Data from DeGolyer, Volume 22, p. 29; and "Locomotive Building", Railroad Gazette, Volume XXX [30], No 47 (December 1898), p. 850 . See also WAB 1907 Locomotive Diagrams book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. Works numbers were 16426-16430 in December 1898.
This small, relatively lightweight class adopted the Wabash's numbers when that railroad absorbed the O&StL in 1901 It's not clear to Locobase whether this class was delivered with the 240 tubes,, each measuring 13 ft 8 3/4 in (4.18 m) shown in the order spec. If so, tube surface area measured 1,654.5 sq ft (153.71 sq m)) that, with the addition of firebox heating surface area, added up to 1,807 sq ft (167.88 sq m)) of evaporative heating surface area. By 1907, however, the class presented the 247 tubes shown in this entry. 260 was scrapped first in 1920, 261 followed in June 1921, 257 in December 1926, 258 in 1928, and 259 in December 1931, more than 11 years after the first of the class.
Principal Dimensions by Steve Llanso of Sweat House Media | |
|---|---|
| Class | H5 |
| Locobase ID | 9898 |
| Railroad | Omaha & St Louis/Wabash |
| Country | USA |
| Whyte | 4-6-0 |
| Number in Class | 5 |
| Road Numbers | 600-604/257-261 |
| Gauge | Std |
| Number Built | 5 |
| Builder | Burnham, Williams & Co |
| Year | 1898 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 11.75 / 4.80 |
| Engine Wheelbase (ft / m) | 22.08 / 7.95 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.53 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 92,000 / 41,731 |
| Engine Weight (lbs / kg) | 126,000 / 57,153 |
| Tender Loaded Weight (lbs / kg) | 70,000 / 31,752 |
| Total Engine and Tender Weight (lbs / kg) | 196,000 / 88,905 |
| Tender Water Capacity (gals / ML) | 4000 / 18.94 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 10 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 51 / 25.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 56 / 1422 |
| Boiler Pressure (psi / kPa) | 185 / 12.80 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 18" x 26" / 457x660 |
| Tractive Effort (lbs / kg) | 23,655 / 10729.74 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.89 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 247 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 13.25 / 4.04 |
| Firebox Area (sq ft / m2) | 152.50 / 13.94 |
| Grate Area (sq ft / m2) | 23.33 / 2.17 |
| Evaporative Heating Surface (sq ft / m2) | 1863 / 173.14 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1863 / 173.14 |
| Evaporative Heating Surface/Cylinder Volume | 243.21 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 4316 |
| Same as above plus superheater percentage | 4316 |
| Same as above but substitute firebox area for grate area | 28,213 |
| Power L1 | 5918 |
| Power MT | 425.44 |