Originally Posted by
acerc
It is in my opinion that whatever arms come with the servo, are strong enough to carry the load of that servo. Is a mfg really going to make a 2-3-400 oz-in servo and supply it with arms only strong enough for a 30 oz-in servo? But I will say if I have to go with longer arms then I will go ahead and get the heavy duty or even aluminum.
Servo Extensions (to extend the wire from the servo to the receiver)
not servo output arms (mechanically connecting servo to pushrod)