SOHC.co.uk Forums > CB750
750 K2 Strip & Rebuild - help please
Oddjob:
Try setting it on fire, if it goes up like a bonfire I’d say it’s most likely magnesium alloy. ;D ;D
Lobo:
… you’re a funny man Ken, however, I’ll pass on this one 😂
Lobo:
Can somebody tell me what the ‘Sprocket Side’ plate’s job is, and the original finish pls (black matt / gloss, zinc, or chrome?)
At the mo non-existent on my K2.
Ta.
K2-K6:
Unsure if it's right, but always thought it's function is to stop a loose/failed chain falling between the swingarm and sprocket face, then jamming on the securing bolts to lock the wheel.
Early experience with some chain failures on the 750 may have caused this path to be explored.
As initially noted, I'm not sure and haven't any significant information to confirm this is correct.
Oddjob:
The 500 one was certainly zinc plated, sort of a dullish grey. I'd imagine it copied the 750 in finish. I don't think black ones came in until much later.
The were not only functional, as in what Nigel has described but also decorative as the sprocket was covered and lets be honest, a sprocket isn't that attractive to look at. Now you can get them in gold etc that's changed.
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