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HelicopterScale Model RC Helicopters › Plywood Question
08-09-2009 01:41 AM  8 years agoPost 1
Devil Dog2

rrNovice

Stafford, Virginia

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when it come to the piece of wood between the MEchanics and the fuse, does that have to be there or can it go without? I have a UH-1B build and am probably the first one to put a Raptor 90 in one, but the fuse fits practically perfect but already meets the hight without the piece of plywood. Please advise.

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08-09-2009 02:13 AM  8 years agoPost 2
Peter Wales

rrElite Veteran

Orlando Fl

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My Ec135 has the mechanics bolted directly to the fiberglass. No need for wood unless you want to raise the height of the mechanics. You actually fly the mechanics and the body hangs on for grim life.

If it is securely fixed, you don't need to add anything else, like pieces of tree. Just be sure the body can hang securely from the mounting points of the mechanics.

Peter Wales
http://scalehelicopters.org

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08-09-2009 02:16 AM  8 years agoPost 3
rjhpilot91

rrApprentice

somers point, nj

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I built my brothers and my MH-68 with swift mechs both without a plywood base. I also built a 222 without a plywood base. They have flown over a hundred flights like that with no problems, however the fiberglass does flex a bit on the bottom like that.

The 90 size long ranger I'm currently building has a piece of plywood epoxied to the base as it seems to give the bottom of the fuselage a lot more rigidity. I'd use the wood if weight isn't a concern. You can use real thin 3mm plywood if height is an issue as well.

Helicopters don't fly, they beat the air into submission!

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08-09-2009 02:21 AM  8 years agoPost 4
Devil Dog2

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Stafford, Virginia

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Plywood Question
I like what I hear so far. I will post pics soon of the progress.

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08-13-2009 06:14 PM  8 years agoPost 5
Richard Morgan

rrApprentice

Virginia Beach, Virginia USA

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Hey Devil Dog2:

Glad to see you working on the Huey. If you don't use any ply on the floor that is fine but, make sure that you do build up some plywood formers to firmly afix the mechanics to the sides and roof of the fuse to prevent any resonance. The glass on that bird is flexible and strong but still can have movement. If resonance occurs you just might end up with a much larger hole in the top of the fuse as your your control system augers out the hole to a larger diameter.

Richard

Richard

Is it just me, I thought all Helicopters flew in 3D......Hmmmm?

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08-13-2009 08:28 PM  8 years agoPost 6
AgentOrange

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Jacksonville, Florida

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im using a plywood base on my Airwolf 50 build

Trying not to put them in the dirt.

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08-14-2009 04:49 AM  8 years agoPost 7
son nguyen

rrApprentice

san jose ca us

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I builded 3 of 60 size Huey already, you need to make 2 pieces of long bar hard wood across the main frames, epoxy them to the 2 formers of the main body and fiber glass on it so it will help to hold the machanic to the fuse stronger, because Huey is the wide body, 2 open doors, 2 sliding doors ( optional) may damage by the vibration, Electric less vibration than the Nitro , the other way is epoxy the fiberglass sheet to the bottom and both side like the Funkey fuselages did.

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HelicopterScale Model RC Helicopters › Plywood Question
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