Jones & McLaughlin Steel 0-4-0 Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 3 (Locobase 10806)

Data from "Pittsburgh Four-Wheel Saddle Tank Engine", Railway & Locomotive Engineering, Vol XIII, No. 1 (January 1900), p. 8. Probably works number 1700 in March 1897, 1701 in April, and 1777-1778 in January 1898.

The saddle-tank on this diminuitive industrial switcher had a flat top that was exactly even with the top of the cab and the stack. Rumary's list of Pittsburgh locomotives identifies these as 0-4-0s (implying a tender), but the number on the cab in the R & LE illustration is 4, suggesting that it was this saddle-tank design that was delivered.

Specifications by Steve Llanso of Sweat House Media
Locobase ID10806
RailroadJones & McLaughlin Steel
Number in Class4
Road Numbers3-6
Number Built4
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase4'
Engine Wheelbase4'
Ratio of driving wheelbase to overall engine wheebase1
Overall Wheelbase (engine & tender)4'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers31000 lbs
Engine Weight31000 lbs
Tender Light Weight
Total Engine and Tender Weight31000 lbs
Tender Water Capacity450 gals
Tender Fuel Capacity (oil/coal)
Minimum weight of rail (calculated)26 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter28"
Boiler Pressure180 psi
Cylinders (dia x stroke)11" x 14"
Tractive Effort9257 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.35
Heating Ability
Firebox Area33 sq. ft
Grate Area 6.46 sq. ft
Evaporative Heating Surface301 sq. ft
Superheating Surface
Combined Heating Surface301 sq. ft
Evaporative Heating Surface/Cylinder Volume195.47
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1163
Same as above plus superheater percentage1163
Same as above but substitute firebox area for grate area5940
Power L12542
Power MT361.56

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