Here's the technical answer, or where to find it:
http://www.stovebolt.com/techtips/driveline/setup/index.html

If the angle is very small it is phased one way, if larger than it's the other way. I won't try to explain how and why, the answer is in the manuals liked above and explains it better that I can..

Grigg


•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
---All pictures---
"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-