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East Broad Top No. 12
The East Broad Top operated six Mikados, all of which survive to this day. The oldest of these is No. 12, which was christened “Millie”. Like her newer sisters, she had 48-inch diameter drivers, but was lighter and ha...
| East Broad Top No. 12Remove | |
|---|---|
| Variant | Standard |
| Built | 1911 |
| Manufacturers | Baldwin |
| Wheel arrangement | 1D1 |
| Gauge | 914 mm |
| Length | |
| Service mass | 50802 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | East Broad Top No. 12 Standard Remove |
|---|---|
| Built | 1911 |
| Manufacturers | Baldwin |
| Wheel arrangement | 2-8-2 (Mikado) |
| Gauge | 914 mm |
Dimensions and weights
| Property | East Broad Top No. 12 Standard Remove |
|---|---|
| Wheelbase | 7.98 m |
| Total wheelbase | 14.90 m |
| Service mass | 50.8 t |
| Adhesion mass | 39.9 t |
| Total mass | 78 t |
| Rigid wheelbase | 3.96 m |
| Axle load | 10 t |
| Water capacity | 11,356 l |
| Fuel capacity | 5.4 t (coal) |
Boiler
| Property | East Broad Top No. 12 Standard Remove |
|---|---|
| Grate area | 2.991 m² |
| Firebox surface | 10.219 m² |
| Tube heating surface | 146.415 m² |
| Evaporative heating surface | 156.635 m² |
| Total heating surface | 156.6 m² |
Power plant
| Property | East Broad Top No. 12 Standard Remove |
|---|---|
| Driver diameter | 1,219 mm |
| Boiler pressure | 12.4 bar |
| Expansion type | simple expansion |
| Cylinders | two, 432 x 610 mm |
Power
| Property | East Broad Top No. 12 Standard Remove |
|---|---|
| Power source | steam |
| Estimated power | 597 kW (812 PS) |
| Starting effort | 98.3 kN |
Calculated values
| Property | East Broad Top No. 12 Standard Remove |
|---|---|
| Factor of adhesion | 1 : 3.98 |
| Optimal speed | 37 km/h |
| Power-to-weight ratio | 11.8 kW/t |
| Heating Surface Equivalent | 207.7 m² |
| Cylinder volume/HSE | 1 : 859.47 |
| Adhesive weight/Total | 1 : 1.27 |
| Tractive force/Heating surface | 1 : 13.11 |
| Grate area/Heating surface | 1 : 52.37 |
| Firebox/Tube surface | 1 : 14.33 |
