North Eastern classes C and C1
London & North Eastern class J21
Between 1886 and 1894 the North Eastern Railway had 171 class C goods locomotives built with compound engines. However, these had an insufficient reliability and excessive consumption. At the same time, 30 class C1 locomotives were built, which had a simple engine. Ultimately, between 1901 and 1913, all class C locomotives were rebuilt to class C1 and the entire class was then renamed C.
In 1923 all locomotives came to the LNER and became class J21. The first few locomotives were withdrawn in 1929, but most were still in use in 1943. British Railways took over 81 in 1948, the last of which were withdrawn in 1962. Today only the locomotive with the BR number 65033 still exists, which is being restored to operational condition in Loughborough for several years.
Technical data
General
| Property | C | C1 | C1 superheated |
|---|---|---|---|
| Built | 1886-1894 | 1886-1894, 1901-1913 | 1914-1925 |
| Manufacturers | Gateshead, Darlington | ||
| Wheel arrangement | 0-6-0 (Six-coupled) | ||
| Gauge | 1,435 mm (Standard gauge) | ||
Dimensions and weights
| Property | C | C1 | C1 superheated |
|---|---|---|---|
| Wheelbase | 5.03 m | ||
| Total wheelbase | 11.53 m | ||
| Service mass | 42.5 t | 42.2 t | 43.1 t |
| Adhesion mass | 42.5 t | 42.2 t | 43.1 t |
| Total mass | 75 t | 74.7 t | 80.5 t |
| Rigid wheelbase | 5.03 m | ||
| Axle load | 14.5 t | 15.7 t | |
Boiler
| Property | C | C1 | C1 superheated |
|---|---|---|---|
| Grate area | 1.598 m² | ||
| Firebox surface | 10.219 m² | 10.034 m² | |
| Tube heating surface | 95.319 m² | 94.39 m² | 86.772 m² |
| Evaporative heating surface | 105.538 m² | 104.609 m² | 96.805 m² |
| Total heating surface | 105.5 m² | 104.6 m² | 113.9 m² |
| Superheater surface | 17.094 m² | ||
Power plant
| Property | C | C1 | C1 superheated |
|---|---|---|---|
| Driver diameter | 1,556 mm | ||
| Boiler pressure | 11 bar | 9.7 bar | 11 bar |
| Expansion type | compound | simple expansion | |
| Cylinders | two, HP: 457 x 610 mm and LP: 660 x 610 mm | two, 457 x 610 mm | two, 483 x 610 mm |
Power
| Property | C | C1 | C1 superheated |
|---|---|---|---|
| Power source | steam | ||
| Estimated power | 433 kW (589 PS) | 388 kW (528 PS) | 559 kW (760 PS) |
| Starting effort | 51.9 kN | 67.2 kN | 85.6 kN |
| Starting effort simple | 62.3 kN | ||
Calculated values
| Property | C | C1 | C1 superheated |
|---|---|---|---|
| Factor of adhesion | 1 : 8.03 | 1 : 6.16 | 1 : 4.94 |
| Optimal speed | 51 km/h | 35 km/h | 40 km/h |
| Power-to-weight ratio | 10.2 kW/t | 9.2 kW/t | 13.0 kW/t |
| Heating Surface Equivalent | 156.6 m² | 155.7 m² | 181.2 m² |
| Cylinder volume/HSE | 1 : 1,305.50 | 1 : 1,285.52 | 1 : 1,231.03 |
| Adhesive weight/Total | 1 : 1.00 | ||
| Tractive force/Heating surface | 1 : 10.27 | 1 : 13.42 | 1 : 15.69 |
| Grate area/Heating surface | 1 : 66.04 | 1 : 65.46 | 1 : 71.28 |
| Firebox/Tube surface | 1 : 9.33 | 1 : 9.24 | 1 : 8.65 |
| Total/Superheater | 1 : 5.66 | ||
