Chain Noise???

Skinnymoss

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I bought a used NC with 3K miles and by the time I hit 8K miles. I replaced my chain, sprockets with DID VX3 chain. About 3,000 miles in, I feel like it's making that droning noise. I gotten the chain tightened as it was too loose, maybe 45-50 mm slack. Now its around 35 mm. Again, some parts of the chain way tigher/looser than other parts. (I know this issue was mentioned for other users) I have not seen that in other bikes.

Only cleaned it once after 3000 miles, as I just installed my center stand. I have a loud exhaust (Danmoto) , yet the chain can be heard, in acceleration, neutral, and downshifting.... hoping it's not a safety concern. I suspected the links making noise.
 

Griff

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I would have preferred 45mm slack to 35. I never clean a chain but I do apply lube frequently. I suspect Your chain is too tight whatever about being lubed properly.
 
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670cc

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What griff said!

Leave chain slack set on the loose side of specifications. Tight chains make noise and wear faster. In your example I would leave it at 45mm slack.

Also make sure the front and rear sprockets are properly aligned.
 
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frog13

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If some links are more tight than others......clean it well, re-lube......then adjust. With tight links it generally impossible to obtain a correct chain slack. Curious........have you checked your valves?. This has nothing to do with your drive chain......I'm just curious.
 

Janus

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I really hope you didn't mean that you skipped lube and regular checks of your chain tension for 3000 miles
 

Oldbear

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You mention “tight links” . Are the “tight” ( need lube) or “frozen” ( time for a new chain). Chain if maintained should not have tight links or be shot at that mileage. Sounds like the chain may be a bit too tight as well…
 

SergeantChuck

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I swear the less I jack with the chain the longer they last. I leave mine fairly loose and I really don't measure the slack. I take a wrench and lift the bottom of the chain toward the swing arm, if it hits the swing arm I tighten it until has about an inch of clearance. Then I ride it for a few thousand miles. LOL. I probably neglect my chain a bit but they still last well over 10K miles.
 

Bskicrash1

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This noise you describe I can duplicate with my motorcycle when the chain slack is too tight, when the rear sprocket and front sprocket are out of alignment, when the chain has frozen links, when the chain needs lube.

If the chain is kinking due to frozen links, the chain is toast and time to replace. (You can cut out the frozen links and splice new links in using river style master links or just replace chain entirely) A frozen linked chain will cause lots of noise as it makes its contact with the sprockets. Once the internal grease seeps out, it will begin to freeze links. A chain that is badly frozen will even cause a clicking or vibration to be felt in your foot pegs.

I’d lift the rear tire off the ground and rotate the wheel and look for frozen links. If the links are coming off the sprocket retaining the curvature, you should be able to gently push with your finger to straighten. This is normal, just signs of a chain needing to be cleaned and lubed. I recommend o ring x ring safe chain cleaner with nylon bristle brush as to not damage the x rings. That vx3 is a top shelf chain. If the links require much more effort to straighten or won’t straighten, you more than likely found the culprit.

Next I’d check chain tension and adjust to a looser spec listed on the swing arm or manual. I would also have my chain alignment tool on the rear sprocket at the same time just to ensure it’s aligned.

Next, I’d turn the motorcycle off and coast it in a parking lot listening for the sound. The sound of noisy chain due to lube type or lack of is very easy to hear doing this because now the chain doesn’t have to compete with the exhaust note. apply lube and conduct this test again. If it’s quiet, problem solved.
I have a motion pro chain alignment tool and use it on all my motorcycles. It’s very easy to misalign the wheel if not careful. Installing the wheel spacers incorrectly, adjusting the rear axle nuts at an inconsistent interval, possibly not installing all the rubber spacers in the Cush drive.

One thing to note, the NC has a very forgiving Cush drive, so it will adjust for small misalignments.

Also, for what it’s worth, depending on what chain lube/wax you use, some are just generate more noise than others. I used maxima chain wax for years, it is sticky and gunks, creating a barrier of overbuild up on the sprockets, slider and front sprocket cover causing the chain to be quieter. If you use more of a spray lube such as the Honda lube, it flings off very quickly and the chain rollers are noisy because you can hear them on the sprockets. This is normal. I use a Teflon spray lube that leaves a dry film. It’s clean, but noisy compared to a chain wax that gets gunked.



hope this gives you direction. If this doesn’t work, can you post some pictures or link a video to help aid in diagnosing this.
 
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