Hungarian State 2-4-0 Locomotives in Hungary

Class Details by Steve Llanso of Sweat House Media

Class II/ 238 (Locobase 1548)

It's somewhat surprising that as many as 46 of this class remained in service so late, but after the dissolution of the Austro-Hungarian Empire in 1918, 10 were transferred to Romania and 14 to Yugoslavia while 22 remained in Hungary.

P[eter] M[ichael] Kalla-Bishop, Hungarian notes the low top speed of 34 mph, "which even in Hungary was rather slow for a principal passenger train locomotive". The fault may have lay in a short wheelbase that induced swaying at even moderate speeds. In 1880, 6 had their driving wheelbase increased to 8' 2 1/2", which cut into firebox heating surface and grate area but allowed a top speed of 43 mph. These were the class 240, which operated on the Szabadka branch line until 5 were sent over to Yugoslavia in 1918.

Principal Dimensions by Steve Llanso of Sweat House Media

ClassII/ 238
Locobase ID1548
RailroadHungarian State
Number in Class64
Road Numbers238.001-58
Number Built64
Valve Gear
Locomotive Length and Weight
Driver Wheelbase (ft / m) 5.20 / 1.58
Engine Wheelbase (ft / m)
Ratio of driving wheelbase to overall engine wheelbase
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)59,136 / 26,824
Engine Weight (lbs / kg)87,360 / 39,626
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)49 / 24.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)59.50 / 1510
Boiler Pressure (psi / kPa)142 / 10
High Pressure Cylinders (dia x stroke) (in / mm)15.7" x 24.9" / 400x630
Tractive Effort (lbs / kg)12,451 / 5647.69
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.75
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)
Firebox Area (sq ft / m2)
Grate Area (sq ft / m2)17.65 / 1.64
Evaporative Heating Surface (sq ft / m2)1388 / 129
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1388 / 129
Evaporative Heating Surface/Cylinder Volume248.78
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2506
Same as above plus superheater percentage2506
Same as above but substitute firebox area for grate area
Power L1
Power MT

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Wes Barris