Baldwin Class 12-28 ¼ E

Baldwin Class 12-28 ¼ E
Type and origin Power type Steam Builder Baldwin Locomotive Works Model 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 Class 12-28 ¼ E Retired 1964 (revenue service) Disposition Four preserved, one scrapped during preservation

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.^[1]

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.^[1][2][3]

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.^[1]

• 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.^[4]

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

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		[3][5]
	White Pass & Yukon Route #70	62234	May 1938	White Pass and Yukon Route	Operational		[6][4]
	White Pass & Yukon Route #71	62257	January 1939	White Pass and Yukon Route	Stored, Awaiting restoration		[7][4]
	White Pass & Yukon Route #73	73352	May 1947	White Pass and Yukon Route	Operational		[8][9]

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