Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 13, p. 124. Works number 8193 in October 1886.
Several of the small wood-burning six-wheelers proved sufficient to serve short lines in the Southeast. Considering the the lght rail on lightly ballasted[, the specifications included the frequent request for '"extra heavy" springs.
[Locobase cannot locate the firebox heating surface area on three identical engines and consequently cannot estimate the evaporative heating surface area. In all three specs, the firebox dimension appeared with identical length, width, height at the throat tubesheet and at the backhead-- 56 7/16 x 33 3/8 x 41 1/4 and 35 3/4" He chose to add three entries to the database to allow for some future discovery. See Locobase 16548 was the 1886 Pensacola & Perdido #4, Locobase 16549 for the 1889 Aberdeen & West End pair (#1-2) and the first Aberdeen & Rockfish engine (#1) in 1892 at Locobase 16550.]
The P&P was taken into the Pensacola, Alabama & Tennessee in May 1893.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | unknown |
| Locobase ID | 16548 |
| Railroad | Pensacola & Perdido |
| Country | USA |
| Whyte | 2-4-0 |
| Number in Class | 1 |
| Road Numbers | 6 |
| Gauge | Std |
| Number Built | 1 |
| Builder | Burnham, Parry, Williams & Co |
| Year | 1886 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 7 / 2.13 |
| Engine Wheelbase (ft / m) | 14 / 4.27 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.50 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 33,000 / 14,969 |
| Engine Weight (lbs / kg) | 40,000 / 18,144 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 1200 / 4.55 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 28 / 14 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 44 / 1118 |
| Boiler Pressure (psi / kPa) | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 12" x 18" / 305x457 |
| Tractive Effort (lbs / kg) | 8012 / 3634.19 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.12 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 119 - 1.75" / 44 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 7.25 / 2.21 |
| Firebox Area (sq ft / m2) | |
| Grate Area (sq ft / m2) | 13.40 / 1.24 |
| Evaporative Heating Surface (sq ft / m2) | |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | |
| Evaporative Heating Surface/Cylinder Volume | |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2144 |
| Same as above plus superheater percentage | 2144 |
| Same as above but substitute firebox area for grate area | |
| Power L1 | |
| Power MT | |