AB Hitchcock, logger 0-6-0 "Switcher" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class Harry (Locobase 3931)

Data from Railroad Gazette (16 March 1900). Works number was 2939 in 1900.

In the same Railroad Gazette article that described the new class of G-6 Consolidations being delivered to the Chesapeake & Ohio, this little logger's saddle-tank tea kettle also was described. It was illustrated standing on the same track as the 2-8-0, which weighed 6 times as much, RG noted. Although it seems unlikely that so small an engine would run on standard gauge, the picture suggests that this was so.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID3931
RailroadAB Hitchcock, logger
Number in Class1
Road Numbers
Number Built1
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 7.67 / 2.34
Engine Wheelbase (ft / m) 7.67
Ratio of driving wheelbase to overall engine wheelbase1
Overall Wheelbase (engine & tender) (ft / m) 7.67 / 2.34
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)33,000 / 14,969
Engine Weight (lbs / kg)33,000 / 14,969
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)33,000
Tender Water Capacity (gals / ML)
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)18 / 9
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)31 / 787
Boiler Pressure (psi / kPa)150 / 10.30
High Pressure Cylinders (dia x stroke) (in / mm)10" x 16" / 254x406
Tractive Effort (lbs / kg)6581 / 2985.09
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.01
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)
Firebox Area (sq ft / m2)39.43 / 3.66
Grate Area (sq ft / m2) 5.25 / 0.49
Evaporative Heating Surface (sq ft / m2)280 / 26.02
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)280 / 26.02
Evaporative Heating Surface/Cylinder Volume193.10
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation788
Same as above plus superheater percentage788
Same as above but substitute firebox area for grate area5915
Power L12550
Power MT511.07

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