Dunn & Shute, contractors 0-4-0 Locomotives in Great_Britain


Class Details by Steve Llanso of Sweat House Media

Class Trojan (Locobase 7488)

Data from F W Harman "Trojan", The Industrial Railway Record #48 (June, 1973) pp 52-55 as reproduced on the IR Society's website [] (accessed 9 May 2006).

Harman notes that Trojan and a sister were built on speculation by Avonside in 1897-1898 to their order number 940 as works #1386-1387. Both sold quickly. The latter engine was named WHITEHALL by its new owner J & G Joicey & Co, who operated it in County Durham at the Handen Hold Colliery (Puns on that name must abound.). WHITEHALL was scrapped in the 1930s.

TROJAN served the Town Dock at Newport under several successor owners including Alexandra Docks (1903) and the Great Western (1922) as GWR's 1340 until its retirement in July 1932. Bought in 1934 by Victoria Colliery, by which time it had a new boiler with a smaller dome, TROJAN served several collieries until JB True bought it in March 1968 to preserve it. According to the Didcot Society's 2005 listing ([], accessed 12 March 2006), TROJAN didn't actually operate until 2002.

Principal Dimensions by Steve Llanso of Sweat House Media

ClassTrojan
Locobase ID7488
RailroadDunn & Shute, contractors
CountryGreat Britain
Whyte0-4-0ST
Number in Class2
Road Numbers
GaugeStd
Number Built2
BuilderAvonside
Year1897
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 5.50 / 1.68
Engine Wheelbase (ft / m) 5.50 / 1.68
Ratio of driving wheelbase to overall engine wheelbase1
Overall Wheelbase (engine & tender) (ft / m) 5.50 / 1.68
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)51,184 / 23,217
Engine Weight (lbs / kg)51,184 / 23,217
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)51,184 / 23,217
Tender Water Capacity (gals / ML)756 / 2.86
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 0.60 / 1
Minimum weight of rail (calculated) (lb/yd / kg/m)43 / 21.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)39 / 991
Boiler Pressure (psi / kPa)140 / 9.70
High Pressure Cylinders (dia x stroke) (in / mm)14" x 20" / 356x508
Tractive Effort (lbs / kg)11,961 / 5425.42
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.28
Heating Ability
Tubes (number - dia) (in / mm)113 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)8 / 2.44
Firebox Area (sq ft / m2)52 / 4.83
Grate Area (sq ft / m2) 8.25 / 0.77
Evaporative Heating Surface (sq ft / m2)466 / 43.29
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)466 / 43.29
Evaporative Heating Surface/Cylinder Volume130.77
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1155
Same as above plus superheater percentage1155
Same as above but substitute firebox area for grate area7280
Power L11854
Power MT159.71

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