I'm kind of surprised that no one has posted any carnage stories with or without pics that might have been the result of using the wrong pinion angle method. Likewise nobody has reported any anecdotal evidence of E.T. or mph improvements after correcting their pinion angle. Is it possible that either method will get you close enough to not make a significant difference?
"If it is wrong but it works then it is not wrong"
Incorrect angle will usually cause a vibration before it becomes a breakage issue. The opinion of what is normal vibrations in a race car varies greatly.
As to the anecdotes - while there has been a few - I showed my hand with "mechanical logic" on why pinion angle doesn't effect traction. While I hear "anecdotes" that it can, NOBODY has ever come forward that can explain exactly how it works. I'll take mechanical logic over anecdotes any day - others can form their OPINIONS as they wish.
