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1967 CB450K0 Black Bomber Rebuild - By Royhall
royhall:
Forgot to mention that I checked all the sprocket part numbers and they are all the same from K1 to K7.
royhall:
Ash. The hub diameter is 1.651" and 1.647" on the worn surface. The bush diameter is around 0.837" although it's hard to measure with a telescopic gauge due to the oil scroll.
Bryanj:
4 thou is way more than enough to cause the missed starting problem, if you could get some made you could get the grear slightly ground till true and use oversize diameter rollers.
From memory, on 750, there is only just over a thou in difference between the deep end of the slot and the shallow end of the slot the roller sits in which would suggest anything over a thou wear is too much
AshimotoK0:
I just measured two that Jason (Woodside) sent me last week to fix a unit for him and they are both on the upper size you gave Roy or more. I really need too take to work to measure though, as my larger micrometer was last calibrated in 2002 :-[ ... Interesting that on one of them, you can deffo feel undulation, where the rollers have indented the surface. I will also take the DK sourced one to work to measure and report back.
How about the outer clutch part Roy ..is that OK? Item 7
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royhall:
There are indents in the outer but until I assemble it with a good sprocket it's hard to tell. My hub looks very smooth it's just very even wear that you can actually see by eye, defo shot.
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