Barry Railway 0-6-2 Locomotives in Great_Britain


Class Details by Steve Llanso of Sweat House Media

Class 122 (Locobase 6810)

Data from the table presented on pages 409, 411 of the Groupe VI. - GTnie civil. - Moyens de transport. DeuxiFme partie. Classes 32 (Tome I), part of the series of Rapports du Jury Internationale of the Exposition Unverselle Internationale de 1900 Paris Exposition, hosted on the website of Le Conservatoire numTrique des Arts & MTtiers ([], Accessed 21 August 2005). See also "Barry Railway", The Locomotive Magazine, Volume XXIX [29] (15 February 1923), p. 36-39.

The Barry Dock & Railway was authorized by Act of Parliament in 1884, a year after a similar proposal was successfully blocked by rival Welsh mine-to-dock Taff Valley and Rhymney Railways. Its main line ran the new dock at Barry 19 miles inland (and upward, for the most part) to Trehafod. According to D.J.Morgan, writing on ttp://www.trackbed.com/companies/b/company_bry.htm (accessed 2 September 2005), "The port immediately succeeded. In 1890-2 nearly one third as much coal passed through it as through Cardiff. By 1914 it was handling more than Cardiff and Penarth put together. Barry grew from a tiny village into a substantial town."

Even so, high dividends came at the cost of relatively meager maintenance to the point that by 1906 a full third of the locomotive stud was out of service at any given time. In 1922, the Great Western absorbed the Barry as part of the national Grouping plan.

These Belgian locomotives were among the first to operate on the Barry.


Class B1 (Locobase 10490)

Data from "The Barry Ry Locomotives and Works," The Locomotive Magazine, Volume XI [11] (15 February 1905), p. 27; and "Barry Railway", The Locomotive Magazine, Volume XXIX [29] (15 February 1923), p. 36-39. Vulcan works numbers were 1336-1345.

This class of shunters designed by J S Hosgood was described as indispensable to the Barry in view of all the dockside rail car movement the system needed. The last four in the class were saddle-tankers.


Class K (Locobase 10137)

Data from "American Locomotives for the Barry Railway," The Locomotive Magazine, Volume V ]5] (February 1900), p.18. See also Wikipedia's entry "Barry Railway Class K" at [], last accessed 9 February 2020. Works numbers ran 2482-2486.

These radial tanks resemble those supplied by Franco-Belge (Locobase 6810) to the Barry a year earlier in many striking ways. Both classes in turn reflected the common requirements of such an arrangement that many British railways sought to satisfy. So the dimensions, weights, and power for the 0-6-2T settle in a relatively narrow band.

The Cookes also blended into the background in terms of their appearance as well. They had the uncluttered boiler, claustrophobic cab, rounded and unadorned dome. Only the cylinders themselves, the crosshead, and possibly the particular pattern of the wheel spokes betrayed their North American origins.

According to Wikipedia, another mark of their North American-ness was that "When tests were originally carried out, it was found necessary to stop two or three times while taking empty wagons up to the Rhondda. According to one driver, it was not advisable to pass a single water column for fear of running short before the next one." So the Barry put two on banking (helper) duties "on the gradients between Trehafod Junction and Pontypridd and between Treforest Junction and Tonteg." The other three hauled coal traffic between Cadoxton Yard and the Barry Docks, but while one was kept at the Barry Docks, the other two joined the first two Cookes as banking engines.

Principal Dimensions by Steve Llanso of Sweat House Media

Class122B1K
Locobase ID6810 10490 10137
RailroadBarry RailwayBarry RailwayBarry Railway
CountryGreat BritainGreat BritainGreat Britain
Whyte0-6-2T0-6-2T0-6-2T
Number in Class5105
Road Numbers122-126/273-27754-63117-121/193-197
GaugeStdStdStd
Number Built5105
BuilderSA Franco-BelgeVulcan FoundryCooke
Year189818921899
Valve GearAllanAllanStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)14.35 / 4.3714.44 / 4.4014.42 / 2
Engine Wheelbase (ft / m)20.67 / 6.3020.67 / 6.3019.35 / 5.90
Ratio of driving wheelbase to overall engine wheelbase 0.69 0.70 0.75
Overall Wheelbase (engine & tender) (ft / m)20.67 / 6.3020.67 / 6.3019.35 / 5.90
Axle Loading (Maximum Weight per Axle) (lbs / kg)36,513 / 16,562
Weight on Drivers (lbs / kg)106,571 / 48,340103,712 / 47,043100,016 / 45,367
Engine Weight (lbs / kg)124,700 / 56,563127,681 / 57,915126,000 / 57,153
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)124,700 / 56,563127,681 / 57,915126,000 / 57,153
Tender Water Capacity (gals / ML)1534 / 5.812099 / 7.951920 / 7.27
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 2.20 / 2 1.80 / 2 1.90 / 2
Minimum weight of rail (calculated) (lb/yd / kg/m)59 / 29.5058 / 2956 / 28
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)50 / 127051 / 129551 / 1295
Boiler Pressure (psi / kPa)150 / 10.30150 / 10.30160 / 11
High Pressure Cylinders (dia x stroke) (in / mm)18" x 26" / 457x66018" x 26" / 457x66018" x 24" / 457x610
Tractive Effort (lbs / kg)21,481 / 9743.6321,060 / 9552.6720,736 / 9405.70
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.96 4.92 4.82
Heating Ability
Tubes (number - dia) (in / mm)182 - 2" / 51181 - 2" / 52181 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)10.76 / 3.2810.76 / 3.2811.21 / 3.42
Firebox Area (sq ft / m2)109 / 10.13109.97 / 10.2298 / 9.11
Grate Area (sq ft / m2)20.44 / 1.9020.77 / 1.9321 / 1.95
Evaporative Heating Surface (sq ft / m2)1120 / 104.091133 / 105.261147 / 106.60
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1120 / 104.091133 / 105.261147 / 106.60
Evaporative Heating Surface/Cylinder Volume146.26147.96162.27
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation306631163360
Same as above plus superheater percentage306631163360
Same as above but substitute firebox area for grate area16,35016,49615,680
Power L1271828023150
Power MT168.68178.69208.30

All material Copyright © SteamLocomotive.com
Wes Barris