R1200GS Forum banner

1 - 15 of 15 Posts

·
Registered
Joined
·
5 Posts
Discussion Starter #1 (Edited)
Thank you for allowing me access to this R1200GS forum.

Although I'm a R-RT driver since 1997, i've a request for BMW riders of other models like the GS series.

Let me introduce myselves,
My name is Robbert, 50+ years old and a BMW rider since 1997. Last year I started a techical study at a dutch academy ("one is never to old te learn" according to a dutch saying) For an assigment of the course reliability of technical systems, I have to write an technical paper about failure modes and a root-cause analyses. I'm challenged to "bring my own problem" and my motorcycle is the lucky one;-)

Some background:
In 1997 I bought a second hand motorcycle to commute between my house and work in the “randstad” in Holland. It was a BMW R80RT. As I am interested in mechanics, I decided to do the maintenance my selves. As source of information I used 3th party maintenance manuals and internet fora. In 2019 I bought my third motorcycle a BMW R1200RT-P, a former police motorcycle, again with the intention to do (almost) all maintenance myself. Browsing over Internet fora I found a lot of disturbing items about failures of the drive-shaft of these motorcycles. I’ve never read these kind of failures on the older R-series motorcycles.

The assignment:
The assignment will cover common failures of the drive-shaft of BMW R1200 model motorcycles. It will contain an analysis of the failure modes, a root cause analyse and when possible advise how to prevent these failures.

Using a survey I try get collect information about drive-shaft fails, can I find a relation to certain models or usage?

I would be greatful if you would fill in this Survey if youre motorcycle had a drive-shaft failure. It should take not more than 5 minutes of your time.

All provided information will only be used for this assignment.

Robbert

link to the: Survey
 

·
Registered
Joined
·
553 Posts
I'm not into surveys as they are like statics and you can make them come out however you like by manipulating what the input is.

This is like asking "how long is a piece of string". What is considered a driveline failure and are direveline failures all lumped together no mater the mileage?
 

·
Registered
Joined
·
5 Posts
Discussion Starter #3
Thanks for your reply. It's not my intention to manipulate the outcome. I don't have BMW shares or any commercial interest in this subject. The Mileage at the time of the failure is indeed one of the questions as is the year of manufacturing of the bike.

regards,

Robbert.
 

·
Registered
Joined
·
553 Posts
What about conditions the bike was used in? Dry desert. repeated salt water exposure at the beach, on road, off road etc. What about GS vs GSA suspension as the GSA is longer increasing universal joint angles. Same with GS standard and "low" suspensions. Then then there are maintnenace intervals.

With so many variables it would be impossible to effectively diagnose a single root cause.

I've has 7 R1200GS and pulled the drive shafts out of all but one. The 6 that I have pulled for inspection were all between 40,000 and 55,000 and all were in excellent condition. Spline and universal joints showed little to no sign of wear.

The one I did not pull was a 2006 that I bought in 2017 with 11,274 miles on it. Then sold it in 2020 with 20,000 miles on it. The bike was extremely clean and lead an easy life. At 20K it was just too little of mileage to even think wear would be an issue.
 

·
Survivor
Joined
·
711 Posts
Have you even looked at the survey? It appears you have not.
 

·
Registered
Joined
·
553 Posts
Have you even looked at the survey? It appears you have not.
I have not because I have not expierence a drive line failure, knock on wood.

Update:

Out of curiosity I did open the survey and glanced at the 1st couple of questions. In the opening thread the OP asked about the "GS" series motorcycles but omits air and oil head variants. It only covers part of the hexhead series and no choice for GSA. Rigth from the beginning the survey is flawed.
 

·
Registered
Joined
·
139 Posts
I fill the form, actually there is no problem with the shaft, but when open for the maintenance check all joints and splines. Unfortunately there is no pictures. Only "problem" that I see was: rear U joint does not fall free in one of both axels. In this moment (winter with half meter snow) I decide prevantive change in specialized service for all type of cardans. Also prevanive change both the boots. I hate to waiting for cracks. 14years bike I thing no one before me change them.
 

·
Registered
Joined
·
6 Posts
I have a R1200GSA LC mj 11/2016. I had to replace the drive shaft twice. First time was after 65,000 km, rear joint was sticky and caused vibrations. Had to replace it again at 147,000 km, front joint was worn out completely, rear joint was sticky. Quality of BMW is not really getting better...
 

·
Registered
Joined
·
5 Posts
Discussion Starter #11
What about conditions the bike was used in? Dry desert. repeated salt water exposure at the beach, on road, off road etc. What about GS vs GSA suspension as the GSA is longer increasing universal joint angles. Same with GS standard and "low" suspensions. Then then there are maintnenace intervals.

With so many variables it would be impossible to effectively diagnose a single root cause.

I've has 7 R1200GS and pulled the drive shafts out of all but one. The 6 that I have pulled for inspection were all between 40,000 and 55,000 and all were in excellent condition. Spline and universal joints showed little to no sign of wear.

The one I did not pull was a 2006 that I bought in 2017 with 11,274 miles on it. Then sold it in 2020 with 20,000 miles on it. The bike was extremely clean and lead an easy life. At 20K it was just too little of mileage to even think wear would be an issue.
Thanks for the tip about the salt water, I'll add it to the list

Robbert.
 

·
Registered
Joined
·
5 Posts
Discussion Starter #12
At the moment I don't receive any Emails with attachment on my gmail account ([email protected]). I cannot find why. Emails without attachments do arrive.

I've changed the Email address in the survey to: [email protected]
So if you've already taken the effort of sending me photo's to the Gmail address, please can you send them again but now to [email protected] ?

p.s. anybody knows If I have to enable attachments in Gmail ?
 

·
Registered
Joined
·
851 Posts
Being curious and wondering what the purpose of this survey is.
Let me introduce myselves,
My name is Robbert, 50+ years old and a BMW rider since 1997. Last year I started a techical study at a dutch academy ("one is never to old te learn" according to a dutch saying) For an assigment of the course reliability of technical systems, I have to write an technical paper about failure modes and a root-cause analyses. I'm challenged to "bring my own problem" and my motorcycle is the lucky one;-)
 
1 - 15 of 15 Posts
Top