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Discussion Starter #1
Hello, friends! I noticed this morning when loading up my TW that it is making a new sound. Rolling the bike forward makes a steady "click" sound coming from the front sprocket area. The faster you roll the bike the more frequent the click. Rolling the bike backward does not produce this sound. Has anyone experienced this before?
-reddave
 
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Not uncommon. Best to make sure your rear sprocket is properly installed (some require spacers vs stock) and make sure your chain adjusters are on the same mark on both sides.
 
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I tend to notice it more as the front sprocket starts to wear some with the teeth changing angle slightly and the chain slightly stretched. As the bike is rolled forward, the chain is pushed upward on the teeth of the front sprocket. As the chain rides the outer part of the tooth and passes the . . . oh let's say 5 o'clock position . . . it can no longer ride the roller coaster upwards and drops off the tooth and taps the one behind it on the downward drop which causes the clicking noise. This is a phenomenon known as W.F.S. (Warn Front Sprock-mosis)

As the bike is pushed backwards the same thing happens except the rollers are allowed to drop and roll back down to the bottom between the two teeth and ride where it normally would do to gravity as the roller passes about the 11 o'clock position, thus no tapping sound.

This phenomenon is referred to as Reverse Osmosis ! ! ! :grin:
 

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..... make sure your chain adjusters are on the same mark on both sides.
Actually, some of these bikes require different settings on each side of the adjusters. Mine needs 2 indents less on the right to line up the rear sprocket with the front. The only way to tell is to carefully measure the distance from the swingarm bolt to the rear axle with a piece of wire. I discovered this when I installed dual sprockets on my 2010.

This was the wear at 4,000 miles on the inside:
TW200 Sprockets 031.JPG TW200 Sprockets 032.JPG

And on the outside (right photo)

I never noticed any weird handling or tire wear, but if you want to get the most mileage out of your chain and sprockets it's worth looking at.
 

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I also noticed the adjusters being off. If you have one of those fancy laser chain alignment tools you can use that, but the easy/free way is to just carefully watch where the chain is riding on the sprocket, looking from behind. There is a little side-to-side slop, and the chain will tend to track to one side or the other depending on wheel alignment (If you've owned a belt drive bike, it's the exact same idea as setting the belt tracking). I found on my TW for the chain to track centered the same result as Rocky, the right/brake side was 2 clicks "less" than the left/sprocket adjuster.

Your clicking sound is almost certainly a worn out front sprocket.
 

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Discussion Starter #7
Thanks for your responses, everyone! I've always had my adjusters matched and never heard any noise before. Sounds like it might be time to finally try that 15 tooth front sprocket and make sure I've got those adjusters set correctly.
 

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I had my chain a touch too tight one time. It ticked.

Also check the guard that sposta stop sticks from going into the rear sprocket. I bent mine in once from a tip over. The plastic was ticking againt the outer plates of the chain, as it went by.
 

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I wore my front sprocket down so bad that the only symptom was a loud snapping when doing wheelies or jumps. I was worried it was something worse but turned out to be the chain snapped over the rounded teeth. Otherwise it sounded normal. Then again there is more then one way to wear a sprocket if you engine brake or not.

Could it be something so silly and harmless as a piece of branch caught in there?
 

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I had my chain a touch too tight one time. It ticked.
I find that a loose chain, and sometimes a dirty chain, will make a similar soft ticking sound when I push my bike. Both are easy fixes (which gives me no excuse for letting my chain get too loose or too dirty in the first place!).
 
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Discussion Starter #11
I brushed and waxed the chain yesterday - no change. Checked for any foreign materials hiding where they should not be - all clear. Tomorrow I'll try some playing with some different combinations on the adjusters and see what happens.
 

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Discussion Starter #12
Played with my chain adjusters for little bit today just to see if that helped. I set both adjusters up one setting and down one setting but found no change in sound. Then tried adjusting each side up one notch and then down one notch. Called it a day with a much lower volume clicking sound after decreasing the right side adjuster by one notch. Going to try some more combinations and make sure I have both sprockets aligned correctly before replacing the front with a 15T.
 

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Discussion Starter #14
Roger, Rock! That was just about to happen when I realized what time it was and had to work on dinner for company instead.
 

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Steel ruler - make sure the distance is the same on both sides of the rear wheel rim to the swinging arm - then look at what the adjusters tell you ….
 

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Discussion Starter #16
Steel ruler - make sure the distance is the same on both sides of the rear wheel rim to the swinging arm - then look at what the adjusters tell you ….
Will do! I really like this forum - on my own accord, I would never even considered having the chain adjusters offset in any way!
 

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You should be able to look at it from the rear and eyeball it down the whole chain and tell if it's off or headed in another direction slightly.
 

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Discussion Starter #18
Offset by two notches was just a bit too much. Thank you, friends!
 
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