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1967 CB450K0 Black Bomber Rebuild - By Royhall
royhall:
I have finally got to the bottom of the K0 numbers for the rotor. Here we go.
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Neither of these parts fit the sprag clutch that I have indicating that at some point in the past it has been upgraded to the later 5 speed parts. So the hunt is now on for a K1 to K4 rotor, not sure about the K2 as the part number is different.
Just to highlight the difficulty and confusion surrounding this part, CMS have this one up for sale that the part number has as late K0, but from the picture clearly isn't (note the part number at the top of the picture).
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AshimotoK0:
Not quite sure Roy but that seems incorrect to me
The rotor with the thicker alloy tabs on the outside has the smaller dia. sprocket hub and was for early K0
The rotor with the thinner alloy tabs on the outside has the larger dia sprocket hub and used n later K0's and the 500T has the same style tabs
I just bought a later one from early 5 speed CB450 from DK and it has the thin tabs and the larger diameter sprocket hub.
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royhall:
No I'm sure it's right. Both the K0 rotors take the smaller sprag clutch. The first one has the thin lugs set back from the outside diameter, the second one has thicker lugs right out to the diameter, but they both have the same internal size. I have had both of these items in my hands to measure and they both came with the remnants of the original Honda box with the part number on them. The one you have as later K0 is a K1 item, the one you have as early K0 is the later one. If that makes sense. You see what I mean about confusion.
AshimotoK0:
Still confused Roy but I think you are correct about that very early one. However, in your photo the later part labelled the -013 part doesn't look like this?
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royhall:
Pretty sure CMS have it labelled wrongly.
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