Sproket Problem

[Bikes on World Tour]

My 96 F650 with 60,000 k has a problem with the sprocket.
The multi-tooth of the drive shaft where the sprocket is mounted has become a lot of play. The circlip is a week construction and the sprocket went off on the Karakorum Highway in Pakistan. We could repair the drive shaft, but the teeth are worn now.
How can we rework the drive shaft, how difficult is it to get the drive shaft out, how can we harden the drive shaft. What parts should we exchange?
We will be in Bangkok / Thailand next week. So, there will be a BMW dealer for spares and lots of machining shops.
Any clou ?
Bets regards and namaste Kai

 

[bigwelsh]

no idea. But you might be able to tell me what happens at border crossings when you go from a country which drives on the left, to one which drives on the right. Ive always wandered how they do that. Good luck!