Gen 3: 2008-2010 Noise..... - Kawasaki ZX-10R.net
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post #1 of 17 Old 08-28-2013, 10:34 AM Thread Starter
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Noise.....

Let me ask u guys a question.....the ones with -2 in the front.....have you experienced any noise from the sprocket after u went down -2?.......I recently changed mine and now I hear a lil noise coming from that area.....thanks for any input
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post #2 of 17 Old 08-28-2013, 11:01 AM
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g4, going 17/43, I immediately noticed a lower pitch at low rpms. Must be used to it now cause don't notice anything after a few hundred miles.
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post #3 of 17 Old 08-28-2013, 11:09 AM
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The stock sprocket has a rubber damper on it so the aftermarket sprocket will be louder.


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post #4 of 17 Old 08-28-2013, 11:18 AM Thread Starter
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I had a -1 and it wasn't too much louder than stock....I'm just wondering if the -2 is the culprit....the bike doesn't feel any different in performance, it's just a noise I heard that is aggravating as hell
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post #5 of 17 Old 08-28-2013, 11:36 AM
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This is from the chain rubbing the swingarm,the lower it gets the worse you will hear it.ill bet its worse on decell

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post #6 of 17 Old 08-28-2013, 02:33 PM Thread Starter
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This is from the chain rubbing the swingarm,the lower it gets the worse you will hear it.ill bet its worse on decell
That's exactly when it happens....when I get off throttle....but when I pull the clutch in it goes away
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post #7 of 17 Old 08-28-2013, 03:15 PM
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That's exactly when it happens....when I get off throttle....but when I pull the clutch in it goes away
its because your taking the load off the chain,only way to prevent this is raise the bike up some or go to a 16 tooth sprocket.if somebody tells you the sound will eventually go away then do the math....the chain will rub its way into your arm until it has a clear path and leave you with a highly damaged arm.your call

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post #8 of 17 Old 08-28-2013, 03:25 PM
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its because your taking the load off the chain,only way to prevent this is raise the bike up some or go to a 16 tooth sprocket.if somebody tells you the sound will eventually go away then do the math....the chain will rub its way into your arm until it has a clear path and leave you with a highly damaged arm.your call
This isn't entirely true. Raising the rear up won't have any affect since the sprocket/swingarm pivot relationship is unaffected by that.

But you are correct that the -2F is likely the culprit. That's a damn small sprocket. The chain will continually ride on the plastic chain guide and when off the throttle, the upper run will get all the slack and smack around.

You're best bet is to go back to a 16F and increase the size of the rear sprocket if you still want more gearing than that. -2F is too small IMO.

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post #9 of 17 Old 08-28-2013, 03:29 PM
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That's exactly when it happens....when I get off throttle....but when I pull the clutch in it goes away
Most likely this is due to the chain completely unloading at this point (well mostly). Under power, the upper chain run is tight and the bottom part flops around. When you close the throttle, the lower run gets tight and the upper run will whip. When the clutch is pulled, the only load on the chain is the rear wheel driving the front sprocket. There will be some load on it, but not much comparatively.

Is the sound coming from the right or left side? Do you feel any bumping in the left rearset when this is happening? Usually you can feel the chain slapping against the guide if it's severe enough.

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post #10 of 17 Old 08-28-2013, 03:41 PM Thread Starter
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Most likely this is due to the chain completely unloading at this point (well mostly). Under power, the upper chain run is tight and the bottom part flops around. When you close the throttle, the lower run gets tight and the upper run will whip. When the clutch is pulled, the only load on the chain is the rear wheel driving the front sprocket. There will be some load on it, but not much comparatively.

Is the sound coming from the right or left side? Do you feel any bumping in the left rearset when this is happening? Usually you can feel the chain slapping against the guide if it's severe enough.

It's coming from the left side...I can't feel anything in the rearset but it started happening when I changed the sprocket from 16 to 15...... And the only reason I did the change was bc I wanted to see if it would affect my track times
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