Strange noise at high RPM
 

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http://www.youtube.com/watch?v=FXD7b...ature=youtu.be

Pretty sure it came from engine, not fairing or transmission Chain. and it's not the cctl, cuz i already put a new one but the noise still there. do you guys have the same problem ? anyone fixxed it ?

thanks for the kindly reply.

any suggestion ?

I listened to the video and did not hear the noise you mention.

The noise is not too loud.
you might need a better speaker or earphone to hear clearly
my room speaker sounds clearly, but office cheap speaker doesn't hear a bit.

the noise sounds like metal to metal vibration noise, only happen at 9rpm～12rpm, the performance still fine nothing unusual.

I have remake the video,, plz check again. many thanks !

http://www.youtube.com/watch?v=FXD7b6LkzLM&feature=youtu.be

Sounds like it increased with added RPMs. It could be the top end bits.

So this is not normal right ? you mean top of the engine like vale or something?

Its only a guess but yes, I would say you have bits that are loose under the valve cover.

I couldn't hear anything really wrong. I think if you got a better video of the bike going thru each gear. Like getting on an on ramp and run thru each gear, to almost red line. Having the bike go thru each gear is the only way you can really find where that problem actually is. Short shifting can cause small problems like little weird noises and feeling like there is a problem. When I first hoped on a 600, I did that and thought the bike wasn't running right.
But if it is a metal something rattling, then rattling noise will increase as the bike goes faster.

When you do this, pay attention to RPMs, and feel/ listen to what the bike is doing.
And get it on camera again.

You mean the valve clearance or somewhere screw got loosed right? my friend said that if the clearance fail, the noise wont happened at high rpm, it shall make the noise begin from low rpm.

anyone have other opinions ?