Yokomo YM-MBSMH Brush Spring, Mudium Hard, Copper

Brush spring for MAX series motors. Rather than the spring of a general RC car brush motor, a coil-type spring can apply a constant tension to the motor brush, so it is possible to obtain a stable output. If the tension is low, the output characteristics are closer to high rotation, and if the tension is higher, the output characteristics are closer to torque. However, this spring is a medium type with intermediate characteristics.