Originally Posted by
wingracer
I am aware of that, but he said rpm and the rpm is the same.
Well, if you want to get technical, the rpm of the inner race will be the same as the crank rpm for both bearings but the rpm's of the balls themselves will be different (and different in two different planes) depending on the size of the balls and of the races.
We are on the same page, I didn't express my self very well, sorry!
I meant just that, the inner races are in direct contact with the crank so they turn at the same rpm as the crank.
But the speed of balls them selfs will differ upon there diameter in relation to the diameters of the inner/outer races where they are in contact.
I didn't want to step on any toes, just wanted to help explain.
Sorry I didn't do a very good job at it!