I think it would have been a good idea to start your 1st scratchbuild with something a little easier Gareth. The prewar cars are difficult to convert to slotcar use, even for an experienced scratchbuilder!
But good luck
A good chassis/motor for these are the ones from the Polistil 1/43 f1 cars. You can pick these up for a few pounds from any swapmeet.
But wheels and tyres are always going to be a problem.
But good luck

A good chassis/motor for these are the ones from the Polistil 1/43 f1 cars. You can pick these up for a few pounds from any swapmeet.
But wheels and tyres are always going to be a problem.