Tyres, Brakes and Suspension » Whining noise, possibly suspension related?

As I'm getting myself familiar with the RS1200RS I hope I don't ask too many silly questions..

When I turn the bike on, but before starting the engine there's a constant high pitched sound. It's the sort of sound one might expect to hear as the bike goes about it's startup business, but it never stops. I'm not sure if it continues after I start the engine - if it does the sound gets drowned out.

Initially thought it was the fuel pump, but the pitch changes slightly when I switch between road and dynamic suspension setting, so possibly something to do with the that?

See YouTube vid to see what I mean..

https://youtu.be/bUnxkfNcYMc

Zitat von stiebs im Beitrag #1

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As I'm getting myself familiar with the RS1200RS I hope I don't ask too many silly questions..

When I turn the bike on, but before starting the engine there's a constant high pitched sound. It's the sort of sound one might expect to hear as the bike goes about it's startup business, but it never stops. I'm not sure if it continues after I start the engine - if it does the sound gets drowned out.

Initially thought it was the fuel pump, but the pitch changes slightly when I switch between road and dynamic suspension setting, so possibly something to do with the that?

See YouTube vid to see what I mean..

https://youtu.be/bUnxkfNcYMc

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[quote=Bravo|p9311Mine does it too,always has. Nothing to worry about.[/quote]

And add in a couple of high pitched "squeaks" that mine does most of the time- personality. The whine might be the bank angle gyro running at speed.

Frank

I couldn't hear any noise on that video, but my guess is that the whining is the fuel pump working.

Zitat von Richard230 im Beitrag #4

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I couldn't hear any noise on that video, but my guess is that the whining is the fuel pump working.

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I'm with Wessie, its the pump in the brake system, remote braking motor that is controlled by the ABS.

I can hear it in the ABS pump on mine, not loud but always there when ignition on.


Ged

Zitat von wessie im Beitrag #7

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I don't suppose you can hear those sirens they use in shopping centers to stop young people hanging around either

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Thanks for the responses.. as annoying as it is when I'm sitting on the bike in the garage playing with the dashboard settings, I guess that's only a short term thing and beer long there won't be much need to have the bike electronics turned on without the engine roaring :)

Good to know it's expected behaviour and not just something going wrong with my bike.

Zitat von wessie im Beitrag #7

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Zitat von Richard230 im Beitrag #4

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I couldn't hear any noise on that video, but my guess is that the whining is the fuel pump working.

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you can tune the noise of a stepper motor by altering waveforms - I suspect BMW chose one with a high pitch as they thought few of their owners would be able to hear the noise

they misjudged the RS demographic

Richard, I don't suppose you can hear those sirens they use in shopping centres to stop young people hanging around either

I SAID, "RICHARD ...

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I can hear the exhaust flapper servo cycling. I can sometimes hear the fuel pump. It is possible the braking system also has some sound input. Whichever it is, it is nothing to worry about.

I have never been bothered by the high pitch noise when powering on. I do notice it but once the engine is running then, well, you know.

Interesting to hear the pitch change based on riding mode. As others have said I don’t think this is something to be concerned with.

When I saw “whining noise” in the title I was thinking more along the lines of what I do almost every time I walk past the bike to get into the car to drive off to work. If you want to hear some whining for comparison...

I wish it was warm enough for me to deal all these annoyances. As is, I just have accept that my life will be diminished by these problems when it's warm enough to ride.

I can sometimes detect a whining noise when my wife is pillion...

Yes, yes, someone had to go there, and what the hell, it was me.

Cheers

Paul B.