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London, Midland & Scottish Garratt
The LMS was the only British railway to order greater numbers of large Garratts. Although the Midland Railway's small engine policy had worked for most of the time, they needed much more powerful locomotives when even...
General
| Property | London, Midland & Scottish GarrattRemove |
|---|---|
| Built | 1927, 1930 |
| Manufacturers | Beyer, Peacock & Co. |
| Wheel arrangement | 2-6-0+0-6-2 (Double Mogul (Garratt)) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | London, Midland & Scottish GarrattRemove |
|---|---|
| Length | 26.78 m |
| Rigid wheelbase | 5.03 m |
| Total wheelbase | 24.08 m |
| Service weight | 151.1 t |
| Adhesive weight | 117.9 t |
| Axle load | 20.6 t |
| Water capacity | 20,456 l |
| Fuel capacity | 7.1 t (coal) |
Boiler
| Property | London, Midland & Scottish GarrattRemove |
|---|---|
| Grate area | 4.134 m² |
| Firebox surface | 17.001 m² |
| Tube heating surface | 181.533 m² |
| Evaporative heating surface | 198.534 m² |
| Superheater surface | 46.452 m² |
| Total heating surface | 245.0 m² |
Power plant
| Property | London, Midland & Scottish GarrattRemove |
|---|---|
| Driver diameter | 1,600 mm |
| Boiler pressure | 13.1 bar |
| Expansion type | simple expansion |
| Cylinders | four, 470 x 660 mm |
Power
| Property | London, Midland & Scottish GarrattRemove |
|---|---|
| Power source | steam |
| Estimated power | 1,119 kW (1,521 PS) |
| Starting effort | 202.9 kN |
Calculated values
| Property | London, Midland & Scottish GarrattRemove |
|---|---|
| Factor of adhesion | 1 : 5.70 |
| Optimal speed | 34 km/h |
| Power-to-weight ratio | 7.4 kW/t |
| Heating Surface Equivalent | 376.4 m² |
| Cylinder volume/HSE | 1 : 1,216.94 |
| Adhesive weight/Total | 1 : 1.28 |
| Tractive force/Heating surface | 1 : 17.30 |
| Grate area/Heating surface | 1 : 59.26 |
| Firebox/Tube surface | 1 : 10.68 |
| Total/Superheater | 1 : 4.27 |
