Rule R502

R502 *Only 4 propulsion motors. A ROBOT may not have more than 4 propulsion motors. A propulsion motor is a motor that enables the ROBOT to move around the FIELD surface. Motors that generate small amounts of thrust as a secondary or incidental feature are not considered propulsion motors.

Examples that are not considered propulsion motors include:

A. motors that primarily alter the alignment of a wheel in contact with the FIELD surface (such as a swerve steering motor),

B. motors that run MECHANISM wheels (e.g. for CORAL manipulation) that occasionally happen to contact the carpet, but without enough force to generate significant thrust, and

C. motors that change the speed of the drive wheels using a shifting MECHANISM without significantly contributing to propulsion.