South Buffalo 4-6-0 "Ten-Wheeler" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 8 (Locobase 12685)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 25, p.289. Works number was 22063 in April 1903.

Momentarily infatuated with the Vanderbilt boiler (see Locobases 4104 and 5257 entries for further comments on the stayless-firebox design), the South Buffalo bought this Ten-wheeler and added the two Consolidations shown in Locobase 12672 a month later. It's not clear whether the SB ever rebuilt this engine, which was retired in the mid-1920s.

Principal Dimensions by Steve Llanso of Sweat House Media
Locobase ID12,685
RailroadSouth Buffalo
Number in Class1
Road Numbers8
Number Built1
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)13.50 / 4.11
Engine Wheelbase (ft / m)24.33 / 7.42
Ratio of driving wheelbase to overall engine wheebase 0.55
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)146,000 / 66,225
Engine Weight (lbs / kg)174,000 / 78,925
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)4000 / 15.15
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)81 / 40.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)62 / 1575
Boiler Pressure (psi / kPa)160 / 11
High Pressure Cylinders (dia x stroke) (in / mm)20" x 28" / 508x711
Tractive Effort (lbs / kg)24,568 / 11143.87
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.94
Heating Ability
Firebox Area (sq ft / m2)135 / 12.55
Grate Area (sq ft / m2)35.70 / 3.32
Evaporative Heating Surface (sq ft / m2)2502 / 232.53
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)2502 / 232.53
Evaporative Heating Surface/Cylinder Volume245.75
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation5712
Same as above plus superheater percentage5712
Same as above but substitute firebox area for grate area21,600
Power L15159
Power MT233.70

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Wes Barris