SP 4-10-2 #5000 - Souther Pacific  Contributor's Pick!       
Massive example of a 1925 Alco-Schenectady oil burning locomotive built for the Southern Pacific. Specifics - class SP-1, 63.5" drivers, 225psi boilier pressure, 25x32" high pressure cylinders (2), 25x28" low pressure cylinders, engine weight 445,000 lb, tractive effort of 86,589 lb. Drury (1993) notes that they were too rigid for the curves snaking through the Donner Pass, where they were first tried. After relocation to the Sunset Route east of Los Angeles, the 4-10-2s ran until the mid-1950s. It is there - between Roseville and Summit, Calif on a 2 1/2%, 80-mile grade - "...the engines were remarkably successful because the operating condtions prevented excessive speeds and the even torque of the three cylinders prevented undue stalling at low speeds." No exact date, location or photographer was listed.
Date: 6/1/1950 Location: Unknown, CA Views: 1027 Collection Of:   Gary Everhart
Locomotives: SP 5000(4-10-2)    Author:  Gary Everhart
SP 4-10-2 #5000 - Souther Pacific
Picture Categories: Roster,Yard,Steam This picture is part of album:  SP 4-10-2 #5000
User Comments
Name Type Comments Date
Butch Getz General Another nice large engine. 3/24/2015 10:01:35 AM

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