o0norton0o wrote:I went with the CNW open roller bearing on my rebuild. I eliiminated the gaskets and used the grey sealant (forget the name) My kickstart doesn't have excessive side play that I can see... but maybe it does and I am too clueless to observe it... The choice between roller and ball may be moot if both improved bearings outlast the rest of the gearbox parts. I like roller bearings, so I went with the spec'd CNW roller bearing. I can't imagine mick hemmings suggested a bearing which is a poor choice either... I would bet money that you could chose either and be totally fine...
I also installed the CNW sealed mainshaft inner bearing to cut down on any gear oil leaks at the output shaft. That has worked flawlessly too.
After watching Comnoz's excellent video I also went with a roller. There's really no thrust issue on the shaft and the explanation for shimming the kick shaft makes sense.
I think that if I ever have to disassemble the box for any other reason, such as to install a sealed main shaft bearing, the process will be faster as one can just remove the layshaft without resorting to heat again. A slight advantage, I know but I also like roller bearings where appropriate.