Lynton & Barnstaple 2-4-2 Locomotives in Great_Britain


Class Details by Steve Llanso of Sweat House Media

Class Lyn (Locobase 7623)

Data from []; and DeGolyer, Volume 21, p. 202. See also Southern Railway E-Mail Group's at -- [], first accessed 3 July 2006 (later [], last accessed 11 July 2021.) Works number was 15965 in 1899.

As the L&B prepared to open its line in North Devon in 1898, it realized that the three Manning Wardle 2-6-2Ts then under construction (Locobase 7624) wouldn't be sufficient to handle expected traffic. British builders were struggling with the effects of a lockout of workers who were demanding an eight-hour workday; that contest was settled temporarily in January 1898.

As did other British railways, the L &B turned to a US supplier - in this case Baldwin -- for a little double-ender tank. Its power dimensions and boiler were essentially identical to the three MWs, but it weighed 5 1/4 long tons less. It had a fully enclosed cab and sand domes on either side of the steam dome.

The SEMG notes the Lyn as part of the Southern Railway's acquisition in 1923. Perhaps not surprisingly, "This locomotive, with its American style and manners, was named Lyn but was never fully accepted by the drivers and fitters who looked on it with some suspicion and treated it warily, despite better handling on the tight radii curves due to the shorter wheelbase!"

Unlike most other US locomotives in Britain, the Lyn enjoyed a relatively long career and made its last run in September 1935 when the entire line was sold for dismantling. Lyn was scrapped the following December.

Principal Dimensions by Steve Llanso of Sweat House Media

ClassLyn
Locobase ID7623
RailroadLynton & Barnstaple
CountryGreat Britain
Whyte2-4-2T
Number in Class1
Road Numbers762
Gauge60 cm
Number Built1
BuilderBurnham, Williams & Co
Year1898
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)5 / 1.52
Engine Wheelbase (ft / m)17.58 / 5.36
Ratio of driving wheelbase to overall engine wheelbase 0.28
Overall Wheelbase (engine & tender) (ft / m)17.58 / 5.36
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)26,000 / 11,793
Engine Weight (lbs / kg)44,000 / 19,958
Tender Loaded Weight (lbs / kg)800 / 363
Total Engine and Tender Weight (lbs / kg)44,800 / 20,321
Tender Water Capacity (gals / ML)961 / 3.64
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)22 / 11
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)33 / 838
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)10" x 16" / 254x406
Tractive Effort (lbs / kg)7418 / 3364.75
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.50
Heating Ability
Tubes (number - dia) (in / mm)84 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 8.92 / 2.72
Firebox Area (sq ft / m2)40 / 3.72
Grate Area (sq ft / m2) 7.75 / 0.72
Evaporative Heating Surface (sq ft / m2)379 / 35.21
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)379 / 35.21
Evaporative Heating Surface/Cylinder Volume260.58
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1395
Same as above plus superheater percentage1395
Same as above but substitute firebox area for grate area7200
Power L13941
Power MT668.34

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