This one is on a 160+hp 2000cc Bristol 6 Cyl FN Special and is competitive with some ERAs.
As you can see, no diff, just loves to drift!
Lot of maintenance but pretty reliable even in fierce competition events.
The Main sprockets are fitted to the solid axle on a keyway.
Ratios are selected when the selection "Monkey Plate" shifts dogs into mesh as required.
The propshaft runs into a bevel box which drives the dog shaft. Prop rotates at engine speed!