Servo Arm Length

[8181C]

I’m trying to duplicate an existing installation on a cj6. Attached are some pictures of that installation and servos. I’m trying to determine what the arm length of these servos are? Both are bolted on the center whole. Can anyone determine the length (long/ normal) of these servo arms? Thank you
Larry

 

[DBRV10]

That is almost without doubt a long arm. The locking nut is on backwards and is not done up. I hope that is not a flying plane :-o

You want to use a arm / hole that is as close to the servo shaft as possible that will give full throw without going over centre. Never use the outer most or longest distance if you can avoid it.

 

[8181C]

Thank you and yes that was from a flyable aircraft, butNot mine. I will forward the message to him. Thank you for the advice.

 

[Raymo]

Slight correction: The jam nut is not tight.