The Jalopy Journal
I think access and knowledge are two roadblocks. I grew up in the days of full srvice gas stations. My dad had one. I started sweeping driveways...
This is the best document on drive line angles. http://www.iedls.com/asp/admin/getFile.asp?RID=10&TID=28&FN=PDF I fought mine with a 60-65...
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The Jalopy Journal