Czech State Railways 0-6-2 Locomotives in Czechoslovakia

Class Details by Steve Llanso of Sweat House Media

Class U37 (Locobase 7992)

Data confirmed from [], the Czech website.

Some confusing numbers for these engines that appear to be based on the U class of the Austrian State Railways. For one thing, the total evaporative surface seems to include the firebox surface added in twice. The other is a total engine weight almost double that of the Austrian engines.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID7992
RailroadCzech State Railways
Number in Class11
Road Numbers
Gauge76 cm
Number Built11
Valve GearHeusinger
Locomotive Length and Weight
Driver Wheelbase (ft / m)
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)14,771 / 6700
Weight on Drivers (lbs / kg)44,313 / 20,100
Engine Weight (lbs / kg)52,911 / 24,000
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)52,911 / 24,000
Tender Water Capacity (gals / ML)840 / 3.18
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 1.80 / 2
Minimum weight of rail (calculated) (lb/yd / kg/m)25 / 12.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)32.50 / 825
Boiler Pressure (psi / kPa)174 / 12
High Pressure Cylinders (dia x stroke) (in / mm)11.42" x 15.75" / 290x400
Tractive Effort (lbs / kg)9348 / 4240.19
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.74
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)10.66 / 3.25
Firebox Area (sq ft / m2)48.44 / 4.50
Grate Area (sq ft / m2)10.76 / 1
Evaporative Heating Surface (sq ft / m2)546 / 50.70
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)546 / 50.70
Evaporative Heating Surface/Cylinder Volume292.42
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1872
Same as above plus superheater percentage1872
Same as above but substitute firebox area for grate area8429
Power L13979
Power MT593.88

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