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RE: Why did my 5,000 (but 9 years old) chain snap?
Posted by : Danny K (92.236.79.44) 
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On Thursday 24/05/12 at 02:53:04
Well been dashing about this afternoon, and passing near Fowler's I called in on the off chance to see if the chain had arrived - it had; so it's done and dusted - fitted and oiled. But when I came to fit the damaged sprocket cover I discovered yet more damage. The bolt-holding at the bottom had also sheared off in all the carnage - so only one bolt holding the sprocket cover in place for the moment. Asked Fowler's out of curiosity for a price on a generator cover and the sprocket cover and was quoted £80 for the two.
I'm not road testing it until the chaincases arrive - with a bit of luck that could be Friday. But to all intents and purposes it's ready to go 
Also picked up the old chain from the roadside - the chain had snapped about 4 or 5 links away from the split link. One side only of a side plate had broken away at the furthest end holding the pin. The opposite side-plate was still firmly gripping the pin.
- One broken side plate resulted in all the subsequent damage.
Reading the notes that came with the new chain it gave a warning about defective chains smashing crankcases, wheels, swing arms etc., And there's me thinking the damaged covers were an unfortunate one-off.
Thanks to all of you for the hints, tips and views - I'll be re-reading them again.
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