E_el-2 (at first named as Yu_e-001) is one of the oldest diesel-electric locomotives in world history. It designed in Russia by professor Yu. Lomonosov, and built in the November 1924 on the Esslingen plant in Germany for Russian railways. From 1925 E_el-2 was in Russia and it used with experimental trains near Moscow. In 1928 the system of diesel cooling was modernized, and E_el-2 was in use by Middle-Asian Railroad in Russia. It had a very hard work in deserts, mountains ang great non-water steppes. The E_el-2 was the proof of the possibilities and outlooks of diesel locomotives. It worked with trains near 30 years. Only from 1954 it was out of use. Technical parameters: Diesel: MAN, 6V45/42 1200 hp. Traction power: 900 hp. Axle formula: 1-5-1. Traction generator: BBC, 800 kW. Traction motors: 5*142 kW. Traction force: 15200 kg. Full weight: 124,8 tons. Lenght: 14,2 m. Height: 5,2 m. Width: 3,1 m. Traction wheels: 1,22 m. In a photo: E_el-2 after the first test in Esslingen, November, 6, 1924. The designers and guests are near the locomotive. Photo: Unknown author. Scan by Oleg Izmerov, .