Question about 2004 BMW R 1150 RT (ABS)

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Loud Intermittent Droaning Noise

I was riding my 04' RT1150 yesterday & heard a loud droaning/whining noise when I accelerated over 5,000 rpm, I coasted to a stop downshifting still hearing the noise. When I came to a stop the noise went away. I set off again & intentially reved high over a few gear changes and the noise cam back, again coasting to a stop with the clutch in & again when I came to a stop the noise went away. The noise does not increase with the revs & does not seem to have any effect on the motor. I rode for another hour or so & when entering an on ramp & accelerating hard the noise came back & I noticed the speedo wavering up at 110-120 mph whilst going around 80mph. Again the noise went away coming to a stop at the off ramp. I assumed this was happening in the higher revs until I went over a rail crossing at 25mph & the noise came back again, then at a stop light went away again. Can you please help with any ideas as to what this problem is?

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  • tmwilkinson2 Nov 30, 2008

    No the noise does not go away when the clutch is in, it does not sound like a lubrication issue. I was wondering if it has anything to do with the alternator due to the speedo going haywire! and it sounds like it is coming from under the tank area. Thanks for your reply.

  • tmwilkinson2 Dec 08, 2008

    Thanks for your reply, I read the same article. Paul Glaves had kindly replied & suggested the speedo cable. The rear drive is all ok.

  • tmwilkinson2 Dec 10, 2008

    Thanks for your help, looks like this is fixed.

  • Rob Selvy
    Rob Selvy May 11, 2010

    Can you please tell me if the noise seems to go away when the clutch is in? There is a bearing in the clutch mechanism that can possibly make this noise. Is the noise a sort of screeching, growling noise like perhaps no lubrication somewhere?

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Rear axle to ring gear side bearing is loose due to weak preload. might be able to locktight is its not to late. was in bmwmoa memeber mag this month december08

Posted on Dec 08, 2008

  • fredcause
    fredcause Dec 09, 2008

    so lube the cable. why leave this help message open for others to answer.

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