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Risk of chain breaking?

tommywcom2010-06-24 19:15:14 +0000 #1
I have 33,000 km on my 2007 GSX-R600. Lately the chain has been hanging quite low- I left it like that for about 2 weeks while waiting to get to the bike shop.

At the shop I was told I should get the chain and sprockets changed out. This is after I had already dropped $250 on some other work and they would have to order the gear in anyway.

I don't mind puttering along for a while making do with what I have now for another 5000 km until the next service. How big is the risk of the chain breaking on me and screwing up my tranny or other expensive parts?
syncro2010-06-24 19:20:08 +0000 #2
firstly, by running your chain really loose you'll accelerate the wear of the chain and the sprockets.

now, whether your chain needs replacing depends on a couple of things, but firstly i would say look at the adjustment limit indicator. if your chain adjusters are already at their limit and the chain is still loose then it should be changed. you can also check by the teeth on your sprockets as well. if the sprockets are worn then the chain probably is as well. here's a pic of a good and worn sprocket.



even if you're just putting around town, if your chain breaks it could seriously injure your leg, breaking or even worse amputating it. is it really worth the risk of mangling your leg just to save a couple hundred bucks?
Borgnine2010-06-24 20:04:56 +0000 #3
Pretty much what syncro said...

Even barring injury, there's no good place for that to happen.
TechyIam2010-06-24 19:45:24 +0000 #4
Quote:

Originally Posted by tommywcom

I have 33,000 km on my 2007 GSX-R600. Lately the chain has been hanging quite low- I left it like that for about 2 weeks while waiting to get to the bike shop.

At the shop I was told I should get the chain and sprockets changed out. This is after I had already dropped $250 on some other work and they would have to order the gear in anyway.

I don't mind puttering along for a while making do with what I have now for another 5000 km until the next service. How big is the risk of the chain breaking on me and screwing up my tranny or other expensive parts?

Post clear pictures of the chain slack, the rear sprocket teeth (front sprocket if you can), and close up shots of links of the chain.

Although five thousand kilometers is not insignificant but at the same time, I don't feel it is that many either, unless the chain is defective, improperly installed, the likelihood of a chain coming completely off is not that high if the chain and sprocket wear is not outrageously high (and the chain tension can be properly re-adjusted), and you are really willing to putt putt around.

Like others have said, not only your bike can get seriously damaged, but the chain can cause serious injuries to yourself (maybe others too) as well if the chain comes off. It would be wise to seek out more than one opinion (ie. bike shops as well).
Coastmaster2010-06-24 20:26:38 +0000 #5
What the others have said.

Here's a guideline I've used for years. Take thumb and forefinger and grasp chain at rear of wheel sprocket. Pull. If you can pull it off your sprocket more than half the depth of a tooth your chain is done and its likely your sprocket(s) is done as well. Replace RFN. Lube the new one with a quality lubricant about every 500k.

And no, I DO NOT want to start a discussion on chain lubrication/maintenance.
Argyle2010-06-24 19:52:44 +0000 #6
order the chain/ sprockets off a reputible seller on EBAY

good idea to have a shop install it but you will save a ton of cash on the parts

You dont want to screw around with chains and sprockets being worn out...

I wouldnt want to be around to see that thing whipping off at speed

There is a cost to owning/ maintaining a bike, sometimes you just have to eat it
bcrdukes2010-06-24 20:02:10 +0000 #7
Quote:

Originally Posted by Argyle

order the chain/ sprockets off a reputible seller on EBAY

good idea to have a shop install it but you will save a ton of cash on the parts

Sorry to venture off-topic but are shops likely to install a part you purchased elsewhere?
EMS2010-06-24 21:56:00 +0000 #8
Quote:

Originally Posted by bcrdukes

Sorry to venture off-topic but are shops likely to install a part you purchased elsewhere?

We specialize in it.

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