several 2-2-2 Locomotives in Great_Britain

Class Details by Steve Llanso of Sweat House Media

Class Patentee (Locobase 666)

Stephenson's patent covered the addition of a trailing axle to carry a larger boiler and the elimination of the flange on the driving axle. These Patentees were widely distributed and came into their own as successful passenger engines. See the first German locomotive (the ADLER) and the first Belgian-built locomotive (LE BELGE), which was delivered in 1835 by Cockerill.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID666
CountryGreat Britain
Number in Class
Road Numbers
Number Built
BuilderRobert Stephenson & Co
Valve Gear
Locomotive Length and Weight
Driver Wheelbase (ft / m)
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)9637 / 4371
Engine Weight (lbs / kg)22,644 / 10,271
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)16 / 8
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)66 / 1676
Boiler Pressure (psi / kPa)
High Pressure Cylinders (dia x stroke) (in / mm)11" x 18" / 279x457
Tractive Effort (lbs / kg)
Factor of Adhesion (Weight on Drivers/Tractive Effort)
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)
Firebox Area (sq ft / m2)55.98 / 5.20
Grate Area (sq ft / m2) 9.90 / 0.92
Evaporative Heating Surface (sq ft / m2)482 / 44.80
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)482 / 44.80
Evaporative Heating Surface/Cylinder Volume243.45
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation
Same as above plus superheater percentage
Same as above but substitute firebox area for grate area
Power L1
Power MT

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