Pulley

Micro Magic Pulley (kit) Mk. II
The purpose of the pulley bracket is to change the angle of the thread linkage, e.g. for actuating the ailerons of monoplanes or biplanes using a single aileron servo, or to divert the linkage away from the propeller in the case of models. Thread tensioner for tautening thread linkages quickly and easily.with mid-mounted motors.