Why Drive Shaft Phasing Is So Important

This is a little cheesy at first but he gets down to brass tacks and shows some pretty interesting aspects of how drive shaft phasing works and why it's necessary. He made a similar device used in another video by Spicer to give an example of how the shaft doesn't turn at a constant RPM (unlike CV joints do), and how shaft vibration is introduced in improperly phased drive shafts.

https://www.youtube.com/watch?v=YgNZfIR-8Ng

 

The Spicer version which is much shorter but the basic idea of how phasing works.

https://www.youtube.com/watch?v=Idk3BVDVHq4

 

Good video