GE ES44C4
This week, I'll post about a locomotive that's quite close to our everyday life in North America. We are no stranger to AC locomotives, and certain freight roads have been mass-adopting them since their introduction. For an adhesion limited tonnage railroad, one needs as much tractive effort as possible for trains to achieve their desired performance, be it steep grades and/or tonnage limits. Locomotives with AC traction motors satisfy exactly those requirements ( here 's a page on why). On top of the superior tractive effort than DC units, AC motors don't suffer stall burns and require less maintenance because they have fewer contacting moving parts. Of course, with the advantages comes the added cost of purchasing an AC locomotive, and some railroads aren't doing that because DC units suffice in their operating environments. This brings us to the locomotive I'm writing about today, the ES44C4. " Memphis National Train Day 2013.1 (8874348877) " b