3/26/2025
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Home
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Union Pacific Railroad Company
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Locomotives
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Alco 4-6-6-4
> UP 3801
Pictures of UP 3801
Owner:
Union Pacific Railroad Company
Model:
Alco 4-6-6-4
Built As:
UP 3901 (4-6-6-4)
Serial Number:
68746
Order No:
S-1757
Frame Number:
22X32 cylinders, 69" drivers
Built:
9/1936
Notes:
Schenectady 09/1936, class CSA-1, re# from 3901 in 04/44, retired 09/57
Other locos with this serial:
UP 3801(4-6-6-4)
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Title:
UP 4-6-6-4 #3801 - Union Pacific
Description:
A nice 1971 reprint of a 1936 Alco built Challenger type locomotive. Originally it was numbered 3901 but renumbered to 3801 in 1944.The unit was converted to an oil burner and then coal burner several times before reaching retirment between 1956-61. Specifics - class CSA-1, 69" drivers, impressive 255 psi boiler pressure, 22x32" cylinders (4), massive engine weight of 566,950 lb, impressive tractive effort of 97,305 lb. No photographer listed.
Photo Date:
5/1/1955
Upload Date:
3/4/2015 11:00:03 PM
Location:
Cheyenne, WY
Author:
Gary Everhart
Categories:
Roster,Yard,Steam
Locomotives:
UP 3801(4-6-6-4)
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1727
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