Rostov-Vladikavkaz Railway series А
Russia 1892 533 produced
The Vladikavkaz Railway was convinced that an express locomotive needed a leading bogie. Thus, instead of the 2-6-0 wheel arrangement, the 4-6-0 wheel arrangement was chosen and the series A was designed with it. These were two-cylinder compound machines, of which six were manufactured in Kolomna in 1892. The production machines were slightly heavier with a larger low-pressure cylinder. Their production started in 1894 also at German manufacturers. Some of the locomotives were later oil-fired.
Technical data
General
| Property | coal | oil |
|---|---|---|
| Built | 1892, 1894-1907 | |
| Manufacturers | Kolomna, Hanomag, Henschel, Sormovo, Luhansk, Kharkiv | |
| Wheel arrangement | 4-6-0 (Ten-wheeler) | |
| Gauge | 1,520 mm (Russian broad gauge) | |
Dimensions and weights
| Property | coal | oil |
|---|---|---|
| Length loco | 10.44 m | |
| Wheelbase | 8.03 m | |
| Total wheelbase | 13.90 m | |
| Empty mass | 55.2 t | 57.8 t |
| Service mass | 61 t | 63.6 t |
| Adhesion mass | 39.8 t | 43.8 t |
| Total mass | 96.7 t | 99.2 t |
| Rigid wheelbase | 4.31 m | |
| Axle load | 13.4 t | 14.6 t |
| Water capacity | 19,400 l | 15,000 l |
| Fuel capacity | 4,300 l (oil) | |
Boiler
| Property | coal | oil |
|---|---|---|
| Grate area | 2.16 m² | |
| Firebox surface | 10.95 m² | |
| Tube heating surface | 141.49 m² | |
| Evaporative heating surface | 152.44 m² | |
| Total heating surface | 152.4 m² | |
Power plant
| Property | coal | oil |
|---|---|---|
| Driver diameter | 1,830 mm | |
| Boiler pressure | 12 bar | |
| Expansion type | compound | |
| Cylinders | two, HP: 500 x 650 mm and LP: 730 x 650 mm | |
Power
| Property | coal | oil |
|---|---|---|
| Power source | steam | |
| Estimated power | 575 kW (782 PS) | 625 kW (850 PS) |
| Top speed | 100 km/h | |
| Starting effort | 61.7 kN | |
| Starting effort simple | 74.0 kN | |
Calculated values
| Property | coal | oil |
|---|---|---|
| Factor of adhesion | 1 : 6.33 | 1 : 6.96 |
| Optimal speed | 56 km/h | 63 km/h |
| Power-to-weight ratio | 9.4 kW/t | 9.8 kW/t |
| Heating Surface Equivalent | 207.2 m² | |
| Cylinder volume/HSE | 1 : 1,272.51 | |
| Adhesive weight/Total | 1 : 1.53 | 1 : 1.45 |
| Tractive force/Heating surface | 1 : 8.45 | |
| Grate area/Heating surface | 1 : 70.57 | |
| Firebox/Tube surface | 1 : 12.92 | |
