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London & South Western class 700 “Black Motor”
In 1897 Drummond had 30 freight locomotives built, which he had designed while still with the Caledonian. Construction eventually took place at Dübs in Scotland and they were nicknamed “Black Motors”. From 1919 all lo...
| London & South Western class 700 “Black Motor”Remove | |
|---|---|
| Variant | as built |
| Built | 1897 |
| Manufacturers | Dübs & Co. |
| Wheel arrangement | C |
| Gauge | 1435 mm |
| Length | 8423 mm |
| Service mass | 43436 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | London & South Western class 700 “Black Motor”as built |
|---|---|
| Built | 1897 |
| Manufacturers | Dübs & Co. |
| Wheel arrangement | 0-6-0 (Six-coupled) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | London & South Western class 700 “Black Motor”as built |
|---|---|
| Length | 8.42 m |
| Length loco | 16.03 m |
| Wheelbase | 5.03 m |
| Total wheelbase | 11.91 m |
| Empty mass | 39.2 t |
| Service mass | 43.4 t |
| Adhesion mass | 43.4 t |
| Total mass | 80.7 t |
| Rigid wheelbase | 5.03 m |
| Axle load | 16.6 t |
| Water capacity | 15,910 l |
Boiler
| Property | London & South Western class 700 “Black Motor”as built |
|---|---|
| Grate area | 1.892 m² |
| Firebox surface | 11.52 m² |
| Tube heating surface | 99.128 m² |
| Evaporative heating surface | 110.648 m² |
| Total heating surface | 110.6 m² |
Power plant
| Property | London & South Western class 700 “Black Motor”as built |
|---|---|
| Driver diameter | 1,549 mm |
| Boiler pressure | 12.1 bar |
| Expansion type | simple expansion |
| Cylinders | two, 470 x 660 mm |
Power
| Property | London & South Western class 700 “Black Motor”as built |
|---|---|
| Power source | steam |
| Estimated power | 522 kW (710 PS) |
| Starting effort | 96.5 kN |
Calculated values
| Property | London & South Western class 700 “Black Motor”as built |
|---|---|
| Factor of adhesion | 1 : 4.41 |
| Optimal speed | 34 km/h |
| Power-to-weight ratio | 12.0 kW/t |
| Heating Surface Equivalent | 168.2 m² |
| Cylinder volume/HSE | 1 : 1,361.41 |
| Adhesive weight/Total | 1 : 1.00 |
| Tractive force/Heating surface | 1 : 18.22 |
| Grate area/Heating surface | 1 : 58.48 |
| Firebox/Tube surface | 1 : 8.60 |
