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Milwaukee Road Class F3-as/F1 4-6-2 Pacific Streamlined Steam Locomotive

The Milwaukee Road Class F3-as/F1 4-6-2 Pacific locomotive was modified from a superheated Class F3. The firebox was widened and nine inches were cut off the tubes and flues. It was then streamlined with a Hiawatha-like casing based on the Milwaukee's F7's . The porthole centered in a convex smokebox cover and featured a comb on its upper edge which served as the leading edge of a skyline casing that ran in a straight line over the boiler to the rear end of the cab. A retractable coupler and cylinder skirts gave the locomotive an Art Deco look.

It saw service on the Chippewa Hiawatha which ran from Chicago through Milwaukee and Green Bay to Ontagon, Michigan.

Milwaukee Road Class F3-as/F1 4-6-2 Pacific Overview

Type and origin
Power type: Steam
Builder: Milwaukee Road
Build date: 1940
Total produced: 2
Specifications
Whyte notation: 4-6-2
Gauge: 4 ft 8 1⁄2 in standard gauge
Driver diameter: 79 ft (2007 m)
Driver Wheelbase: 14 ft (4.27 m)
Engine Wheelbase: 35.58 ft  (10.84 m)
Wheelbase Loco & tender: 67.39 ft  (20.54 m)
Weight on drivers: 191,400 lbs (86,818 kg)
Locomotive weight: 284,300 lbs  (128,956 kg)
Locomotive and tender combined weight: 440,300 lbs (199,716 kg)
Fuel type: Coal
Fuel capacity: 13 tons (11.80 mt)
Water capacity: 8,500 gal (32.20 ml)
Boiler pressure: 200 psi (13.80 kPa)
Firegrate area: 59.80 sq ft (5.56 m2)
Combined heating surface: 3,424 sq ft (318.21 m2)
Superheater area: 620 sq ft (57.62 m2)
Valve gear: Walschaert
Cylinders: Two, outside
Cylinders (dia x stroke): 23.5" x 28" (597 mm x 711 mm)
Performance figures
Tractive effort: 33,275 lbs  (15093.30 kg)
Factor of adhesion: 5.75
Career
Operator: Milwaukee Road
Numbers: 151, 152
Disposition: All scrapped. 

See also:

Streamlined Steam Locomotives

Milwaukee Road

Locomotives

Chippewa Hiawatha

Milwaukee Road No. 152 with the 'Chippewa' passenger train at Milwaukee, Wisconsin in 1950. 

Dan Pope Collection/RMP Archive. 

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Milwaukee Road No. 152 with the 'Chippewa' passenger train at Milwaukee, Wisconsin in 1950. Dan Pope Collection/RMP Archive.
Chippewa logo