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Old 03-28-2005, 04:15 PM   #15
typesix
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Join Date: Jul 2004
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DC locomotives are generally 3600 hp max with 6 axles(or motors), 4 axles having found too slippery. Modern DC locos have engine connected to AC alternator, then rectify the AC back to DC. There are also AC locos (6 axle) with upper limit of 6000 hp, but generally most customers take 4000 hp units. AC locos are becoming more popular despite increased first costs because of better traction, power handling, and reduced maintenance. It has been popular in Europe to have mechanical coupling to drive wheels.
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