Canadian Pacific class G5
Starting in 1946, the Canadian Pacific had class G5 Pacific locomotives built for use on branch lines. With an adhesive weight of only 151.000 pounds, these had a low axle load by North American standards. Contrary to the field of service of most locomotives with this wheel arrangement, they were intended for use with regular passenger and freight trains, which was also noticeable in the driving wheel diameter of only 70 inches.
From an initially planned number of 600, only 102 were finally built, as more and more diesel locomotives were put into service. For the same reason, only ten years after the end of production, the first class members were retired and in 1960 the last ones disappeared. Today there are still six which are currently only on static display, but could possibly be made operational again.
Technical data
General
- Built
- 1946-1948
- Manufacturers
- Montreal Locomotive Works, Canadian Locomotive Co.
- Wheel arrangement
- 4-6-2 (Pacific)
- Gauge
- 1,435 mm (Standard gauge)
Dimensions and weights
- Length
- 23.27 m
- Wheelbase
- 10.25 m
- Service mass
- 104.1 t
- Adhesion mass
- 68.5 t
- Total mass
- 190.7 t
- Rigid wheelbase
- 3.96 m
- Axle load
- 22.8 t
- Water capacity
- 36,340 l
- Fuel capacity
- 12.7 t (coal)
Boiler
- Grate area
- 4.236 m²
- Firebox surface
- 18.488 m²
- Tube heating surface
- 220.831 m²
- Evaporative heating surface
- 239.318 m²
- Superheater surface
- 69.12 m²
- Total heating surface
- 308.4 m²
Power plant
- Driver diameter
- 1,778 mm
- Boiler pressure
- 17.2 bar
- Expansion type
- simple expansion
- Cylinders
- two, 508 x 711 mm
Power
- Power source
- steam
- Estimated power
- 2,051 kW (2,789 PS)
- Top speed
- 137 km/h
- Starting effort
- 151.2 kN
Calculated values
- Factor of adhesion
- 1 : 4.44
- Optimal speed
- 84 km/h
- Power-to-weight ratio
- 19.7 kW/t
- Heating Surface Equivalent
- 470.0 m²
- Cylinder volume/HSE
- 1 : 613.40
- Adhesive weight/Total
- 1 : 1.52
- Tractive force/Heating surface
- 1 : 10.24
- Grate area/Heating surface
- 1 : 72.81
- Firebox/Tube surface
- 1 : 11.94
- Total/Superheater
- 1 : 3.46