Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume48, p. 293 and Volume 53, p. 13. Works numbers were 40621 in September 1913 and 45290 in March 1917.
These were two of the typical Baldwin light logging Prairies built in the 19teens; they were deliveered as wood-burners. Shortline H&B ran over 24 miles (38.6 km) of "30, 35, and 40 lb/yard (15, 17.5, 20 kg/metre) rail" (according to the specifications) in the Geechie section of South Carolina's coastal plain, which held swamps and pinewoods. The latter were harvested for lumber and pitch to convert to turpentine. The road curved in an arc that ranged northeast across the Atlantic Coast Line bending southeast on its way to Smoaks. Tracks extended another 25 miles (40.25 km) south to Cottageville, which lay directly east of Hampton.
The H&B was owned by the Lightsey Brothers, whose headquarters could be found at 1 Lightsey Street, Hampton, SC.
The pair apparently served the H&B for their entire careers.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 33 |
| Locobase ID | 14159 |
| Railroad | Hampton & Branchville |
| Country | USA |
| Whyte | 2-6-2 |
| Number in Class | 2 |
| Road Numbers | 33, 55 |
| Gauge | Std |
| Number Built | 2 |
| Builder | Baldwin |
| Year | 1913 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 7.83 / 2.39 |
| Engine Wheelbase (ft / m) | 20.58 / 6.27 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.38 |
| Overall Wheelbase (engine & tender) (ft / m) | 39.67 / 12.09 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 40,000 / 18,144 |
| Engine Weight (lbs / kg) | 55,000 / 24,948 |
| Tender Loaded Weight (lbs / kg) | 40,000 / 18,144 |
| Total Engine and Tender Weight (lbs / kg) | 95,000 / 43,092 |
| Tender Water Capacity (gals / ML) | 2000 / 7.58 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 22 / 11 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 36 / 914 |
| Boiler Pressure (psi / kPa) | 170 / 1170 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 12" x 16" / 305x406 |
| Tractive Effort (lbs / kg) | 9248 / 4194.83 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.33 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 83 - 1.75" / 44 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 10.08 / 3.07 |
| Firebox Area (sq ft / m2) | 56 / 5.20 |
| Grate Area (sq ft / m2) | 14 / 1.30 |
| Evaporative Heating Surface (sq ft / m2) | 436 / 40.51 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 436 / 40.51 |
| Evaporative Heating Surface/Cylinder Volume | 208.61 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2380 |
| Same as above plus superheater percentage | 2380 |
| Same as above but substitute firebox area for grate area | 9520 |
| Power L1 | 3494 |
| Power MT | 577.72 |