Having same problem as old post(link) right side box of rocks sound in low gear

[Oliver]

http://www.k-bikes.com/forums/showt...12&page=2&pp=10

This sound comes exactly like was said mainly first sometimes 2nd gear in very low rpms and stops immediately after 2500rpms. definitely coming from right side in the alternator area but hard to pin point. Ive had the bike a few months and have taken it apart and learned my way around very well and it runs great 35k miles. Anyway the guy at the dealer said it may just be slop in the transmission or slop somewhere. They said I shouldnt really worry about it and I havent. ive kinda gotten use to it and honestly im okay with it it hasnt gotten better or worse. wouldnt be a bmw without weird noises. I was just wondering if anyone knew anything more about this so I know if its something to really worry about. I have already ordered the alternator driving dog rubbers, however in the post i linked the person who had this replaced those and the sound didnt go away.

Also at idle regardless of clutch in or out some times I hear a clicking kinda noise coming from the right side of the engine. different noise than described up top. give it power and it sounds like things quickly tighten up and i don't really ever hear it again. its been like that ever since i got it. spline and clutch have all been lubed. clutch is in great condition.

just looking for some answers.

thanks

[pallum]

My theory is the alternator's monkey nuts bouncing back and forth on the drive dog. Before the engine gets past ~2500rpm there isn't enough speed/momentum to hold the nuts against one side of the dog so they're able to bounce back and forth in the cup. You get the same noise characteristics from the alternator's fan if the shaft nut is loose, which is what got me to thinking all this...

I would like to think if you made the alternator to drive dog connection tighter then the noise might go away, but by the drive system's design it would be difficult and probably not worth the hassle (you'll know what a pain it is if you've ever tried to r&r the alternator with the transmission still in place).

[Oliver]

Well I ordered new monkeyballs and an output bearing and IM hoping ill be able to do this without pulling the transmission. just did my 40000 and it was a bitch