How do you figure the centerline of the control horn block offset to the centerline of the servo?
Thanks! It was just evading me a bit on just for sure how it was done.It's sort of builders choice depending on how long your servo arms are and what throws you want. At full deflection you want your pushrod perpendicular to the hinge line or as close as possible. So for IMAC only your horn will be further off center to the servo, for 3D, your horn will be less offset from the servo. I typically start with the center of the servo horn in-line with the edge of the servo box. If you look close at the drawing with a straight edge that is how they are drawn (or pretty close to it) as well. I use 1.5" arms and get about 50* of aileron travel.