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08-11-2007, 01:20 AM
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#1 |
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Bad-ass Super Contributer!
 Join Date: Jan 2006
Location: USA
Posts: 255
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Trim Question
I have two airplanes (one is a foamy and the other is a 36%) that have the same bad trait.
The planes fly hands-off while right side up. However, when I try to go hands-off while inverted, the planes want to do a slow roll. ***? |
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08-11-2007, 01:23 AM
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#2 |
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Mother Huckin'
Join Date: Jan 2006
Location: Caguas, Puerto Rico
Age: 25
Posts: 4,304
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Re: Trim Question
What radio are you using? Is it 7 channels or under?
__________________
Pilot RC Aztech Aero/Secraft/EG Aircraft B&E Graphics, Jersey Modeler, TailDragger RC |
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08-11-2007, 02:03 AM
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#3 |
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Thread Killer
Join Date: Nov 2006
Location: edmonton,alberta,canada
Posts: 249
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Re: Trim Question
dynamic balance.maybe?...
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08-11-2007, 02:24 AM
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#4 |
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Bad-ass Super Contributer!
Join Date: Jan 2006
Location: USA
Posts: 255
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Re: Trim Question
Vic -- I use a Futaba 14MZ for both planes.
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08-11-2007, 08:57 AM
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Flyin' Around
 
Join Date: Apr 2007
Location: CENTRAL ISLIP, NY
Posts: 12
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Re: Trim Question
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08-11-2007, 01:28 PM
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#6 |
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www.stansphotos.com
Join Date: Jan 2006
Location: Monmouth County New Jersey
Posts: 370
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Re: Trim Question
Storklappe once you have your airplane flying hands off straight and level, roll inverted, if the left wing drops add weight to the right wing and if it drops the right wing add weight to the left wing. Start this off with very little weight on your foamy and you should see a big difference.
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08-11-2007, 02:57 PM
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#7 |
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Bad-ass Super Contributer!
Join Date: Jan 2006
Location: USA
Posts: 255
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Re: Trim Question
I'll try adding a little weight on the foamy's wing and try it as soon as the winddies down.
Why does the heavy wing only cause the "problem" when it is inverted (it flys hands-off right side up)? |
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08-12-2007, 07:33 AM
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#8 |
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end user
Join Date: Jan 2006
Location: neenah,wisconsin
Posts: 363
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Re: Trim Question
you probaly trimmed it to compensate for the weight.
__________________
the man in the mirror isn't who you think he is |
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08-12-2007, 09:58 AM
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#9 |
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Wah wah wee wah!!
Join Date: Mar 2006
Location: Greensboro, NC
Age: 21
Posts: 1,612
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Re: Trim Question
Exactly. You've trimmed the plane to compensate for the lateral imbalance while upright. So if the left wing is heavy, you've added right trim. Roll it inverted, and now the wing on the right side is the heavy one, PLUS there is right aileron trim, effectively doubling the problem. Set the lateral CG right and it'll become a whole new airplane.
RJ
__________________
Futaba Extreme Flight RC Desert Aircraft___Castle Creations Aeromodel/Hacker Brushless___Thunder Power Vess Aero B&E Graphix Higher Plane Productions |
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