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DaveDanger
Guest
The supposed advantage of a chain over a shaft is the fact that a chain and sprockets DO transfer rotational torque more efficiently than a shaft. ANY method of energy transfer has some loss of efficiency loss through friction at the very least. Slightly more efficiency is lost when transferring rotational torque through a 90 degree turn (differential) of which there is almost always at least 1 in a drivetrain. Factor in the maintenance, the smoothness, the reliability of a shaft, and I'll happily give away that few percent of torque transfer. If I'm riding so close to the edge that I need to increase my HP transfer by 4%.... I need to glance at my drivers' license one more time and remind myself how many decades have passed since my date of birth. (Stoopie ole man!)