This tracked robot is equipped with 32mm motors. The default configuration has a top speed of 179 ft/min and payload up to 15lbs. With different configurations, speed can range from 71-250 ft/min and payload can range from 3 to 15 lbs.
This set of wheelchair motors makes great heavy duty robot motors. One left motor and one right motor. They are right angle gear drives with a release and electric brakes. They are 24VDC and the operating speed is 120 RPM.