Chain jumping off my alfine hub gears

[headcoat]

The last couple of days my chain has started coming off, when I go over small bumps in the road. I have an Alfine hub gear and I am guessing the chain just need tensioning slightly. It's not that old so at the moment I am assuming its not stretched too much.

Can anyone tell me how I can tension the chain a bit more on this set up?

Thanks

 

[RecordAceFromNew]

Can anyone tell me how I can tension the chain a bit more on this set up?

It depends on what system you have for chain tensioning. I would suggest you read this first, and if you have eccentric bottom bracket then this might give you an idea, but how they are adjusted do vary.

 

[headcoat]

Thanks! That's it an eccentric BB, the LBS have adjusted it once already so I may not be able to do it anymore. Will look at it this evening.