Thread: Driveline Angle

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Dave and TooFast,
I would make a guess that in either of the applications cited you would never even realize that there is a driveline harmonic Launching for a 1/4 mile pass and banging gears, or tearing around the dirt oval with angles going everywhere are about as far away from a steady state cruise down the interstate as one can get, and I believe that is where the harmonic vibrations come into play. Sure, I want the thing to hook up on an occasional launch, but I'm much more concerned with a smooth ride on the street and highway, plus long term reliability - changing u-joints in the AutoZone parking lot on a car sitting 4 or 5 inches off the ground, chasing a driveline shake is not a good trip highlight! Your racing applications point out that the setup is not going to break u-joints, and I agree 100%. This is a street/cruise question to me, and one where the high speed NASCAR experience on asphalt may provide some insights, but drags and dirt tracking are probably not really relevant. Just my opinion, and I may be wrong. Thanks for the input, anyway. Everything goes into the decision hopper.

Originally Posted by rspears

Dave and TooFast,
I would make a guess that in either of the applications cited you would never even realize that there is a driveline harmonic Launching for a 1/4 mile pass and banging gears, or tearing around the dirt oval with angles going everywhere are about as far away from a steady state cruise down the interstate as one can get, and I believe that is where the harmonic vibrations come into play. Sure, I want the thing to hook up on an occasional launch, but I'm much more concerned with a smooth ride on the street and highway, plus long term reliability - changing u-joints in the AutoZone parking lot on a car sitting 4 or 5 inches off the ground, chasing a driveline shake is not a good trip highlight! Your racing applications point out that the setup is not going to break u-joints, and I agree 100%. This is a street/cruise question to me, and one where the high speed NASCAR experience on asphalt may provide some insights, but drags and dirt tracking are probably not really relevant. Just my opinion, and I may be wrong. Thanks for the input, anyway. Everything goes into the decision hopper.

Guess i just have to run it wide open all the time if i am off a degree... Thats more fun anyways.