vibration

The first shaft is bolted to the trans, the slip yoke which is attached to the 2nd by the joint is really part of the 1st shaft and it must have the slip yoke in the same phase as the weld yoke of that shaft, and it has to be on the same way it was originally balanced together or it will be out of balance.

When you look at the weld yoke where the joint is pressed into, that ear of the weld yoke and that ear of the slip yoke where the joint is pressed in must be on the same LEVEL plane, not 1 tooth or more off, they must be perfectly in line with eachother or it will make vibes under or off load.

In this pic the end of the shaft is the weld yoke holding the joint and it is in the same plane as the other end if this was a 2pc design the slip yoke would be at the other end and it would be at the same plane.

I'll post a pic of a 2pc later i'll have one eventually today

. http://i679.photobucket.com/albums/vv152/supershafts/Supershaft-1.jpg