Chicago Great Western / Chicago Saint Paul & Kansas City / Minnesota & Northwestern 4-4-0 "American" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 33/C10 (Locobase 4158)

Data from CGW 1904 Locomotive Diagrams supplied in August 2013 by Allen Stanley from his extensive Raildata collection.

These five members of the large Cooke class of Eight-wheelers delivered in 1885 were rebuilt by the CGW in 1904 and 1908. Most of the engines gained another decade or so of additional service.

Class A/C8 (Locobase 4154)

See for the original 1917 railroad diagrams and CGW 7 - 1902 Locomotive Diagrams supplied in August 2016 by Allen Stanley from his extensive Raildata collection. Works numbers were 1652-1654 in December 1885 and 1655-1659 in April 1886, 1660-1664 in May, 1665-1672 in June, 1673-1674 in July, 1809-1816 in July 1887, 1817-1824 in January 1888, 1825-1826 in February, 1827-1828 in March, 1829-1832 in April.

These Eight-wheelers were small and numerous, a very large class for the time.

Jerry L. Huddleston explains, on (visited 11 August 2004), that the M&NW was the 110-mile predecessor of the Chicago Great Western that opened in 1885 by the "imaginative and energetic Minnesotan, A.B. Stickney". Stickney soon extended the M&NW to Kansas City and Chicago. Two years later, he merged the M & NW with the Chicago, St Paul, & Kansas City (CStPKC), which he also owned. Finally, Stickney merged the CStP&KC with the CGW in 1892.

Class B/C11 (Locobase 4153)

Data from CGW 1917 Locomotive Diagrams supplied in May 2005 by Allen Stanley. See also "Minnesota & Northwestern Locomotives," National Car and Locomotive Builder (January 1888), p. 14. Works numbers were 1833-1834 in October 1887, 1835-1838 in November.

As for this class, Locobase believes that the following breathless description refers to this class:

"There are no finer looking or better working locomotives running out of St Paul than the new passenger engines of the Minnesota & Northwestern,."

The article tells us that general master mechanic T W Heintzelman intended these engines "to run fast heavy passenger trains on time over a road having heavy grades, and accordingly they have been made large to suit the work They stand high in the frames, but they ride very steady even at the highest speeds."

Large indeed--this class had some of the largest boilers on an Eight-wheeler in the decade of the 1880s.

Unfortunately, the account doesn't include any heating surfaces, although it does supply the tube count and diameter.

There are plenty of clues, however, to point us toward what would later be called the C11s. The report says the engines were built in Paterson. It credits them with 19" cylinders, 256 tubes, and weights somewhat lower than the ones shown in the 1917 diagram.

Class C14 (Locobase 4159)

See for the original 1917 railroad diagrams.

Locobase cannot match up this class to any entry in the compilation of Cooke locomotives by B.Rumary (25 Kingscombe, Gurney Slade, Radstock, BA3 4TH, ENGLAND) and supplied to Locobase by Allen Stanley in March 2004.

Class C9 (Locobase 4155)

See for the original 1917 railroad diagrams. Very similar to C8, but boasting a larger boiler and grate with higher boiler pressure.

According to a compilation of Cooke locomotives by B.Rumary (25 Kingscombe, Gurney Slade, Radstock, BA3 4TH, ENGLAND) and supplied to Locobase by Allen Stanley in March 2004, works numbers were 1939-1943 (November 1888). Four years later the CStP&KC would be merged with the Chicago Great Western.

Specifications by Steve Llanso of Sweat House Media
Locobase ID4158 4154 4153 4159 4155
RailroadChicago Great Western (CGW)Minnesota & Northwestern (CGW)Minnesota & Northwestern (CGW)Chicago Saint Paul & Kansas City (CGW)Chicago Saint Paul & Kansas City (CGW)
Number in Class548665
Road Numbers33-34, 37-3913-36, 41-48, 55-7049-54/90-9581, 84, 85111-115 / 66
Number Built48665
Valve GearStephensonStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase 8.50' 8.50' 8.50' 9.09' 8.50'
Engine Wheelbase23.10'23.10'24'24.04'23.10'
Ratio of driving wheelbase to overall engine wheebase 0.37 0.37 0.35 0.38 0.37
Overall Wheelbase (engine & tender)45.50'48.54'51.01'46.48'48.54'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers62500 lbs55000 lbs73600 lbs69900 lbs62000 lbs
Engine Weight100500 lbs85300 lbs117300 lbs108600 lbs96000 lbs
Tender Light Weight71000 lbs68000 lbs89100 lbs89100 lbs86350 lbs
Total Engine and Tender Weight171500 lbs153300 lbs206400 lbs197700 lbs182350 lbs
Tender Water Capacity3500 gals3000 gals5000 gals4000 gals4000 gals
Tender Fuel Capacity (oil/coal)8 tons8 tons tons11 tons7 tons
Minimum weight of rail (calculated)52 lb/yard46 lb/yard61 lb/yard58 lb/yard52 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter63"63"68"68"63"
Boiler Pressure160 psi145 psi170 psi155 psi155 psi
Cylinders (dia x stroke)17" x 24"17" x 24"19" x 24"19" x 24"17" x 24"
Tractive Effort14973 lbs13569 lbs18411 lbs16787 lbs14505 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.17 4.05 4.00 4.16 4.27
Heating Ability
Firebox Area126 sq. ft111.75 sq. ft141.53 sq. ft135.40 sq. ft113.50 sq. ft
Grate Area16.43 sq. ft17 sq. ft20.50 sq. ft17 sq. ft20.90 sq. ft
Evaporative Heating Surface1390 sq. ft1062 sq. ft1775 sq. ft1745 sq. ft1415 sq. ft
Superheating Surface
Combined Heating Surface1390 sq. ft1062 sq. ft1775 sq. ft1745 sq. ft1415 sq. ft
Evaporative Heating Surface/Cylinder Volume220.46168.44225.37221.56224.42
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation26292465348526353240
Same as above plus superheater percentage26292465348526353240
Same as above but substitute firebox area for grate area2016016204240602098717593
Power L153823914607354025117
Power MT379.69313.78363.82340.75363.90


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