The EMD DH1 was a class of experimental diesel-hydraulic switcher locomotives built by General Motors Electro-Motive Division in May 1951. [1] It was powered by a pair of small diesel engines suspended under the frame, driving through a pair of Allison torque converter transmissions to the inside wheels on each truck .

"Electro-Motive Division (EMD) of GM is famous as the major US locomotive builder since the 1940's. Except for 2 demonstrators DH1 & DH2, the only real commercial small locomotive venture was the Model 40, introduced in 1940.

The following is a list of locomotives produced by the Electro-Motive Corporation (EMC), and its successors General Motors Electro-Motive Division (GM-EMD) and Electro-Motive Diesel (EMD). Streamlined power cars and early experimental locomotives

The GMD GMDH-1 was an experimental diesel-hydraulic, center-cab, switching locomotive built by General Motors Diesel of Canada. Four examples were built. [1] .

The EMD DH1 was the Electro-Motive Division's attempt at the diesel-hydraulic concept, though they made the DH1 as a switcher. A total of 33 examples of what had became the EMD DH1 were ever constructed in 1951.

Oct 15, 2023 · While the major builders were looking at hydraulic propulsion primarily for mainline high-dollar locomotives, EMD’s Canadian subsidiary General Motors Diesel of Canada, was looking at ways to market the design for smaller applications. Thus, the GMDH1 was born.

The home to first generation locomotives photos, data and history, and central location for over 475 current locomotive rosters.

Apr 6, 2025 · Here is a picture of what was apparently EMD’s first venture into diesel-hydraulic locomotives. I presume it was the prior model referred to by Marre in his page on the DH2 (*), and logically it was the DH1.

Electro-Motive Diesel (abbreviated EMD) is a brand of diesel-electric locomotives, locomotive products and diesel engines for the rail industry.

EMD DH1, 1951, only 1 blt Joseph Testagrose: DL EMD SC #426, blt 1935 cn517 | INFO Ed Kaspriske: Bethlehem Mines EMD SC #109, blt 1935 cn517 | INFOArnold Morscher: CGW SC #7, blt 1936 cn616 Joseph Testagrose: CRIP EMD MC 1938 #707 F Byerly-JSF: Dardanelle & Russellville EMC SC #14, blt 1937 cn711