Canadian Pacific class H1 “Royal Hudson”
Canada 1929 65 produced
The 65 class H1a to H1e locomotives were built for use with express and freight trains. Starting with the H1c, they received partial streamlined fairing. After King George VI's train was hauled by an H1d on his visit to Canada in 1939, all streamlined Hudsons officially earned themselves the name “Royal Hudson”. The five H1e built in 1940 finally had oil firing. They were replaced by diesel locomotives by 1960 and some continued to run excursion trips for a longer period of time.
Technical data
General
| Property | H1a, b | H1c, d | H1e |
|---|---|---|---|
| Built | 1929-1930 | 1937-1938 | 1940 |
| Manufacturers | Montreal Locomotive Works | ||
| Wheel arrangement | 4-6-4 (Hudson) | ||
| Gauge | 1,435 mm (Standard gauge) | ||
Dimensions and weights
| Property | H1a, b | H1c, d | H1e |
|---|---|---|---|
| Wheelbase | 12.04 m | ||
| Total wheelbase | 24.54 m | 24.65 m | |
| Service mass | 159.3 t | 160.6 t | 166 t |
| Adhesion mass | 83.4 t | 84.7 t | 88 t |
| Total mass | 291.7 t | 294.4 t | |
| Rigid wheelbase | 4.01 m | ||
| Water capacity | 54,510 l | ||
| Fuel capacity | 19.1 t (coal) | 20,441 l (oil) | |
Boiler
| Property | H1a, b | H1c, d | H1e |
|---|---|---|---|
| Grate area | 7.507 m² | ||
| Firebox surface | 32.702 m² | 30.286 m² | |
| Tube heating surface | 323.489 m² | 321.909 m² | 322.002 m² |
| Evaporative heating surface | 356.191 m² | 352.196 m² | 352.289 m² |
| Superheater surface | 152.361 m² | 143.257 m² | |
| Total heating surface | 508.6 m² | 504.6 m² | 495.5 m² |
Power plant
| Property | H1a, b | H1c, d | H1e |
|---|---|---|---|
| Driver diameter | 1,905 mm | ||
| Boiler pressure | 19 bar | ||
| Expansion type | simple expansion | ||
| Cylinders | two, 559 x 762 mm | ||
Power
| Property | H1a, b | H1c, d | H1e |
|---|---|---|---|
| Power source | steam | ||
| Estimated power | 3,057 kW (4,156 PS) | 3,132 kW (4,258 PS) | |
| Starting effort | 201.3 kN | ||
Calculated values
| Property | H1a, b | H1c, d | H1e |
|---|---|---|---|
| Factor of adhesion | 1 : 4.06 | 1 : 4.13 | 1 : 4.29 |
| Optimal speed | 93 km/h | 95 km/h | |
| Power-to-weight ratio | 19.2 kW/t | 19.5 kW/t | 18.9 kW/t |
| Heating Surface Equivalent | 824.4 m² | 808.3 m² | 790.2 m² |
| Cylinder volume/HSE | 1 : 453.35 | 1 : 462.37 | 1 : 472.97 |
| Adhesive weight/Total | 1 : 1.91 | 1 : 1.90 | 1 : 1.89 |
| Tractive force/Heating surface | 1 : 8.27 | 1 : 8.33 | 1 : 8.48 |
| Grate area/Heating surface | 1 : 67.74 | 1 : 67.21 | 1 : 66.01 |
| Firebox/Tube surface | 1 : 9.89 | 1 : 10.63 | |
| Total/Superheater | 1 : 2.34 | 1 : 2.31 | 1 : 2.46 |
