Unlike a universal joint that has a bit of a phase for lack of a better word (the joint changes speed as it spins in effect speeding up then slowing down with every revolution)which effects efficiency. This is why it is so important to properly phase the halfshfts in our cars. If improperly phased the two ends would fight each other and unfortunately one would eventually lose. The car would also vibrate quite a bit. The CV (constant velocity) joint maintains a steady speed by using a better method of power transmission so is more efficient. I would like to know if there are any strength benefit to using a CV though.
Blaine
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