Quote:
Originally Posted by Pat Roche
That's not necessarily true. The reason 148 or 118 can't turn like a tank is because it has on central gearbox powering the entire drivetrain (not the rotation but the wheels). Coax crab can still be accomplished using two (or more depending on your preference) independent gearboxes that control the wheel nodes independently. If you only have one gearbox then regardless of programming you won't be able to turn like a tank.
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If the wheels are steered separately in pairs, one pair can be turned 180 and steering in place is possible.