubber you are using is not just a rubber band.
Hope you tried out your model today before dark!
If you send a pm to Saikat sir, i'm sure he'll be happy to see your video and advise.
Regards.

Actually I posted the video from office so can't test it before tomorrow again :(
I will post the update soon after following your advise....thanks a lot for coming back again :)

flight was quite good.

as K.K pointed - add downthrust ( the propeller should be pointed slightly downwards
when the plane is level) and maybe a small amount of weight in front.

The Suggestions worked like a charm, it's now more stable and goes really high. I will upload the Video soon.

Here is the Video.....Thanks a lot Saikat-da and KK sir- https://www.youtube.com/watch?v=YH-vbcz50mg (https://www.youtube.com/watch?v=YH-vbcz50mg)

@arindamt,
Well done  {:)}
Now look up on the net 'Peanut Scale'
You will be inspired!

well done - also  google "stretch winding rubber power plane"- you can easily put about 600 turns without
stressing. as you add more turns you will need to increase downthrust

You are getting too much power for too short duration.
Reduce thickness of rubber if you can, and increase length.
Reduce right rudder a bit, add right thrust instead, and find a larger field.
Remember Saikat sir's advice about 'stretch winding'

If you are under 18, and manage a 1 minute flight, i'll give you a Rs 1000 gift voucher as a prize.
I'm sure Saikat sir will be happy to reimburse me 50%!

Build another with less sharp camber in the wing, and will with better/more accurate finish.
Best of luck.

@saikat sir,
Poor me, the owner of only one single rubber band!

Could use some for the Magic too (360gms with 4 servos and giant wheels!, excl Rx, Esc, motor, prop)

Edit:
Tried twice, but first pic still upside down :headscratch:

Thanks Saikat-Da and KK sir. 'Peanut Scale' surely inspired me lot. I will also try to build a winding tool to do a  'stretch winding' and make a new one with less sharp camber. 1 Min looks too much to me for now but definitely I will try my level best. But I am already more than 18 :)

No prob KK - pm your address pls. forgot.

will send for all who requested by tomorrow.

ps : will all those who requested give your full name and contact
number pls. courier is refusing without these details

here are two of my few last remaining rubber power planes

first is a traditional model - balsa / japanese tissue and balsa prop ... can manage
about a minute in still air (18" span)

the second one is of foam wings and tail having a prop cut from a soft drink bottle

flies indoors and outside in calm weather

Hi, I am a beginner. I would like to try Tan rubber band for my plane; Can  anyone help please? Saikat? Iyer sir? Arindamt?

@SI74,
Saikat sir is the only known source!
Tell him you are trying for the first 1 minute flight...

Thank you sir, Saikat pmed me that he will help. Great forum. Thank you all for the enthusiasm to support a beginner like me!  :thanks:

Do these planes rise from ground and fly?

You can purchase Eagle balsa Glider from our website.  ;D  :) http://www.edallhobby.com/en/gliders/827-eagle-jet-glider.html

For those with limited resources, I may suggest my ideas. Fuselage=wooden Nonstick spoon cut into half. Propeller= same wood sanded to thin sheet glued to refill and shaft made of steel safety pin cut and bend to shape.Wings made of polystyrene plate attached together by sellotape.Wheels made of caps from vials used in hospitals attached to thin metal wires. And waiting for Saikat's rubberpower....

@si74,
@arindamt,
You may find this of interest...
http://www.rcindia.org/kites-trains-free-flight-and-all-others/home-made-prop-for-rubber-power/msg229496/#msg229496

Wow! So it really took off from ground! http://youtu.be/RNWjfjphRUw

Sorry I was away and could not see the replies.
SI74- Nicely built with limited resource. Looks like the flight wants to go outside, please capture a video Outside.
KK Sir - I checked that thread, cant wait to make a prop similar to that myself.

@arindamt ,but this was another plane I made earlier http://youtu.be/ZsXfaNyHP80

@si74,
That is a nice flyer!
Do you still have it?
If so, perhaps you could try these:
1. Increase the fin size about 50%, or add a sub fin below the stab. This will cure the wing rocking (Dutch Roll)
2. Add more turns and/or more rubber if you can.

If you had posted a build log, please post a link. Otherwise post a build log if you have photos.

yes sure sir,I do have it.It is a recent video,Thank you for the diagnosis for its malfunction,I'll surely rectify it.Thanks to arindamt,for this model was inspired by his creation. The propeller was made from handwash bottle, tail piece a straw ;D to reduce weight, the wings lengthened using double side tape.Here are some snaps...

And the centre of the propeller is a T connecter used in aquarium :)

The fuselage is popsicle stick (mango bar :) ) tied together.

nice....I am yet to built my own Prop...I am still using the one from RCBazar...I will try your method

@SI74  :bow:
Very inspiring builds, I am also going to try an  indore  type.

Hi ahmedt, for the takeoff power, I used usual transparent rubber bands one layer mixed with tourniquet ( used by nurses) split into four then one piece tied together.

Hi,

last night Mr KK Iyer mentioned the rubber chord that we have in the sock elastic, ever thought of trying that.  I have also seen the street balloon vendors use it for the Yo Yo balloons.

But the elastic thing( of course not from socks :) ) I tried.But not good enough,as its turns wont last long . Somebody ( Now I cant remember, sorry) in this forum mentioned about tourniquet which is as good as Tan and so I too tried that and found it really good. I am yet to try the original Tan super sports one which I hope Saikat would send me and then I'll write a review after comparing.

