Data from William Bay, Danmarks Damplokomotiver (1977). O 301-O 326 were produced by Borsig from 1896 to 1898; works numbers were:
1896 4520-4525
1897 4579-4584
1898 4645-4650, 4691-4698
Borsig's builder photograph showed a rangy profile under which turned four evenly spaced axles. The drivers flanked a low firebox; the leading drivers displayed its short eccentric links on the wheel hubs. Both supporting axles had relatively large diameter wheels. The rear axles traversed using a radial system.
Costruzioni Meccaniche Saronno, an Italian affiliate of Esslingen added the other 10 in 1901 (Esslingen works numbers 3167-3176.)
Data from WilliamBay, Danmarks Damplokomotiver (1977). Class data from []
The photograph on Jens Vesterdahl's Danish Steam Locomotive site -- [] (9 July 2003) -- shows a small tank engine with a huge dome. These were O class engines (Locobse 4013) that were superheated over a decade and more beginning in 1914. In that year, the DSB superheated 310, 313, 327, 328, and 330. 329 (1915), 1916 (323). Then a break to 1923 when 301, 318, 325 were updated and finally 317 and 335 were updated in 1928.
| Principal Dimensions by Steve Llanso of Middle Run Media | ||
|---|---|---|
| Class | O | O - superheated |
| Locobase ID | 4013 | 4014 |
| Railroad | Danske Statsbaner (DSB) | Danske Statsbaner (DSB) |
| Country | Denmark | Denmark |
| Whyte | 2-4-2T | 2-4-2T |
| Number in Class | 36 | 12 |
| Road Numbers | O 301-O 336 | |
| Gauge | Std | Std |
| Number Built | 36 | |
| Builder | several | DSB |
| Year | 1896 | 1914 |
| Valve Gear | Stephenson | |
| Locomotive Length and Weight | ||
| Driver Wheelbase (ft / m) | 7.97 / 2.43 | 7.97 / 2.43 |
| Engine Wheelbase (ft / m) | 21.75 / 6.63 | 21.75 / 6.63 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.37 | 0.37 |
| Overall Wheelbase (engine & tender) (ft / m) | 21.75 / 6.63 | 21.75 / 6.63 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | ||
| Weight on Drivers (lbs / kg) | 60,186 / 27,300 | 60,186 / 27,300 |
| Engine Weight (lbs / kg) | 115,522 / 52,400 | 118,829 / 53,900 |
| Tender Loaded Weight (lbs / kg) | ||
| Total Engine and Tender Weight (lbs / kg) | ||
| Tender Water Capacity (gals / ML) | 1716 / 6.50 | 1716 / 6.50 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 1.70 / 2 | 2.80 / 3 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 50 / 25 | 50 / 25 |
| Geometry Relating to Tractive Effort | ||
| Driver Diameter (in / mm) | 67.30 / 1710 | 68.10 / 1730 |
| Boiler Pressure (psi / kPa) | 145 / 1000 | 174 / 1200 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 16.93" x 24.02" / 430x610 | 16.93" x 24.02" / 430x610 |
| Tractive Effort (lbs / kg) | 12,608 / 5718.90 | 14,952 / 6782.12 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.77 | 4.03 |
| Heating Ability | ||
| Tubes (number - dia) (in / mm) | 140 - 1.89" / 48 | |
| Flues (number - dia) (in / mm) | ||
| Flue/Tube length (ft / m) | 11.32 / 3.45 | 11.29 / 3.44 |
| Firebox Area (sq ft / m2) | 86.62 / 8.05 | 86.62 / 8.05 |
| Grate Area (sq ft / m2) | 14.10 / 1.31 | 14.10 / 1.31 |
| Evaporative Heating Surface (sq ft / m2) | 785 / 72.97 | 624 / 58 |
| Superheating Surface (sq ft / m2) | 166 / 15.40 | |
| Combined Heating Surface (sq ft / m2) | 785 / 72.97 | 790 / 73.40 |
| Evaporative Heating Surface/Cylinder Volume | 125.43 | 99.71 |
| Computations Relating to Power Output (More Information) | ||
| Robert LeMassena's Power Computation | 2045 | 2453 |
| Same as above plus superheater percentage | 2045 | 2969 |
| Same as above but substitute firebox area for grate area | 12,560 | 18,237 |
| Power L1 | 3166 | 8050 |
| Power MT | 231.94 | 589.74 |