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August 30th, 2010, 11:42 PM   #1
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My Chain Snapped... What's Going On?

Hi Guys n'Galls

Warm, sunny conditions, 2004 FE501 with 17" S/M wheels and road tyres fitted, dropped down a cog or two for a bit of acceleration and 'bang' ... there's my chain hanging all limp-like off the swingarm! (It actually fractured across one of the pins that make-up the split link).

Being used to road bikes and closed link chains (no split link), I was amazed to notice that the Regina fitted to my bike (I've only owned it for 5 minutes), was of the split-link (dirt bike), type! Is this normal and do I need a closed link chain to handle the demands of 501 power through sticky road tyres onto tarmac?

Help... I'm all dazed and confused (again!). Do I need a new chain (it appears to be in VGC), or can I simply drop-in a new split link assy?

Cheers
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August 31st, 2010, 12:36 AM   #2
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Re: My Chain Snapped... What's Going On?

That's pretty bad luck to have a breakage but pretty good luck that no real damage was done.

Split links are very common on trail bikes and, if fitted properly, there's no reason why they shouldn't be as strong and reliable as a rivet link.

If you still have the remains of the split link, check to see if it is actually a Regina split link that matches the rest of the chain. It is a stupid but common mistake for people to fit non-matching links. If the link has the wrong pin diameter or length, it is likely to lead to failure.

Personally, I'd now fit a new chain.

Greg
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August 31st, 2010, 01:01 AM   #3
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Re: My Chain Snapped... What's Going On?

I have always ridden enduro and trail with a spare master and a set of links. Never had a break until Berg used Regina chain. I then broke three. On the third break I made some enquiry and was advised that I was probably trying to get too much life from the chain. Rubbish, Rubbish, Rubbish!!! It is Regina in my view. I changed to DID and have never had a break since. That was 10 years ago so lots of chain use since.
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August 31st, 2010, 01:25 AM   #4
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Re: My Chain Snapped... What's Going On?

Originally Posted by GregUK
Personally, I'd now fit a new chain.
Me too! If you could be absolutely sure that there was no damage to the rest of the chain you could just fit another split link, making sure it's the right type for the chain, but it's hard to know there's not now a weak point somewhere which isn't easily visible and might make it fail again. You were lucky this time - next time it might smash the engine case or wrap round the rear sprocket and spit you off the bike so I wouldn't take a risk.

Some people do say that a rivetted link is stronger than a clip one but I don't know whether that's actually significant if the clip link is fitted properly. I'd probably go with whatever the bike was fitted with as standard - if it came with a clip link when new then I'd be happy to ride with one. I've certainly had road bikes before which had clip-type links and never had one break in over 30 years - the only chain which did snap had a rivetted link and didn't break at the split link anyway, but that was a sub-standard cheap chain fitted by BMW on the F800GS and apparently lots of them snapped so they *eventually* did a safety recall because of it.
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August 31st, 2010, 03:22 AM   #5
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Re: My Chain Snapped... What's Going On?

Thanks All...

I'll defo opt for a new chain of DID manufacture... Geez, I was lucky there was no damage to case, swingarm or wheel... and further that I didn't end up eating gravel - I was doing around 55mph at the time of the break!

Brill advice and guidance, as ever.

Keep it real Guys (and Galls)...

Chris
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August 31st, 2010, 03:55 AM   #6
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Re: My Chain Snapped... What's Going On?

Erm... can anyone recommend a suitable chain spec?

Do I opt for x-ring or o-ring type?

Thanks again
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August 31st, 2010, 09:56 AM   #7
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Re: My Chain Snapped... What's Going On?

For DID chains, here's my order (best to least-best):
  1. DID 520ZVM-X[/*qe5w7cq4]
  2. DID 520ERV3[/*qe5w7cq4]
  3. DID 520VT2[/*qe5w7cq4]
  4. DID 520VM[/*qe5w7cq4]

Alternatively eBay item 270627490901

Greg
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September 2nd, 2010, 01:06 AM   #8
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Re: My Chain Snapped... What's Going On?

Thanks Greg.

I actually plumped for an RK chain... more to do with availability than price/spec - just hope it's as tough as the DID branded ones!
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September 2nd, 2010, 01:27 AM   #9
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Re: My Chain Snapped... What's Going On?

Reginas have a bit of a reputation for breaking. I've had one snap on me, never again. RK EXWs and Chaingang sprockets for me.

http://www.chaingangchainsandsprockets.com.au/index.php

Steve
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September 2nd, 2010, 07:23 AM   #10
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Re: My Chain Snapped... What's Going On?

What years / models had the regina chain?

Are there markings on the chain which would identify regina?
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