Middleburg & Schoharie 2-4-4 Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class Middleburg (Locobase 11150)

Data from Schenectady Locomotive Works, Illustrated Catalogue of Simple and Compound Locomotives (Philadelphia: J B Lippincott, 1897), pp. 192-193. Works number was 4281 in April 1895.

This 5 3/4-mile railroad served resort towns in the Catskill Mountains and was operated by the Albany and Susquehanna Railroad Company. The "Middleburg" ran on this line until the railroad was abandoned in 1936, after which it was scrapped.

Principal Dimensions by Steve Llanso of Sweat House Media
Locobase ID11,150
RailroadMiddleburg & Schoharie
Number in Class17
Road Numbers
Number Built17
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)7 / 4.27
Engine Wheelbase (ft / m)28.75 / 6.50
Ratio of driving wheelbase to overall engine wheebase 0.24
Overall Wheelbase (engine & tender) (ft / m)28.75 / 14.40
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)113,500 / 51,483
Engine Weight (lbs / kg)127,500 / 57,833
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)127,500
Tender Water Capacity (gals / ML)3500 / 13.26
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)95 / 47.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)51 / 1295
Boiler Pressure (psi / kPa)150 / 10.30
High Pressure Cylinders (dia x stroke) (in / mm)20" x 24" / 508x610
Tractive Effort (lbs / kg)24,000 / 10886.23
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.73
Heating Ability
Firebox Area (sq ft / m2)148.40 / 13.79
Grate Area (sq ft / m2)30.90 / 2.87
Evaporative Heating Surface (sq ft / m2)1774 / 164.87
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1774 / 164.87
Evaporative Heating Surface/Cylinder Volume203.29
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4635
Same as above plus superheater percentage4635
Same as above but substitute firebox area for grate area22,260
Power L13676
Power MT142.80

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