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Western Railroad Discussion > Traction motorsDate: 07/03/26 21:08 Traction motors Author: Auburnrail Just a question for those in the electric car or locomotive business.
With some electric cars now approaching 1,000 hp with 2 electric motors, my question is about the difference between a locomotive traction motor, which I have seen is much larger and heavier than could ever be packaged in a car, and the equivalent HP motor in a car? TIA. George Andrassy Date: 07/03/26 22:01 Re: Traction motors Author: SD45X GE AC C4 doing about 1100 hp per axle
Date: 07/03/26 22:08 Re: Traction motors Author: sarailfan There's a substantial difference in the torque output of a traction motor versus the motors in an electric car.
Posted from Android Darren Boes Lethbridge, AB Southern Alberta Railfan Date: 07/04/26 07:13 Re: Traction motors Author: NSDTK Duty cylce plays a major part in this. Car isnt made to produce 1000hp but for a quick moment. Locomotive traction motors are rated for that for hours on end
Date: 07/04/26 09:48 Re: Traction motors Author: PHall NSDTK Wrote:
------------------------------------------------------- > Duty cylce plays a major part in this. Car isnt > made to produce 1000hp but for a quick moment. > Locomotive traction motors are rated for that for > hours on end Locomotive traction motors have forced air cooling when enables them run for hours at very high output. Date: 07/04/26 20:57 Re: Traction motors Author: Auburnrail Thanks fir all who replied. My basic question was why are
locomotive motors so large and heavy compared to rquivalent horsepower electric car motors? Date: 07/04/26 22:29 Re: Traction motors Author: PHall Auburnrail Wrote:
------------------------------------------------------- > Thanks fir all who replied. My basic question was > why are > locomotive motors so large and heavy compared to > rquivalent horsepower electric car motors? Because they have a much, much higher power output. 420,000 pound locomotive vs 8,000 pound car. Date: 07/05/26 10:26 Re: Traction motors Author: timz Higher torque, he must mean. Can't get more torque without more copper.
Date: 07/06/26 15:34 Re: Traction motors Author: NSDTK Have to have a large heavy motor to handle the 100% high amperage duty cycle . A smaller motor would overheat and melt under such demand.
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