I was working in Germany again last week and finished the job on Thursday evening , which gave me some time before heading back to Frankfurt airport. on Friday. The weather wasn't good so I found that in Neckarsulm  there is the Deutsches Zweirad-und NSU-Museum.. Spent a couple of hours  at the museum, which has a large selection of motorcycles and a few cars before heading  to Hockenheim. In the collection I found this 1903 Laurin & Klement motorcycle.  

Good Museum with friendly staff and they were amused when I told them my first motorised transport when I was 16 was an NSU quickly  

Got any more pics?

I'm not seeing how the engine drives the rear wheel.

Belt

Big belt, on a pulley the opposite side of the wheel to the chain side.  Large pulley, not that much smaller than the wheel rim diameter.

 

G

21 hours ago, Gaz said:

Big belt, on a pulley the opposite side of the wheel to the chain side.  Large pulley, not that much smaller than the wheel rim diameter.

 

G

Oh I see it now! In fact it's hard to miss now you've pointed it out. 😄

I was looking for a chain. Reminds me of this.