Talk:Co-Co locomotive

First examples
I'd always expected that the US would have some of these in the 1930s, but so far I can't see any (they're B-B or A1A-A1A). Which were the first mainline diesel-electric Co-Cos? Andy Dingley (talk) 12:04, 10 September 2019 (UTC)


 * I'm not certain, but I would think it would be something in EMD's SD series. There may have been an earlier Baldwin or Alco design.  Slambo (Speak)  13:39, 17 July 2021 (UTC)