White Pass & Yukon Route 73

White Pass & Yukon Route 73 is an operating 2-8-2 "Mikado" type steam locomotive. It was built by the Baldwin Locomotive Works for the White Pass and Yukon Route in May 1947.[3] After retirement on June 30, 1961, the locomotive was moved to Bennett, British Columbia, in 1968 for static display. In 1979, the locomotive was moved again to Whitehorse, Yukon, this time to be restored to operating condition. Restoration was completed in 1982 and the locomotive has been back in service since then. It is currently the larger of two operating steam locomotives on the line.

White Pass & Yukon Route 73
WP&YR narrow gauge locomotive No. 73 at Skagway, Alaska in August 2006
Type and origin
Power typeSteam
BuilderBaldwin Locomotive Works
Serial number73352
Model12 28¼ E[1]
Build dateMay 1947
Specifications
Configuration:
​
 • Whyte2-8-2
 • UIC1′D1′ h2
Gauge3 ft (914 mm)
Driver dia.44 in (1.118 m)
Wheelbase55 ft 8 1⁄2 in (16.98 m)
Height12 ft 7 in (3.84 m)
Adhesive weight108,000 lb (49.0 t)
Loco weight145,000 lb (65.8 t)
Total weight248,400 lb (112.7 t)
Fuel typeOil
Fuel capacity2,500 US gal (9,500 l; 2,100 imp gal)
Water cap5,000 US gal (19,000 l; 4,200 imp gal)
Firebox:
 • Firegrate area		36 sq ft (3.3 m2)
Boiler64 in (1.63 m) diameter
Boiler pressure220 lbf/in2 (1.52 MPa)
Heating surface1,676 sq ft (155.7 m2)
 • Tubes993 sq ft (92.3 m2)
 • Flues555 sq ft (51.6 m2)
 • Firebox114 sq ft (10.6 m2)
CylindersTwo, oudside
Cylinder size17 in × 22 in (432 mm × 559 mm)
Performance figures
Tractive effort25,200 lbf (112.1 kN)
Factor of adh.4.24
Career
OperatorsWhite Pass and Yukon Route
Numbers
  • WP&YR 73
Retired1961 (revenue service)
Restored1982
Current ownerWhite Pass and Yukon Route (for tourist excursion service)
DispositionOperational, based in Skagway, Alaska
[2]

References
  1. "(untitled)". White Pass & Yukon Route. Archived from the original on December 11, 2007.
  2. "White Pass & Yukon 2-8-2 "Mikado" Locomotives of the USA". steamlocomotive.com. Retrieved 30 August 2016.
  3. "Steam Locomotives". White Pass & Yukon Route. Retrieved 30 August 2016.


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