clunking noise when going forward. Noise back again!! - Honda Motorcycles - FireBlades.org
Honda FireBlade Discussion of the Honda CBR 900RR, Honda CBR 929RR, Honda CBR 954RR, and Honda CBR 1000RR Motorcycles.

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post #1 of 27 Old 06-25-2008, 8:55 AM Thread Starter
 
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clunking noise when going forward. Noise back again!!

Hi

Im new to the forums and have a small problem.

I have an 05 Repsol CBR1000RR (about 55,000 k's on it).

Have just noticed a clunking sound coming from near the front sprocket. I heard it while coasting along this morning. When I was coasting itr sounded like something had stuck onto the back wheel..."clunk clunk clunk" in rapid succession.

When I got home I put the rear wheel up on the stand and when you move the rear wheel in the direction of travel you can hear a clunking noise from the general direction of the front sprocket and you can see the chain "jumps" if you know what I mean.


Any ideas what I could do to find out what it is?

Cheers

Last edited by anthonyl; 06-28-2008 at 2:33 AM.
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post #2 of 27 Old 06-25-2008, 9:35 AM
 
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Re: clunking noise when going forward.

stop going forward.... Jokes aside - did you take off the covers (chain) and have a look to see if anything is stuck in the to start with. Then check out the front sprocket, it might be bent.
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post #3 of 27 Old 06-25-2008, 4:54 PM
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Re: clunking noise when going forward.

Chain too tight maybe?
Teeth missing off the countershaft sprocket?
Countershaft sprocket bolt come loose?

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post #4 of 27 Old 06-25-2008, 5:02 PM
 
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Re: clunking noise when going forward.

If the chain is "jumping", could it be that the chains links are worn and could be locking up and not turning freely around the sprokets?

Better take the covers off and check - it would be dangerous if the rear tyre locked up

"Second is the first of the losers..."
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post #5 of 27 Old 06-25-2008, 8:03 PM
 
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Re: clunking noise when going forward.

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Originally Posted by Twincam View Post
If the chain is "jumping", could it be that the chains links are worn and could be locking up and not turning freely around the sprokets?

Better take the covers off and check - it would be dangerous if the rear tyre locked up
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post #6 of 27 Old 06-26-2008, 3:59 AM Thread Starter
 
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Re: clunking noise when going forward.

Well I gave the chain a good cleaning with WD-40 and gave it a good loobing....noise seems to have gone now..... bloody chains.

My last bike was a Suzuki GSX1100G SHAFT DRIVE!!!
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post #7 of 27 Old 06-26-2008, 4:47 AM
 
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Re: clunking noise when going forward.

sounds like u need a new chain and sprockets
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post #8 of 27 Old 06-26-2008, 6:25 AM Thread Starter
 
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Re: clunking noise when going forward.

Had a friend look at them and he says that they were just dry...teeth seem fine.
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post #9 of 27 Old 06-26-2008, 6:26 AM
 
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Re: clunking noise when going forward.

When was the last time you changed your chain and sprokets? If they are worn out, I would spend some money and get myself a new set - if you wanted, you could change the number of teeth??

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post #10 of 27 Old 06-26-2008, 7:08 AM Thread Starter
 
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Re: clunking noise when going forward.

Quote:
Originally Posted by Twincam View Post
When was the last time you changed your chain and sprokets? If they are worn out, I would spend some money and get myself a new set - if you wanted, you could change the number of teeth??
I just picked up the bike on Saturday.
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post #11 of 27 Old 06-26-2008, 7:27 AM
 
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Re: clunking noise when going forward.

Is there any history telling you when it was last changed? Has the bike been serviced recently?

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post #12 of 27 Old 06-26-2008, 7:30 AM
 
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Re: clunking noise when going forward.

If that's the OE chain, it should have been replaced at half the k's you have now. You could have gotten away with just a new chain back then but like others have said, you may need sprockets now as well. A good x-ring replacement will go a long time if its taken care of.
Chains today are engineering marvels compared chains of the 70's but even they need attention. That chain is very dangerous in it's current state.
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post #13 of 27 Old 06-26-2008, 8:03 AM
 
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Re: clunking noise when going forward.

good opportunity to go 2 up on the rear or 1 down on the front, they are not quite in the meat of the power with standard gearing in the twisty stuff......
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post #14 of 27 Old 06-28-2008, 1:58 AM Thread Starter
 
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Re: clunking noise when going forward.

Well I am sorry to report the damn noise is back again. I have only done about 100 k's if that since cleaning and lubing the chain.

I am taking it back to the dealers on Monday for them to check it out.

Seems to happen mainly when the bike is hot and up to running temperature. When it cools down it stops. Only had it a week...thank god its under warranty.

It sounds like something catching somewhere.

Is it possible to remove the front sprocket cover? So I can try and see what under there? There is a clutch thingy attached to it can I just remove that or will there be oil spilling everywhere
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post #15 of 27 Old 06-28-2008, 3:18 AM
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Re: clunking noise when going forward. Noise back again!!

It should be a sealed unit as long as you don't undo the banjo bolts or bleed screws.
I'd definately be replacing the chain and sprockets I think.
Did you check the chain adjustment while you were cleaning and lubing it?

"I won't forget that ride for a while. Maybe you're right. Living fast might be worth the final crash. Maybe that's the secret you fliers know." - Flight of the Intruder
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