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Nippon Tetsudō Bbt2/5
In 1897 Baldwin delivered 24 Atlantic-type locomotives to the Nippon Tetsudo, remaining the only Japanese locomotives of this wheel arrangement. In design terms, they followed a typical American Atlantic pattern, but ...
| Nippon Tetsudō Bbt2/5Remove | |
|---|---|
| Variant | Standard |
| Built | 1897 |
| Manufacturers | Baldwin |
| Wheel arrangement | 2B1 |
| Gauge | 1067 mm |
| Length | 16294 mm |
| Service mass | 45804 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Nippon Tetsudō Bbt2/5 Standard Remove |
|---|---|
| Built | 1897 |
| Manufacturers | Baldwin |
| Wheel arrangement | 4-4-2 (Atlantic) |
| Gauge | 1,067 mm |
Dimensions and weights
| Property | Nippon Tetsudō Bbt2/5 Standard Remove |
|---|---|
| Length | 16.29 m |
| Wheelbase | 6.86 m |
| Total wheelbase | 14.01 m |
| Service mass | 45.8 t |
| Adhesion mass | 23.6 t |
| Total mass | 73 t |
| Rigid wheelbase | 1.83 m |
| Axle load | 13.8 t |
| Water capacity | 11,356 l |
| Fuel capacity | 5.4 t (coal) |
Boiler
| Property | Nippon Tetsudō Bbt2/5 Standard Remove |
|---|---|
| Grate area | 2.787 m² |
| Firebox surface | 9.118 m² |
| Tube heating surface | 135.81 m² |
| Evaporative heating surface | 144.929 m² |
| Total heating surface | 144.9 m² |
Power plant
| Property | Nippon Tetsudō Bbt2/5 Standard Remove |
|---|---|
| Driver diameter | 1,422 mm |
| Boiler pressure | 12.4 bar |
| Expansion type | simple expansion |
| Cylinders | two, 406 x 559 mm |
Power
| Property | Nippon Tetsudō Bbt2/5 Standard Remove |
|---|---|
| Power source | steam |
| Estimated power | 597 kW (812 PS) |
| Starting effort | 68.4 kN |
Calculated values
| Property | Nippon Tetsudō Bbt2/5 Standard Remove |
|---|---|
| Factor of adhesion | 1 : 3.38 |
| Optimal speed | 53 km/h |
| Power-to-weight ratio | 13.0 kW/t |
| Heating Surface Equivalent | 190.5 m² |
| Cylinder volume/HSE | 1 : 760.94 |
| Adhesive weight/Total | 1 : 1.94 |
| Tractive force/Heating surface | 1 : 9.86 |
| Grate area/Heating surface | 1 : 52.00 |
| Firebox/Tube surface | 1 : 14.89 |
