Santa Fe class 3460

The Atchison, Topeka and Santa Fe Railway's 3460 class comprised six 4-6-4 "Super Hudson" type steam locomotives built in 1937 by the Baldwin Locomotive Works for service between La Junta, Colorado and Chicago, Illinois, a fairly flat division of the railroad suited for the 4-6-4 type. They were substantially larger than the road's earlier 3450 class locomotives, and all were built oil-fired, although in a manner that would allow for easy conversion to coal firing. All were fitted with SKF roller bearings on every axle.

ATSF 3460 class
ATSF 3460, the “Blue Goose”
Type and origin
Power typeSteam
BuilderBaldwin Locomotive Works
Serial number62083-62088
Build date1937
Total produced6
Specifications
Configuration:
  Whyte4-6-4
  UIC2′C2′ h
Gauge4 ft 8+12 in (1,435 mm) standard gauge
Leading dia.37 in (940 mm)
Driver dia.84 in (2,134 mm)
Trailing dia.40 in (1,016 mm)
WheelbaseLoco: 41 ft 1+12 in (12.53 m)
LengthLoco: 55 ft 3+14 in (16.85 m);
Loco & tender: 102 ft 6+34 in (31.26 m)
Width10 ft 9 in (3.28 m)
Height15 ft 2 in (4.62 m)
16 ft 8 in (5.08 m) over raised stack extension
Axle load70,266 lb (31,872 kilograms; 31.872 metric tons)
Adhesive weight210,800 lb (95,600 kilograms; 95.6 metric tons)
Loco weight417,300 lb (189,300 kilograms; 189.3 metric tons)
Tender weight396,246 lb (179,734 kilograms; 179.734 metric tons)
Total weight813,546 lb (369,018 kilograms; 369.018 metric tons)
Fuel typeOil
Fuel capacity7,000 US gal (26,000 L; 5,800 imp gal)
Water cap.20,000 US gal (76,000 L; 17,000 imp gal)
Tender cap.7,000 US gal (26,000 L; 5,800 imp gal) oil, 20,000 US gal (76,000 L; 17,000 imp gal) water
Firebox:
  Firegrate area
99.5 sq ft (9.24 m2)
Boiler88 in (2,235 mm)
Boiler pressure300 lbf/in2 (2.07 MPa)
CylindersTwo, outside
Cylinder size23.5 in × 29.5 in (597 mm × 749 mm)
Valve gearWalschaerts
Valve typePiston valves
Performance figures
Maximum speed120 mph (193 km/h)[1]
Power output3,600 hp (2,700 kW) @ 50 mph (80 km/h) (drawbar)
Tractive effort49,456 lbf (220.0 kN)
Factor of adh.4.26
Career
OperatorsAtchison, Topeka and Santa Fe Railway
Class3460 class
Numbers3460–3465
Preserved3463, in Topeka, Kansas
DispositionOne preserved, remainder scrapped

They had much in common with the Milwaukee Road's class F7 and the Chicago and North Western Railway's class E-4, all three types being fast, 84-inch drivered 4-6-4s for Midwestern service with 300 lb/in² boiler pressures.

In December 1937, locomotive #3461 set a world record for the longest single run by a steam locomotive by completing the 2,227 miles (3,584 km) from Los Angeles, California to Chicago without maintenance other than five refuelling stops en route, hauling Train #8, the Fast Mail Express. An average speed of 45 mph (72 km/h) was obtained, including stops; maximum speed during the run was 90 mph (140 km/h). During steeply graded portions of the run it was, of course, assisted by helper locomotives. Such long distance runs were a goal of railway operating departments, enabling a reduction in locomotive numbers and through increased locomotive utilization, reduce overall costs.[2]

The first locomotive, #3460, was built streamlined; painted light, robin's egg blue and silver, it became known as the "Blue Goose". It was the Santa Fe's only streamlined steam locomotive, featuring extensively in railroad publicity.

Locomotive #3461 was fitted with a streamlined "skyline" casing along the top of the boiler, encasing stack and domes, in an experiment to see if it helped clear smoke away from the locomotive. It was not retained. All of the locomotives otherwise had a Santa Fe-style telescoping stack extension fitted, which elongated the stack to clear smoke better and could be lowered to pass under low bridges and tunnels.

The 3460 class 4-6-4s, the 3765 class 4-8-4s, and the 5001 class 2-10-4s were designed and ordered around the same time and had much in common in their designs; in addition, they used the same six-axle tender design. The classes together were often called the "Big Three".

Only one of this class survives, #3463 was on static display on the grounds to the Southeast of the Kansas Expocentre in Topeka, Kansas. It is planned to be restored to operating condition by the Coalition for Sustainable Rail (CSR).[3]

NumberBaldwin serial numberDate builtDispositionNotes
3460620831937Sold for scrap.Streamlined, nicknamed "Blue Goose".
3461620841937Sold for scrap.Ran the longest single run by a steam locomotive from Los Angeles to Chicago without maintenance.
3462620851937Sold for scrap.
3463620861937On static display on the grounds to the Southeast of the Kansas Expocentre in Topeka, Kansas. Awaiting operational restoration
3464620871937Sold for scrap.
3465620881937Sold for scrap.

References

  • Westcott, Linn H. (1960). Model Railroader Cyclopedia - Volume 1: Steam Locomotives. Kalmbach Books. ISBN 0-89024-001-9.
  • Glischinski, Steve (1997). Santa Fe Railway. Osceola, WI: Motorbooks International. ISBN 978-0-7603-0380-1.
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