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Old 11-11-2012, 03:02 PM   #1
ModernDiesel
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Aftermarket front sprocket noise typical?

Read and read online and I repeatedly see people complaining of excess noise coming from the front sprocket. Compared my oem sprocket and the new 14t and the oem has a rubber coating on the shaft side. Definitely the difference.

Any of y'all experience this? I just trust input here more than other forums

The noise is there under light acceleration, cruising at medium speed and coasting to a stop. A medium pitch whining sound. Clutch engaged tells me it is the final drive. Guess it's the usual give and take for performance parts!
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Old 11-11-2012, 03:04 PM   #2
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give and take yes. how many miles on your chain? how many teeth did you step down in front?
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Old 11-11-2012, 03:18 PM   #3
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Quote:
I just trust input here more than other forums
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but yes, its likely that the rubber coating you noticed from your OEM sprocket (that is missing from your a-market) is likely the reason you mentioned
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Old 11-11-2012, 03:51 PM   #4
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Word. I can already tell I'm not going to like the aluminum rear. Adjusted slack twice already in te first 200 miles.

And not optimistic on the wear pattern
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Old 11-11-2012, 04:01 PM   #5
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Did you only change the front sprocket?
How old/worn was the chain when you replaced the sprocket?
On top of the rubber damper not being there wrapping the chain around a 14t c/s sprocket will be noisy because of the small radius.
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Old 11-11-2012, 04:26 PM   #6
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New front 14t 520, new rear 45t 529, new RK gold 520.
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Old 11-11-2012, 04:31 PM   #7
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Why did you go with a 14t front. What was stock?
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Old 11-11-2012, 04:35 PM   #8
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Quote:
Originally Posted by ModernDiesel View Post
New front 14t 520, new rear 45t 529, new RK gold 520.
Hope the 529 is a typo..
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Old 11-11-2012, 04:38 PM   #9
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Yeah
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Old 11-11-2012, 04:39 PM   #10
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Stock was 15/43. I don't need to go 155, I like the extra torque and I'll be where I want to for the track
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Old 11-11-2012, 05:05 PM   #11
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In your case. You should have just raised the back. The 14t front sprocket wears out the chain faster.
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Old 11-11-2012, 05:10 PM   #12
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If the factory steel front passes visual inspection is it ok to swap it back in?
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Old 11-11-2012, 05:37 PM   #13
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Quote:
Originally Posted by ModernDiesel View Post
If the factory steel front passes visual inspection is it ok to swap it back in?
how does the rubber coating look on it? how many miles are on that sprocket?(probably irrelevant but jc) if it really is still in good shape i'd say go for it and just stick with a larger rear.
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Old 11-12-2012, 04:41 PM   #14
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Rubber is worn, sprocket looked fine at first inspect but after looking t over I found a slight hook depression forming on the shaft side of each tooth. No dice
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Old 11-12-2012, 05:07 PM   #15
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yeah i wouldnt put a used sprocket back in the mix with a new setup like you're describing. better to just use what you got and chock the outcome up to experience (kinda like my front michelin tire im going thru now) until you can get some new parts. or, if you're loaded just throw down the cash on a new front sprocket.
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