One day, I dream of having a workshop where my pillar drill can live set up and ready to go at all times. That would mean jobs like this would take a few seconds instead of quarter of an hour or more.
Anyway, the trolley is supposed to be powered with a SPUD, there's space under the floor for it. I'm building it unpowered, so needed to make a replacement, or fake SPUD. A bit of wood with holes drilled through seemed to be the answer and construction took a couple of minutes.
Axles were cut to length and wheels pressed on in the vice. They are all the same diameter, despite being obviously different makes. This won't show behind the foot boards and I don't have any spare 10.5mm wheels to have at the moment anyway.
Testing the unit under the trolley, reveals a problem:
This might be an O gauge kit, but set the wheels to sit on 32mm track and they won't fit underneath. Hmmm. More thinking required...