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Old 08-19-2009 | 02:53 PM
  #8  
da Rock
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From: Near Pfafftown NC
Default RE: This Citabria doesn't want to roll!!?!

ORIGINAL: tod0001

Thanks for the advice.
I am not sure how to incorporate the differential. The airelons are built using bell-cranks.....
I am a bit confused because I didn't have this problem with the original plane, which also had bell-cranks, and probally no differential.
It's really quite easy once you get the idea.

You know that ABSOLUTE TRUTH that's one of the first you hear when you get into R/C? .... the one about "the pushrod should make a right angle with the servo arm"!!!! Or "the pushrod should make a right angle with the horn". You ever wonder what happens if your pushrods don't make that right angle?

Differential happens.

There are a number of ways to describe how to rig your servo arm (or horn) so the angle isn't a right angle, but a picture works better. I'll go look for one. In the meantime, Minnesnowta or BMatts will probably drop one in here. BRB