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1967 CB450K0 Black Bomber Rebuild - By Royhall
AshimotoK0:
--- Quote from: royhall on November 30, 2019, 06:25:53 PM ---What are they like on sprocket position as it may just be the bearing retainer sleeve is different. Loads of people are selling 500T hubs as 450, is it just the K0 that's different to the rest. have you got a later 450 hub you can check against the K0.
They can't be vastly different as I know it's possible to fit a 500T engine straight into a bomber. Maybe they beefed it up at some point to stop the cracking.
Been watching one all week advertised as cb450/cl450/500T that the seller says has no cracks, he's also sure it will fit so I have put a sniper bid on. Finishes in 16 minutes so I may be the owner of more scrap iron.
Cheers.
--- End quote ---
If you notice Roy the 500T doesn't have the ribs on the outside like the Bomber (see red arrow in attached photo).I don't have any 450 5-speed hubs to compare but I can have a closer inspection of the differences in the 500T tomorrow.
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AshimotoK0:
I just checked and the K1 5-Sp hub and CB500T rear hubs are both ---292--- part numbers. Original was -000 but superseded to -010 500T part. for K1
AshimotoK0:
Thinking more about it.. maybe squeezing an extra gear into the 450 extended the width of the engine around the gearbox output shaft by a few mm. So I guess a 450 5-sp engine would fit into K0 Bomber frame but then you would need to use a 5-sp hub. You can't beat having the parts side by side to compare. People have possibly just fitted a 5-sp engine into a Bomber and had a few mm of chain mislignment which is a bit worrying.
I posted originally that below may have been pattern but I guess just corroded Genuine parts and hence a changed CMSNL part no.
CB450K0 Bomber 'imperfect alternative' (I guess it means they are corroded by their description)
https://www.cmsnl.com/products/imperfect/hub-rear-wheel_OC-0001.2982/#.XeNwhIP7TIU
CB450K1 'imperfect alternative'
https://www.cmsnl.com/products/imperfect/hubrr-wheel_OC-0001.4050/#.XeNw9oP7TIU
Also checked and one spacer is Bomber 283 part on the K1 and the other side is a 292 part which would figure.
Arch stanton:
Hello Roy.
I have both front & rear hubs. Complete with brake plates, spindles, spacers & adjusters. I am in Garstang.
Regards.
Sean.
royhall:
--- Quote from: AshimotoK0 on November 30, 2019, 11:28:32 PM ---I just checked and the K1 5-Sp hub and CB500T rear hubs are both ---292--- part numbers. Original was -000 but superseded to -010 500T part. for K1
--- End quote ---
You are correct Ash. They moved the sprocket over at the beginning of the 5 speed. Just taken me 2 hours to establish that, then logged on to let you know to find you had already figured it out. ;D Strangely I have seen an article some time ago about fitting a 500T engine into a bomber. They said it went straight in without any other modifications, must be eating drive chains. Unfortunately I won the auction last night so we probably now have yet another useless rear hub, only cost £26 including postage so not too bad. You never know it may be a bomber hub, not.
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