Data from "Narrow-Gauge Locomotives of the Belfast and Northern Counties RY," The Locomotive Magazine, Vol VII (May 1902), p. 92. Boiler pressure is an estimate. Works numbers were 1687 and 1828.
The Ballymena & Larne ran 32 miles in County Antrim, serving the iron ore deposits as well as carrying passengers. These locomotives opened the line, or at least the Larne to Ballyclare section. It was only 12 years before declining revenues forced the line to be taken over by the Belfast & Northern Counties system.
BP's two engines were delivered 3 years apart and differed only in details. They were similar to the Isle of Man locomotives delivered in the same period.
Principal Dimensions by Steve Llanso of Middle Run Media | |
---|---|
Class | P |
Locobase ID | 10224 |
Railroad | Ballymena & Larne |
Country | Ireland |
Whyte | 2-4-0T |
Number in Class | 1 |
Road Numbers | 1, 4 / 104-105 |
Gauge | 3' |
Number Built | 1 |
Builder | Beyer, Peacock |
Year | 1877 |
Valve Gear | Walschaert |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 8 / 2.44 |
Engine Wheelbase (ft / m) | 14.25 / 4.34 |
Ratio of driving wheelbase to overall engine wheelbase | 0.56 |
Overall Wheelbase (engine & tender) (ft / m) | 14.25 / 4.34 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
Weight on Drivers (lbs / kg) | 35,840 / 16,257 |
Engine Weight (lbs / kg) | 47,040 / 21,337 |
Tender Loaded Weight (lbs / kg) | |
Total Engine and Tender Weight (lbs / kg) | 47,040 / 21,337 |
Tender Water Capacity (gals / ML) | |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 30 / 15 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 45 / 1143 |
Boiler Pressure (psi / kPa) | 140 / 970 |
High Pressure Cylinders (dia x stroke) (in / mm) | 11" x 18" / 279x457 |
Tractive Effort (lbs / kg) | 5760 / 2612.70 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 6.22 |
Heating Ability | |
Tubes (number - dia) (in / mm) | 88 - 1.625" / 41 |
Flues (number - dia) (in / mm) | |
Flue/Tube length (ft / m) | |
Firebox Area (sq ft / m2) | 45.37 / 4.22 |
Grate Area (sq ft / m2) | 6.85 / 0.64 |
Evaporative Heating Surface (sq ft / m2) | 343 / 31.88 |
Superheating Surface (sq ft / m2) | |
Combined Heating Surface (sq ft / m2) | 343 / 31.88 |
Evaporative Heating Surface/Cylinder Volume | 173.24 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 959 |
Same as above plus superheater percentage | 959 |
Same as above but substitute firebox area for grate area | 6352 |
Power L1 | 3022 |
Power MT | 371.78 |