Thread: Knife-edge a race crank?
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Old 02-20-2008, 05:29 PM
PSk PSk is offline
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Quote:
Originally Posted by Little Italian View Post
Why do you knife-edge a crankshaft?
Only advantage is the weight removed. Some believe that the crank spins through the air better because it is more aerodynamic ... this is bogus because there is a dirty great big conrod big end stuffing all this theory up anyway. Also correct aerodynamics would imply a large rounded front edge tapering to nothing at the tail ... not a knife edge both ends. Have a look at a plane wing for example.

So yes removing rotating weight is always a good thing.
Pete
Last edited by PSk; 02-20-2008 at 05:32 PM.
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