5000 rev rattle....

phillcbx · Post by **phillcbx** » Sat May 12, 2012 10:16 pm

Hi all finally got my nc29 back on the road and although goes well i have noticed a rattle exactly at 5000 revs you go past the 5k and it goes but there every time, anyone had this before, i have just had the bike set up on the dyno and its spot on, any help would be great,
Regards Phill

Pleiades · Post by **Pleiades** » Sun May 13, 2012 4:25 am

First the obvious - is anything loose? I had a vibration at about 8K on my GSX-R 600, thought the worst, kicking myself for buying a bike second hand, etc. Took it to the track and took the mirrors off, and when I put them back on the rattle was gone. It was a few fasteners loose on the screen that was causing the vibration.

scottser32 · Post by **scottser32** » Mon May 14, 2012 12:01 am

been experiencing somethin like this meself, had the exhaust off just today and all but nothin was in there its gettin one me tits gonna take it to a pro, where does yours sound like its coming from

Post by **CMSMJ1** » Mon May 14, 2012 9:35 am

If it is a resonant rattle - comes and goes - then it surely is something loose and you just need to be methodical and check everything for tightness.

phillcbx · Post by **phillcbx** » Wed May 23, 2012 11:48 pm

hi all, still trying to find this bleedin rattle change cans over and still there, so panels off next and track it that way,
Thanks again
Regards Phill

scottser32 · Post by **scottser32** » Fri May 25, 2012 12:32 am

me too my mechanic seems to think its badly fit joints but the bikes whit him and he's having a look ill keep ya posted i dont have much hope hes the second one to look at it

phillcbx · Post by **phillcbx** » Fri May 25, 2012 9:15 am

hello mate , yep still got mine there 5000 to 5500 like a clock, i think it mat be the carbs somthing just rattling and they were just set up by a bike shop he said it could be exhaust headers blowing just a bit so going to look at that next,
good luck
regards Phill

Post by **The Novice** » Fri May 25, 2012 9:29 am

you can sometimes get a rattle or resonance if you have stainless headers - dont ask me why - i recall reading it in another post.

scottser32 · Post by **scottser32** » Fri May 25, 2012 10:53 am

mines not exactly at 5000 revs it just comes and goes at different revs but its very apparent when ya give a quick twist of the throttle from idle, it really does sound like something in the headers but theres nothing there. i do have the stainless headers so it could be that ill try dig that thread out if i can, is it fixable

scottser32 · Post by **scottser32** » Fri May 25, 2012 8:14 pm

well just got my bike back and the culprate has been found this lovely chunk of metal was inside the headers, the mechanic said its a balancer and woulda been tacked in there and it came loose he had t cut the header and re-weld it back up to get it out, the bike is spot on now :)

5000 rev rattle....

5000 rev rattle....

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Re: 5000 rev rattle....

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