CN U-1-f

Canadian National U-1-f

CN 6077, on display in Capreol, Ontario

Type and origin Power type Steam Builder Montreal Locomotive Works Order number Q-401 Serial number 72757–72776 Build date October 1944 to January 1945 Total produced 20

Specifications Configuration 4-8-2 UIC class 2′D1′ h2 Gauge 4 ft 8 ^1⁄2 in (1,435 mm) Leading dia 34 in (0.864 m) Driver diameter 73 in (1.854 m) Trailing dia 43 in (1.092 m) Wheelbase Coupled: 19 ft 0 in (5.79 m) Loco: 42 ft 2 in (12.85 m) Loco & tender: 80 ft 10 ^3⁄4 in (24.66 m) Length 90 ft 0 ^1⁄8 in (27.44 m) Width 10 ft 9 in (3.28 m) Height 15 ft 4 ^1⁄2 in (4.69 m) Adhesive weight 236,950 pounds (107.48 tonnes; 105.78 long tons) Loco weight 355,700 pounds (161.3 tonnes; 158.8 long tons) Tender weight 281,840 pounds (127.84 tonnes) Fuel type Originally coal, later oil Tender cap Coal: 18 tons coal, 11,700 gal water Oil: 5,000 gal oil, 11,000 gal water Firebox:  • Firegrate area 70.2 sq ft (6.52 m^2) Boiler pressure 260 lbf/in^2 (1.79 MPa) Heating surface 3,584 sq ft (333.0 m^2)  • Tubes and flues 3,198 sq ft (297.1 m^2)  • Firebox 386 square feet (35.9 m^2) Superheater Schmidt type E  • Heating area 1,570 sq ft (146 m^2) Cylinders Two, outside Cylinder size 24 in × 30 in (610 mm × 762 mm) Valve gear Walschaerts Train heating Steam heat

Performance figures Tractive effort 52% (52,315 lbf or 232.7 kN) Factor of adh 4.5

Career Operators Canadian National Railways Class U-1-f Numbers 6060–6079 Retired 1960 Preserved Three: 6060, 6069, 6077 Disposition Three preserved, remainder scrapped.

Canadian National Railways U-1-f class locomotives, were a class of twenty 4-8-2 or Mountain type locomotives built by Montreal Locomotive Works in 1944. They were numbered 6060–6079 by CN and nicknamed “Bullet Nose Bettys” due to their distinctive cone-shape smokebox door cover.

Construction history

The order for these engines came during World War II when steel was of extreme value. The mountain type locomotive was a step down in size from the much more prevalent Northern Type (4-8-4). As a result of the step down in size the mountain type had less power but more speed and served well as a general purpose workhorse.

Modifications

Half the class had been converted to oil-firing by October 1944. This resulted in the 18-ton coal/11,700-gallon tender being exchanged for a 5,000-gallon oil/11,000-gallon water tender. In later years several locomotives lost the distinctive cone-shaped smokebox door cover.

Preservation

Of the twenty locomotives that were built, only three remain in existence: 6060 owned by the Rocky Mountain Rail Society at the Alberta Prairie Railway, Stettler, Alberta; 6069 at Sarnia, Ontario; and 6077 at the Northern Ontario Railroad Museum, at Capreol, Ontario.

Efforts have begun to restore engine 6069.

References

• "Canadian National Railways U-1-f locomotive diagram". CN Lines Special Interest Group. Retrieved 2 December 2009.