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Author Topic: BMW 1200GS Swing Arm  (Read 5834 times)

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Offline nielvn

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Re: BMW 1200GS Swing Arm
« Reply #20 on: July 02, 2014, 09:15:16 pm »
True, please consider two 2012, one a GS, the other a GSA on the same piece of road breaking at the Same spot, GPS log show speeds of 50km/h when the breakage happened. Yes the bike became a "Bobber", but we rode them out of the mountains by using a tow strap and crating suspension between the rear FD and centre stand, centre stand was bent badly, but at least we road out of the mountains to memel where roadside assistance could assist........
 

Offline lecap

Re: BMW 1200GS Swing Arm
« Reply #21 on: July 03, 2014, 09:56:23 am »
As a rule of thumb:

A 10cm tall kerb or similar obstacle will compress your suspension at something around half the speed of travel of the vehicle.
Means when you do 50km/h roughly equal to 14m/s your suspension will compress at 7m/s

As a wild guess this will still result in an (attempted) compression speed of more than 2m/s on the shocks piston rod.

You do this a few times and something will break.
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Offline Veldbrand

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Re: BMW 1200GS Swing Arm
« Reply #22 on: July 21, 2014, 09:34:17 pm »
For those of you with this problem check this page out and maybe add your complaints too: https://www.facebook.com/groups/493793364089078/


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Offline Kameel

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Re: BMW 1200GS Swing Arm
« Reply #23 on: July 22, 2014, 12:12:18 pm »
For those of you with this problem check this page out and maybe add your complaints too: https://www.facebook.com/groups/493793364089078/
:thumleft:

2004 F650 GS Dakar (The X); 2004 BMW R1200 GS (GeelKameel); 2008 F650GS Twin (The X); 2008 BMW R1200GS (Silwervalk vir Biker Chick); 2009 BMW R1200GS (Pappa Smurf);
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Offline lecap

Re: BMW 1200GS Swing Arm
« Reply #24 on: July 23, 2014, 08:19:33 am »
Which part of "exceeding the design envelope" is difficult to understand ???

Do you need a Facebook group to explain this ???
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Offline Garfield

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Re: BMW 1200GS Swing Arm
« Reply #25 on: July 23, 2014, 08:23:35 am »
Which part of "exceeding the design envelope" is difficult to understand ???

True, but...

If the same model bike had a stronger swing arm up to a certain year and it was then made weaker i.e. cheaper and prospective customers not informed, the design envelope has changed but user expectations are still the same.

Not saying this is the case but on the face of it this does seem to be so for certain 2012 models.
 

Offline Veldbrand

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Re: BMW 1200GS Swing Arm
« Reply #26 on: July 23, 2014, 08:28:38 am »
Which part of sharing your experience and commiserating with other folk whove had the same problem in order to maybe get BMW to admit and do something about it dont you get?
Hell, if I was in that boat Id use any and every possible channel to draw attention to the potential lethal stuffup.


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Offline lecap

Re: BMW 1200GS Swing Arm
« Reply #27 on: July 24, 2014, 08:07:10 am »
Which part of sharing your experience and commiserating with other folk who’ve had the same problem in order to maybe get BMW to admit and do something about it don’t you get?
Hell, if I was in that boat I’d use any and every possible channel to draw attention to the potential lethal stuffup.


You can break an anvil. You just have to get the drop height and the hardness of the landing surface right.
Does that mean the design of the anvil is flawed?
If you get it right and break the anvil are you going to start a Facebook group and moan at the anvil factory to get them to improve the design or use better material?

Will the anvil factory listen?
No!

Because generations of blacksmiths have used the anvils as intended for aeons without breaking them.


Do you notice something?
The important bit is "as intended".

The next important step is to realise that the translation of the marketing mumbo jumbo "ber - Enduro" into plain English is: "Touring motorcycle with some dirt road capability" or in modern 21st century English "soft roader".
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Offline Garfield

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Re: BMW 1200GS Swing Arm
« Reply #28 on: July 24, 2014, 08:17:07 am »
Have not seen a broken anvil yet, is there maybe a facebook page I can go look?

So if the anvil company sold their enduro anvil for 5 years, and in year 6 they change the material or make certain key parts of the enduro anvil weaker but tell nobody about it and still sell it as exactly the same model, and these anvils start breaking blacksmiths should just shut up and accept it?

