Latvian State Railway 2-4-2 Locomotives in Latvia

Class Details by Steve Llanso of Sweat House Media

Class Bt (Locobase 1305)

Data from A E Durrant, Locomotives of Eastern Europe (New York: Augustus M Kelley, Publishers, 1966), pp. 147, 150. (Thanks to Wes Barris for his 9 November 2021 noting the complete absence of information in the original entry.) Works numbers were 23089-23091.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID1305
RailroadLatvian State Railway
Number in Class3
Road NumbersBt 55-Bt 57
Number Built3
BuilderHenschel & Sohn
Valve Gear
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)
Weight on Drivers (lbs / kg)76,721 / 34,800
Engine Weight (lbs / kg)149,914 / 68,000
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)149,914 / 68,000
Tender Water Capacity (gals / ML)
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)64 / 32
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)67.70 / 1720
Boiler Pressure (psi / kPa)213.20 / 14.70
High Pressure Cylinders (dia x stroke) (in / mm)16.93" x 24.8" / 430x630
Tractive Effort (lbs / kg)19,028 / 8630.97
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.03
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)12.92 / 1.20
Evaporative Heating Surface (sq ft / m2)1055 / 98
Superheating Surface (sq ft / m2)377 / 35
Combined Heating Surface (sq ft / m2)1432 / 133
Evaporative Heating Surface/Cylinder Volume163.27
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2755
Same as above plus superheater percentage3471
Same as above but substitute firebox area for grate area
Power L1
Power MT

All material Copyright ©
Wes Barris