As the workshop project rounds up, I will soon have no reason to hold off on starting work on 622. The first major stumbling block is of course wheels. If I can’t make those, then I may as well abandon the project; and by that, I don’t just mean the engine, I mean Pembroke itself.
Well that got needlessly dark fast.
I’ve been thinking about how to make the wheels for months, as I had already found I couldn’t source all the sizes I need, even in P4.
Model Railway Journal is a great source of inspiration for locomotive builders, and one of the ideas I have stowed away is to build the wheels from solid, but only fret out a few of the spokes. The rest are added later, and I’m thinking of casting them in place. By turning everything in one operation, the axle hole will definitely be straight and centred.
I’m planning to use split axles on this model, following some ideas from Andy W, over at the Scalefour Forum. With the axles and wheels one electrical unit, I can make the wheels and tyres out of a single piece of metal, with an interference or soldered fit to the axle. This departs from tradition in that most model locomotives have separate tyres (why?).
In the end, there are several non-traditional ideas here, and I would appreciate your feedback as to whether you think they are good or not:
- Turn the tyres and axle holes in one operation on the same piece of metal.
- Use a minimum number of metal spokes and cast the rest in resin.
- Employ an over-length axle to aid with quartering.