Senior VR Member
Join Date: Jul 2005
Location: So. Dak. Sioux Falls
Thanked 3,006 Times in 2,194 Posts
It would help to know which measurements do not match up.
Anyway, the critical measurement is from the end of the drive end splines (those being the shorter of the two splined ends) to the shoulder behind the longer of the two splined ends (the other end being the u-joint end), that measurement is CRITICAL.
Measuring from the end of the short spline end to the shoulder, that measurement has to be 15.750 inch.
The overall length of the driveshaft, drive end spline to end of u-joint spline must be 16 15/16 inch.
Cutting and splicing the driveshaft so that the shoulder falls at 15.750 inch from the drive end of the shaft, may render the overall length slightly longer than 16 15/16ths inch.
That extra length is not critical to remove, but as long as it's in the machine shop it's not a bad idea to have them trim 2mm off the u-joint (long spline) end to accomadate the 16 15/16ths overall lenth.
Again the critical measurement after they are all done is from the drive end spline (short spline end) to the shoulder behind the u-joint end (long spline end).
That shoulder must fall at 15.750 inch from the end of the drive end spline.
Hooking a tape on the drive end of the spline that shoulder should fall at 15.750 inches after the two ends are spliced together.
When I want to read a really good Harley thread, I just turn to VolusiaRiders.com