Can I obtain specifications for the Pittman Motors used in the GEARS Invention and Design System kit?
Yes. All stock Pittman gear head motor specifications can be found on the Penn Motion Industries website. The Pittman motors provided in the GEARS Invention and Design System kit have 15V custom windings. For this reason they are not listed in the manufacturer’s data sheet. The windings are GM9X34 series windings and therefore much of the published information can be used to extrapolate the necessary information for a 15V winding. For your convenience, the basic winding data is listed below. Both the manufacturers published specifications and our own experimentally determined specifications are listed: Stall Current = 12.06 Amps @ 15.1 volts (Manufacturers Specs) = 0.8 Amps/Volt Stall Current = 9.7 Amperes at 12.5 volts (Experimental ) = 0.76 Amps/Volt KE Voltage constant = 2.43 volts/Thousand RPM (Manufacturers Specs) = 0.0232 volts/rad/sec. KE Voltage constant = 2.43 volts/Thousand RPM (Experimental) = 0.0232 volts/rad/sec.
