what are the advantages of having a knife edged crank?

 

the point of it is that its sharp so it cuts though oil better for quicker rotations but theres a debate wheather its worth it cuase it takes of material making it slightly more frail.

 

i see and micro polished so the oil doesnt get sticky to the crankshaft?

 

You micropolish the bearing journals, not the counterweights on a crankshaft.

Knife edged cranks were much the craze years ago, but they don't really add much in the way of performance - speaking from experince - or longevity - agin, speaking from experience. Yes, they lower the rotating mass, but a lightweight flywheel can do the same thing for you.

Don't bother with it...

Kirk

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dohc-nyne &raquo;</TD></TR><TR><TD CLASS="quote">i see and micro polished so the oil doesnt get sticky to the crankshaft?</TD></TR></TABLE>