BBÖ 114

The BBÖ 114 was a class of one Austrian three-cylinder 2-8-4 express train steam locomotive.

BBÖ 114 DRB 12.1 ÖBB 112
Works' photograph of 114.01
Type and origin Builder Wiener Neustädter Lokomotivfabrik Build date 1929 Total produced 1
Specifications Configuration: ​  • Whyte 2-8-4 Gauge 1,435 mm (4 ft 8+1⁄2 in) Leading dia. 1,034 mm (3 ft 4+3⁄4 in) Driver dia. 1,940 mm (6 ft 4+3⁄8 in) Trailing dia. 1,034 mm (3 ft 4+3⁄4 in) Wheelbase:  • Overall 12,635 mm (41 ft 5+1⁄2 in)  • incl. tender 19,403 mm (63 ft 8 in) Length: ​  • Over beams 22,613 mm (74 ft 2+1⁄4 in) Height 4,650 mm (15 ft 3+1⁄8 in) Adhesive weight 70.2 t (69.1 long tons; 77.4 short tons) Service weight 117.2 t (115.3 long tons; 129.2 short tons) Tender type 84 Fuel capacity 8.0 t (17,600 lb) coal Water cap. 29.50 m3 (6,490 imp gal; 7,790 US gal) Boiler: ​ No. of heating tubes 151 No. of smoke tubes 38 Boiler pressure 15 kgf/cm2 (1.47 MPa; 213 lbf/in2) Heating surface:  • Firebox 4.72 m2 (50.8 sq ft)  • Radiative 18.70 m2 (201.3 sq ft)  • Evaporative 262.00 m2 (2,820.1 sq ft) Superheater: ​  • Heating area 91.00 m2 (979.5 sq ft) Cylinders 3 Cylinder size 530 mm (20+7⁄8 in) Piston stroke 720 mm (28+3⁄8 in)
Performance figures Maximum speed 100 km/h (62 mph)
Career Numbers BBÖ 114.01 DRB 12 101 ÖBB 112.01 Retired 1953

At the same time as plans were developed for the two-cylinder 214 series, design emerged in the Wiener Neustädter Lokomotivfabrik for a three-cylinder engine. In order to be able to compare the two designs it was decided to build a prototype of each one. Number 114.01 was built in the Wiener Neustädter Lokomotivfabrik and delivered in 1929.

In general the advantage of three-cylinder locomotives lies in their more powerful torque and a better balance of the rotating masses, which leads to lower wear and tear. The disadvantage is a higher fuel consumption due to the three steam engines. This was true in the case of 114.01 which in comparison with locomotive 214.01 had a 9% higher consumption of coal. Difficult access to the inside gear and the associated poor maintainability of locomotive 114.01, combined with the fact that 214.01 did better in the trial runs, led to the 214s going into series production. Number 114.01 remained in service with the BBÖ as a one-off. A visible difference from the 214s is the visible parts of the unusual Marshall valve gear with its rotating camshaft.

In 1938 the Deutsche Reichsbahn redesignated this locomotive as number 12 101.

Number 114.01 was employed on the locomotive schedules (Umlaufplan) of the 214s and, amongst other things, was allowed to head the first Arlberg Orient Express after the Second World War. In 1948 it was converted to oil-firing due to the shortage of coal. On 6 August 1949 the middle cylinder broke. Due to the irreparable damage the locomotive was sidelined and dismantled in 1953.