My battery box dinky started life as a earlier version of a Model Power 4 wheel diesel. I used a razor saw to cut the hood and cab away, keeping the running boards, end beams, smooth side frames (no detail) and knuckle couplers. LG
I have a similar build in progress. I cut off the cab, but kept the hood. I'll build a new open-air cab for a 1/35 scale engineer. I'm cannibalizing the RC parts out of a 1/72 scale tank so everything should fit very nicely.
The four wheel unit I'm using was made by either Tyco or AHM. The motor, which had a high starting voltage and sounded like a coffee grinder, is getting replaced with a geared micro-motor.
Nye, Inyo & Esmeralda Railroad
A battery box and cab were fashioned from Evergreen sheet styrene and strips then glued to what was left of the original body shell. Note the diamond tread floor in the cab. This was made by gluing wedding vale down then painting it silver. Ventilation holes need to be drilled at each mark on the battery box. LG