RC India

RC Equipments => Tools, Materials and Building Techniques => Topic started by: topalle on December 06, 2013, 08:48:11 PM



Title: Low density thermocol using it for any model making
Post by: topalle on December 06, 2013, 08:48:11 PM
Can we use low dnsity thermocol normally sold in stationary shops for any serious models?  (:|~
Saw this at many places....
Is this low density thermocol the one used in insulation of homes? ( ceiling?)


Title: Re: Low density thermocol using it for any model making
Post by: rcrcnitesh on December 06, 2013, 09:55:37 PM
Its not worth the hardwork as its very weak.


Title: Re: Low density thermocol using it for any model making
Post by: v2 eagle on December 07, 2013, 12:38:08 AM
You can.
Use fevicol and tissue paper to laminate it. i did my corowing plane under 60gms with the stationary thermocole. joining two pieces with tooth pick.

Ashok.P


Title: Re: Low density thermocol using it for any model making
Post by: topalle on December 07, 2013, 11:00:47 AM
How did you reinforce the wing? Pushed a cf rod into the thermocol or stuck it?


Title: Re: Low density thermocol using it for any model making
Post by: KALYANPRODHAN on December 07, 2013, 11:06:41 PM
I make free flier aeroplane (6"-18" Wingspan) covered with coloured tape and having lead ballast weight that glides very well with a slope of Δy:Δx = 1:35. I will post the build logs in different thread.


Title: Re: Low density thermocol using it for any model making
Post by: VC on December 07, 2013, 11:40:56 PM
"Δy:Δx = 35:1"
???

Αυτό είναι αιματηρή ελληνική. Παρακαλούμε μεταφράζεται σε απλά αγγλικά .........

Try pasting this here:

http://translate.google.com/#auto/en/

 >:D


Title: Re: Low density thermocol using it for any model making
Post by: rohitgupta322 on December 08, 2013, 12:01:54 AM
 :giggle: :giggle:

BTW Kalyan Da, if y is the vertical axis then that is a very bad plane.  :giggle:


Title: Re: Low density thermocol using it for any model making
Post by: VC on December 08, 2013, 12:09:48 AM
'Plane' as in Aeroplane or as in physics?

Plainly asking plain questions - hope you don't mind.


Title: Re: Low density thermocol using it for any model making
Post by: rohitgupta322 on December 08, 2013, 12:15:33 AM
That is Kalyan Da's "free flier plane". Whether it is aeroplane or physics, it is his call.  :giggle:


Title: Re: Low density thermocol using it for any model making
Post by: KALYANPRODHAN on December 08, 2013, 12:18:38 AM
Sorry, mistyped while searching typing code of del.
corrected.

Actually it is the gradient/Slope. Rohit, perhaps you have seen the gliders.
You surely can adjust this to make 1/35 to 35 also by adjusting only the throwing angle. ;D

VC, Sorry to say that you have just brake one rule of using english only, though for fun, but it is...


Title: Re: Low density thermocol using it for any model making
Post by: VC on December 08, 2013, 12:30:27 AM
Brake or Break?  ;D

I need your help and will call you later today. 12 noon ok?

Cheers!


Title: Re: Low density thermocol using it for any model making
Post by: rohitgupta322 on December 08, 2013, 12:37:59 AM

Actually it is the gradient/Slope. Rohit, perhaps you have seen the gliders.
You surely can adjust this to make 1/35 to 35 also by adjusting only the throwing angle. ;D


Changing the CG will also help.  :giggle:


Title: Re: Low density thermocol using it for any model making
Post by: KALYANPRODHAN on December 08, 2013, 02:14:47 PM
Yes, definitely. as shown in your avtar rohit. ;D


Title: Re: Low density thermocol using it for any model making
Post by: essaargee on December 08, 2013, 08:38:27 PM
VC, :) some times those unintended malapropisms make English hilarious reading :giggle:. Trying to correct is ok ;) but let the thing be enjoyed when the going is good :P. What says you? ;D No pun intended.


Title: Re: Low density thermocol using it for any model making
Post by: topalle on December 09, 2013, 08:22:30 PM
What about boats VC sir?


Title: Re: Low density thermocol using it for any model making
Post by: v2 eagle on December 10, 2013, 01:05:28 AM
Mine doesnt needs any reinforcement, if i remember correctly its a 30" plane. just make 3 times lamination and its strong and light.


Title: Re: Low density thermocol using it for any model making
Post by: shobhit17 on December 10, 2013, 04:35:06 PM
well.... I have used the thermocol used for AC insulation for my 6 ft span Glider (Apple Box).  I have reinforced it with 3mm x 6 mm hard foot spars running on top and bottom of the aerofoil.  Do'nt ask me where do you get these hard wood spars.... I cut them myself at the local carpenters shop and had used the heavy machinery packing material wood for the spars.  For the outer panels I have used Balsa spars of same thickness.  OK... I also used a balsa LE and a TE.  I am reinforcing it with Coloured masking tape for the finish.  The Guppy is a 5 ft span glider and I am giving only similar Balsa spars on the inner portions but have left the outer panels without any spars.  Yes have given balsa (home grown) for the TE and the LE.  Will reinforce it also with masking tape.
I have used a 2 inch thick sheet of Thermocol.
You may see my build log for the models... its a bit slow progress but going good.


Title: Re: Low density thermocol using it for any model making
Post by: rastsaurabh on December 10, 2013, 05:35:53 PM
Hello All, this is a 40Inch wing with low density thermacol...
http://www.rcindia.org/electric-planes/scratch-built-piper-lookalike/msg130296/#msg130296

Card paper on leading and trailing edges and a wooden spar in the center.... result is a light sturdy wing.....