Emperor Ferdinand Northern Railway IIIc
Imperial-Royal State Railways class 27, Czechoslovak State Railways class 354.5, Hungarian State Railways class 331, and Yugoslav Railway class 112
The KFNB designated eleven 4-6-0 express locomotives that were built in Wiener Neustadt in 1902 and 1903 as class IIIc. Their area of operation was the line between Přerov and Ostrava in what is now the eastern Czech Republic. Their driving wheel diameter of just 1,500 mm enabled greater pulling power at the expense of speed.
The two batches of seven and four locomotives differed in that the second was slightly heavier. After the nationalisation, the kkStB initially designated as class 27, but after the First World War they all came to the ČSD. In 1939 they came to the MÁV and after the war back to the ČSD, which used them until 1949. However, one had come to Yugoslavia in the meantime.
Technical data
General
| Property | 801-807 | 808-811 |
|---|---|---|
| Built | 1902-1903 | |
| Manufacturers | Wiener Neustadt | |
| Wheel arrangement | 4-6-0 (Ten-wheeler) | |
| Gauge | 1,435 mm (Standard gauge) | |
Dimensions and weights
| Property | 801-807 | 808-811 |
|---|---|---|
| Length | 16.85 m | 17.47 m |
| Length loco | 10.21 m | 10.83 m |
| Wheelbase | 6.85 m | |
| Total wheelbase | 13.65 m | |
| Empty mass | 53.9 t | 54.8 t |
| Service mass | 60.1 t | 60.4 t |
| Adhesion mass | 41.7 t | 41 t |
| Total mass | 94.9 t | 95.5 t |
| Rigid wheelbase | 3.35 m | |
| Water capacity | 12,000 l | |
| Fuel capacity | 4 t (coal) | |
Boiler
| Property | 801-807 | 808-811 |
|---|---|---|
| Grate area | 2.8 m² | 2.9 m² |
| Firebox surface | 11.3 m² | 11.8 m² |
| Tube heating surface | 167.6 m² | |
| Evaporative heating surface | 178.9 m² | 179.4 m² |
| Total heating surface | 178.9 m² | 179.4 m² |
Power plant
| Property | 801-807 | 808-811 |
|---|---|---|
| Driver diameter | 1,500 mm | |
| Boiler pressure | 13 bar | |
| Expansion type | simple expansion | |
| Cylinders | two, 480 x 630 mm | |
Power
| Property | 801-807 | 808-811 |
|---|---|---|
| Power source | steam | |
| Estimated power | 700 kW (952 PS) | 715 kW (972 PS) |
| Top speed | 80 km/h | |
| Starting effort | 106.9 kN | |
Calculated values
| Property | 801-807 | 808-811 |
|---|---|---|
| Factor of adhesion | 1 : 3.83 | 1 : 3.76 |
| Optimal speed | 40 km/h | |
| Power-to-weight ratio | 11.6 kW/t | 11.8 kW/t |
| Heating Surface Equivalent | 235.4 m² | 238.4 m² |
| Cylinder volume/HSE | 1 : 968.58 | 1 : 956.39 |
| Adhesive weight/Total | 1 : 1.44 | 1 : 1.47 |
| Tractive force/Heating surface | 1 : 12.48 | 1 : 12.45 |
| Grate area/Heating surface | 1 : 63.89 | 1 : 61.86 |
| Firebox/Tube surface | 1 : 14.83 | 1 : 14.20 |
