29-01-17, 07:39 PM
(29-01-17, 06:58 PM)fazersharp link Wrote: [quote author=YamFazFan link=topic=21736.msg251119#msg251119 date=1485708786]I think I can say that the general consensus is that yes that is the case, and it is the luck of the draw if your shaft is undersized which explains why some have the issue and others not.
Am I correct in thinking that it wasn't the original nut and torque spec that was at fault but it was an issue with some of the output shafts being slightly undersized, thus allowing the nut to work free?.
My own research and theory points to the first 98 models being unaffected as the shafts were done in 1 factory and then the bike took off and the shafts had to be made in other factories to keep up with demand, then there is a cut off time when the problem was spotted and after that the shafts were in spec and the 12mm nut was issued as a fix instead of swapping the shafts on affected bikes. :lurk
Over the years on this forum not 1 98 bike has had the problem --- with the caveat being that it has to of occurred on a factory fitted nut, so as to rule out a replacement not being correctly fitted. Admittedly a 98 on original sprockets is getting rare although I have one.
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That's interesting that no 1998 bikes seem to have been affected by this issue. Your theory sounds quite plausible.
Is the only difference in the nuts the extra couple of threads?.
I had the uprated nut fitted to my 2003 Foxeye last year but it was done at the garage, so although I supplied the new nut (and got given the old one back) I wasn't able to compare them together.