I don't think so.
« Last Edit: July 24, 2014, 08:23:13 am by Garfield »
 

Offline nielvn

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Re: BMW 1200GS Swing Arm
« Reply #29 on: July 27, 2014, 05:51:02 pm »
Pre 2012 no problem 2012, 2013 breaks, check the swingarm shock mounting, it is clearly different. If it was only one or to bikes, no problem, Iknow of a few, mine included all 2012/2013 models.The concerning factor to consider is, what happens if a rider gets injured or worse is involved in a fatal accident due to this issue?
 

Offline lecap

Re: BMW 1200GS Swing Arm
« Reply #30 on: July 28, 2014, 11:43:30 pm »
Pre 2012 no problem 2012, 2013 breaks, check the swingarm shock mounting, it is clearly different. If it was only one or to bikes, no problem, Iknow of a few, mine included all 2012/2013 models.The concerning factor to consider is, what happens if a rider gets injured or worse is involved in a fatal accident due to this issue?
Then BMW will tell you ??? or they will pay you or your children or lawyers until you / they shut up.
"If you think it's expensive to hire a professional to do the job, wait until you hire an amateur." (Red Adair)
 

Offline Goose

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Re: BMW 1200GS Swing Arm
« Reply #31 on: August 04, 2014, 02:01:43 pm »
seems that's the same break that Shaun (Bring it On) had on his GS after hitting a "donga".............
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Offline Thorpheus

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Re: BMW 1200GS Swing Arm
« Reply #32 on: September 28, 2015, 11:10:35 am »
Just finished a trip and same happened to me, hitting a pot hole on a smooth gravel road
 

Offline Fudmucker

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Re: BMW 1200GS Swing Arm
« Reply #33 on: September 28, 2015, 01:36:08 pm »
Just for interest:
What model year is your bike, Thorpheus?
1200GS or GSA?
Working load on the bike at the time - kg?
Speed at the time?
ESA setting?
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Offline TheBear

Re: BMW 1200GS Swing Arm
« Reply #34 on: September 29, 2015, 01:26:58 pm »
Common problem? I would have to say no - based on the number of GS/A's around vs the frequency of the breakage.

It does however happen - and probably more in SA than Europe because we use the bikes off-tar, and possibly harder than our European designers? Can't speak for the USA, but they probably have a health & safety warning that we ignored......

Agreed.  I don't think it a common problem either.  We see it more here because, in general, they are ridden extremely hard, over terrible terrain.
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Offline ClimbingTurtle

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Re: BMW 1200GS Swing Arm
« Reply #35 on: September 29, 2015, 02:55:12 pm »
I reckon mine should have broken, or may even break at some point....

I have a inner box that under extreme compression, has twice connected with the swingarm - where the arrows show.....

No cracks that I can see thus far, luckily....

And I have stopped chasing okes across mountains on XR's......
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Offline TheBear

Re: BMW 1200GS Swing Arm
« Reply #36 on: September 29, 2015, 02:56:48 pm »
BLIKSEM!!!!!!!!!!!   
#33 #BRADICAL!
 

Offline Thorpheus

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Re: BMW 1200GS Swing Arm
« Reply #37 on: October 02, 2015, 08:07:54 am »
I have 2013 GS
26 000km was doing around 60km/h
Had pillion and luggage but not overloaded.

The rut was not very deep either
 

Offline Thorpheus

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Re: BMW 1200GS Swing Arm
« Reply #38 on: October 02, 2015, 08:11:52 am »
Just for interest:
What model year is your bike, Thorpheus?
1200GS or GSA?
Working load on the bike at the time - kg?
Speed at the time?
ESA setting?

Model 2013
1200 GS
me + pillion + luggage but under max loading
doing around 60km/h
Highest setting, with norm
 

Offline Thorpheus

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Re: BMW 1200GS Swing Arm
« Reply #39 on: October 02, 2015, 08:20:04 am »
Just for interest:
What model year is your bike, Thorpheus?
1200GS or GSA?
Working load on the bike at the time - kg?
Speed at the time?
ESA setting?

Model 2013
1200 GS
me + pillion + luggage but under max loading
doing around 60km/h
Highest setting, with norm


See picture of the hole.....