Quote:
Originally Posted by Richard Wallace
I'll hazard a guess:
The larger wheels spin faster, and exert more traction force because they support more of the robot's weight. That means a slight drag at the smaller wheels, which will be toward the rear in a 6WD because the front smaller wheels are lifted by torque. Rear drag opposes turning, making the robot feel smoother to driver.
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Ok, thank you for the explanation.