#### Understanding the mechanics of the golf swing: Club face ...

Sep 30, 2019· If my driveshaft is about 44" long, then there is an inverse ratio of the respective lengths to the angle change. In this case, for every 4° of pinion change, there is 1° of driveshaft change. In other words, if you need a 5° angle change, move the pinion up 4° and this will drop the driveshaft angle 1°.