Garnkirk & Glasgow 2-2-0 Locomotives in Great_Britain
Class Details by Steve Llanso of Sweat House Media
Class St Rollox (Locobase 5650)
Data from [
] (21 July 2003). Jim Howie. This was one of two Planets delivered to this Scottish Railway in 1831 and was Stephenson's 36th locomotive. Price delivered was 780 pounds. Compared to other Planet designs, this was a smaller engine. The very similar Jenny, built by Johnston & McNab in 1836, had 85 tubes with a total heating surface of 294 sq ft.
It served the G & G for five years, was sold to the Paisley & Renfrew for 350 pounds. Howie notes that when the P&R's rolling stock was auctioned off, St Rollox had a scrap value of only 13 pounds.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | St Rollox |
| Locobase ID | 5650 |
| Railroad | Garnkirk & Glasgow |
| Country | Great Britain |
| Whyte | 2-2-0 |
| Number in Class | 1 |
| Road Numbers | |
| Gauge | Std |
| Number Built | 1 |
| Builder | Robert Stephenson & Co |
| Year | 1831 |
| Valve Gear | |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | |
| 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) | |
| Weight on Drivers (lbs / kg) | |
| Engine Weight (lbs / kg) | |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 54 / 1372 |
| Boiler Pressure (psi / kPa) | 50 / 340 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 10" x 14" / 254x356 |
| Tractive Effort (lbs / kg) | 1102 / 499.86 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 86 - 1" / 25 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 6 / 1.83 |
| Firebox Area (sq ft / m2) | |
| Grate Area (sq ft / m2) | |
| Evaporative Heating Surface (sq ft / m2) | 299 / 27.79 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 299 / 27.79 |
| Evaporative Heating Surface/Cylinder Volume | 234.95 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | |
| Same as above plus superheater percentage | |
| Same as above but substitute firebox area for grate area | |
| Power L1 | |
| Power MT | |