Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 35, p. 331. (Thanks to Chris Hohl for his 4 April 2015 email correcting the locomotive's boiler pressure and engine weight.) See Locobase 13263 for a history of the StL WW.Works number was 35159 in August 1910.
Locobase cannot figure out why Baldwin supplied a locomotive with such an outlandish ratio of heating surface area to grate area. The specs confirm the numbers and the ratio.
This Prairie freighter served the Water Works for 17 years before being sold east to locomotive rebuilder/reseller Birmingham Rail & Locomotive in May 1927. BR&L turned the engine around quickly, sending to the Tennessee & North Carolina a month later as their 105. Based in Newport, Tenn, the road remained open until 1951.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 2 |
| Locobase ID | 13692 |
| Railroad | St Louis Water Works |
| Country | USA |
| Whyte | 2-6-2 |
| Number in Class | 1 |
| Road Numbers | 2 |
| Gauge | Std |
| Number Built | 1 |
| Builder | Baldwin |
| Year | 1910 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 10.50 / 3.20 |
| Engine Wheelbase (ft / m) | 26.58 / 8.10 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.40 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 98,000 / 44,452 |
| Engine Weight (lbs / kg) | 134,000 / 60,781 |
| Tender Loaded Weight (lbs / kg) | 70,000 / 31,752 |
| Total Engine and Tender Weight (lbs / kg) | 204,000 / 92,533 |
| Tender Water Capacity (gals / ML) | 3500 / 13.26 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 6 / 6 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 54 / 27 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 44 / 1118 |
| Boiler Pressure (psi / kPa) | 180 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 17" x 24" / 432x610 |
| Tractive Effort (lbs / kg) | 24,118 / 10939.75 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.06 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 310 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 14.08 / 4.29 |
| Firebox Area (sq ft / m2) | 128.60 / 11.95 |
| Grate Area (sq ft / m2) | 15.80 / 1.47 |
| Evaporative Heating Surface (sq ft / m2) | 2401 / 223.06 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 2401 / 223.06 |
| Evaporative Heating Surface/Cylinder Volume | 380.51 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2844 |
| Same as above plus superheater percentage | 2844 |
| Same as above but substitute firebox area for grate area | 23,148 |
| Power L1 | 6368 |
| Power MT | 429.77 |