Toledo, St Louis & Western 4-4-2 "Atlantic" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class C / E-3 (Locobase 6584)

Data from T, St L & W's 1911 and 1924 locomotive diagram books supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. Works numbers were 29270-29271 in March 1904.

Known as the Clover Leaf, this railroad always skated close to the financial brink (see Locobase 2517). But it had grand enough pretensions to jump on the Atlantic bandwagon. This Brooks pair cost the line $16,750 each in 1904, according to the 1924 book. They were calculated to develop 1,202 HP in the cylinders and 1,090 from the boiler's measurements.

The Nickel Plate snapped up the Clover Leaf in 1923, at which point the two 4-4-2s had 7s added to their numbers. Retirement came in March 1933.

Principal Dimensions by Steve Llanso of Sweat House Media
ClassC / E-3
Locobase ID6584
RailroadToledo, St Louis & Western (Nickel Plate)
Number in Class2
Road Numbers44-45
Number Built2
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 6.67 / 2.03
Engine Wheelbase (ft / m)27.67 / 8.43
Ratio of driving wheelbase to overall engine wheebase 0.24
Overall Wheelbase (engine & tender) (ft / m)52.98 / 16.15
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)89,000 / 40,370
Engine Weight (lbs / kg)152,000 / 68,946
Tender Loaded Weight (lbs / kg)117,300 / 53,206
Total Engine and Tender Weight (lbs / kg)269,300 / 122,152
Tender Water Capacity (gals / ML)6000 / 22.73
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)10 / 9.10
Minimum weight of rail (calculated) (lb/yd / kg/m)74 / 37
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)73 / 1854
Boiler Pressure (psi / kPa)200 / 13.80
High Pressure Cylinders (dia x stroke) (in / mm)19" x 26" / 483x660
Tractive Effort (lbs / kg)21,858 / 9914.63
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.07
Heating Ability
Firebox Area (sq ft / m2)140.40 / 13.05
Grate Area (sq ft / m2)42.50 / 3.95
Evaporative Heating Surface (sq ft / m2)2185 / 203.07
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)2185 / 203.07
Evaporative Heating Surface/Cylinder Volume256.09
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation8500
Same as above plus superheater percentage8500
Same as above but substitute firebox area for grate area28,080
Power L18234
Power MT407.93

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Wes Barris