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CB 500 resurrection
gary123:
--- Quote from: Bryanj on September 01, 2022, 05:42:33 PM ---The 550 is a different bearing with an integrated oil pump to lube the gear shafts but it wont work on 500, would worry me it might lock up as no oil would be pumped
--- End quote ---
Ok the mix and match nature of my stash of bits is starting to worry me.
Oddjob:
I'll see if I can find a needle roller out of a 500 for you Gary. No cost. Do you have any of the pins out of one?
It was the slot cut out of the casing where that needle bearing goes, can't remember it on the 500, probably just old age setting in.
gary123:
Oddjob thats fantastic of you, but just hold off for the moment. I really need to step back and see exactly what I have.
I just compared the shafts against those from a 550 and they appear identical. Im beginning to think someone tried to put a 550 gear set in.
Do you think thats likely, is it even possible?
Oddjob:
They'll fit but it's possible the forks may not line up properly.
One giveaway on the countershaft is that it has a small cutout in the end of it, opposite end to where the sprocket goes. Look inside the needle roller and you'll see a small flange that turns the little oil pump, the 500 doesn't have anything in the shaft that can drive that, the 550 has. If you see that you know it's a 550 without checking the number of teeth on the gears.
gary123:
My primary shaft has 23 teeth which I think is correct for a 500, both the other shafts have the small oil pumps on the end.
Its all very confusing.
As a positive note just got back from Julie and Grahams with a whole heap of shiny parts. ;D
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