Our motors are equipped with an internal "Temperature Snap Switch." This is a normally closed temperature switch, set at 120 degrees C., which will open if the motor starts to overheat. This switch can be connected to a diagnostic system or an emergency shut off switch ... or not connected to anything.

NOTE: The hottest point on the exterior of a motor should never exceed 180 degrees Celsius, although our motors are stress tested to 205 degrees C. The maximum brush temperature should not exceed 205 degrees Celsius.

For vehicles intended solely for use on the drag strip, motor cooling is not required. The motors do not run long enough to build any substantial amounts of heat. HOWEVER -- fans are still required. When a series wound, brushed DC motor runs -- it grinds down the brushes. As a result, a cloud of carbon dust is circulated inside the motor. If this dust accumulates, it is possible to have an arc flash over inside the motor -- causing all sorts of damage. The carbon dust must be blown out of the motor.

Some clients have asked for motor ratings while cooling the motors. We do not have a horse power rating for a motor with forced air cooling. There are some obvious limitations to forced air testing, such as ambient temperature, fan type, fan efficiency, motor intake & exhaust ports and CFM (cubic feet of air per minute moved by the fan).

We have done some testing with forced air ... and cooling with exotic gases, such as CO², helium and argon. What we have found is interesting. For Ev'ers, ambient temperature is the key. As a motor gets hot, the HP is lower than the initial HP generated by a cool motor. By blowing enough air to maintain, or approximate, ambient temperature ... the motor's one hour HP rating will increase to near its initial HP output. This is not something normally tested or rated by motor manufacturers ... but typically you can expect a 10 - 15 % increase in HP, with 20% possible on some motor designs.

One of the problems we have in determining motor ratings (for EV'ers) is finding a dynamometer capable of handling the unusual voltages, current and torque developed in testing EV motors. So far, we have been unable to locate such a dyno ... but we are still looking and have recently developed some good prospects. To date, most of the high voltage ratings seen on our web site (NetGain Technologies, LLC) have been calculated using standard industry formulas and practices.

WarP motors do not have interpoles. The interior size limitations of the motor case prevent interpoles from fitting inside the motor. That is why no motor (of these HP ratings) is available with interpoles in a 9" or smaller configuration.

*NGT Racing is a Trade Name of NetGain Technologies, LLC

WarP motors may ONLY be purchased through our dealer network.
Please contact John at 1.888.446.2572 for information on availability and shipping.