Here is a question for you l-39 builders who have installed your flap horns..

When I mounted my flap servo on the cut out rib just inside the wing root, there was a nice cut out for the servo. I then cut a slot on the bottom of the wing for the servo arm.

As I am about to glue the horn in the flap I measured a direct line from the servo arm to where the flap horn would sit, only to find that the angle that is produced by screwing the servo to the servo rib produces an almost 10 degree intercept point with the hinge line.. So the rib was not glued in perpendicular to the hinge line. Hope I am making myself clear on this one.

Has anyone else noticed this problem? I guess I could build an angle into the way the servo mounts, or I could just live with the angle and hope there is very little binding as a result of not being perpendicular to the hinge line.

Has anyone noticed this in your build? and what did you do to fix the problem?


Thanks
Stan