Well, not entirely happy with the gearbox design, it just doesn't look close enough to the original so I decided to design my own. Anyway using some one else's didn't seem right so I've done some research and come up with this:
Early running was interesting. It is apparent that there is quite a lot of frictional losses in all those gears so I'm going for a belt drive. Needless to say the exact pulleys I need aren't available commercially so I've designed and printed my own....
More in that in due course once this gearbox arrives.
I've also got some paint in the body so will show that soon.
Cheers
Andi