Hi guys

Can you help.

I am trying to operate the ailerons and elevator halves with hidden push rods.

It will be in a 1/4 scale jet so I have enough thickness in the section for the servos, but it is the slop free actuation that worries me.

any ideas or web sites would be appreciated. The full size has very small, less than ideal options for external actuation, hence my attempt to drive the surfaces internally

Thanks Ian

ps the wing and tail are foam veneer