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Discussion Starter #1
Hey guys, my chain makes a nice loud wrrrrrrr noise

i have aftermarket sprockets

do you think this is bad chain alignment ?

i did notice the factory front sprocket has rubber on both sides, is this to quieten chain noise ?

Cheers

Tony
 

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When did the noise start happening? Gradually or suddenly?

jimundascores

Edit: The stock front sprocket does have a dampening material on it... not sure if it's rubber, but it's a similar material and it is supposed to dampen.
 

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Discussion Starter #4
after i changed the back sprocket.

i could be wrong but it does feel like it has got a little louder... (5 hours riding time since)


wookie! definatly could be the problem
 

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Did you check that your chain is in alignment with the front sprocket and that you have chain tension in line with spec? If it's in alignment and tension you should be ok. Rule of thumb is to replace your chain when switching sprocket(s), so you might be reaping what you have sown there.

Check alignment and tension and report back.

jimundascores
 

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BTW - I once on my first shot changed my rear sprocket with the help of a buddy. He was really "experienced" with that process. I allowed him to tighten things down as I had no idea. Afterwards, I had some really funky shit noises coming out of my gearbox while the bike was on the stand and a test run on the road had similar funky noises at 3k-4k rps with maintenance throttle.

I straightened the front/rear and everything was cool. Seems like we should never let anyone touch our bikes and if do, we should simma down now.

jimundascores
 

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Discussion Starter #8
yeah buddys dont seem to care too much as its not their bike...!

might just be an alignment... though im sure the rubber on the front sprocket quietens things down a bit


yehaaw
 

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Too tight?
 

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yeah buddys dont seem to care too much as its not their bike...!

might just be an alignment... though im sure the rubber on the front sprocket quietens things down a bit


yehaaw
The easiest check for sprocket alignment is to look at the clean shiny patch on the chain rollers. If the clean area is all to one side and not centered, the chain is being pulled on out of alignment. The munge on the rollers should be about equal on both edges up against the link plates. If the noise has been going on since you changed sprockets, my guess would be the chain is really tight. Is your new sprocket bigger than the one it replaces? Even 1 or 2 teeth will drastically change where the rear wheel needs to be in the swingarm for proper chain slack.
 
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