The truth is that there is no free lunch. A Diesel Electric locomotive is powered by Diesel fuel. Its efficiency is degraded by the generator and motors (with about 80% efficiency each). The Diesel would have higher fuel efficiency if it was connected to the wheels with a gear set, instead of the Gen/Motor set. But there is the issue of getting the massive power (6000HP (Diesel)in a General Electric Dash-9 CW44) to a movable set of wheels. An automatic would do it but they have mediocre efficiency as well. The energy to move the freight comes from good old Diesel oil the compromise is made to use a generator and motors to allow dynamic braking (retarder system with massive resistors to dissipate the heat) and smooth starts. With respect, Jim
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Today's Featured Article - Talk of the Town: What's The "Stuckest" You've Ever Been? - by Edited by Kim Pratt. Another great discussion from the Tractor Talk Discussion Forum. The discussion started out with the following post: "I was about 14 (part of the problem) when I got stuck. I was disking with a cab equipped IH 966. The window was dirty and I was driving into the evening sun. It was hard to see and it was my first pass down the field. I got the tractor so stuck that the underside of the tractor was resting on the ground. My uncle wanted
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