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Preserved SP P-8 class 4-6-2 locomotive
Southern Pacific 2472
SP No. 2472 at the Niles Canyon Railway
Type and origin
Power type
Steam
Builder
Baldwin Locomotive Works
Serial number
54477
Build date
March 1921
Rebuild date
November 29, 1940
Specifications
Configuration:
• Whyte
4-6-2
• UIC
2'C1'
Gauge
4 ft 8+1⁄2 in (1,435 mm) standard gauge
Driver dia.
73 in (1,854 mm)
Wheelbase
75.80 ft (23.10 m)
• Engine
35.50 ft (10.82 m)
• Drivers
13 ft (4.0 m)
Axle load
60,700 lb (27,500 kg)
Adhesive weight
180,000 lb (82,000 kg)
Loco weight
297,800 lb (135,100 kg)[1]
Tender weight
160,800 lb (72,900 kg)
Total weight
457,800 lb (207,700 kg)
Fuel type
Oil
Fuel capacity
4,000 US gal (15,000 L; 3,300 imp gal)
Water cap.
12,000 US gal (45,000 L; 10,000 imp gal)
Firebox:
• Grate area
70.40 sq ft (6.540 m2)
Boiler pressure
210 psi (1.4 MPa)
Heating surface:
• Firebox
283 sq ft (26.3 m2)
Cylinder size
25 in × 30 in (635 mm × 762 mm)
Valve gear
Walschaerts
Performance figures
Tractive effort
46,800 lbf (208.18 kN)
Factor of adh.
4.15
Career
Operators
Southern Pacific
Class
P-8
Number in class
15
Numbers
SP 2472
Delivered
April 15, 1921
Last run
January 1957
Retired
February 7, 1957
Preserved
April 10, 1959
Restored
April 30, 1991
Current owner
Golden Gate Railroad Museum
Disposition
Undergoing 1,472-day inspection and overhaul
Southern Pacific 2472 is a P-8 Class 4-6-2 heavy "Pacific" type steam locomotive built by the Baldwin Locomotive Works for Southern Pacific Railroad (SP) in 1921. No. 2472 is one of three surviving Southern Pacific P-8 class 4-6-2 Pacific locomotives, the other two being Nos. 2467 and 2479. The 4-6-2 designation means it has four leading wheels, six driving wheels, and two trailing wheels. The locomotive was used by the Southern Pacific Railroad to haul passenger trains until being retired in 1957. The locomotive was then donated to San Mateo County and placed on static display at the San Mateo County Fairgrounds. After being restored to operational condition in the early 1990s, the locomotive would pull excursion trains on the Niles Canyon Railway until being retired in 2015. The No. 2472 was then moved to the Northwest Pacific Railroad, where it is as of 2023, undergoing its Federal Railroad Administration (FRA) mandated 1,472 day inspection and overhaul.
^Bailey, Douglas C. "Southern Pacific RR No. 2472". SteamLocomotive.info.
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SouthernPacific2472 is a P-8 Class 4-6-2 heavy "Pacific" type steam locomotive built by the Baldwin Locomotive Works for SouthernPacific Railroad (SP)...
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displayed inside the Central Pacific Passenger Station. It has two surviving siblings: P-8 class SouthernPacific2472, owned by the Golden Gate Railroad...
away, and weekend volunteers began restoring 2472 on weekends, shortly thereafter incorporating as Project 2472. After the boiler was restored, the locomotive...
413. ISBN 0-8047-4014-3. "SouthernPacific #2467". Niles Canyon Railway. Retrieved 2022-07-26. "SouthernPacific 4-6-2 2472 to Lead Excursions For First...
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where it became one of three surviving SouthernPacific 4-6-2 steam locomotives, the other two being SP Nos. 2472 and 2467. From 1989 until 2022, the volunteers...
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Portrait of the Atlantic Coast Express. Shepperton: Ian Allan. ISBN 0-7110-2472-3. "The Titled Trains of Britain". The Railway Magazine. No. 1327. November...
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