The EMD SW7 Switching Locomotive is rated at 62,000 lbs Starting Tractive effort and a continuous of 36,000 lbs @ 11.0 mph, now, don't miss this, here comes the funny bit, the Auran SW7 which is built-in is rated 296,747 lbs Starting Tractive effort and a continuous of 157,366 lbs @ 12.0 mph...