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Originally Posted by PeteA216
Ah, see the term "CV Jount" screwed me up. To me it looks like a setup like that would cause problems in terms of maybe too much flexability... whats the advantage to having a U-joint setup like that instead of the more simple one below?
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The CV stands for 'constant velocity', as you are aware. The regular single U-joint setup can transmit power in 'pulses', where there is a rhythmic, rapid acceleration and then deceleration of the driveshaft. This is worsened by excessive driveline angles. The Cardan joint is supposed to eliminate this by 'cancelling' the pulses with counterpulses from the other U-joint, so the speed of the output side of the shaft is constant.
The ball-and-socket joint is prone to failure on these, and results in a clunking / thunking sound similar to that of a bad U-joint.
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