2-4-2 Steam Locomotives in Great Britain

Barry


Class Details by Steve Llanso of Sweat House Media

Class J (Locobase 10280)

Data from "Four-Coupled Passenger Engine, Barry Ry," The Locomotive Magazine, Volume VIII [8] (28 Feb 1903), p. 150; and "Barry Railway", The Locomotive Magazine, Volume XXIX [29] (15 February 1923), p. 36-39. Sharp, Stewart produced works numbers 4367-4369 in May 1898 (Hudswell Clark delivered the other three) and 4497-4501 in June 1899.

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 Middle Run Media
ClassJ
Locobase ID10280
RailroadBarry (GWR)
CountryGreat Britain
Whyte2-4-2T
Number in Class8
Road Numbers89-91, 94-98/1314-1321
GaugeStd
Number Built8
BuilderSharp, Stewart
Year1897
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)
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 / 1030
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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