Pinion Mass Dampener
Pinion Mass Dampener
(OP)
So I was wondering if pinion mass dampeners that are found on some vehicles are to compensate for the harmonics generated due to pinion angles within a certain range. Am I wrong in thinking if the drivetrain were in perfect alignment for an independent rear suspension vehicle (ie zero angle between transmission tailshaft/driveshaft, and zero pinion angle) one would not need a mass dampener on the pinion?





RE: Pinion Mass Dampener
Cheers
Greg Locock
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RE: Pinion Mass Dampener
RE: Pinion Mass Dampener
And that's just the "source" end of things...
RE: Pinion Mass Dampener
Mike Halloran
Pembroke Pines, FL, USA
RE: Pinion Mass Dampener
I imagine some vibrations are induced by CV joints in the axles if the diff centre is mounted rigidly to the chassis.
Also tyres might set up some reaction as they are never perfectly round with perfect side wall stiffness in all directions.
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RE: Pinion Mass Dampener
RE: Pinion Mass Dampener
Regards
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RE: Pinion Mass Dampener
If the engine, transmission, and differential were not connected rigidly, I would assume that the deflection in engine, transmission, and differential mounts would cause the angle to change slighlty (< 0.5 degrees for arguments sake). This is why I would use universal joints.
RE: Pinion Mass Dampener
The angle does change.
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RE: Pinion Mass Dampener
You can't use a solid bar like most of the rest of the world?
RE: Pinion Mass Dampener
It is about 4' long. The boat flexes a bit (never measured) and the shaft never fails.
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RE: Pinion Mass Dampener
Nor did they fail in the front engine/rear transmission Pontiac Tempests, a few Ferrari models, and the latest few years of powerful Corvettes.