Chain problem

Bod · Traffic Copper Joined: 18 Mar 2004 Karma :

Hi all, I have a ZXR 400L with a small chain problem. When the chain is going round, I can hear something slap or rattle as the chain revolves. The chain has been checked and tightened, any ideas?
Cheers
Bod

Claud 14.7 to 1 · World Chat Champion Joined: 06 May 2004 Karma :

sprockets?

Bod · Traffic Copper Joined: 18 Mar 2004 Karma :

the front sprocket does move slightly. Cant really tell if it needs changing? How would you know?
Bod

craigT19 · Jolly Green Giant Joined: 09 Feb 2002 Karma :

Take a look at the teeth, it there worn your notice Thumbs Up

look for this kind of thing...although this example is alittle extreme

https://www.dirttricks.com/worn_sprocket.jpg

and for a little comparison

https://www.constructionequipment.com/prevention/pix/CE03da004h.gif
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McJamweasel · BCF Junkie Joined: 22 Mar 2002 Karma :

Thats not extreme. This is extreme!

https://www.bikechatforums.com/download.php?id=2255
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craigT19 · Jolly Green Giant Joined: 09 Feb 2002 Karma :

LMAO!!! what happened to that nsr!!! were you too young to buy chain lube or summin Laughing

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McJamweasel · BCF Junkie Joined: 22 Mar 2002 Karma :

Something like that, yeah. Still - it did teach me the joys of chain lube. Very Happy

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Bod · Traffic Copper Joined: 18 Mar 2004 Karma :

humm, may be a new sproket is in order. Are they expensive?
Cheers
Bod

McJamweasel · BCF Junkie Joined: 22 Mar 2002 Karma :

Nope. £20 should sort you out with the pair.
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Bod · Traffic Copper Joined: 18 Mar 2004 Karma :

are they supposed to be loose? or should they not move at all when you have fitted them?

Kickstart · The Oracle Joined: 04 Feb 2002 Karma :

Hi

There should probably be a small amount of movement in the sprocket.

However check that the chain does not have a tight spot.

All the best

Keith
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mr.z · World Chat Champion Joined: 04 Feb 2004 Karma :

you will need to change both your chain and sprockett, otherwise expect whatever you change to wear out quite quickly Sad

as kickstart said check the tension at the tightest spot, too tight a chain is allot worse than too loose and will kill chains and sprocketts very quickly
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Bod · Traffic Copper Joined: 18 Mar 2004 Karma :

I will double check the tension on the tight spot Sad

Cheers
Bod

clemsta · Scooby Slapper Joined: 29 Apr 2004 Karma :

My NS125R's front sprocket has a little movement in it and it's new so i thinks they're designed like that, my back one has no movement. just remember to lube it about every 250 miles if it needs it. you are supposed to change your chain and sprockets at the same time but if the old parts are in good nick i would just save the money. Wink