Clogher Valley Railway 0-4-4 Locomotives in Ireland
Class Details by Steve Llanso of Sweat House Media
Class Blessingbourne (Locobase 5082)
Data from [
]. . (July 2002). See also "The Clogher Valley Railway", Locomotive Magazine, Volume 19 (15 December 1913), pp. 277. Works number was 914.
The Clogher Valley's most powerful engine, this tank arrived in 1907 with a four-wheel truck under the grate and footplate. It also rated a higher maximum tonnage rating of 90 tons on the ruling grade. Instead of the side plating shrouding the running gear found on the earlier sextet (Locobase 5080), the valve gear and drivers thrashed and heaved in full view of spectators, at least until the railway placed "side fenders" to mask the forward half.
It was scrapped without having been updated in 1935.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Blessingbourne |
| Locobase ID | 5082 |
| Railroad | Clogher Valley Railway |
| Country | Ireland |
| Whyte | 0-4-4T |
| Number in Class | 1 |
| Road Numbers | 7 |
| Gauge | 3' |
| Number Built | 1 |
| Builder | Hudswell, Clarke |
| Year | 1907 |
| Valve Gear | |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 5.25 / 1.60 |
| Engine Wheelbase (ft / m) | 14.50 / 4.42 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.36 |
| Overall Wheelbase (engine & tender) (ft / m) | 14.50 / 4.42 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 20,384 / 9246 |
| Weight on Drivers (lbs / kg) | 40,544 / 18,390 |
| Engine Weight (lbs / kg) | 66,612 / 30,215 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 840 / 3.18 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 1.40 / 1 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 34 / 17 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 40 / 1016 |
| Boiler Pressure (psi / kPa) | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 14" x 20" / 356x508 |
| Tractive Effort (lbs / kg) | 13,328 / 6045.49 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.04 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | 57 / 5.30 |
| Grate Area (sq ft / m2) | 12.25 / 1.14 |
| Evaporative Heating Surface (sq ft / m2) | 605 / 56.23 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 605 / 56.23 |
| Evaporative Heating Surface/Cylinder Volume | 169.78 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1960 |
| Same as above plus superheater percentage | 1960 |
| Same as above but substitute firebox area for grate area | 9120 |
| Power L1 | 2664 |
| Power MT | 289.72 |