Commonwealth Edison / Commonwealth Electric 0-6-0 "Switcher" Locomotives in the USA

Ringaboy: Retro Railware

Modern fabrics meet classic heritage looks. Unique & comfortable retro rail logo shirts & tops for ladies & men. Featuring crew, flowy, hoodies, long sleeve, scoop, slouchy, tank, thermal & V-neck styles. Custom & bulk inquiries welcome.

Class Details by Steve Llanso of Sweat House Media

Class 1 (Locobase 15040)

Data from DeGolyer, Vol 29, p. 168. Works number was 29021 in September 1906.


Class 2 (Locobase 15041)

Data from DeGolyer, Vol 35, p. 294. Works number was 34747 in June 1910.

More powerful and 21 short tons heavier than the #1 of 1906 (Locobase 15040), this saddle-tank was not much longer. The boiler was fatter, but the tubes had the same length as the earlier engine.


Class 4 (Locobase 15042)

Data from DeGolyer, Vol 35, p. 294, Vol 73, pp. 27+. Works numbers were 40112 in July 1913, 55626 in September 1922, and 56723 in July 1923.

The next Baldwin to come to ComEd after the saddle tank of 1910 was this much bigger, but not much longer engine. Water storage now demanded a separate tender and the boiler, while quite a bit larger in diameter, still contained short boiler tubes.

It was an arrangement that worked, one supposes, because the 5 emerged from the same specifications nine years later followed by the 6 ten months after that.

Specifications by Steve Llanso of Sweat House Media
Class124
Locobase ID15,040 15,041 15,042
RailroadCommonwealth ElectricCommonwealth ElectricCommonwealth Edison
CountryUSAUSAUSA
Whyte0-6-0ST0-6-0ST0-6-0
Number in Class113
Road Numbers124-6
GaugeStdStdStd
Number Built113
BuilderBurnham, Williams & CoBaldwinBaldwin
Year190619101913
Valve GearStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)10.83 / 3.3011.50 / 3.51
Engine Wheelbase (ft / m)10.83 / 3.3011.50 / 3.51
Ratio of driving wheelbase to overall engine wheebase11
Overall Wheelbase (engine & tender) (ft / m)10.83 / 3.3043.44 / 13.24
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)110,000 / 49,895152,000 / 68,946154,000 / 69,853
Engine Weight (lbs / kg)110,000 / 49,895152,000 / 68,946154,000 / 69,853
Tender Loaded Weight (lbs / kg)100,000 / 45,359
Total Engine and Tender Weight (lbs / kg)110,000152,000254,000 / 115,212
Tender Water Capacity (gals / ML)1500 / 5.682500 / 9.475000 / 18.94
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)8 / 7.30
Minimum weight of rail (calculated) (lb/yd / kg/m)61 / 30.5084 / 4286 / 43
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)50 / 127050 / 127050 / 1270
Boiler Pressure (psi / kPa)160 / 11180 / 12.40180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)19" x 24" / 483x61020" x 26" / 508x66022" x 26" / 559x660
Tractive Effort (lbs / kg)23,566 / 10689.3731,824 / 14435.1438,507 / 17466.50
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.67 4.78 4.00
Heating Ability
Firebox Area (sq ft / m2)98 / 9.10119 / 11.06192 / 17.84
Grate Area (sq ft / m2)21.26 / 1.9825.30 / 2.3535.10 / 3.26
Evaporative Heating Surface (sq ft / m2)992 / 92.161225 / 113.812216 / 205.87
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)992 / 92.161225 / 113.812216 / 205.87
Evaporative Heating Surface/Cylinder Volume125.96129.58193.72
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation340245546318
Same as above plus superheater percentage340245546318
Same as above but substitute firebox area for grate area15,68021,42034,560
Power L1250928884165
Power MT150.86125.66178.87