Lake Shore & Michigan Southern 4-4-0 "American" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class unknown (Locobase 9518)

Data from the Twelfth Annual Report of the American Railway Master Mechanics' Association, May 13th-May15th, 1879, page 83.

Mr Sedgley of the LS&MS described tests between 7 wagon-top Eight-wheelers and 7 straight-boilered Moguls from Baldwin (Locobase 9517). Although Sedgley made something of the slight difference between the two types, there was not much to choose when the taller drivers of the Eight-wheelers are taken into account.

NB: Boiler pressure is an estimate and the heating surface of the tubes (no firebox area is given) is measured from the inside; water side area would be 8-10% greater.

Principal Dimensions by Steve Llanso of Sweat House Media
Locobase ID9518
RailroadLake Shore & Michigan Southern
Number in Class7
Road Numbers
Gauge4' 9.2""
Number Built7
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)
Engine Wheelbase (ft / m)
Ratio of driving wheelbase to overall engine wheebase
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)
Engine Weight (lbs / kg)
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)60 / 1524
Boiler Pressure (psi / kPa)130 / 9
High Pressure Cylinders (dia x stroke) (in / mm)17" x 24" / 432x610
Tractive Effort (lbs / kg)12,774 / 5794.20
Factor of Adhesion (Weight on Drivers/Tractive Effort)
Heating Ability
Firebox Area (sq ft / m2)
Grate Area (sq ft / m2)15.80 / 1.47
Evaporative Heating Surface (sq ft / m2)893 / 82.99
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)893 / 82.99
Evaporative Heating Surface/Cylinder Volume141.63
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2054
Same as above plus superheater percentage2054
Same as above but substitute firebox area for grate area
Power L1
Power MT

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Wes Barris