Manchester, Sheffield and Lincolnshire 2-4-2 Locomotives in Great_Britain
Class Details by Steve Llanso of Sweat House Media
Class Class 9G / F2 (Locobase 5890)
Data and information from Richard Marsden's LNER site -- [
] (January 2004); and Diagram on GCR Rolling Trust website -- [] -- supplied wheelbases and weights. Works numbers were 3694-3703 in 1898.
Pollitt's updating of the Parker Class 3s involved substituting Stephenson for Joy valve gear, use of a Belpaire firebox, and a longer stroke. The boiler and grate remained the same, but the axle loading grew by 2 full long tons (2.5 short tons). Marsden doesn't say why the Class 9Gs were limited to ten locomotives, but it's possible that the locomotive was seen to have reached its limits.
The ten ran into the 1930s, along the way being fitted with a #2 Standard boiler in 1909 to 1916. As more powerful locomotives began succeeding the F2, 4 of the class were converted to push-pull operation and survived in East Anglia. In fact, the first of the class didn't retire in 1947 with the last leaving in 1950.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Class 9G / F2 |
| Locobase ID | 5890 |
| Railroad | Manchester, Sheffield and Lincolnshire (GCR) |
| Country | Great Britain |
| Whyte | 2-4-2T |
| Number in Class | 12 |
| Road Numbers | |
| Gauge | Std |
| Number Built | 12 |
| Builder | Beyer, Peacock |
| Year | 1898 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 8.58 / 2.62 |
| Engine Wheelbase (ft / m) | 23.46 / 7.15 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.37 |
| Overall Wheelbase (engine & tender) (ft / m) | 23.46 / 7.15 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 41,440 / 18,797 |
| Weight on Drivers (lbs / kg) | 79,520 / 36,070 |
| Engine Weight (lbs / kg) | 139,552 / 63,300 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 139,552 / 63,300 |
| Tender Water Capacity (gals / ML) | 1632 / 6.18 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 66 / 33 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 67 / 1702 |
| Boiler Pressure (psi / kPa) | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 18" x 26" / 457x660 |
| Tractive Effort (lbs / kg) | 17,099 / 7755.99 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.65 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 190 - 1.75" / 44 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | 99 / 9.20 |
| Grate Area (sq ft / m2) | 18.30 / 1.70 |
| Evaporative Heating Surface (sq ft / m2) | 1063 / 98.79 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1063 / 98.79 |
| Evaporative Heating Surface/Cylinder Volume | 138.82 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2928 |
| Same as above plus superheater percentage | 2928 |
| Same as above but substitute firebox area for grate area | 15,840 |
| Power L1 | 3635 |
| Power MT | 201.55 |