O.K. , so Tamiya produce the DMD (Digital Twin-Motor differential unit) for controlling the std. two motors in all of the present Tamiya tanks. They also produce different MF (Multi-function Units) for their various tanks. Now my question is ; WHY do they produce different DMD units when all that the unit does (as far as I'm aware) is to control the speed / direction of the tank in question? Yes , I can understand the various MF units for sounds etc.etc. but surely ONE std. DMD would be fine , no ? Debate please Thanks Mark
