several 2-2-2 Locomotives in Germany

Class Details by Steve Llanso of Sweat House Media

Class Sharpie (Locobase 667)

Data from Gustav Reder (Michael Reynolds, trans), The world of steam locomotives (New York: Putnam, 1974).

This is a later, and larger version of Stephenson's Patentee engine design executed by Sharp, Roberts, & Company. Sharpies soon competed with Stephenson locomotives in several countries. The Baden State Railroad bought six in 1839 and nine more were built in the Karlsruhe shops to the Baden State railroad design. Many Sharpies had a bowed frame over the driving axle, which enabled the axle horns to be shortened and welded directly to the frame. The Sharp locomotive described in the specifications is an 1845 example fitted with Stephenson's link motion.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID667
Number in Class15
Road Numbers
Number Built15
BuilderSharp Brothers
Valve GearStephenson
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)
Engine Weight (lbs / kg)47,407 / 21,503
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)
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)66 / 1676
Boiler Pressure (psi / kPa)75 / 5.20
High Pressure Cylinders (dia x stroke) (in / mm)16" x 20" / 406x508
Tractive Effort (lbs / kg)4945 / 2243.02
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)
Grate Area (sq ft / m2)12.60 / 1.17
Evaporative Heating Surface (sq ft / m2)920 / 85.50
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)920 / 85.50
Evaporative Heating Surface/Cylinder Volume197.67
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation945
Same as above plus superheater percentage945
Same as above but substitute firebox area for grate area
Power L1
Power MT

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Wes Barris