Built in 1889, the W&P connected the two North Carolina towns with 33 miles (53 km) of track until 1904, when it was converted to standard gauge and merged into the Norfolk & Southern.
This tiny wood-burning 4-4-2 is a delightful miniature that stretched the definition of "Atlantic" beyond any other incarnation. It was bought to serve the passenger service that began in 1902 and may have used the trailing axle to carry the large grate necessitated by the fuel described as "poor wood". But its driver diameter/gauge ratio put it squarely in the mixed traffic category and the tire specs spelled out its dual role.
Clearly, the railroad and the builder were working within tight margins where performance and weight limits opposed each other. A spec note resolved the conflict: Company will accept the additional weight of changes in wheels and tubes." Locobase can't tell what these changes might have been, but suspects that the original proposal was undersized for the traffic requirement.
George Hilton reported that the 10 was the only Atlantic to operate on any American narrow-gauge line.
When the W&P converted to standard gauge, 10 was sold to the Norfolk County Lumber Company. From there, the engine went to the Wellington & Powellsville (aka the Walk & Push) and renumbered 9. It operated until 1926, when the W&P converted to standard gauge.
|Principal Dimensions by Steve Llanso of Sweat House Media|
|Railroad||Washington & Plymouth|
|Number in Class||1|
|Builder||Burnham, Williams & Co|
|Locomotive Length and Weight|
|Driver Wheelbase (ft / m)||4 / 1.22|
|Engine Wheelbase (ft / m)||16.83 / 5.13|
|Ratio of driving wheelbase to overall engine wheebase||0.24|
|Overall Wheelbase (engine & tender) (ft / m)||38.12 / 11.62|
|Axle Loading (Maximum Weight per Axle) (lbs / kg)|
|Weight on Drivers (lbs / kg)||23,740 / 10,768|
|Engine Weight (lbs / kg)||45,060 / 20,439|
|Tender Loaded Weight (lbs / kg)||29,940 / 13,581|
|Total Engine and Tender Weight (lbs / kg)||75,000 / 34,020|
|Tender Water Capacity (gals / ML)||1500 / 5.68|
|Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)|
|Minimum weight of rail (calculated) (lb/yd / kg/m)||20 / 10|
|Geometry Relating to Tractive Effort|
|Driver Diameter (in / mm)||42 / 1067|
|Boiler Pressure (psi / kPa)||150 / 10.30|
|High Pressure Cylinders (dia x stroke) (in / mm)||10" x 18" / 254x457|
|Tractive Effort (lbs / kg)||5464 / 2478.43|
|Factor of Adhesion (Weight on Drivers/Tractive Effort)||4.34|
|Firebox Area (sq ft / m2)||52 / 4.83|
|Grate Area (sq ft / m2)||12.40 / 1.15|
|Evaporative Heating Surface (sq ft / m2)||485 / 45.07|
|Superheating Surface (sq ft / m2)|
|Combined Heating Surface (sq ft / m2)||485 / 45.07|
|Evaporative Heating Surface/Cylinder Volume||296.41|
|Computations Relating to Power Output (More Information)|
|Robert LeMassena's Power Computation||1860|
|Same as above plus superheater percentage||1860|
|Same as above but substitute firebox area for grate area||7800|