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Bad Vibrations 4500-6000rpm

Posted: 28 May 2012 09:54
by rrey
Hi there!.

I have my Granpasso for only a few weeks (second hand). I had a Corsaro for a couple of years before and was very happy with it. Now, moving to something more touring oriented, I find that this bike (Granpasso) vibrates badly from 4.5 up to 6KRPm. This makes the bike really unconfortable!.

Engine seems to be running correctly : power is correct, Air/Fuel ratios as well, I fitted new spark plugs, etc.. but nothing changes.

The Corsaro didn“t vibrate so badly!. Have you experienced anything similar??. Any suggestion or idea?

Thanks!

Re: Bad Vibrations 4500-6000rpm

Posted: 28 May 2012 12:53
by nfitz
Can you describe the vibration better? - I ran my GP to Sneterton and back 500miles on Sunday and I also notice thet there seems to be a vibration in the 4-6,000 region that feels as if the bike is on "shell grip" surface. I checked when on a smooth surface and the vibration is still there and so it must be form the engine.

Re: Bad Vibrations 4500-6000rpm

Posted: 28 May 2012 13:12
by rrey
Hi Nfitz.

vibration is mostly noticeable at the footpegs. They are bad at that range, so much my girlfriend lifts up her feet !!. I can feel it as well badly.
It feels like a balancing vibration because it dissappears below and above those limits (4.5 to 6).

That is a very useful rpm rnage so it is not only unconfortable but annoying!

Regards