SF2

Was the chain actually snapped, as in plates or pin broken? It could have been brutally opened to enable the bike to be moved.
It looks pretty grim but as is said, get it apart and see just how deep the rust is, you never know.
 
Tippie said:
Was the chain actually snapped, as in plates or pin broken? It could have been brutally opened to enable the bike to be moved.
It looks pretty grim but as is said, get it apart and see just how deep the rust is, you never know.
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It looks to have snapped but I will check it again, it can't have snapped at any speed or it would have caused major damage or been spit out down the road I would imagine. The chainguard looks fine for instance but the hub vanes are damaged. I only glanced at the break but it was in the centre of the side plates.
 
pf1 said:
It looks to have snapped but I will check it again, it can't have snapped at any speed or it would have caused major damage or been spit out down the road I would imagine. The chainguard looks fine for instance but the hub vanes are damaged. I only glanced at the break but it was in the centre of the side plates.
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Hub vanes also go when the sprocket carrier bearings give up the ghost. Vanes rub against the lower shock nut.

Paul
 
Ok the nut fitted is the extra flat one, and the chain is snapped on the side plates near the rivet, it's twisted and tortured and from what I can see it looks like it has jumped the sprocket and become trapped between the vanes and the thin nut, it has actually punched a section out of one of the vanes not just sawn through it.
It is bloody cold out there too.
 
pf1 said:
Ok the nut fitted is the extra flat one, and the chain is snapped on the side plates near the rivet, it's twisted and tortured and from what I can see it looks like it has jumped the sprocket and become trapped between the vanes and the thin nut, it has actually punched a section out of one of the vanes not just sawn through it.
It is bloody cold out there too.
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You sook :D :D :D
 
What's the condition of the sprockets? If really badly hooked it could indicate that it's a simple case of lack of maintenance that caused a totally loose and rooted chain to eventually snap. Doesn't sound like an engine seizure kind of break.
 
Sprockets don't look bad, I suppose all will be revealed when I take it apart. One good thing is that I may have a source of parts now.
 
ozijotati said:
You really have taken on an interesting project Pat, if it can be saved all credit to you👍😀
Tom
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It can be saved mate, I was talking to someone with lots of spares yesterday so it's not mission impossible. The nice thing about the bike is the fact that all the original stuff is there. You probably saw my mouse mat with the Continental Motors SF2 ad on it, one look at that and I'm inspired again ;)
 
pf1 said:
Mr Nairn reckons they are infinitely repairable.
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I'm with Mr. Nairn :). And as per Piranha-bro2, much of what you see may be inconsequential surface rust.

Just be grateful it's not a Bonneville (sorry, Maurice: cheap shot, I know, but take 'em when you can ...)
 
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