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 Middle Run Media | |
|---|---|
| Class | Bt |
| Locobase ID | 1305 |
| Railroad | Latvian State Railway |
| Country | Latvia |
| Whyte | 2-4-2T |
| Number in Class | 3 |
| Road Numbers | Bt 55-Bt 57 |
| Gauge | Std |
| Number Built | 3 |
| Builder | Henschel & Sohn |
| Year | 1936 |
| 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) | |
| 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 / 1470 |
| 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 Volume | 163.27 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2755 |
| Same as above plus superheater percentage | 3471 |
| Same as above but substitute firebox area for grate area | |
| Power L1 | |
| Power MT | |