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Midland class 480
Based on the class 240 locomotives, Matthew Kirtley developed the class 480. They had inside and outside frames, with the outside frames being curved. They later formed the basis for the class 700 with 17-inch cylinde...
General
| Property | Midland class 480Remove |
|---|---|
| Built | 1863-1869 |
| Manufacturers | Derby, Dübs & Co., Robert Stephenson & Co., Kitson & Co., Sharp, Stewart & Co., Yorkshire Engine Co. |
| Wheel arrangement | 0-6-0 (Six-coupled) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Midland class 480Remove |
|---|---|
| Wheelbase | 5.00 m |
| Rigid wheelbase | 5.00 m |
| Service weight | 35.1 t |
| Adhesive weight | 35.1 t |
| Axle load | 11.7 t |
Boiler
| Property | Midland class 480Remove |
|---|---|
| Grate area | 1.431 m² |
| Firebox surface | 7.618 m² |
| Tube heating surface | 94.761 m² |
| Evaporative heating surface | 102.379 m² |
| Total heating surface | 102.4 m² |
Power plant
| Property | Midland class 480Remove |
|---|---|
| Driver diameter | 1,575 mm |
| Boiler pressure | 9.7 bar |
| Expansion type | simple expansion |
| Cylinders | two, 419 x 610 mm |
Power
| Property | Midland class 480Remove |
|---|---|
| Power source | steam |
| Estimated power | 261 kW (355 PS) |
| Starting effort | 55.8 kN |
Calculated values
| Property | Midland class 480Remove |
|---|---|
| Factor of adhesion | 1 : 6.16 |
| Optimal speed | 29 km/h |
| Power-to-weight ratio | 7.4 kW/t |
| Heating Surface Equivalent | 140.5 m² |
| Cylinder volume/HSE | 1 : 1,197.35 |
| Adhesive weight/Total | 1 : 1.00 |
| Tractive force/Heating surface | 1 : 11.38 |
| Grate area/Heating surface | 1 : 71.54 |
| Firebox/Tube surface | 1 : 12.44 |
