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 Post subject: crf 250l 13 tooth sprocket
PostPosted: Sat Sep 09, 2017 9:32 am 
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Morning all,
I have recently fitted a 13 tooth sprocket(renthal) to my crf. It fitted straight on with no issues.
But....the standard honda sprocket is slightly different-- it's got a rubber piece either side which appears to be some sort of spacer although it isn't worn and doesn't separate from the sprocket( bonded into place as far as I can tell).

Anybody know what the rubbery bit is for? It doesn't appear to be important but if it is some sort of alignment/ spacer type thingy I would prefer to find out before the chain jumps off.
Thanks.


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 Post subject: Re: crf 250l 13 tooth sprocket
PostPosted: Sat Sep 09, 2017 11:08 am 
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Location: St Albans
www.jtsprockets.com/sproc

Not aligment - vibration dampening and reduced wear

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 Post subject: Re: crf 250l 13 tooth sprocket
PostPosted: Sat Sep 09, 2017 10:45 pm 
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It was the same on the original dr350. It's that meet eu noise levels by dampening the chain noise. Or so they said back in 1999


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 Post subject: Re: crf 250l 13 tooth sprocket
PostPosted: Tue Sep 12, 2017 8:32 am 
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Thanks chaps.


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 Post subject: Re: crf 250l 13 tooth sprocket
PostPosted: Tue Sep 12, 2017 1:22 pm 
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Location: Over by there
Nothing to do with noise, they are supposed to reduce the hammering that the output shaft splines get, but in practice don't make much of a difference.

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