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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...
General
| Property | Midland class 1000 No. 1000 etc. |
|---|---|
| Built | 1902-1909 |
| Manufacturers | Derby |
| Wheel arrangement | 4-4-0 (American) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Midland class 1000 No. 1000 etc. |
|---|---|
| Length | 18.54 m |
| Wheelbase | 7.39 m |
| Rigid wheelbase | 2.92 m |
| Total wheelbase | 14.71 m |
| Empty weight | 55.2 t |
| Service weight | 59.5 t |
| Adhesive weight | 38.9 t |
| Total weight | 113.5 t |
| Water capacity | 15,910 l |
| Fuel capacity | 7.8 t (coal) |
Boiler
| Property | Midland class 1000 No. 1000 etc. |
|---|---|
| Grate area | 2.64 m² |
| Firebox surface | 14.2 m² |
| Tube heating surface | 132 m² |
| Evaporative heating surface | 146.2 m² |
| Total heating surface | 146.2 m² |
Power plant
| Property | Midland class 1000 No. 1000 etc. |
|---|---|
| Driver diameter | 2,134 mm |
| Boiler pressure | 15.2 bar |
| Expansion type | compound |
| Cylinders | three, HP: 483 x 660 mm and LP: 533 x 660 mm |
Power
| Property | Midland class 1000 No. 1000 etc. |
|---|---|
| Power source | steam |
| Estimated power | 708 kW (963 PS) |
| Starting effort | 76.7 kN |
| Starting effort simple | 92.0 kN |
Calculated values
| Property | Midland class 1000 No. 1000 etc. |
|---|---|
| Factor of adhesion | 1 : 4.97 |
| Optimal speed | 56 km/h |
| Power-to-weight ratio | 11.9 kW/t |
| Heating Surface Equivalent | 217.2 m² |
| Cylinder volume/HSE | 1 : 1,343.83 |
| Adhesive weight/Total | 1 : 1.53 |
| Tractive force/Heating surface | 1 : 10.95 |
| Grate area/Heating surface | 1 : 55.38 |
| Firebox/Tube surface | 1 : 9.30 |
