This is a nice model, congratulations on your very rapid build. The tracks you chose look very suitable for the scale, too. Presumably you are steering it by switching the motors, but I'm curious - are you going to implement track warping too? Your last photo above seems to show the centre bogie assembly in a slidable tube. By the way, a popular and very cheap drive unit for large scale tanks are cordless screwdrivers. They have very compact dual-stage planetary gearboxes with heaps of torque.
Steve.
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