Baldwin Class 12-28 ¼ E

The Baldwin Class 12-28 ¼ E was a series of 2-8-2 "Mikado" type steam locomotives that were built by the Baldwin Locomotive Works for several narrow-gauge railroads.

Baldwin Class 12-28 ¼ E
Type and origin Power type Steam Builder Baldwin Locomotive Works Model Baldwin 12-28 ¼ E
Specifications Configuration: ​  • Whyte 2-8-2  • UIC 1′D1′ h2 Gauge 3 ft (914 mm) Driver dia. 44 in (1.118 m) Wheelbase 55 ft 8+1⁄2 in (16.98 m) Height 12 ft 7 in (3.84 m) Adhesive weight 108,000 lb (49.0 t) Loco weight 145,000 lb (65.8 t) Total weight 248,400 lb (112.7 t) Fuel type Coal (Steam era) Fuel capacity 2,500 US gal (9,500 L; 2,100 imp gal) Water cap. 5,000 US gal (19,000 L; 4,200 imp gal) Firebox: ​  • Grate area 36 sq ft (3.3 m2) Boiler 64 in (1.63 m) diameter Boiler pressure 220 lbf/in2 (220.00 psi; 1.52 MPa; 1,516.85 kPa) Heating surface: ​  • Firebox 114 sq ft (10.6 m2)  • Tubes 993 sq ft (92.3 m2)  • Flues 555 sq ft (51.6 m2)  • Total surface 1,676 sq ft (155.7 m2) Cylinders Two, oudside Cylinder size 17 in × 22 in (432 mm × 559 mm) Valve gear Walschaerts
Performance figures Tractive effort 25,200 lbf (112.1 kN) Factor of adh. 4.24
Career Operators White Pass and Yukon Route Retired 1964 (revenue service) Disposition Four preserved, one scrapped during preservation

History

The class of 2-8-2 "Mikado" type steam locomotives were designed in the 1910s with one example East Broad Top #12 "Millie" being built in December 1911, where it was classified by East Broad Top as a Baldwin 12-28 E-1.

But in the 1930s, an updated version was drawn up. This version had 44-inch driving wheels, a pair of 17 in x 22 in (431.8 mm x 558.8 mm) cylinders, a boiler pressure of 205 psi (1413.4 kPa), a tractive effort of 25,179 lbf (112 kN) and weighed in at 72 tons without the tender (115.25 tons with tender). Their tenders could hold up to 8 tons of coal and 4,000 gallons of water.

Accidents and Incidents

• White Pass & Yukon Route No. 72 was involved in a roundhouse fire that had destroyed the locomotive in 1969 and its boiler was scrapped in 1974.

Preservation

Only four locomotives of the Baldwin Class 12-28 ¼ E are still in preservation.

Currently preserved

Photograph	Locomotive	Serial no.	Build date	Operator	Status	Notes	Refs
	East Broad Top Railroad #12 "Millie"	37325	December 1911	East Broad Top Railroad	Stored, Awaiting restoration
	White Pass & Yukon Route #70	62234	May 1938	White Pass and Yukon Route	Operational
	White Pass & Yukon Route #71	62257	January 1939	White Pass and Yukon Route	Stored, Awaiting restoration
	White Pass & Yukon Route #73	73352	May 1947	White Pass and Yukon Route	Operational

Formerly preserved, scrapped

Photograph	Locomotive	Serial no.	Build date	Operator	Scrapped	Cause of scrapping	Refs
	White Pass & Yukon Route #72	73351	1947	White Pass and Yukon Route	1969 (locomotive) 1974 (boiler)	Involved in a roundhouse in 1969.