Barry 2-4-2 Locomotives in Great_Britain

Class Details by Steve Llanso of Sweat House Media

Class unknown (Locobase 10280)

Data from "Four-Coupled Passenger Engine, Barry Ry," The Locomotive Magazine, Vol VIII (28 Feb 1903), p. 150; and "Barry Railway", The Locomotive Magazine, Volume XXIX [29] (15 February 1923), p. 36-39.

The busy Barry Railway had three principal lines, one of which connected Cardiff to Bridgend. Passenger-traffic demands between Barry Island and Cardiff amounted to 5 round trips a day with a 150-ton train of 9-11 carriages over an 11-mile run. The trip took 1/2-hour and included 6 stops. "Considering the nature of the work performed by these engines," said the article, "an average coal consumption of 38-lbs per mile is by now means excessive."

{The three main lines, according to the article, were: "Brigend, via Aberthaw to Barry and Barry Dock, thence by Cadoxton and Cogan (Penarth Dock) to Cardiff; (2) Barry Island to Barry and Barry Dock, thence north through Cadoxton, Wenvoe, Treforest and Pontypridd to Porth, (3) Cardiff to Ely and St. Fagan's."}

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID10280
CountryGreat Britain
Number in Class4
Road Numbers
Number Built4
BuilderSharp, Stewart
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)16.42 / 5
Engine Wheelbase (ft / m)24.92 / 7.60
Ratio of driving wheelbase to overall engine wheelbase 0.66
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)87,360
Engine Weight (lbs / kg)136,640 / 61,979
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)136,640 / 61,979
Tender Water Capacity (gals / ML)1860 / 7.05
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 3.80 / 4
Minimum weight of rail (calculated) (lb/yd / kg/m)73 / 36.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)67.50 / 1715
Boiler Pressure (psi / kPa)150 / 10.30
High Pressure Cylinders (dia x stroke) (in / mm)18" x 26" / 457x660
Tractive Effort (lbs / kg)15,912 / 7217.57
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.49
Heating Ability
Tubes (number - dia) (in / mm)182 - 1.875" / 48
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)
Firebox Area (sq ft / m2)106 / 9.85
Grate Area (sq ft / m2)20.25 / 1.88
Evaporative Heating Surface (sq ft / m2)1068 / 99.26
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1068 / 99.26
Evaporative Heating Surface/Cylinder Volume139.47
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3038
Same as above plus superheater percentage3038
Same as above but substitute firebox area for grate area15,900
Power L13521
Power MT177.71

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Wes Barris