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Old June 30th, 2012, 08:22 AM   #1
blink
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Weird knocking noise...

When I'm riding, it's mostly felt around/on my left foot peg. It's like a rapid knocking and i can feel it,

any ideas?

Looked at the chain its not too loose.

It happens MORE so when I am in lets say a higher speed and low rpms...6 gear and 70km.h



or 5th gear and 50km.h


Been getting worst but I can't put my finger on it
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Old June 30th, 2012, 08:35 AM   #2
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Does it vary with engine rpm or with road speed? Tight link? Picked up a nail? Perhaps it's opportunity.
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Old June 30th, 2012, 08:38 AM   #3
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Eliminate the basics first.

Chain to to loose (check)
Chain to tight?
Chain worn out/have kinks that will not straighten out. (miles on chain?)
Front sprocket worn out/loose?
Rear sprocket worn out/loose?
All engine mount bolts tight?
All axle bolts tight?
Swing arm bolt loose?

That would be a good start.
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Old June 30th, 2012, 08:39 AM   #4
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Oh, and with all noises related to final drive.

Put it up on stands in N and spin it by hand starting real slow and increase speed to possibly hear the noise.
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Old June 30th, 2012, 09:00 AM   #5
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Focus on the front sprocket, chain link and chain, keeping the rear wheel up.

You can also have some helper see if either the engine of the swingarm move when you sit on the bike and force the front wheel against a wall in first + clutch.
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Old June 30th, 2012, 09:06 AM   #6
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Old July 3rd, 2012, 12:24 PM   #7
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Quote:
Originally Posted by blink View Post
When I'm riding, it's mostly felt around/on my left foot peg. It's like a rapid knocking and i can feel it,

any ideas?

Looked at the chain its not too loose.

It happens MORE so when I am in lets say a higher speed and low rpms...6 gear and 70km.h



or 5th gear and 50km.h


Been getting worst but I can't put my finger on it
all signs point to chain/sprocket
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