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Old 03-24-2008, 03:10 PM   #4 (permalink)
RCFanatic12
Flyin' Around
 
Join Date: Mar 2008
Posts: 24
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Default Re: H9 Extra 260 crashed after violent, uncontrollable tailspin.....

Quote: Originally Posted by krayzc
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how did the plane fly inverted with those servo changes?
When I changed the aileron servos, it flew exactly the same as it did before. When I changed the elevator servos to the DS8411's (thinking that the DS821's weren't enough torque), inverted flight definitely wasn't as smooth as prior, but the plane was still controllable. The added tail weight of the 8411's must have offset the balance of the plane and finally caused it to bury itself in the ground in the tailspin. I did a quick finger balance check before takeoff and the plane balanced out pretty good, but I clearly needed to take the time to measure from the manufacturer's CG.
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