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4/16/2021
 
 
 
 
 
Owner: Southern Pacific
Model:Alco 4-10-2Built As:SP 5000 (4-10-2)
Serial Number:66107Order No:438000
Frame Number:3 cylinders, 63.5" driversBuilt:0/1925
Notes:Schenectady, 1925
Other locos with this serial:  SP 5000(4-10-2)
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SP 4-10-2 #5000 - Souther Pacific
Title:  SP 4-10-2 #5000 - Souther Pacific
Description:  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.
Photo Date:  6/1/1950  Upload Date: 3/24/2015 7:33:57 AM
Location:  Unknown, CA
Author:  Gary Everhart
Categories:  Roster,Yard,Steam
Locomotives:  SP 5000(4-10-2)
Views:  1028   Comments: 1
SP 4-10-2 #5000 - Southern Pacific
Title:  SP 4-10-2 #5000 - Southern Pacific
Description:  Here is an older b&w reprint of Southern Pacific 4-10-2 #5000 at an unidentified locaiton, possibly Roseville, CA, where this class of locomotives frequented on its travels over Donner Pass. Date is approximate and unfortunately no photographer was listed for the photo.
Photo Date:  6/1/1950  Upload Date: 8/30/2015 7:05:48 AM
Location:  Unknown, CA
Author:  Gary Everhart
Categories:  Roster,Yard,Steam
Locomotives:  SP 5000(4-10-2)
Views:  944   Comments: 1


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