Grand Trunk Western classes U-1c, d and e
Canada 1925 22 produced
The Grand Trunk Western received five U-1c from Baldwin in 1925, which were similar to parent company Canadian National's U-1a and b. They were modern Mountain type locomotives that were suitable for passenger, express and freight trains. They had a feed water heater and a stoker and were the first GTW locomotives with a Vanderbilt tender. Beginning in 1929, the CLC delivered five U-1d and the Montreal Locomotive Works twelve U-1e. The sub-variants d and e are largely the same, but differ in the Walschaert and Baker type valve gear.
Technical data
General
| Property | U-1c | U-1d and e |
|---|---|---|
| Built | 1925 | 1929-1930 |
| Manufacturers | Baldwin | Canadian Locomotive Co., Montreal Locomotive Works |
| Wheel arrangement | 4-8-2 (Mountain) | |
| Gauge | 1,435 mm (Standard gauge) | |
Dimensions and weights
| Property | U-1c | U-1d and e |
|---|---|---|
| Length | 28.08 m | |
| Wheelbase | 12.73 m | 12.75 m |
| Total wheelbase | 24.48 m | 22.73 m |
| Service mass | 160.6 t | 160 t |
| Adhesion mass | 104.9 t | 105.6 t |
| Total mass | 274 t | 260.4 t |
| Rigid wheelbase | 5.94 m | |
| Axle load | 26.2 t | 26.4 t |
| Water capacity | 51,387 l | 35,961 l |
| Fuel capacity | 16.3 t (coal) | 13.6 t (coal) |
Boiler
| Property | U-1c | U-1d and e |
|---|---|---|
| Grate area | 6.197 m² | |
| Firebox surface | 28.521 m² | 29.636 m² |
| Tube heating surface | 346.622 m² | 332.686 m² |
| Evaporative heating surface | 375.143 m² | 362.322 m² |
| Superheater surface | 97.362 m² | 96.619 m² |
| Total heating surface | 472.5 m² | 458.9 m² |
Power plant
| Property | U-1c | U-1d and e |
|---|---|---|
| Driver diameter | 1,854 mm | |
| Boiler pressure | 14.5 bar | 17.2 bar |
| Expansion type | simple expansion | |
| Cylinders | two, 660 x 762 mm | two, 610 x 762 mm |
Power
| Property | U-1c | U-1d and e |
|---|---|---|
| Power source | steam | |
| Estimated power | 2,461 kW (3,346 PS) | 2,685 kW (3,651 PS) |
| Starting effort | 220.6 kN | 223.7 kN |
Calculated values
| Property | U-1c | U-1d and e |
|---|---|---|
| Factor of adhesion | 1 : 4.67 | 1 : 4.63 |
| Optimal speed | 68 km/h | 74 km/h |
| Power-to-weight ratio | 15.3 kW/t | 16.8 kW/t |
| Heating Surface Equivalent | 712.5 m² | 703.7 m² |
| Cylinder volume/HSE | 1 : 732.69 | 1 : 632.05 |
| Adhesive weight/Total | 1 : 1.53 | 1 : 1.52 |
| Tractive force/Heating surface | 1 : 9.75 | 1 : 10.18 |
| Grate area/Heating surface | 1 : 76.25 | 1 : 74.06 |
| Firebox/Tube surface | 1 : 12.15 | 1 : 11.23 |
| Total/Superheater | 1 : 3.85 | 1 : 3.75 |
