Years ago, when I was doing ICE engine swaps, as a "hot rodding" hobby, I
had to have drive shafts custom fabricated. The company that was building
the shafts warned me to be careful NOT to have the centerline from the
transmission output shaft line up perfectly straight with the centerline of
the differential input coupler. In other words, it should NOT be a zero
angle, straight line, from the transmission to the differential. The reason
stated was that the driveshaft U-joints REQUIRE a slight angle to prevent
whipping/wobbling. It was suggested that a 5-10 degree angle at BOTH ends of
the driveshaft would prevent the problem. (The centerlines of both the
transmission output and differential input would be parallel, but not
centered on each other.)
Check for yourself: Go look under any rear-wheel drive car and you'll see
what I'm talking about: There is a slight angle at both U-joints. I'm no
engineer, so this advise is offered with a "Caveat Emptor" warning.
Roger Daisley
Pullman, WA
www.96-volt.com
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had to have drive shafts custom fabricated. The company that was building
the shafts warned me to be careful NOT to have the centerline from the
transmission output shaft line up perfectly straight with the centerline of
the differential input coupler. In other words, it should NOT be a zero
angle, straight line, from the transmission to the differential. The reason
stated was that the driveshaft U-joints REQUIRE a slight angle to prevent
whipping/wobbling. It was suggested that a 5-10 degree angle at BOTH ends of
the driveshaft would prevent the problem. (The centerlines of both the
transmission output and differential input would be parallel, but not
centered on each other.)
Check for yourself: Go look under any rear-wheel drive car and you'll see
what I'm talking about: There is a slight angle at both U-joints. I'm no
engineer, so this advise is offered with a "Caveat Emptor" warning.
Roger Daisley
Pullman, WA
www.96-volt.com
_______________________________________________
For subscription options, see
http://lists.sjsu.edu/mailman/listinfo/ev