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Caledonian classes 49 and 903 “Cardean”
The Caledonian Railway had to operate many express trains with two 4-4-0 locomotives and also needed a helper locomotive at Beattock Summit. To improve this, McIntosh developed a 4-6-0 in 1903. Initially these were ju...
| Caledonian classes 49 and 903 “Cardean”Remove | |
|---|---|
| Variant | superheated |
| Built | 1911 |
| Manufacturers | St. Rollox |
| Wheel arrangement | 2C |
| Gauge | 0 mm |
| Length | |
| Service mass | 67359 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Caledonian classes 49 and 903 “Cardean”superheated |
|---|---|
| Built | 1911 |
| Manufacturers | St. Rollox |
| Wheel arrangement | 4-6-0 (Ten-wheeler) |
| Gauge | 0 mm |
Dimensions and weights
| Property | Caledonian classes 49 and 903 “Cardean”superheated |
|---|---|
| Wheelbase | 8.74 m |
| Total wheelbase | 17.32 m |
| Service mass | 67.4 t |
| Adhesion mass | 55.8 t |
| Total mass | 125.3 t |
| Rigid wheelbase | 4.57 m |
| Water capacity | 22,731 l |
| Fuel capacity | 5.1 t (coal) |
Boiler
| Property | Caledonian classes 49 and 903 “Cardean”superheated |
|---|---|
| Grate area | 2.415 m² |
| Firebox surface | 13.773 m² |
| Tube heating surface | 154.753 m² |
| Evaporative heating surface | 168.526 m² |
| Superheater surface | 47.938 m² |
| Total heating surface | 216.5 m² |
Power plant
| Property | Caledonian classes 49 and 903 “Cardean”superheated |
|---|---|
| Driver diameter | 1,981 mm |
| Boiler pressure | 12.1 bar |
| Expansion type | simple expansion |
| Cylinders | two, 527 x 660 mm |
Power
| Property | Caledonian classes 49 and 903 “Cardean”superheated |
|---|---|
| Power source | steam |
| Estimated power | 802 kW (1,090 PS) |
| Starting effort | 95.0 kN |
Calculated values
| Property | Caledonian classes 49 and 903 “Cardean”superheated |
|---|---|
| Factor of adhesion | 1 : 5.76 |
| Optimal speed | 51 km/h |
| Power-to-weight ratio | 11.9 kW/t |
| Heating Surface Equivalent | 333.3 m² |
| Cylinder volume/HSE | 1 : 864.65 |
| Adhesive weight/Total | 1 : 1.21 |
| Tractive force/Heating surface | 1 : 9.16 |
| Grate area/Heating surface | 1 : 89.63 |
| Firebox/Tube surface | 1 : 11.24 |
| Total/Superheater | 1 : 3.52 |
