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« on: March 27, 2014, 12:21:15 AM »
rastsaurabh
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After putting 3 lookalikes here is my own design 40 Inch WS glider planned for 3 CH.

Hot wired wings in HD thermacol.

Aim is to have max flying with min power system.
IMAG1411[1].jpg
40Inch Own Design Glider for 5th Year Sweepstakes
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« Reply #1 on: March 27, 2014, 09:29:13 AM »
docnayeem
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Re:
Great build ... Hats off ....
 By the way what density foam are you using ?
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« Reply #2 on: March 27, 2014, 10:22:35 AM »
rastsaurabh
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24 density.... but still it needs spar and reinforcements of paper and fevicol.
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« Reply #3 on: March 27, 2014, 10:35:40 AM »
Nithinraj Kotian
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wowwwwwww  Drool superb Saurabh sir  Clap looks like factory made.  Thumbs Up
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« Reply #4 on: March 27, 2014, 03:09:54 PM »
ashJR7202
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Hey Saurabh thats awesome cut!!!!
how u manage to cut tips.
planning to cover wing with paper???
this build is very quick and handy!!!!!
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« Reply #5 on: March 27, 2014, 03:14:52 PM »
rastsaurabh
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Hot wire.... cut.....
I Plan to cover with paper and fevicol.... but off late feeling this is very tedious process and long... moreover lot of precaution is required to keep the wings under pressure so that they do not Warp...

looking for substitute.... tried the lamination film on thermacole but the heat for that is higher than thermacol limit so thermacol gets blisters...!!! 

anyway search is on....!!!
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« Reply #6 on: March 27, 2014, 04:43:04 PM »
SideWinder
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How about wrapping it with paper/tissue without sticking it, and then using lamination film. It should take off some heat off the thermacol. Maybe cooling the wings/parts in fridge before laminating, I know it sounds funny, but worth a try since you are already on it.
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« Reply #7 on: March 27, 2014, 04:48:31 PM »
atulrajguru9
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Superb Cut!
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« Reply #8 on: March 27, 2014, 05:07:26 PM »
rastsaurabh
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SideWinder - thermacol supposed to be the best insulator ..... in old days people used to keep ice in it for long hours  Grin.

still thanks for the tip.
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« Reply #9 on: March 27, 2014, 05:25:00 PM »
docnayeem
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Re:
Try pro-coat or ultrakote ... I have coated a biofoam funjet with pro-coat   it works well
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« Reply #10 on: March 27, 2014, 06:02:38 PM »
ashJR7202
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saurabh, what I meant was regarding wing tips, we generally stick 2 template at both ends, and run hotwire over it. and mostly keep both template parallel. So both the edges are parallel, at center and tips.
But in ur case, tips is not parallel to center but still u managed to get perfect circular tip, how u did that
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« Reply #11 on: March 27, 2014, 08:25:54 PM »
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« Reply #12 on: March 27, 2014, 08:38:32 PM »
topalle
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Great cutting ... absolutely awesome
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« Reply #13 on: March 27, 2014, 10:36:39 PM »
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Quote from: rastsaurabh on March 27, 2014, 05:07:26 PM
SideWinder - thermacol supposed to be the best insulator ..... in old days people used to keep ice in it for long hours  Grin.

I completely missed that point. And trust me its not outdated, still used in present times. Used it on Holi recently.
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« Reply #14 on: March 27, 2014, 11:56:02 PM »
rastsaurabh
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Ash - when you want a parallel wing you put template at both ends ..... but i use one template and hook one end of wire at a point and move other end on the template.....
see this video you will understand.

http://www.rcindia.org/for-sale/wing-core-made-of-high-density-thermacol/msg154985/#msg154985

VC - this one i made from the scrap thermacole left over after cutting the main planes... funjet and 40" trainer... and this is getting more comments!!!!
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« Reply #15 on: March 28, 2014, 12:10:50 AM »
sundaram
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@ Saurabh Have you tired Packing tape for wrapping HD thermocole Its a good combination. Its shrinks well with sealing iron. Only care required is to shrink in multiple passed all directions with medium heat checking repeatedly to prevent warping or bending.

By the way superb cut.  Clap Clap  Thumbs Up
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« Reply #16 on: March 28, 2014, 12:21:06 AM »
rastsaurabh
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after paper stick i do tape them....and iron them.... but Paper with fevicol is a must as i experience...
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« Reply #17 on: March 28, 2014, 12:27:20 AM »
sundaram
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with added paper and fevicol wrapping, yes the warping is prevented to a great extent but at the loss of added weight.

The packing tape wrapped HD Foam heat shrunk has a good strength with huge weight advantage.

I used to try deliberate warping for better wing design like polyhedral tips.
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« Reply #18 on: March 28, 2014, 12:39:46 AM »
K K Iyer
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Never had warping in thermocole.
Why should it?
Doesn't absorb water.
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« Reply #19 on: March 28, 2014, 09:34:02 AM »
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Re:
@K K Iyer ... Yes it does warp ... Though it down not absorb water what happens is when u apply fecoicol and paper on one side .... And as it dries it shrines causing a bend towards the applied side .... To avoid this its should either be kept under pressure or both surfaces should be applied simultaneously.. And left to dry
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« Reply #20 on: March 28, 2014, 02:52:39 PM »
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One more good option is using good gsm paper and stick to thermacol, with putting some weights above , so that it does not loses its shape while drying.
 Here is a good video if it.
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« Reply #21 on: March 28, 2014, 04:24:01 PM »
ashJR7202
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What is that paper he used for covering, is it gsm paper? Whr is generally available
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« Reply #22 on: March 28, 2014, 05:03:03 PM »
rastsaurabh
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I had seen this earlier ... but couldn't find this paper anywhere...
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