The Chicago & Eastern Illinois Railway bought its first "Mikado" type locomotives from the American Locomotive Company and they were delivered in 1912. These locomotives were designated as Class N-1 and assigned road numbers 1900 through 1924. They had 63" diameter drivers, 28" x 30" cylinders, a 175 psi boiler pressure, exerted 55,533 pounds of tractive effort and each weighed 300,000 pounds. The firebox was 256.5 square feet and the evaporative heating surface was 4,259 square feet and with the superheater the combined heating surface was 5,343 square feet.
In 1918, the USRA allocated fifteen ALCO-built "Mikado-Light" locomotives to the C&E1. They were designated as Class N-2 and assigned road numbers 1925 through 1939. These locomotives had 63" diameter drivers, 26" x 30" cylinders, a 200 psi boiler pressure, they exerted 54,723 pounds of tractive effort and each weighed 290,000 pounds.
A final group of twenty 2-8-2s came from ALCO during 1922 and 1923. These locomotives were designated as Class N-3 and assigned road numbers 1940 through 1959. They had 63" diameter drivers, 28" x 30" cylinders and each weighed 317,500 pounds. The firebox was 241 square feet and the evaporative heating surface was 4,051 square feet and with the superheater the combined heating surface was 5,161 square feet. Later the boiler pressure was raised to 190 psi which increased the tractive effort to 60,293 pounds.
There are no surviving C&EI 2-8-2 "Mikado" type locomotives.
|Class||Qty.||Road Numbers||Year Built||Builder||Notes|
Charles Kratz in Drury (1993) says of these 25 engines : "They were fast and powerful and they changed the C&EI did business."
Based on the light USRA design, but there are some small, slight differences. 1930 blew up on 4 January 1940 and was scrapped in the next month. The others all retired August 1949 to August 1950.
These Mikes represent the difficulty in sustaining any effort at standardization as represented by the USRA series. Although they had very similar tube and flue layouts, their grates were considerably smaller because the firebox was 12" shorter. At the same time, cylinder volume increased when the diameters grew by 2". The cab's roof included a clerestory.
|Specifications by Steve Llanso of Sweat House Media|
|Railroad||Chicago & Eastern Illinois (C&EI)||Chicago & Eastern Illinois (C&EI)||Chicago & Eastern Illinois (C&EI)|
|Locomotive Length and Weight|
|Ratio of driving wheelbase to overall engine wheebase||0.47||0.46||0.46|
|Overall Wheelbase (engine & tender)||67.02'||71.38'||70.87'|
|Axle Loading (Maximum Weight per Axle)||60600 lbs|
|Weight on Drivers||220500 lbs||220000 lbs||232500 lbs|
|Engine Weight||300000 lbs||292000 lbs||317500 lbs|
|Tender Light Weight||171300 lbs||185400 lbs||192000 lbs|
|Total Engine and Tender Weight||471300 lbs||477400 lbs||509500 lbs|
|Tender Water Capacity||9000 gals||10000 gals||10000 gals|
|Tender Fuel Capacity (oil/coal)||14 tons||16 tons||16 tons|
|Minimum weight of rail (calculated)||92 lb/yard||92 lb/yard||97 lb/yard|
|Geometry Relating to Tractive Effort|
|Boiler Pressure||175 psi||200 psi||190 psi|
|Cylinders (dia x stroke)||28" x 30"||26" x 30"||28" x 30"|
|Tractive Effort||55533 lbs||54724 lbs||60293 lbs|
|Factor of Adhesion (Weight on Drivers/Tractive Effort)||3.97||4.02||3.86|
|Firebox Area||256.50 sq. ft||240 sq. ft||241 sq. ft|
|Grate Area||57 sq. ft||66.70 sq. ft||57 sq. ft|
|Evaporative Heating Surface||4259 sq. ft||4000 sq. ft||4051 sq. ft|
|Superheating Surface||1084 sq. ft||962 sq. ft||1110 sq. ft|
|Combined Heating Surface||5343 sq. ft||4962 sq. ft||5161 sq. ft|
|Evaporative Heating Surface/Cylinder Volume||199.20||216.98||189.47|
|Computations Relating to Power Output (More Information)|
|Robert LeMassena's Power Computation||9975||13340||10830|
|Same as above plus superheater percentage||11970||15875||13213|
|Same as above but substitute firebox area for grate area||53865||57120||55864|