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FZS600 Fazer / Re: Grinding noise/feeling around 6000rpm
« on: 18 February 2019, 04:27:14 pm »
Hi Uppo,
I had this investigated by the Yamaha dealer that I bought my bike from. They couldn't find anything wrong.
I've learned to live with it and now think that it is caused by a resonance at those revs.
I think the resonance just happens to be at that rev-range.
Think about when an old double-decker bus is shaking itself to pieces when idling at the traffic lights. That's because the engine idling frequency causes resonant vibration in the rest of the bus... when the revs go up it dies down.
I think this is the same for the Fazer.
Nothing bad has happened to my bike as a result of it. I've noticed that using Castrol racing oil and always keeping it at a good level helps so that it's not as easy to feel.
I've been riding mine for 6 years now and it's been solid.
Good luck.
I had this investigated by the Yamaha dealer that I bought my bike from. They couldn't find anything wrong.
I've learned to live with it and now think that it is caused by a resonance at those revs.
I think the resonance just happens to be at that rev-range.
Think about when an old double-decker bus is shaking itself to pieces when idling at the traffic lights. That's because the engine idling frequency causes resonant vibration in the rest of the bus... when the revs go up it dies down.
I think this is the same for the Fazer.
Nothing bad has happened to my bike as a result of it. I've noticed that using Castrol racing oil and always keeping it at a good level helps so that it's not as easy to feel.
I've been riding mine for 6 years now and it's been solid.
Good luck.