Data from "Lokomotivska serijia 61", Skice I Podatci Lokomotiva (Zagreb: JDZ, 1955), p.41; and A[nthony] E[dward] Durrant, The Steam Locomotives of Eastern Europe (Newton Abbot:David & Charles, 1966), supplemented by Roy V Wright (Ed.) 1922 Locomotive Cyclopedia of American Practice, Sixth Edition (New York: Simmons-Boardman Publishing Company, 1922), p. 1004. Works numbers were 55548-55562 in 1915.
Freight Prairies supplied to Serbia, some of which were operated by the British Army at Salonika in Greece.
Data from "Lokomotiva serijia 04", Skice I Podatci Lokomotiva (Zagreb: JDZ, 1955), p. 27;A[nthony] E[dward] Durrant, The Steam Locomotives of Eastern Europe (Newton Abbot:David & Charles, 1966). Works numbers were 4785-4792 in 1912.
Similar to the O1s, but of earlier design and using saturated (i.e., not superheated) steam.
| Principal Dimensions by Steve Llanso of Middle Run Media | ||
|---|---|---|
| Class | 01/21 | 04 |
| Locobase ID | 1718 | 1713 |
| Railroad | Serbian State (JDZ) | Serbian State (JDZ) |
| Country | Serbia | Serbia |
| Whyte | 2-6-2 | 2-6-2 |
| Number in Class | 15 | 8 |
| Road Numbers | 01-015/21.001-21.015 | 151-158/004.001-004.007 |
| Gauge | Std | Std |
| Number Built | 15 | 8 |
| Builder | Alco-Schenectady | Schwartzkopff |
| Year | 1915 | 1912 |
| Valve Gear | Walschaert | Walschaert |
| Locomotive Length and Weight | ||
| Driver Wheelbase (ft / m) | 12 / 3.66 | |
| Engine Wheelbase (ft / m) | 29.50 / 8.99 | |
| Ratio of driving wheelbase to overall engine wheelbase | 0.41 | |
| Overall Wheelbase (engine & tender) (ft / m) | ||
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | ||
| Weight on Drivers (lbs / kg) | 89,824 / 40,744 | 96,342 / 43,700 |
| Engine Weight (lbs / kg) | 141,344 / 64,113 | 150,080 / 68,075 |
| 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) | 50 / 25 | 54 / 27 |
| Geometry Relating to Tractive Effort | ||
| Driver Diameter (in / mm) | 53.10 / 1349 | 72.80 / 1850 |
| Boiler Pressure (psi / kPa) | 181 / 1250 | 174 / 1200 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 19" x 24" / 483x610 | 13.78" x 25.59" / 350x650 |
| Low Pressure Cylinders (dia x stroke) (in / mm) | 21.65" x 25.59" / 550x650 | |
| Tractive Effort (lbs / kg) | 25,103 / 11386.54 | 14,051 / 6373.43 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.58 | 6.86 |
| Heating Ability | ||
| Tubes (number - dia) (in / mm) | ||
| Flues (number - dia) (in / mm) | ||
| Flue/Tube length (ft / m) | ||
| Firebox Area (sq ft / m2) | 136 / 12.63 | |
| Grate Area (sq ft / m2) | 27.55 / 2.56 | 32.28 / 3 |
| Evaporative Heating Surface (sq ft / m2) | 1450 / 134.71 | 1829 / 170 |
| Superheating Surface (sq ft / m2) | 353 / 32.79 | |
| Combined Heating Surface (sq ft / m2) | 1803 / 167.50 | 1829 / 170 |
| Evaporative Heating Surface/Cylinder Volume | 184.11 | 414.07 |
| Computations Relating to Power Output (More Information) | ||
| Robert LeMassena's Power Computation | 4987 | 5617 |
| Same as above plus superheater percentage | 5984 | 5617 |
| Same as above but substitute firebox area for grate area | 29,539 | |
| Power L1 | 10,794 | |
| Power MT | 794.78 | |