I think our op had a medical emergency or something. It might have been caused by words like "inertia" applied to driveshaft yoke forward movement..or maybe he fell asleep waiting for an example of me stating that the output shaft doesn't move..or overdosed on frustration trying to fit a lowgear sun shell to his direct drum..I myself am still in awe that anybody would declare that a lowgear set when the front of the sun gear is not visible..