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Get A Starter Motor Runnin’ In Your Robot
Auto starter motors are often overlooked for use in robot building. Typically, a starter motor can draw 50 to 150 amps with no load and over 1,000 amps under heavy load so they may appear to be difficult to use. Since nearly all are series wound (SW), they can be as good as or better than permanent magnet (PM) motors for powering combat robots. Plus, they are inexpensive and readily available. The torque of an SW motor is proportional to the current squared whereas the torque of a PM motor...
SERVO Magazine (October 2008)
By Steven Schmitt