Belfast & County Down 0-6-4 Locomotives in Ireland
Class Details by Steve Llanso of Sweat House Media
Class 29 (Locobase 8028)
Data from "New 0-6-4 Side-Tank Locomotive, Belfast and County Down Ry", Locomotive Magazine, Volume XXIX [29], No. 375 (15 November 1923), p 317. See also W T Scott's article in the Railway Preservation Society's 5-Foot 3 journal, January 1968, reproduced on the web at [
] (accessed 23 December 2006).
Scott saw the 29 on the Northern Counties Committee railway after that railway purchased her from the BCDR in 1949. He comments: "She was certainly a very strong engine of massive appearance accentuated by her very small wheels. I remember seeing her shunt on many occasions and she always impressed me with her competence in handling a big load." A profile that hid all the motion inside except for the coupling rods, tanks that partially hid the Belpaire firebox, full cab, and relatively large bunker behind contributed to the purposeful bulk.
After 1948, 29 was fitted with a larger blastpipe orifice (5" replacing 3 1/2"), which was said to have reduced her 90-lb-per-mile (25.36 kg/km) coal consumption rate. She ran a relatively low number of miles on the NCC, compiling only about 41,000 miles.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 29 |
| Locobase ID | 8028 |
| Railroad | Belfast & County Down |
| Country | Ireland |
| Whyte | 0-6-4T |
| Number in Class | 1 |
| Road Numbers | 29 |
| Gauge | 5'3" |
| Number Built | 1 |
| Builder | Beyer, Peacock |
| Year | 1923 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 12.50 |
| Engine Wheelbase (ft / m) | 22.67 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.55 |
| Overall Wheelbase (engine & tender) (ft / m) | 22.67 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 31,360 / 14,225 |
| Weight on Drivers (lbs / kg) | |
| Engine Weight (lbs / kg) | 124,320 / 56,391 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 1620 / 6.14 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 3.30 / 3 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 48 / 1219 |
| Boiler Pressure (psi / kPa) | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 17" x 24" / 432x610 |
| Tractive Effort (lbs / kg) | 19,652 / 8914.01 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 189 - 1.875" / 0 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 10.42 |
| Firebox Area (sq ft / m2) | 95 |
| Grate Area (sq ft / m2) | 18 / 1.67 |
| Evaporative Heating Surface (sq ft / m2) | 1064 / 98.88 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1064 / 98.88 |
| Evaporative Heating Surface/Cylinder Volume | 168.75 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2880 |
| Same as above plus superheater percentage | 2880 |
| Same as above but substitute firebox area for grate area | 15,200 |
| Power L1 | 3124 |
| Power MT | |