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Old Oct 27, 2015, 06:07 PM
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Depron/balsa

Been looking at the foam (Depron) models in the foamy section. I am a seasoned balsa and ply ic man testing the water of electrics. Building light has always been the way to go, but I was wondering if I built a balsa model to keep it in the same wing loading parameters, I would have to increase the wing area. Is it possible to do the maths that would give me the wing area for a similar wing loading ie working backwards using wing loading equazion.Cheers ps or would I have to use the TLR method LoL
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Old Oct 27, 2015, 07:51 PM
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What model. s. do you have in mind?

Nutball type, O-Fungle





40incho fungle (5 min 40 sec)
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Old Oct 27, 2015, 08:24 PM
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No need to change the wing area.
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Old Oct 27, 2015, 08:46 PM
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killed another thread
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No need to change the wing area.
Ditto
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Old Oct 27, 2015, 10:07 PM
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Foam is Light, Cheap and Easy. Disposable too.
Assemble, Fly, Crash .. Build another and another
Not Rokit Science
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Old Oct 28, 2015, 10:07 AM
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I agree with all you say regarding foam, but i like balsa. That O Fungle is the bizz. where do I get all the details please. Cheers got to build it
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Old Oct 28, 2015, 10:16 AM
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Originally Posted by Fly Boy3 View Post
I agree with all you say regarding foam, but i like balsa. That O Fungle is the bizz. where do I get all the details please. Cheers got to build it
I am the O-Fungle builder, designer, keeper of the hole.

I will get the plans together for you.

32O Fungle (1 min 20 sec)
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Old Oct 29, 2015, 11:36 AM
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O fungle

Cheers B, how do I locate the thread on the builds etc. Thanks ps I do like the new big one too LoL
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Last edited by Fly Boy3; Oct 29, 2015 at 11:38 AM. Reason: spelling
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Old Oct 29, 2015, 12:05 PM
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Cheers B, how do I locate the thread on the builds etc. Thanks ps I do like the new big one too LoL
http://www.rcgroups.com/forums/showthread.php?t=2519245

I have the plans done and will get them scanned today and post them
later in the day. Going flying as well, so you will just have to wait a bit!

The 32" build thread is trashed, Imageshack lost several pages of my picture, all
the one for that thread. It is basically the same without ailerons.
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Old Oct 29, 2015, 07:05 PM
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For the 20", just do the math to get the size you want. all proportions. remain
the same.
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Old Oct 30, 2015, 12:28 PM
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Cheers B. thanks a lot for your plans and info. After I get my wood may have some questions to ask Would that be ok ? Cheers
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Old Oct 30, 2015, 01:57 PM
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Anything I can do to help, just let me know.
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Old Nov 04, 2015, 03:24 AM
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Quote:
Originally Posted by Fly Boy3 View Post
Been looking at the foam (Depron) models in the foamy section. I am a seasoned balsa and ply ic man testing the water of electrics. Building light has always been the way to go, but I was wondering if I built a balsa model to keep it in the same wing loading parameters, I would have to increase the wing area. Is it possible to do the maths that would give me the wing area for a similar wing loading ie working backwards using wing loading equazion.Cheers ps or would I have to use the TLR method LoL
I've gone both ways .... built a 'wood' model in foam ... example Pilot QB10 ... and built foam model in wood or partial wood.

Any changes ? Only those to modify to electric use in way of hatches etc.
Formers are moved maybe to allow different set-up ... slab foam sides instead of stringered wood ...
Strip wood instead of foam sheet ...

Foam sheet in fact is a great repair tool on wood models. Allows easy fix of crushed ribs .. formers ... doubling up and securing shape.

My Extra 300 fuel powered job .. wing section crushed was put back without even removing factory covering. Foam sections of ribs were cut ... pushed onto a BBQ sticks pointed end ... glue applied and then carefully inserted into wing and put in place.







No weight repairs ... easy to shape and do.

Fuselage rebuilt, wing done .. cowl to finish ... but basically all back to flight ..



Nigel
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Old Nov 13, 2015, 08:22 AM
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Dream it...Build it...Fly it!
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I have found that some of my strongest and lightest planes are a composite of balsa and foam. Each has advantages that complement each other.
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