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Midland class 1000
In 1902, the Midland Railway had five express locomotives built, numbered 2631 to 2635, designed by Samuel Waite Johnson. The special feature was the power plant, which consisted of three cylinders with compound actio...
| Midland class 1000Remove | |
|---|---|
| Variant | No. 2631-2635 |
| Built | 1902 |
| Manufacturers | Derby |
| Wheel arrangement | 2B |
| Gauge | 1435 mm |
| Length | 18542 mm |
| Service mass | 59450 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Midland class 1000No. 2631-2635 |
|---|---|
| Built | 1902 |
| Manufacturers | Derby |
| Wheel arrangement | 4-4-0 (American) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Midland class 1000No. 2631-2635 |
|---|---|
| Length | 18.54 m |
| Wheelbase | 7.39 m |
| Total wheelbase | 14.71 m |
| Empty mass | 55.2 t |
| Service mass | 59.5 t |
| Adhesion mass | 38.9 t |
| Total mass | 113.5 t |
| Rigid wheelbase | 2.92 m |
| Water capacity | 15,910 l |
| Fuel capacity | 7.8 t (coal) |
Boiler
| Property | Midland class 1000No. 2631-2635 |
|---|---|
| Grate area | 2.638 m² |
| Firebox surface | 14.196 m² |
| Tube heating surface | 121.257 m² |
| Evaporative heating surface | 135.453 m² |
| Total heating surface | 135.5 m² |
Power plant
| Property | Midland class 1000No. 2631-2635 |
|---|---|
| Driver diameter | 2,134 mm |
| Boiler pressure | 13.4 bar |
| Expansion type | compound |
| Cylinders | three, HP: 483 x 660 mm and LP: 533 x 660 mm |
Power
| Property | Midland class 1000No. 2631-2635 |
|---|---|
| Power source | steam |
| Estimated power | 671 kW (912 PS) |
| Starting effort | 68.0 kN |
| Starting effort simple | 81.5 kN |
Calculated values
| Property | Midland class 1000No. 2631-2635 |
|---|---|
| Factor of adhesion | 1 : 5.61 |
| Optimal speed | 61 km/h |
| Power-to-weight ratio | 11.3 kW/t |
| Heating Surface Equivalent | 206.4 m² |
| Cylinder volume/HSE | 1 : 1,413.92 |
| Adhesive weight/Total | 1 : 1.53 |
| Tractive force/Heating surface | 1 : 10.48 |
| Grate area/Heating surface | 1 : 51.35 |
| Firebox/Tube surface | 1 : 8.54 |
