Terrier frame in O scale

For DrFrankensteam...
This is a test of the Terrier in O scale: for 32mm track
It is 32/45 times the size of my 1/32 scale / 45mm track / "Gscale" model.
Since simply reducing the size by 71.11% would not work for the motor I decided to see if there was any way to make it work with the same motor, and it looks like it may be possible with a single motor if the hubs are removed. This frame shows the concept, where the rear wheels are directly connected to the motor,and the other two pairs are on 3mm shafts (with 3x3x7) bearings. All other parts from the original model "should fit" if they are reduced by 71.1% But I have included copies of my latest version here (reduced) for completeness. Some small cutting may be required for the motor where it interferes with the body.
I can see no way to fit a proper shaft for the central wheels, so this is left as an exercise for your ingenuity...
You will also need to use different screws and other fittings or drill out to fit M3 as used i