Great Northern 0-6-2 Locomotives in Ireland
Class Details by Steve Llanso of Sweat House Media
Class QGT (Locobase 10506)
Data from "Locomotives of Great Northern Ry, Ireland," The Locomotive Magazine, Vol XI (15 May 1905), p. 80. See also Steamindex's GNR(I) page -- [
], last accessed 12 June 2009. Works numbers were 3137-3138.
This pair of radial side tanks first went into service as shunters (switchers) in Belfast, but 99 later went to Dublin. At a relatively late date, the GNR superheated the pair in 1932 and 1935, probably in conjunction with replacing the replacing the original boiler. Steamindex describes the design as "extremely Doncaster looking".
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | QGT |
| Locobase ID | 10506 |
| Railroad | Great Northern |
| Country | Ireland |
| Whyte | 0-6-2T |
| Number in Class | 2 |
| Road Numbers | 98-99 |
| Gauge | 5'3" |
| Number Built | 2 |
| Builder | Robert Stephenson & Co |
| Year | 1904 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 16 / 4.88 |
| Engine Wheelbase (ft / m) | 22 / 6.71 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.73 |
| Overall Wheelbase (engine & tender) (ft / m) | 22 / 6.71 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 35,280 / 16,003 |
| Weight on Drivers (lbs / kg) | 103,040 / 46,738 |
| Engine Weight (lbs / kg) | 123,872 / 56,187 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 123,872 / 56,187 |
| Tender Water Capacity (gals / ML) | 1500 / 5.68 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 2.20 / 2 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 57 / 28.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 55 / 1397 |
| Boiler Pressure (psi / kPa) | 140 / 970 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 18.5" x 26" / 470x660 |
| Tractive Effort (lbs / kg) | 19,253 / 8733.02 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.35 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 240 - 1.75" / 44 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | 112.40 / 10.45 |
| Grate Area (sq ft / m2) | 19.93 / 1.85 |
| Evaporative Heating Surface (sq ft / m2) | 1266 / 117.66 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1266 / 117.66 |
| Evaporative Heating Surface/Cylinder Volume | 156.51 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2790 |
| Same as above plus superheater percentage | 2790 |
| Same as above but substitute firebox area for grate area | 15,736 |
| Power L1 | 2900 |
| Power MT | 186.14 |