Data from "'Compound' Freight for Metre-Gauge Railway As Exhibited on Stand No. 5025", North British Locomotive Company-Glasgow", Franco-British Exhibition, Machinery Hall, Building No 48 (White City, Shepherds Bush, London: 1908). See also "Franco-British Exhibition, 1908" entry on the Open University's Making Britain website at [], last accessed 28 May 2022.
Making Britain's website reports the 1908 Franco-British Exhibition's Official Catalogue's credit for the idea of this exhibition to Imre Kiralfy. Kiralfy suggested such an event to celebrate the Anglo-French Entente agreed to in 1904. The timing took advantage of the 1908 London Olympics site, which began on 27 April 1908, a month before the Franco-British Exhibition's 26 May 1908 opening. (The Olympics ended on 31 October, the same day as the FBE, which means the two major attractions interleaved their activities.)
Locobase has not found a compound 4-8-0 for the metre gauge before this cross-compound design. It was put on display at the FBE in 1908. It had a relatively large boiler and Belpaire firebox with large grate. Its cylinders used a relatively short stroke and received steam through piston valves actuated by outside radial constant-lead gear.
Sometime after the Exhibition, the NBLC Twelve-wheeler went to Argentina. Although the original railway isn't clear, it's known it was still in service on the Argentine State Railways
Principal Dimensions by Steve Llanso of Middle Run Media | |
---|---|
Class | unknown |
Locobase ID | 21024 |
Railroad | Argentine Government |
Country | Argentina |
Whyte | 4-8-0 |
Number in Class | 1 |
Road Numbers | |
Gauge | Metre |
Number Built | 1 |
Builder | North British |
Year | 1908 |
Valve Gear | Walschaert |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 12 / 3.66 |
Engine Wheelbase (ft / m) | 22.67 / 6.91 |
Ratio of driving wheelbase to overall engine wheelbase | 0.53 |
Overall Wheelbase (engine & tender) (ft / m) | |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 25,200 / 11,431 |
Weight on Drivers (lbs / kg) | 95,200 / 43,182 |
Engine Weight (lbs / kg) | 123,307 / 55,931 |
Tender Loaded Weight (lbs / kg) | 76,776 / 34,825 |
Total Engine and Tender Weight (lbs / kg) | 200,083 / 90,756 |
Tender Water Capacity (gals / ML) | 3600 / 14.02 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 5 / 4.50 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 40 / 20 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 42 / 1067 |
Boiler Pressure (psi / kPa) | 180 / 1240 |
High Pressure Cylinders (dia x stroke) (in / mm) | 19" x 22" / 483x559 (1) |
Low Pressure Cylinders (dia x stroke) (in / mm) | 26" x 22" / 660x559 (1) |
Tractive Effort (lbs / kg) | 18,860 / 8554.76 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.05 |
Heating Ability | |
Tubes (number - dia) (in / mm) | - 1.875" / 48 |
Flues (number - dia) (in / mm) | |
Flue/Tube length (ft / m) | 12 / 3.66 |
Firebox Area (sq ft / m2) | 111.75 / 10.38 |
Grate Area (sq ft / m2) | 27.75 / 2.58 |
Evaporative Heating Surface (sq ft / m2) | 1622 / 150.69 |
Superheating Surface (sq ft / m2) | |
Combined Heating Surface (sq ft / m2) | 1622 / 150.69 |
Evaporative Heating Surface/Cylinder Volume | 449.34 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 4995 |
Same as above plus superheater percentage | 4995 |
Same as above but substitute firebox area for grate area | 20,115 |
Power L1 | 4065 |
Power MT | 376.55 |