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Nov 03, 2012, 11:53 PM
Registered User
Question

3 ch foam plane rolls hard when turning


Hi iv just built this foam plane from dollar tree foam its a 3ch with a 40'' span and the fuse is 27''

Im having a prob with it wanting to roll pretty hard and nose down when i turn is this a lack of dihedral or something else any help would help
Thanks
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Nov 04, 2012, 01:33 AM
Zen in the art of foam
djacob7's Avatar
Yes, I also think it's a lack of dihedral. You'd get a better explanation from the gurus on the science forum
https://www.rcgroups.com/modeling-sc...?sort=dateline
Nov 04, 2012, 01:09 AM
Registered User
Thanks
Nov 04, 2012, 02:01 AM
Registered User
micka80ella's Avatar
You want it to roll dont you? Or is it a uncontrollable roll? No dihedral and it would just spin in turns. The dihedral helps the plane to bank so it sorta simulates an aileron turn. Is this beyond a slight banking?
Last edited by micka80ella; Nov 04, 2012 at 02:27 AM.
Nov 04, 2012, 09:44 AM
Registered User
I put a lil more dihedral in the wing last night and flew it again it seemed to help for the most part but it still seems to fly a little bit weird ill take a vid. to show what im talking about
Nov 04, 2012, 09:59 AM
RC Adddict
Wilfor's Avatar
Looks to have a short nose and long tail , where is the COG?
Nov 04, 2012, 01:04 PM
Registered User
its 2.75" from the front of the wing my wing is 8" wide
is that about rite
Nov 04, 2012, 04:14 PM
Build straight - Fly twisty
Whiskers's Avatar
That v-stab is way too small. give it about twice the area and you'll be good to go.
Nov 04, 2012, 04:23 PM
Registered User
are you talking about the rudder area or the whole tail end im new to this stuff sry
Nov 04, 2012, 06:04 PM
RC Adddict
Wilfor's Avatar
v-stab stands for Vertical stabilizer which the rudder is part of . Anyone else think 2.75 might be a little to far back ? did you use a calculator ?

http://adamone.rchomepage.com/cg_calc.htm
Nov 04, 2012, 07:35 PM
Build straight - Fly twisty
Whiskers's Avatar
Give it something like this:


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