Chain/sprocket noise? - Wrist Twisters
 
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post #1 of 10 Old 12-31-2012, 12:04 AM Thread Starter
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Chain/sprocket noise?

So I've only very recently noticed this noise and it seems to be coming from somewhere around the front sprocket. Its definitely more noticable when I'm walking or rolling the bike around

is it bad or is it normal?? any ideas what might be the cause?

Chain tension is within spec and I've been lubing fairly religiously approximately every 200 kms
sprocket is also tight

video:

Chain/sprocket noise on Hornet 900 - YouTube

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post #2 of 10 Old 12-31-2012, 12:12 AM
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Just watched it. That's a common indication of a tight chain. Did you check the slack after a proper lubing?
It's tight or your chain is done. How many miles on the chain, counter and sprocket?

*edit: Just watched again on my cell phone. It looks like you've got rust on your chain. Or is that dirt?

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post #3 of 10 Old 12-31-2012, 12:31 AM Thread Starter
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Im the third owner, I've done approximately 5000km on it (2485.5 miles). Bike now has 43250km (26874 miles)
going through the previous owners servicing receipts and there is no indication of the chain of sprockets being replaced

and Im not sure if its rust, I haven't attempted to clean the chain I did get some kero/grease mixture on it while attempting to clean out the front sprocket cover though lol

Just as aerodynamic airplanes are simple and streamlined, a motorcycle--which manages to balance an engine and a seat between two wheels--has a mechanical integrity, with intertwining pipes, chains and springs, that is fascinating to behold - Peter Plagens
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post #4 of 10 Old 12-31-2012, 12:58 AM
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I'll let someone else watch your vid (on a tablet or pc). My guess is you need a new chain. Along with counter and sprocket

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post #5 of 10 Old 12-31-2012, 01:27 AM
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Honestly, doesn't sound too bad to me - You gotta remember that when you have the back end of the bike blocked up, the chain drops farther and may hit the lower chain guard. Something it doesn't usually do when planted on the tires. Have you looked inside the swingarm area to see if you're hitting somewhere?

Do a real good clean and lube of the chain, then move the rear tire forward a bit. Repeat the sound test, see if it helps or not.

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post #6 of 10 Old 12-31-2012, 01:34 AM
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It is either the chain too tight( rotate the chain to find the tightest spot and adjust from there) or you have a link or two sticking and as that passes over the sprocket it clicks.

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post #7 of 10 Old 12-31-2012, 09:29 AM
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Quote:
Originally Posted by davehirt
or you have a link or two sticking and as that passes over the sprocket it clicks.
I had the same noise once.For me, It was caused by a combination of a bad chain and a front sprocket starting to wear. I could see the links and sprocket not mate easily as I ran it with my hand. Once I put a new chain on the sound went away.

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post #8 of 10 Old 12-31-2012, 04:50 PM Thread Starter
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Thanks guys
My local doctor (mechanic) assures me that its completely normal for a chain to sound like that when its beginning to wear
Looks like I"ll be doing the 17/44 conversion sooner than later!

Just as aerodynamic airplanes are simple and streamlined, a motorcycle--which manages to balance an engine and a seat between two wheels--has a mechanical integrity, with intertwining pipes, chains and springs, that is fascinating to behold - Peter Plagens
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post #9 of 10 Old 01-05-2013, 06:42 AM
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Mine was doing this it was the rear wheel bearings. I also heard the front sprocket can get worn where it slides onto the shaft. You can try to grease the sprocket in the middle of it and put it back on. I replaced my chain and sprockets only to find out it was the wheel bearings all along. Good luck

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post #10 of 10 Old 01-05-2013, 10:41 AM
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Ah, the joy of the smooth and quiet of a new chain and sprockets.
I don't know why I endure the growl to get every last mile out of the old stuff - but I do. I have a new set in the garage now - just waiting for the next big road trip or something.

Chain Wear: If you have 24,000 mi on the original set, just count your blessings and go shopping. Check for uneven stretch by measuring the slack in different parts of the chain. Going from too tight to too loose over and over can be a source of noise. Check for excessive heat - if the rollers are turning blue it's time for a new set. Chain failure can do a variety of things - all of them bad - all of them expensive.

Replacement: Tensile strength is king! If you put a chain rated less than 10,000# on a bike with this much torque it will not have a long life. Spend the extra 50 bucks on a beefy one. "Conversion" is fine for tweaking the ratio but unless it's a dedicated track bike where every ounce matters, Don't go down to 520. 530 generally has a higher tensile strength and more meat on the sprockets and will last longer.

Chain Tension: After installing the new stuff, get a baseline reference by aligning the countershaft, swingarm pivot and rear axle (you may have to pull the shock just this once) to find the tightest point and set about 1/2" of free play. Then connect the shock and drop the rear to full droop and measure the free play again. That will me your setting each time you adjust.
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