Milwaukee Road class F6a

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Milwaukee Road class F6a
Milwaukee Road class F6a
Milwaukee Road F6a locomotive #6417. Photo by Otto Perry at Chicago, Illinois on September 25, 1935.
Power type Steam
Gauge ft 8½ in (1435 mm)
Leading wheel size 36 in (914 mm)
Driver size 79 in (2007 mm)
Trailing wheel size 43 in (1092 mm)
Wheelbase 40 ft 9 in (12.42 m)
Height 15 ft 6 in (4.72 m)
Total weight 375,850 lb (170,483 kg)
Tender capacity 20 tons coal (18,000 kg)
Boiler pressure 225 psi (1.55 MPa)
Valve gear Baker valve gear
Tractive effort 45,820 lbf (203.82 kN)
Career Milwaukee Road
Number in class 8
Number #6414 – 6421

The Milwaukee Road's class F6a comprised eight steam locomotives of the 4-6-4 configuration, commonly nicknamed "Hudson" but known as "Baltic" on the Milwaukee.