Ole,
The paddle wheels for the Glasgow are difficult to find nowadays. Why not try asking on Paddleducks, which is a website and forum specialising in model paddle steamers?
**LINK**
If you have difficulty locating a set and are skilful at engineering, the plans for the feathering paddle wheels (and gearbox) for the paddle tug Cheftain are available in the shop above. MM1244 is the number. They will need re-engineering to a different size/scale to suit your model. The Glasgow is 1:40 scale whereas the Cheiftain tug (MM1168) is 1:32 scale.
**LINK**