Data from "Irish Engines", Railway and Locomotive Engineering, Volume 15, No 9 (September 1902), p. 382; and Railway Engineer, February 1905, p. 39.
Designed by E Cusack to pull 310 tons at 60 mph on the flat, 280 tons up 1% at 30 mph. It served the heavy mail and passenger trains between Dublin and Broadstone. Belpaire boiler with inside everything except the connecting rods and painted a very attractive dark blue.
At the time of service entry, the Celtic was the heaviest locomotive to have been built in Ireland. As steamindex's summary notes, the size was accompanied by names that "added grandeur: Titanic, Celtic, Britannic, Atlantic, Majestic and Mercuric".
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | A |
| Locobase ID | 2686 |
| Railroad | Midland Great Western |
| Country | Ireland |
| Whyte | 4-4-0 |
| Number in Class | 6 |
| Road Numbers | 127, 129, 125-126, 128, 124 |
| Gauge | 5'3" |
| Number Built | 6 |
| Builder | MGW |
| Year | 1902 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 9.25 / 2.82 |
| Engine Wheelbase (ft / m) | |
| Ratio of driving wheelbase to overall engine wheelbase | |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 40,096 / 18,187 |
| Weight on Drivers (lbs / kg) | 76,496 / 34,698 |
| Engine Weight (lbs / kg) | 114,016 / 51,717 |
| Tender Loaded Weight (lbs / kg) | 80,192 / 36,375 |
| Total Engine and Tender Weight (lbs / kg) | 194,208 / 88,092 |
| Tender Water Capacity (gals / ML) | 3600 / 13.64 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 5.50 / 5 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 64 / 32 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 75 / 1905 |
| Boiler Pressure (psi / kPa) | 180 / 1230 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 18" x 26" / 457x660 |
| Tractive Effort (lbs / kg) | 17,185 / 7794.99 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.45 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 235 - 1.75" / 44 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 11.25 / 3.43 |
| Firebox Area (sq ft / m2) | 150 / 13.94 |
| Grate Area (sq ft / m2) | 20 / 1.86 |
| Evaporative Heating Surface (sq ft / m2) | 1363 / 126.63 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1363 / 126.63 |
| Evaporative Heating Surface/Cylinder Volume | 177.99 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3600 |
| Same as above plus superheater percentage | 3600 |
| Same as above but substitute firebox area for grate area | 27,000 |
| Power L1 | 6209 |
| Power MT | 357.89 |