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Old 12-01-07, 10:26 PM
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Chain slap

I seem to get excessive chain slap on my 9 speed mtb compared to my 7-speed. The 9-speed runs an XT rear derailer.

Is there a way i can reduce this without dismantling the RD?
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Old 12-01-07, 10:27 PM
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have you confirmed that the chain length is correct?
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Old 12-02-07, 01:51 AM
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I was assuming the chain is the original but could have been replaced. The bikes a 2003 Kona Cinder Cone I got third hand. Only light use though.

How do I check correct chain length?
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Old 12-02-07, 08:49 AM
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Originally Posted by adamg
. The bikes a 2003 Kona Cinder Cone I got third hand. Only light use though.

How do I check correct chain length?
To size a chain, see: https://www.parktool.com/repair/readhowto.asp?id=26

Or, you can write Kona and ask.
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Old 12-02-07, 10:16 AM
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Originally Posted by MudPie
To size a chain, see: https://www.parktool.com/repair/readhowto.asp?id=26

Or, you can write Kona and ask.
If you have a triple and a mega range cassette on the back. This may be unavoidable.
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Old 12-02-07, 12:51 PM
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Make sure the RD's spring tensioner is dialed in properly.
The spring in the hanger pivot is supposed to be set to match the pulley cage pivot spring.
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Old 12-02-07, 06:28 PM
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If you're getting a lot of slapping on downhill trails, try using the outer chainring. It'll give you more tension. Avoid the larger two or three cogs for extended periods when in the outer ring though.
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Old 12-02-07, 06:31 PM
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Originally Posted by operator
If you have a triple and a mega range cassette on the back. This may be unavoidable.
This is true.

But it costs nothing and won't hurt to start with checking the chain length.
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