SOHC.co.uk Forums > CB500/550

Welded Cush Drive?!

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Raygun:
See some pictures! Hopefully this helps. I'll take the brake plate off and take some photos from the other side too.

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Oddjob- I haven't yet as it is a bit daunting getting it right.

K2-K6:
They didn't want that to come off did they  :D

Realistically, that's most likely a lathe job to remove it in decently competent fashion, would involve machining it such that it would probably scrap the hub if the wheel takes priority in which part to save.

Not a difficult job for a turner with lathe that would take the diameter (or a gap bed lathe on which part of the bed can be removed in front of the chuck to allow the wheel space to spin) then it's a fairly small job to complete.

matthewmosse:
Yes, looks like either the hub or the sprocket carrier is gonna get a bit too small when removing that assembly, possibly a carefully ground hss parting tool might seperate the 2 with a 2mm gap say, possibly less if there was a tapered cut. If you can un lace the spokes it can be done on a fairly modest  sized lathe and then the wheel rebuilt afterwards  - that was the approach I used to re line a cracked drum brake. I've not yet completed fitting a big chuck to my gap bed lathe to be able to spin a complete wheel on there.... I'm sure any engineering firm with a large lathe could get those appart - but quite likely the sprocket carrier would be the bit you'd choose to have reduced ( possibly beyond useable ) I'd geuss. It could probably have a big o ring squashed into the gap with a recess made if a replacement wasn't forthcoming, not a pretty repair, but probably enough to keep dirt out.

K2-K6:
It's a Lester cast wheel so no possibility to strip it of spokes.

Agree about turning with thin parting tool. If it had the bulk of welding bead machined off first to restore both component's edge form, then you could probably get a thin parting tool straight in on the face toward wheel centre leaving the wheel casting at full thickness and see what you get with the hub.

From the lack of weld penetration there, it looks like the two components are substantially still intact underneath.

matthewmosse:
Ah, lost track of the cast alloy factor in the thread, yeah, gap bed or big lathe. Is the guy in huddersfield still trading? I think I'd heard hed retired.... pity. He was well priced and knew what he was about and had the right kit.

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