The chassis was fairly straightforward. I built it rigid, as I'm still new to chassis building I'll save compensation etc. for later efforts when I'm feeling more confident. Wheels are Romfords, lathe turned supplied by West Coast Kit Centre. Gearbox is a High Level Loadhauler+ 108:1. The motor is a Mashima.

I chose a Loadhauler+ to move the motor forward out of the cab. It still protrudes slightly but I can live with that. Here's a mock-up:

Coupling rods are laminated from 2 layers. I broached the holes out to 1mm on the centre rods as on this one, unlike the others, has a hole on one layer only so it needed setting to length before clamping together and soldering. I used the turned shafts from some old Kean-Maygib chasis setting jigs to set the middle rods to length as well as check the other rods. (Hopefully the photo should make this clearer).