sstearns2(at)yahoo.com
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 Posted: Sat Aug 11, 2012 11:07 pm Post subject: Elevator bob weight |
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Hello all,
During my flight out to Oshkosh I noticed that whenever I was in turbulence the stick would seem to move to amplify the turbulence in pitch. If I hit an "up" bump I could feel the stick move back and amplify the bump and the same for a "down" bump.
I think this is due to the factory control system having a negative bob weight effect because of the weight of the control tubes. I added the bob weight shown in the picture and in seems to have smoothed out the pitch response to turbulence quite a bit. I still need to fly with it more, but it seems to be a significant improvement. It added a small amount of "stick force per G" at higher speeds, but is not noticable at low speed or landing. It has about 0.8 lbs on it right now and I am going to make a longer arm and maybe go to 1 lb.
Also you can see that I significantly reduced the gear ratio of the control tubes during construction. The forward bolt for the bob wieght arm is in the hole that was the factory control tube attach hole.
Scott
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