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08-27-2009, 01:05 AM
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#1 |
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Doo It! Doo It!
 
Join Date: Jun 2009
Location: aus
Posts: 95
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Just Wondering
Hi just a stupid question. Why when ever i see a plane that has been turned off on the ground are the airelons and elevators are in the fully down position????????? I know this a pointless question but it's been racking my brain as my planes dont do it
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08-27-2009, 01:07 AM
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#2 |
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Team Aerotech R/C Models
 
Join Date: Oct 2007
Location: clinton, ia. usa
Age: 37
Posts: 5,149
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Re: Just Wondering
gravity
__________________
www.AEROTECHRCMODELS.com  Nothing flies like a HyperLITE!!! Special thanks to: Team HITEC Cactus Aviation |
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08-27-2009, 01:21 AM
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#3 |
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If you can't HUCK it BLING IT!
Join Date: Jan 2006
Location: Just Moved.......Hampton VA
Age: 37
Posts: 9,269
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Re: Just Wondering
Exactly. Without power the weight of the surfaces force the servos down.
__________________
Offical Member of Team Caribou Lou "Some people spend an entire lifetime wondering if they made a difference in the world. But the U.S. ARMED FORCES don't have that problem." ...Ronald Reagan |
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08-27-2009, 01:23 AM
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#4 |
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Official DA Fanboy
Join Date: Mar 2007
Location: Hillsboro,Oregon
Posts: 1,224
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Re: Just Wondering
Modern digital servos often do not have alot of "drag" in the system when turned off so the weight of the control surface often overpowers this low residual drag and causes the surfaces to droop. On really large models, you will also see the elevators droop also.
CB
__________________
"Portland......where young people go to retire" "Dont hand me a cat turd and tell me it's Almond Roca!" |
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08-27-2009, 02:17 AM
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#5 |
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Fly Extreme!
Join Date: Jul 2007
Location: High Prairie, Washington
Posts: 3,259
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Re: Just Wondering
Yup. CB described it very acurately.
__________________
Daniel Holman - Team Horizon Hobby - Team Extreme Flight RC - Fromeco Scale Avionics - Vess Propellers - B&E Graphics - DW Foamies May God bless you all!  |
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08-27-2009, 04:35 AM
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#6 |
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Bad-ass Super Contributer!
Join Date: Jan 2006
Location: Tucson
Age: 36
Posts: 5,229
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Re: Just Wondering
The mechanical setup is also a factor. If you have your plane set up for precision only with shorter servo arms than control horns the control surfaces will be less likely to droop. The opposite is true for planes set up for 3D.
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Gmoney and Smarks are spooners |
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