Glasgow, Dumfries & Carlisle 2-2-2 Locomotives in Great_Britain

Class Details by Steve Llanso of Sweat House Media

Class 2/77 (Locobase 20944)

Data from E L Ahrons, "The Locomotives of the Glagow & South Western Railway", Locomotive Magazine, Volume XXVIII [28] (15 May 1922), p. 141.Works numbers were 1-13 in 1853-1855

Ahrons reported that these locally produced singles appeared in Daniel Kinnear Clark's account of tests measuring the evaporative performance of boilers.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID20944
RailroadGlasgow, Dumfries & Carlisle
CountryGreat Britain
Number in Class13
Road Numbers77-85
Number Built13
BuilderKinmond, Hutton & Steel
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)
Engine Wheelbase (ft / m)12.33 / 3.76
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)42,560 / 19,305
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)72 / 1829
Boiler Pressure (psi / kPa)130 / 9
High Pressure Cylinders (dia x stroke) (in / mm)15" x 20" / 381x508
Tractive Effort (lbs / kg)6906 / 3132.51
Factor of Adhesion (Weight on Drivers/Tractive Effort)
Heating Ability
Tubes (number - dia) (in / mm)107 - 2.125" / 54
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)10.50 / 3.20
Firebox Area (sq ft / m2)64 / 5.95
Grate Area (sq ft / m2)
Evaporative Heating Surface (sq ft / m2)689 / 64.01
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)689 / 64.01
Evaporative Heating Surface/Cylinder Volume168.43
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 area8320
Power L13848
Power MT

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Wes Barris