[arthrodriver]

Thanks for you all's patience in asking old, familiar questions. I looked back at the OKRASA vw hotrod crank. It had needle rollers and problems with skipping. But the Japanese now use rollers extensively. Like many things ball bearing tech is deeper than a well, and I'm sure many specialists looked at this application before and after design and changes. What about vibration pulses through the chains from the cam action? Enuf already?

Edit. I was going to shut up, but I wish an electronic engineer could chime in on the feasibiity of a noise sensor. These guys can detect a gnat's eyelash movement, why not some converter, mech to elect noise. Rhetorical I guess. Maybe a NASA sized effort.