@John Cutler said:
If you build (or in my case, try to build) split frame chassis, you need all the frame width you can get so as to fit a gearbox and a split on the driven axle.
It doesn’t have to so difficult to get a gearbox to fit into a split chassis. Do a cut-and-shut on an appropriate High Level gearbox like I did in the attached pictures.
Okay, the actual locomotive is in P4, but as you will see, there’s yards of space between the gaps in the axle and the bearings themselves.