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Forum: Electric Pattern Aircraft

12-30-2011, 10:46 AM

Replies: 2,031

Contra Rotating Propeller Drive for f3a 2m Pattern Planes

Views: 683,688

Posted By wingster

RE: Contra Rotating Propeller Drive for f3a 2m Pattern Planes

I didn't mean the plane get bent, just that it experiences a torque which results in a change in pitch or yaw. Fairly small though, since the lever arm between the two props is small.

Forum: Electric Pattern Aircraft

12-30-2011, 07:39 AM

Replies: 2,031

Contra Rotating Propeller Drive for f3a 2m Pattern Planes

Views: 683,688

Posted By wingster

RE: Contra Rotating Propeller Drive for f3a 2m Pattern Planes

Brian

'"The shaft displaces proportionally to the side load. That is all there is to it."

Since the two props have a small seperation along the shaft, the two forces would result in a...

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