1Co-Co1

noun1

1. •
   A wheel arrangement for diesel-electric locomotives signifying that a locomotive has eight axles on two bogies, six axles are powered by electric motors, with one outer axle on each bogie unpowered.

   • Thus, in the diesel-electric Type 4 range, B.R. have progressed from the early 2,000-2,300 h.p. 1Co-Co1s of 130-140 tons to the latest Brush/Sulzer 2,750 h.p. Co-Co of about 114 tons weight; [...]. — 1963