| Canadian National U-1-f | |
|---|---|
| CN 6077, on display in Capreol, Ontario | |
| Power type | Steam |
| Builder | Montreal Locomotive Works |
| Order number | Q-401 |
| Serial number | 72757–72776 |
| Build date | October 1944 to January 1945 |
| Configuration | 4-8-2 |
| UIC classification | 2′D1′ h |
| Gauge | 4 ft 8 1⁄2 in (1,435 mm) |
| Leading wheel diameter |
34 in (0.864 m) |
| Driver diameter | 73 in (1.854 m) |
| Trailing wheel diameter |
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 ⅛ in (27.44 m) |
| Width | 10 ft 9 in (3.28 m) |
| Height | 15 ft 4 1⁄2 in (4.69 m) |
| Weight on drivers | 236,950 pounds (107.48 tonnes; 105.78 long tons) |
| Locomotive 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 capacity | Coal: 18 tons coal, 11,700 gal water; Oil: 5,000 gal oil, 11,000 gal water |
| Boiler pressure | 260 lbf/in² (1.79 MPa) |
| Firegrate area | 70.2 sq ft (6.52 m2) |
| Heating surface: Tubes and flues |
3,198 sq ft (297.1 m2) |
| Heating surface: Firebox |
386 square feet (35.9 m2) |
| Heating surface: Total |
3,584 sq ft (333.0 m2) |
| Superheater type | Schmidt type E |
| Superheater area | 1,570 sq ft (146 m2) |
| Cylinders | Two, outside |
| Cylinder size | 24 × 30 in (610 × 762 mm) |
| Valve gear | Walschaerts |
| Tractive effort | 52% (52,315 lbf/232.7 kN) |
| Factor of adhesion |
4.5 |
| Train heating | Steam heat |
| Career | Canadian National Railways |
| Class | U-1-f |
| Number | 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.
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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.
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.
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.
