The mini car should have at least two sets of gears in the assembly package for the motor to spin on. Different types of gears have different ratios of rotation of the motor and the wheel, and they include "3.5:1", "4:1", "4.2:1", "5:1", and "6.4:1". Higher the ratio, better the acceleration rate and torque; lower the ratio, better the maximum speed.
Shop Gears ListEdit
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