Strange R1250GS engine noise. - Page 13 - BMW R1200GS Forum : R1200 GS Forums
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post #121 of 146 (permalink) Old 21-Jul-2019, 07:39 PM (027)
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Just got my 1250 and when I took it in for the 600 service I told the guys I was hearing a tapping noise. Was told it's the water pump and that it has a u joint that can make a tapping type of sound when accelerating.
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post #122 of 146 (permalink) Old 22-Jul-2019, 12:27 AM (227) Thread Starter
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Originally Posted by bar108 View Post
Just got my 1250 and when I took it in for the 600 service I told the guys I was hearing a tapping noise. Was told it's the water pump and that it has a u joint that can make a tapping type of sound when accelerating.
I do like April Fool's jokes in July!

The last one got me but this one didn't.

LOL.

Last edited by Maturerider; 22-Jul-2019 at 12:32 AM (230).
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post #123 of 146 (permalink) Old 22-Jul-2019, 05:52 AM (452)
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How would that [active noise cancellation] work????
The tech is pretty straightforward: a couple microphones in the airbox pick up the sounds coming from the throttle bodies, a digital signal processor chip creates an opposite waveform which it sends to one or more small speakers in the airbox. Opposite sound waves add up to silence.

Such technology is readily available for ear protection--you may even own a set of noise-canceling headphones for listening to music at a reasonable volume aboard an airplane. My local hardware store sells them for job-site use. Active noise canceling mufflers have been proposed and prototyped for going on twenty years now (so far it's still cheaper to use passive mufflers). So it's not an unproven technology, and it would solve the problem.

There's also passive noise cancellation, in the form of an airbox assembly with internal baffles and reservoirs that sets up an opposite resonance at the offending engine speed/air flow combinations. Not a new technology, either--my 1996 and 1999 Buells both had the "Helmholtz resonator" airbox, a plastic shoebox containing the air filter and an intake snorkel with carefully sized/placed openings that caused the air inside the box (but outside the snorkel) to resonate opposite the air going into the engine. Wouldn't be terribly surprised if sometime in 2020 we see a much more complex airbox, with some internal tubes and such, appearing on the 1250s.

Whizzy brakes, no FD drain plug, what's not to like?
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post #124 of 146 (permalink) Old 23-Jul-2019, 12:10 AM (215)
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I fear BMW is not sufficiently interested in the matter of this noise to invest in such an active noise cancellation system.
After all relatively few customers are complaining about it and even fewer wonít buy the GS because of it.
Many people have learnt that the watercooled GS makes a lot of mechanical noise and therefor think the resonance noise is part of it...
We know differently but even my own Belgian dealer who so far was sympathetic lost interest and clearly cannot understand why I am making such a fuss about it.

Last edited by Slijkmoto; 23-Jul-2019 at 12:25 AM (226).
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post #125 of 146 (permalink) Old 26-Jul-2019, 08:49 AM (575)
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Same noise

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Iím now hearing what I think youíre hearing. Aside from the piercing whine that funnels up from the front, which I try hard to ignore, Iíve started hearing rat,tat, tat, tat, in quick succession rattle under acceleration which seems to come from the right side. This with a full face helmet and foam ear plugs.
Hi i have the same noise on my Bike and getting worse 4000 miles on her now. going to take her back again next week see what they say
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post #126 of 146 (permalink) Old 26-Jul-2019, 08:52 AM (578)
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Same noise

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Originally Posted by Maturerider View Post
Dear Slijkmoto,

You describe exactly the same noise that I am experiencing with my 1250. I feel we are the only two on this forum that are having this issue.

My dealer acknowledges that there is a noise and promised to make enquiries with BMW. Unsurprisingly nothing has come of it.

If you had to make a educated guess what do you think is causing this noise? Do you think it might become terminal? As an UNeducated guess I would say a small end bearing but what do I know.

It's an annoying noise which I hear EVERYTIME I go for a ride.
i have the same as well
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post #127 of 146 (permalink) Old 26-Jul-2019, 12:07 PM (713)
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The problem is, I am trying VERY hard to ignore the noise and to convince myself it is conceptual and "harmless"... especially since the GS is otherwise a magnificent bike to ride.

But... I do not succeed.. and my riding fun diminishes everytime I mount my GS... up to the point that I cannot be bothered very much anymore to make a trip... I never thought this would be possible...
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post #128 of 146 (permalink) Old 29-Jul-2019, 09:25 AM (601)
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Originally Posted by Slijkmoto View Post
The problem is, I am trying VERY hard to ignore the noise and to convince myself it is conceptual and "harmless"... especially since the GS is otherwise a magnificent bike to ride.

But... I do not succeed.. and my riding fun diminishes everytime I mount my GS... up to the point that I cannot be bothered very much anymore to make a trip... I never thought this would be possible... <img src="https://www.r1200gs.info/forum/images/R1200GS_info_2015/smilies/tango_face_sad.png" border="0" alt="" title="Frown" class="inlineimg" />
In the same boat. Was soo looking forward to liv’n the dream and packing away some long trips on the 1250. But now even in my short daily commute I find myself opting for the train. Unthinkable 6-months ago.

Hard to switch brands after a 30 year love affair with the GS, but as my other love aptly puts, it ain’t gunna get quieter by not riding. See a 2020, 1290 on the horizon.
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post #129 of 146 (permalink) Old 29-Jul-2019, 10:03 AM (627) Thread Starter
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Originally Posted by Gdoss View Post
In the same boat. Was soo looking forward to livín the dream and packing away some long trips on the 1250. But now even in my short daily commute I find myself opting for the train. Unthinkable 6-months ago.

Hard to switch brands after a 30 year love affair with the GS, but as my other love aptly puts, it ainít gunna get quieter by not riding. See a 2020, 1290 on the horizon.
I'm coming to the conclusion that some on this forum have a louder 'strange R1250GS engine noise' than I'm experiencing.

It's still there but when giving it the beans, riding into a headwind or having the screen in the lowest position in an attempt to stay cool in the current hot weather it's possible not to notice it!
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post #130 of 146 (permalink) Old 29-Jul-2019, 10:10 AM (632) Thread Starter
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Originally Posted by Gdoss View Post
In the same boat. Was soo looking forward to livín the dream and packing away some long trips on the 1250. But now even in my short daily commute I find myself opting for the train. Unthinkable 6-months ago.

Hard to switch brands after a 30 year love affair with the GS, but as my other love aptly puts, it ainít gunna get quieter by not riding. See a 2020, 1290 on the horizon.
I'm coming to the conclusion that some on this forum have a louder 'strange R1250GS engine noise' than I'm experiencing.

It's still there but when giving it the beans, riding into a headwind or having the screen in the lowest position in an attempt to stay cool in the current hot weather it's possible not to notice it!
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