St Lawrence & Adirondack 4-6-0 "Ten-wheeler" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 5 (Locobase 11118)

Data from Schenectady Locomotive Works, Illustrated Catalogue of Simple and Compound Locomotives (Philadelphia: J B Lippincott, 1897), pp. 36-37. Works numbers were 2772-2774 in 1897.

This Ten-wheeler design had a relatively small grate to serve such a large boiler.

The 5 and the 7 were relettered for the Rutland and renumbered 249 and 250. 6 was renumbered by the New York Central & Hudson River 1002.

Specifications by Steve Llanso of Sweat House Media
Locobase ID11,118
RailroadSt Lawrence & Adirondack
Number in Class
Road Numbers5-7
Number Built
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)12.83
Engine Wheelbase (ft)23.33
Ratio of driving wheelbase to overall engine wheebase 0.55
Overall Wheelbase (engine & tender) (ft)50.17
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)108,500
Engine Weight (lbs)139,800
Tender Loaded Weight (lbs)
Total Engine and Tender Weight (lbs)
Tender Water Capacity (gals)4500
Tender Fuel Capacity (oil/coal) (gals/tons)
Minimum weight of rail (calculated) (lb/yd)60
Geometry Relating to Tractive Effort
Driver Diameter (in)64
Boiler Pressure (psi)180
High Pressure Cylinders (dia x stroke) (in)20" x 26"
Tractive Effort (lbs)24,863
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.36
Heating Ability
Firebox Area (sq ft)154.24
Grate Area (sq ft)26.96
Evaporative Heating Surface (sq ft)2318
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)2318
Evaporative Heating Surface/Cylinder Volume245.19
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4853
Same as above plus superheater percentage4853
Same as above but substitute firebox area for grate area27,763
Power L16274
Power MT382.45

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