SOHC.co.uk Forums > Project Board
1967 CB450K0 Black Bomber Rebuild - By Royhall
AshimotoK0:
My main question on all of this is ...will the later 5-speed complete rotor/starter clutch fit a Bomber? ... These are at least available at reasonable cost used, from time to time, (as I just found when I got a really nice one with the chhain and motor sprocket too for £120 from DK). Seems that Honda went though may design changes on the DOHC twin bikes starter system but the fact that you find the later assemblies in nice condition but every Bomber assembly seems to be, at least, semi-fooked, indicates that if you can fit the later assembly it's the best option in terms of reliability.
According to Nigel Harris (a member here) .... In a post HondaTwins in 2009, he stated there that he has a K5 system fitted to his Bomber. I will try to contact him via email to confirm.
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royhall:
To be honest I think any 450 unit will fit but you need to have the whole kit like you got from DK. Trying to replace one part is full of danger. I think even DK have realised that so they now sell them as a complete unit.
AshimotoK0:
My original 1967 Bomber rotor is at work Roy. But this is a close up of it ... It had thin tabs (look how bad it is though) :)
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royhall:
That looks stepped back from the outer diameter. If so that would be correct. I think they changed it to the thicker lugs to stop them snapping.
AshimotoK0:
--- Quote from: royhall on December 19, 2020, 12:00:14 PM ---That looks stepped back from the outer diameter. If so that would be correct. I think they changed it to the thicker lugs to stop them snapping.
--- End quote ---
But all of the later rotors I have seen have thin lugs including the 500T? I have emailed Nigel Harris and Ray Hull to ask if the later parts deffo fit a K0. I thhought i had read somewhere that the really late rotors dont fit ...something to do with the key-way.
I think I am going to fit an old crank, barrells and pistons and strarter system to some old crankcases and load the other end of the crank up on a test rig at work .. just to check it out and also to test an early K0 used assemby that's from bits that Jason (Woodside) want for his press bike, from the parts he kindly sent to me.
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