SOHC.co.uk Forums > Project Board
The rebirth of Lazarus
mickwinf:
well i have started to re assemble the replacement crankcases which came off an earlier bike, and i am a bit puzzled by the neutral stopper thingy that screws into the top case and engages with the shifter drum. I always presumed it had a ball that engaged in a hole to give a positive position for neutral, and indeed the earlier version has one, however the later version does not have the ball. So what does it actually do? is it just to keep the shifter drum from moving laterally? At least i am putting things together now!
Sesman:
Not quite with your there. I don’t think 550 has the top stopper. Least mine doesn’t
Bryanj:
Its just to locate the drum, there should be a collar on the spigot of the bolt, neutral stopper is then part of the mechanism on the drum end behind the clutch
Oddjob:
Bryan is spot on. This mechanism was revised by Honda part way through the K0 production run IIRC. They removed the ball bearing and changed the mechanism inside the clutch area for a more positive neutral selection. The upper bolt ends in a thin pin which is too thin for the drum so they packed this out with a small collar which prevents the drum from moving side to side and causing engagement issues.
mickwinf:
cheers guys, it makes a bit of sense now after thinking about it, what confused me was the drum still has an indent for the ball, just not used on later models.
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