daveopam

My Feedback: (9)

I have a 50CC Extra 300 on the table. There is some confusion with the ball link on the servo arm. One pic shows the ball on top of the servo arm, another shows it below the servo arm. Is ther a right way? Or is either way OK?

Thanks, david

tail strike

My Feedback: (1)

I usualy put the ball on top of the servo arm.
If on the bottom it may hit the servo case at maximum tarvel

smarks

It is better to have the ball on the bottom of the arm if you can make it work without hitting anything. There is more torsional stress on the arm and servo spline when on the top.

daveopam

My Feedback: (9)

Thanks for the responses guys. I am still hoping someone from AW can shed a little light on this. There must be some reason they chose to show the ball below the arm on most of the pics. Unless it was just the preference of the builder???? I have not set the throws. I will watch for interference at full deflection.

david

Mark Dennis

My Feedback: (4)

David,

We place the ball links on the bottom of the servo arm to keep it straight at full deflection. This transfers the most torque to the surface when it is needed most. Using a 1 1/4" arm should keep the ball link from hitting the case.

Mark

daveopam

My Feedback: (9)

Thanks Mark. BTW, this is my 1st AW plane. It is hands down the finest quality ARF I have ever had my hands on.

David