Quote: That scenario is very correct, and it illustrates why you can not always set pinion angle off the driveshaft.
Under power, you want the front and rear U-joint angles to cancel each other out (pinion parallel to transmission). You do not want both front and rear yokes pointing up or both pointing down.
The purpose with it is to have both u-joints rotating with the same speed. I know this wont make sence to many but my english is not good enough to explain. Maybe someone else can?
