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London & North Eastern Thompson/Peppercorn class K1
The K1 was a mixed traffic locomotive designed for the LNER, but was only delivered directly to British Railways in 1949 and 1950. Since Edward Thompson was a fan of two-cylinder locomotives, he rebuilt a K4 from thre...
| London & North Eastern Thompson/Peppercorn class K1Remove | |
|---|---|
| Variant | Standard |
| Built | 1949-1950 |
| Manufacturers | North British |
| Wheel arrangement | 1C |
| Gauge | 1435 mm |
| Length | 18237 mm |
| Service mass | 67059 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | London & North Eastern Thompson/Peppercorn class K1 Standard Remove |
|---|---|
| Built | 1949-1950 |
| Manufacturers | North British |
| Wheel arrangement | 2-6-0 (Mogul) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | London & North Eastern Thompson/Peppercorn class K1 Standard Remove |
|---|---|
| Length | 18.24 m |
| Total wheelbase | 15.06 m |
| Service mass | 67.1 t |
| Adhesion mass | 57.8 t |
| Axle load | 19.5 t |
| Water capacity | 19,094 l |
| Fuel capacity | 7.6 t (coal) |
Boiler
| Property | London & North Eastern Thompson/Peppercorn class K1 Standard Remove |
|---|---|
| Grate area | 2.592 m² |
| Firebox surface | 15.608 m² |
| Tube heating surface | 115.2 m² |
| Evaporative heating surface | 130.808 m² |
| Superheater surface | 27.871 m² |
| Total heating surface | 158.7 m² |
Power plant
| Property | London & North Eastern Thompson/Peppercorn class K1 Standard Remove |
|---|---|
| Driver diameter | 1,575 mm |
| Boiler pressure | 15.5 bar |
| Expansion type | simple expansion |
| Cylinders | two, 508 x 660 mm |
Power
| Property | London & North Eastern Thompson/Peppercorn class K1 Standard Remove |
|---|---|
| Power source | steam |
| Estimated power | 1,044 kW (1,419 PS) |
| Starting effort | 142.7 kN |
Calculated values
| Property | London & North Eastern Thompson/Peppercorn class K1 Standard Remove |
|---|---|
| Factor of adhesion | 1 : 3.97 |
| Optimal speed | 45 km/h |
| Power-to-weight ratio | 15.6 kW/t |
| Heating Surface Equivalent | 264.6 m² |
| Cylinder volume/HSE | 1 : 1,011.77 |
| Adhesive weight/Total | 1 : 1.16 |
| Tractive force/Heating surface | 1 : 18.78 |
| Grate area/Heating surface | 1 : 61.22 |
| Firebox/Tube surface | 1 : 7.38 |
| Total/Superheater | 1 : 4.69 |
