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Bulgarian State Railway class 01
The class 01 of the Bulgarian State Railway was the first class in the Bulgarian standardization program. It was a Mikado express locomotive designed for mountainous lines. Like all these standard locomotives, it had ...
General
| Property | Bulgarian State Railway class 01Remove |
|---|---|
| Built | 1930-1935 |
| Manufacturers | Hanomag, Fablok, Henschel, Borsig, SLM |
| Wheel arrangement | 2-8-2 (Mikado) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Bulgarian State Railway class 01Remove |
|---|---|
| Length | 22.40 m |
| Length loco | 14.30 m |
| Wheelbase | 11.50 m |
| Rigid wheelbase | 3.80 m |
| Total wheelbase | 18.55 m |
| Empty weight | 90.4 t |
| Service weight | 99.4 t |
| Adhesive weight | 68 t |
| Axle load | 16.9 t |
| Total weight | 168.8 t |
| Water capacity | 30,000 l |
| Fuel capacity | 11 t (coal) |
Boiler
| Property | Bulgarian State Railway class 01Remove |
|---|---|
| Grate area | 4.8 m² |
| Firebox surface | 17.5 m² |
| Tube heating surface | 206.5 m² |
| Evaporative heating surface | 224 m² |
| Superheater surface | 84 m² |
| Total heating surface | 308.0 m² |
Power plant
| Property | Bulgarian State Railway class 01Remove |
|---|---|
| Driver diameter | 1,650 mm |
| Boiler pressure | 16 bar |
| Expansion type | simple expansion |
| Cylinders | two, 640 x 700 mm |
Power
| Property | Bulgarian State Railway class 01Remove |
|---|---|
| Power source | steam |
| Estimated power | 1,550 kW (2,107 PS) |
| Top speed | 90 km/h |
| Starting effort | 236.3 kN |
Calculated values
| Property | Bulgarian State Railway class 01Remove |
|---|---|
| Factor of adhesion | 1 : 2.82 |
| Optimal speed | 40 km/h |
| Power-to-weight ratio | 15.6 kW/t |
| Heating Surface Equivalent | 479.5 m² |
| Cylinder volume/HSE | 1 : 939.27 |
| Adhesive weight/Total | 1 : 1.46 |
| Tractive force/Heating surface | 1 : 16.03 |
| Grate area/Heating surface | 1 : 64.17 |
| Firebox/Tube surface | 1 : 11.80 |
| Total/Superheater | 1 : 2.67 |
