Chicago & Illinois Midland 2-8-0 "Consolidation" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 10 (Locobase 12510)

Data from "Equipment and Supplies - Locomotive Building," Railway Age Gazette, Vol 48, #4 (28 January 1910), p 214. Works number 47769 in April 1910.

In the same year that wide-firebox Consolidations were logged in Alco's order book for the Buffalo & Susquehanna as their 169-178, the line went into receivership. The engines were redirected to several lines and #174 wound up on the C&IM. It

At some later date, the C&IM superheated the boilers and the result is shown in Locobase 7652.


Class C-1 (Locobase 7652)

Data from C&IM 4 -1954 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange.

This single Consolidation was originally ordered by the Buffalo & Susquehanna in 1910 #174 as their , but that railroad couldn't pay for it. So the C&IM bought it in October 1911. The C&IM had been established only five years earlier as a joint venture between Chicago Edison and Commonwealth Electric (both controlled by utilities magnate Samuel Insull) and the Peabody Coal Company.

The 510 was delivered with a saturated boiler, but received a superheater later as is shown in this entry. The design sported 12" (305 mm) piston valves and the firebox heating surface included 26 sq ft (2.42 sq m) of arch tubes.

When the C&IM sold the 510 to Midland Terminal in 1938. that railroad renumbered it 61. They also added a trailing truck to create a 2-8-2 arrangement. Still later, they restored it as a 2-8-0.

Principal Dimensions by Steve Llanso of Sweat House Media
Class10C-1
Locobase ID12,510 7652
RailroadChicago & Illinois MidlandChicago & Illinois Midland
CountryUSAUSA
Whyte2-8-02-8-0
Number in Class11
Road Numbers10/510510
GaugeStdStd
Number Built1
BuilderAlco-BrooksAlco-Brooks
Year1910
Valve GearWalschaertWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)14.2514.25 / 4.34
Engine Wheelbase (ft / m)22.0822.08 / 6.73
Ratio of driving wheelbase to overall engine wheebase 0.65 0.65
Overall Wheelbase (engine & tender) (ft / m)54.20 / 16.52
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)167,000 / 75,750170,520 / 77,347
Engine Weight (lbs / kg)185,000 / 83,915194,280 / 88,124
Tender Loaded Weight (lbs / kg)125,740 / 57,035
Total Engine and Tender Weight (lbs / kg)320,020 / 145,159
Tender Water Capacity (gals / ML)6000 / 22.736200 / 23.48
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)12 / 10.9012 / 10.90
Minimum weight of rail (calculated) (lb/yd / kg/m)70 / 3571 / 35.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)51 / 129551 / 1295
Boiler Pressure (psi / kPa)200 / 13.80190 / 13.10
High Pressure Cylinders (dia x stroke) (in / mm)21" x 28" / 533x71121" x 28" / 533x711
Tractive Effort (lbs / kg)41,160 / 18669.8839,102 / 17736.39
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.06 4.36
Heating Ability
Firebox Area (sq ft / m2)179 / 16.64205 / 19.05
Grate Area (sq ft / m2)54.40 / 5.0654.29 / 5.05
Evaporative Heating Surface (sq ft / m2)2676 / 248.702095 / 194.70
Superheating Surface (sq ft / m2)450 / 41.82
Combined Heating Surface (sq ft / m2)2676 / 248.702545 / 236.52
Evaporative Heating Surface/Cylinder Volume238.40186.64
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation10,88010,315
Same as above plus superheater percentage10,88012,172
Same as above but substitute firebox area for grate area35,80045,961
Power L1540810,316
Power MT285.57533.49

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