When I read the instructions for this kit and found that there were several ways of putting the gears together my first thought was that I’d go for the simplest layout. But this would mean two of the axles being driven by the coupling rods, and since I’ve had problems with this before (my Farish conversion), I’m coming round to the idea of driving all the axles via gears.
[I subsequently decided that I must have bent the tab by more than a right-angle, so that it was below the intended level and hence interfered with the gearwheel. Would have been much easier to remedy if I'd checked before soldering the spacer on.]
An alternative gear arrangement, in response to a possible difficulty with attaching the brake rigging.