Universal discs were made by Locomotive Finished Material Co. and had much larger, and fewer holes than GSC's Boxpok¹s. 4330 and 4342 were the only Mt-3's with Boxpok discs. These were built with sport cabs, apparently the first such application to home-built engines.

These locomotives were designated Class Mt-1 and assigned road numbers 4300 through 4327. They had 28 x 30 cylinders, 73" drivers, a 210 psi boiler pressure, a tractive effort of 57,510 lbs, and weighed 368,000 pounds. Later, in 1924 another six "Mountains" were delivered from ALCO.

Lone batch among Espee Mountains built for the El Paso & Southwestern (but delivered to the SP) with different running gear. They were later rebuilt with 28" cylinders and Walschaert valve gear (as in the other batches).

Mk-7 class, SP 3303, an ex-EPSW Mike refitted with a 120-SC-type tender, circa 1950-51. Eddie Sims Collection.

Apr 21, 2021 · They had 28 x 30 cylinders, 73" drivers, a 210 psi boiler pressure, a tractive effort of 57,510 lbs, and weighed 368,000 pounds. Later, in 1924 another six "Mountains" were delivered from ALCO.

IHC Premier M625 Southern Pacific Class Mt-3 4-8-2 Mountain Locomotive #4328. When the 4-6-2 Pacific fleets were becoming over-burdened as passenger trains grew in length and weight, the first North American 4-8-2 locomotives were built by the American Locomotive Company (ALCO) for the Chesapeake and Ohio Railway (C&O) in 1911.

Railroad Model Craftsman stated someone is bring out a "hybrid model" of the SP MT-3/MT-4. I wondered if that meant a model sort of like one and sort of like the other.

Dec 20, 2018 · Shown below is an image of an as-built engine, while on display in Salem, Oregon (photo courtesy Bob Church). This is SP 4345, last engine of Class Mt-3. You can see here …

Here is an ORIGINAL 35mm Kodachrome slide processed by Kodak This is SOUTHERN PACIFIC (SP) MT3 class 4-8-2 No. 4335 at Bakersfield CA on 8/4/55 by H. F. Stewart.

Statements instance of locomotive class 0 references subclass of tender locomotive 0 references image USA 024 Oakland 3.jpg 2,291 × 1,473; 1.87 MB 0 references country United States of America 0 references country of origin United States of America 0 references service entry 1925 0 references service retirement 1958 0 references track gauge 1435 mm track gauge 0 references manufacturer ...