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Old 01-21-2013, 04:49 AM   #1
Hendo66 OP
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5th gear drone?

I have a 2011 1200 GS with 6000k's and have a resonating drone that only comes in 5th gear, 4 & 6th seem fine so it's not tyre, road related or engine from what I can gather. Am going to report to dealer but any clues would be helpful.

Thanks in advance
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Old 01-21-2013, 06:09 AM   #2
The Evil Twin
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If it is the same thing, mine actually does it in 6th gear
No kidding. It started halfway through my trip to Canada. It is like a "waah waah waah" at 1 second intervals. However, I dropped a couple PSI and went for a "spirited' ride several weeks ago. It has gone away best I can tell. My assumption is that it actually is the tires. Combined with the engine and drive noise, it just hit that resonant frequency.
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Old 01-21-2013, 06:16 AM   #3
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Cool2

The old Maxwell Smart "too much air in the tyre trick eh!" We'll I will certainly give that a try, many thanks.
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Old 01-21-2013, 12:19 PM   #4
feldjäger
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In 5th gear at 3000 RPM, mine sounds like a twin engine prop at altitude. I don't think its a problem, just a frequency of the engine letting me know how much it is enjoying being on the road
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Old 01-21-2013, 01:13 PM   #5
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Yep. Same thing here. I've got 30,000 Kms on the bike and it hums and drones in 5th like a champ. It did not do it when it was new. Don't bother asking your BMW dealer as they will give you the old "they all do that" spiel. I just go to 6th gear if it starts annoying me. It's a great drivetrain otherwise.
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Old 01-21-2013, 01:47 PM   #6
def
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Quote:
Originally Posted by Hendo66 View Post
I have a 2011 1200 GS with 6000k's and have a resonating drone that only comes in 5th gear, 4 & 6th seem fine so it's not tyre, road related or engine from what I can gather. Am going to report to dealer but any clues would be helpful.

Thanks in advance
Change transmission oil.
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Old 01-21-2013, 03:21 PM   #7
Ayrshire Bull
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when the Evil Twin talks about his bike making a 'waah, waah, waah ....' noise - I can relate.

Mine does too.

Nothing that has ever alarmed me .... and not all the time - but it's interesting to hear that others have the same thing going on.

I think I'll follow Def's advice - and run some fresh tranny oil into the old pig. See if that quietens her down any.
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Old 01-21-2013, 05:19 PM   #8
DRONE
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You hear a drone? My wife is always complaining about the Drone she has to listen to.
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Old 01-21-2013, 05:26 PM   #9
bobbybob
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I'll reinforce what the others say: my '10 GS does it in 5th gear but not 6th. If I have noisy tires, it makes it even worse (resonates), but still does it with quiet tires too.
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Old 01-21-2013, 07:19 PM   #10
DELTATANGO
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Constructive Interference

When sound waves collide they can create a third wave. It's also called a beat note.
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Old 01-21-2013, 07:44 PM   #11
kevin g
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Me too, me too.

Mine does it as well, 2011 GSA. It seemed to start when my Anakee 2 rear got about half worn. I have 18K miles on it and need to replace the rear tire soon. It changes with lean angle so I chalk it up to tire noise and the rest of the drive train resonating. There was no hint of it with the Tourance EXPs that were the original tires.
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Old 01-22-2013, 04:15 AM   #12
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Thanks guys, your input makes me feel that it's kind of normal and yes I also throw it into 4th or 6th if it gets on my goat.
I also run Anakee 2's like Kevin G so let me know if anyone else runs these & has the same issue,is it related and do they contribute to the drone???? I will still report while still under warranty just so it's noted if it develops further.

P.s. it does sound like the wife on a Sunday morning.....mow the lawn....fix the tap.....buy new kitchen.....etc. goes away when I accelerate
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Old 01-22-2013, 04:24 AM   #13
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Both of my GS's do it. 2006 GS and 2012 GSA. Both have Anakee II's. I thought the 06 GS was developing final drive issues or something until I rode the newer GSA on a trip and heard the same thing. I do think the Anakees have something to do with it.
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Old 01-22-2013, 09:52 AM   #14
qman8
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Mine did it in 2nd gear at about 25mph when I had a Hidenau k76 tire on rear. Never experienced it otherwise. NOwhere near as annoying as the vibration this bike makes at MOST RPMs!
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Old 01-22-2013, 01:28 PM   #15
zorba75482
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First BMW I bought was my 1100GS and immeditaley noticed the drone in 5th gear. Being the paranoid type I stripped the final drive enough to examine the bearing, found no issues and put it back together. It's now been droning for another 50k with no issues. Changed a drive shaft 5k ago but drone still there so it's not that. Just some type of harmonic vibration I guess.
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