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Actually I think I have comingled three numbers:

  • AC traction motor slip ratio, up to 45%, which is the ratio of the rotating speed of the electric fields in the motor to the armature.
  • Locomotive wheel slip ratio, up to 25%, which is how far the wheel goes in comparison to how far the locomotive goes.
  • Locomotive tractive effort ratio, up to 30%, which is the tractive force compared to the weight of the locomotive.

Anyway, they're all impressively large numbers...  :-)
by asdf on Sat Dec 13th, 2008 at 10:44:20 AM EST
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