SOHC.co.uk Forums > CB500/550
CB550 refurb
Laverdaroo:
That looks a bit dodge to me, if it’s deep get it skimmed, I did but only cos I had loads of ‘meat’ left but I think I’d be changing that anyway Johnny.
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Johnny4428:
You’re probably right Roo. Not deep, barely feel anything with the fingernail. I will investigate further before looking around for a replacement.
Orcade-Ian:
Can’t imagine it being a crack in that material Johnny, have you done a ‘ringing’ test? Damage looks more like a wheel dragged out from under a pile of heavy stuff with something sharp under it. I have a can of penetrant flaw detection dye if you want to be certain.
Ian
Johnny4428:
I did wonder about some sort of acoustic test will try that and see what the results are. Was going to clean it up and paint the centre but will have to be certain of its integrity before I spend any time on it.
Thanks for the offer of the flaw detecting magic gear Ian!
K2-K6:
I agree with Ian, unlikely in this material.
Looks to have been scraped by another object, then still used which has flattened any burr.
They are really, really tough material spec .... at the end of the world there'll be just cockroach and these old 70s Honda disc :D
There's no tracking at either end of that mark either, not inboard into mount flange or outboard in evidence of how a crack would ordinarily propagate.
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