CV Driveshaft

[TheJDMan]

My 9" center section was a surplus NASCAR unit purchased from Roush Racing. It is equipped with a billet steel pinion yoke so I'm reasonably certain it is running true. I have tried reindexing my DS 180 deg in the pinion yoke but that had no effect on the vibration. The main issue I have is that my front u-joint has a working angle of 4 deg and I have no further adjustment available to decrease that angle.



I called the Drive Shaft Shop this afternoon to visit with them about ordering a CV shaft. The guy I spoke with was apparently not their drive shaft expert and he simply took my contact info and said he would have someone call me back. I hope to hear from them soon.

[andrewb70]

My 9" center section was a surplus NASCAR unit purchased from Roush Racing. It is equipped with a billet steel pinion yoke so I'm reasonably certain it is running true. I have tried reindexing my DS 180 deg in the pinion yoke but that had no effect on the vibration. The main issue I have is that my front u-joint has a working angle of 4 deg and I have no further adjustment available to decrease that angle.

I called the Drive Shaft Shop this afternoon to visit with them about ordering a CV shaft. The guy I spoke with was apparently not their drive shaft expert and he simply took my contact info and said he would have someone call me back. I hope to hear from them soon.

Steve,

4 degrees is right at the edge of being OK. There is a great chart posted on the Mark Williams website that plots working angle against driveshaft speed. Basically you want working angles of less than 3 degrees...the smaller the better.

When you call the DSS talk to Frank. He is the owner and he knows his stuff. Tell him Andrew sent you. They also have CV pinion yokes now so you can get a true dual CV shaft made, which is what I would do if I had to do mine again.

Andrew