R Briggs & Son, Ltd 0-4-0 Locomotives in Great_Britain

Class Details by Steve Llanso of Sweat House Media

Class Lazarus (Locobase 5086)

From cdrrs.future.easyspace.com/503a.html, a reprint of a 1996 article in the Phoenix by EA Wade discusses these vertical watertube boiler curiosities which appeared in very small numbers in the late 1920s.

Four classes altogether of a total of approximately 25 locomotives appeared in that time, all looking like stubby tram cars with a entrance midway along the side and wheels the same diameter as the railcars they pulled.

The Lazarus is thought to be a B type. Three other Bs (works 117-119)were sold to Harold Arnold & Son in 1930 as 1-3.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID5086
RailroadR Briggs & Son, Ltd
CountryGreat Britain
Number in Class1
Road Numbers104
Number Built4
Valve Gear
Locomotive Length and Weight
Driver Wheelbase (ft / m) 5.50 / 1.68
Engine Wheelbase (ft / m)
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)78,400 / 35,562
Engine Weight (lbs / kg)78,400 / 35,562
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)1200 / 4.55
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 0.30
Minimum weight of rail (calculated) (lb/yd / kg/m)65 / 32.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)36 / 914
Boiler Pressure (psi / kPa)280 / 19.30
High Pressure Cylinders (dia x stroke) (in / mm)7" x 10" / 178x254 (3)
Tractive Effort (lbs / kg)4859 / 2204.01
Factor of Adhesion (Weight on Drivers/Tractive Effort)16.14
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)
Firebox Area (sq ft / m2)
Grate Area (sq ft / m2)7 / 0.65
Evaporative Heating Surface (sq ft / m2)125 / 11.62
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)125 / 11.62
Evaporative Heating Surface/Cylinder Volume187.09
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1960
Same as above plus superheater percentage1960
Same as above but substitute firebox area for grate area
Power L1
Power MT

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