South Manchester 2-4-4 Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 3 (Locobase 12403)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 41, p. 179. Works number was 17597 in March 1900.

The SMR covered 2.25 miles from South Manchester to North Manchester. This tank was one of two locomotives operating on the line, which shuttled back and forth between connections to larger railroads.


Class 4 (Locobase 13923)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 41, p. 179. (Thanks to Chris Hohl for his 4 April 2023 email correcting the boiler pressure.) Works number was 36441 in April 1911.

Eleven years after the SMRR took delivery of a 2-4-4T from Baldwin, it went back to Philadelphia for a significantly larger version. Baldwin reused the design from the 1908 Rahway Valley (Locobase 12884), a relatively large example of this wheel arrangement.

Principal Dimensions by Steve Llanso of Middle Run Media
Class34
Locobase ID12403 13923
RailroadSouth ManchesterSouth Manchester
CountryUSAUSA
Whyte2-4-4T2-4-4T
Number in Class11
Road Numbers34
GaugeStdStd
Number Built11
BuilderBurnham, Williams & CoBaldwin
Year19001911
Valve GearStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)7 / 2.137 / 2.13
Engine Wheelbase (ft / m)28.50 / 8.6931.33 / 9.55
Ratio of driving wheelbase to overall engine wheelbase 0.25 0.22
Overall Wheelbase (engine & tender) (ft / m)28.50 / 8.6931.33 / 9.55
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)54,000 / 24,49474,700 / 33,883
Engine Weight (lbs / kg)95,000 / 43,091150,300 / 68,175
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)1200 / 4.552500 / 9.47
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)3 / 3
Minimum weight of rail (calculated) (lb/yd / kg/m)45 / 22.5062 / 31
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)51 / 129556 / 1422
Boiler Pressure (psi / kPa)160 / 1100180 / 1100
High Pressure Cylinders (dia x stroke) (in / mm)15" x 22" / 381x55917" x 24" / 432x610
Tractive Effort (lbs / kg)13,200 / 5987.4318,950 / 8595.59
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.09 3.94
Heating Ability
Tubes (number - dia) (in / mm)158 - 2" / 51223 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)11.17 / 3.4011.58 / 3.53
Firebox Area (sq ft / m2)87.70 / 8.15152 / 14.12
Grate Area (sq ft / m2)14 / 1.3018.20 / 1.69
Evaporative Heating Surface (sq ft / m2)1005 / 93.401495 / 138.89
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1005 / 93.401495 / 138.89
Evaporative Heating Surface/Cylinder Volume223.33236.93
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation22403276
Same as above plus superheater percentage22403276
Same as above but substitute firebox area for grate area14,03227,360
Power L143636004
Power MT356.25354.39

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