Sure, I agree . I have zero experience with rubber model.

Two three things to keep in mind when you make rubber powered planes.1. Keep the centre of gravity a little to the front.2. As you add more and more rubber bands or power, be ready to add weight at nose in the form of paper clips. I found medium size paper clips are perfect.
3. If you use styroform plates as wings, tie a thread( Sellotape strips are perfect) to attach end of wings to fuselage so that when it flies the wings won't bend upwards.

Iyer sir, improving day by day. http://youtu.be/-dgZ9Vh3TY4

@si74,
What a lovely flight! Wonderful  {:)}

Thank you sir for the appreciation.I too enjoy the smooth flight.

Modified micro RC- piper J3 cub.

Best and cheap model to get trained in RC flying.Got for 2.1K from eBay.Modified to a perfect glider from my experience with rubber powered models😊. Rises from ground or flies from hand even at very low altitude.

This happens when your rubber powered plane is too good  :giggle: which flies high 8-) ; too high :help: and it happens on a windy afternoon  :headscratch: I was lucky to get it down with minor scratches only ;D http://youtu.be/rRLtl5xHEDM

And this happened afterwords :) 450 turns only.Best build so far. I'll post close up pics. http://youtu.be/lYYOghSNwAQ

Build log:
1.First cut a Balsa wood (12*6 cm) fuselage 43 cm long.

2.Plastic prop 7"( bought from RC Bazaar) through a refill fixed with safety pin at a downward angle and hot glued.

3.Then made wing reinforcement with thin Balsa strip (4mm wide 27cm long) in a double V shape, fixed to another thin 4mm wide 10 cm long balsa strip at the centre ( bend to aero foil shape)

4.Attached 60 cm long 10 cm wide styrofoam wings with 10 cm sub fins on each end to the upper V.(hot glued a balsa rib at the centre of the wing)

5.Finally connected the wings to fuselage using a light weight packing foam shaped to attach the centre Balsa wood piece.

6.The stabiliser and rudder is attached at the rear end on a  4mm wide balsa wood strip 12 cm long.

7.Rubber power is 2mm wide tourniquet stripped - 48 cm long; mixed with six 4" rubber bands.

And the build time ....  ???  2 hrs y'day night after office hrs  ;D  8-)

Si74,
Not trying for 1 minute?
Already doing 20-25 seconds.
You can easily do 1 min!
Regards

Yes sir, my next plans. 1. 1' flying 2. Proper rise from ground and fly.

SI74, appreciate the trimming skills. Not many know how to do that these days. And beautiful house as well

Saikat, that rubber model of yours is that from the Aeromodeller plan? Victoria/Victorian something? The bamboo and piano wire legs look very familiar.

SI74, tip for you to win that 1000 voucher. Learn to read thermals/updrafts and these would help you break the 1 minute mark, but be careful, too strong and it would take away your pride and joy.   

Are you still using Castor to lube your rubber motor? Switch over to silicone, that will not degrade your motor like other oils do.   

Very well trimmed. Beautiful flier  :thumbsup: {:)} {:)}

you got it - aeromodeller plan "Victoria parker " by Vic Smeed

Yes Victoria Parker it is  :thumbsup: Still might have the APS plan stashed some where

Thank you@ flyingboxcar for the advice and Sanjay sir for appreciating my efforts.🙏

Checked back to see if i was hijacking si74's thread.
Turns out it was started by arindamt! Who also successfully flew a rubber powered model.

Since some veterans (who know stuff like the Tomboy was designed by Vic Smeed etc, and much more besides) have joined this thread, perhaps an oldie can enter.

Tomorrow i will search for old mags and plans left over after burning the termite infested ones...

Looking for (old) plans for (presumably young) guys like si74 and arindamt. And kiran rc and jana.f22.

Hope to find a few over 50 years old.
Attached is a pic of a Sep 1953 issue of a mag, a sample of the places i'll look in...
And a pic of a 74 year old design i built last month (though with glassed depron wing and CF fuselage)
And a pic of a token gift for the first member to identify the design.

Here are pics 2 & 3

New experiment  ;D Attach electric paper airplane kit to my styrofoam plane!  :giggle: And it works!!! ;D

@si74,
You mean that gesture controlled one?
Wow. Well done indeed!

And this is the benefit of self made rubber powered planes. You may use your knowledge to modify a cheap mini RC plane for a controlled flight; rather than to spend money on sim.( for those who are reluctant ) http://youtu.be/vpii5QYW_p8

An excellent PIONEERING effort.  {:)}
What was that right spiral dive at the end???

 :P Turned the plane too fast when I saw it fly away  :giggle: :headscratch: :banghead:  ;D

Bought a sky surfer from rcbazar.But when I launched, it was nose diving to right all the time. So what I did is applied a bit of hot glue to the fuselage tip so that the prop is slightly oriented to left; and that did the trick! Now it's flying perfectly. ;)

Another perfectly flying model built, this time I glued a balsa wood piece @ front end and then drilled a hole at a downward angle using pcb drill.

doc this is a simple device used for stripping rubber down to your required
width. try and build one and use it instead of doing it by hand.

pls ask if you need more details

Yes, this is the one I was thinking of making all these days... How is it made and how to cut perfectly? Please give me details. Manually cutting to desired width is a strenuous effort. I checked the fai site, the shipping charge for a 2 dollar product is 42$ !!!! So this device would be ideal for me. Please give me the details.