Data from [], last accessed 20 April 2018.
This tiny well tanker served the RAF until 1945 at Calshot Spit, Southampton. Talyllyn Railway in western Wales received it as a gift in 1953. According to [] website, an overhaul changed the gauge to the Talyllyn's 2'3". The locomotive entered service in 1954 dubbed "Douglas".
After a while, Douglas went into reserve, only to be resurrected in 1995, fitted with a new boiler, and a livery representing the Air Ministry Works & Buildings. Talyllyn's website reported that "On 21st February 2018, it was the 100th Birthday of 'Douglasñ. To commemorate the centenary a new livery reflecting its RAF heritage was commissioned."
Principal Dimensions by Steve Llanso of Middle Run Media | |
---|---|
Class | unknown |
Locobase ID | 4919 |
Railroad | Airservice Construction Corps |
Country | Great Britain |
Whyte | 0-4-0WT |
Number in Class | 1 |
Road Numbers | |
Gauge | 2' |
Number Built | 1 |
Builder | Andrew Barclay |
Year | 1918 |
Valve Gear | |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 3.94 / 1.20 |
Engine Wheelbase (ft / m) | 3.94 / 1.20 |
Ratio of driving wheelbase to overall engine wheelbase | 1 |
Overall Wheelbase (engine & tender) (ft / m) | |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
Weight on Drivers (lbs / kg) | 17,920 / 8128 |
Engine Weight (lbs / kg) | 17,920 / 8128 |
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) | 15 / 7.50 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 24 / 610 |
Boiler Pressure (psi / kPa) | 160 / 1100 |
High Pressure Cylinders (dia x stroke) (in / mm) | 6.88" x 10.75" / 175x273 |
Tractive Effort (lbs / kg) | 2883 / 1307.71 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 6.22 |
Heating Ability | |
Tubes (number - dia) (in / mm) | |
Flues (number - dia) (in / mm) | |
Flue/Tube length (ft / m) | |
Firebox Area (sq ft / m2) | |
Grate Area (sq ft / m2) | |
Evaporative Heating Surface (sq ft / m2) | 130 / 12.08 |
Superheating Surface (sq ft / m2) | |
Combined Heating Surface (sq ft / m2) | 130 / 12.08 |
Evaporative Heating Surface/Cylinder Volume | 281.05 |
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 |