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rattle / Knocking noise at low revs

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ColinK98
Crazy Courier



Joined: 27 Jun 2016
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PostPosted: 15:35 - 19 Jan 2018    Post subject: rattle / Knocking noise at low revs Reply with quote

i'm going to give the bike a good look at this weekend.

there is a bit of noise from the front sprocket area when pull away in first and also if i'm off the gas in a higher gear and then get back on the gas.
it only happens at low revs (1-3k) and isnt apparent at higher revs.

I regularly oil the chain but i have not adjusted the chain slack for a while.

i will pop the chain off and check for any play on the front/rear sprockets and also have a look at the chain.

anything else to keep an eye out for ?

the bike is a 2004 CBF600

Cheers.
C.
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fatjames
World Chat Champion



Joined: 09 Jul 2011
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PostPosted: 17:10 - 19 Jan 2018    Post subject: Reply with quote

How slack is the chain?
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ColinK98
Crazy Courier



Joined: 27 Jun 2016
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PostPosted: 19:23 - 19 Jan 2018    Post subject: Reply with quote

fatjames wrote:
How slack is the chain?

that is something I'm going to check tomorrow.

However when getting ready to leave work and i noticed this
https://i.imgur.com/dUbOwUA.jpg

the center stand is actually making contact with the chain.
when i move it off the side stand there is a gap of half an inch between the center stand and the chain.

while the chain may be a little slack i cant help but suspect there sound be more than half an inch clearance.

i will correctly tension the chain tomorrow and also see if there should be a mechanical stop on the center stand.
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Chris45
Nitrous Nuisance



Joined: 23 Oct 2016
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PostPosted: 21:26 - 19 Jan 2018    Post subject: Reply with quote

Please tell me that is not green mould on the links Sad
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Pigeon
World Chat Champion



Joined: 27 Sep 2012
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PostPosted: 22:57 - 19 Jan 2018    Post subject: Reply with quote

Guessing the chain may be skipping/flexing due to stiff links possibly (with a loose / tight spot).
And hitting the centre stand.


Doovie, thinking of you buddy.
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Current: 2014 GSXR-1000 L5 + 2013 Triumph Street Triple + 1998 Honda XR250R -- Prior: 1990 Suzuki TS50X, 1988 GP100, 1998 Honda CG125, 2011 AJS JS125-E2 (Jianshe JS125-6A), 2000 Suzuki SV650S.
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ColinK98
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Joined: 27 Jun 2016
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PostPosted: 08:48 - 20 Jan 2018    Post subject: Reply with quote

Chris45 wrote:
Please tell me that is not green mould on the links Sad


i use organic chain oil.
Very Happy
____________________
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ride sensible and not like an idiot and you wont get 6 points in one week.
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ColinK98
Crazy Courier



Joined: 27 Jun 2016
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PostPosted: 13:18 - 21 Jan 2018    Post subject: Reply with quote

fatjames wrote:
How slack is the chain?


With the bike on the side stand the slack was 40mm.
the manual says 30-40mm so i have adjusted it closer to 30mm.

the rubber stopper on the center stand was all but fallen off.
i have replaced it with a bolt and a couple of nuts so it can be adjusted.

Let see how it is on the way to work tomorrow.
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ride sensible and not like an idiot and you wont get 6 points in one week.
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Courier265
Traffic Copper



Joined: 01 Oct 2017
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PostPosted: 15:30 - 21 Jan 2018    Post subject: Reply with quote

Losing the stopper makes a lot of difference because the center stand is too high unless you are sitting on the bike.

I have a CBF 500 and I lost my stopper, don't bother with an original part, make your own, I found a bung, made a hole in it and bolted it on.
However even with a locknut it managed to loosen so if you make your own like I did, check on it now and again.

I would of said something earlier but I wasn't aware the CBF600 had a stopper after checking the microfiche
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ColinK98
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Joined: 27 Jun 2016
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PostPosted: 09:49 - 23 Jan 2018    Post subject: Reply with quote

Courier265 wrote:
Losing the stopper makes a lot of difference because the center stand is too high unless you are sitting on the bike.

I have a CBF 500 and I lost my stopper, don't bother with an original part, make your own, I found a bung, made a hole in it and bolted it on.
However even with a locknut it managed to loosen so if you make your own like I did, check on it now and again.

I would of said something earlier but I wasn't aware the CBF600 had a stopper after checking the microfiche


i make you right....
replaced the failed stopper with a bolt and two nylock nuts.
i will check it at the weekend to make sure its secure.

its a lot less noisy now...so job was jobbed.
____________________
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Ride it like you stole it.
ride sensible and not like an idiot and you wont get 6 points in one week.
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