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London & North Eastern class B17 “Sandringham”
The class B17 was a light yet powerful 4-6-0 express locomotive designed by Nigel Gresley for the LNER in the late twenties. They were to haul the heaviest express trains on the Great Eastern Main Line, but had to com...
| London & North Eastern class B17 “Sandringham”Remove | |
|---|---|
| Variant | Standard |
| Built | 1928-1937 |
| Manufacturers | North British;Darlington;Robert Stephenson & Co. |
| Wheel arrangement | 2C |
| Gauge | 1435 mm |
| Length | 18948 mm |
| Service mass | 78490 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | London & North Eastern class B17 “Sandringham” Standard Remove |
|---|---|
| Built | 1928-1937 |
| Manufacturers | North British, Darlington, Robert Stephenson & Co. |
| Wheel arrangement | 4-6-0 (Ten-wheeler) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | London & North Eastern class B17 “Sandringham” Standard Remove |
|---|---|
| Length | 18.95 m |
| Wheelbase | 8.46 m |
| Total wheelbase | 14.73 m |
| Service mass | 78.5 t |
| Adhesion mass | 55.2 t |
| Total mass | 118.5 t |
| Axle load | 18.7 t |
| Water capacity | 16,822 l |
| Fuel capacity | 4.6 t (coal) |
Boiler
| Property | London & North Eastern class B17 “Sandringham” Standard Remove |
|---|---|
| Grate area | 2.555 m² |
| Firebox surface | 15.608 m² |
| Tube heating surface | 140.098 m² |
| Evaporative heating surface | 155.706 m² |
| Superheater surface | 31.959 m² |
| Total heating surface | 187.7 m² |
Power plant
| Property | London & North Eastern class B17 “Sandringham” Standard Remove |
|---|---|
| Driver diameter | 2,032 mm |
| Boiler pressure | 13.8 bar |
| Expansion type | simple expansion |
| Cylinders | three, 444 x 660 mm |
Power
| Property | London & North Eastern class B17 “Sandringham” Standard Remove |
|---|---|
| Power source | steam |
| Estimated power | 1,268 kW (1,724 PS) |
| Starting effort | 112.9 kN |
Calculated values
| Property | London & North Eastern class B17 “Sandringham” Standard Remove |
|---|---|
| Factor of adhesion | 1 : 4.80 |
| Optimal speed | 69 km/h |
| Power-to-weight ratio | 16.2 kW/t |
| Heating Surface Equivalent | 297.7 m² |
| Cylinder volume/HSE | 1 : 1,032.85 |
| Adhesive weight/Total | 1 : 1.42 |
| Tractive force/Heating surface | 1 : 12.56 |
| Grate area/Heating surface | 1 : 73.45 |
| Firebox/Tube surface | 1 : 8.98 |
| Total/Superheater | 1 : 4.87 |
