Chicago Southern / Chicago, Milwaukee & Saint Paul / Davenport, Rock Island & Northwestern / Milwaukee Road 4-4-0 "American" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 1 (Locobase 12469)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 23, p. 197. Works number was 18555, 18650 in January 1901 and 18699 in February 1901.

Jointly owned by the Chicago, Burlington & Quincy and the Chicago, Milwaukee & St Paul, the DRI & NW was a terminal railroad in the Tri-Cities area that spanned the Mississippi between Iowa and Illinois.

The two owners divvied up the class in 1903-1904.

The 1 came onto the Milwaukee Road roster in 1904 and was joined by the 3 in 1906. The pair was placed in its own H7-c class, numbered 521-522, 746-747, and finally 731-732 and operated for that railroad into the 1920s. Both were scrapped in September 1928.

The Burlington took the #2 in 1903, classed it as A-6, and numbered it 479. Later renumbered 200, the ex-2 was scrapped in April 1923.


Class H3 (Locobase 9876)

Data from Milwaukee Road 1930 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. See also DeGolyer, Volume 10, p. 20. Works numbers were 5049, 5052 5063, 5067 in April 1880p; 5092, 5097, 5120, 5123 in May; and 5134-5135 in June.

Most of these operated for more than 30 years before being scrapped in the 'teens. Ex-304 was sold to Ozone Lumber in 1913.

The Milwaukee Road diagram says that the tube heating surface area was 725 sq ft (67.35 sq m), but shows the same number of tubes of the same diameter and length as in the specs. It's possible that the H3's later boiler had 19 or 20 fewer tubes, but Locobase cannot confirm.


Class H3 (Locobase 9877)

Data from Milwaukee Road 1930 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange.


Class H3 (Locobase 9873)

Data from Milwaukee Road 1930 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange.


Class H3 (Locobase 9875)

Data from Milwaukee Road 1930 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange.


Class H4 (Locobase 9878)

Data from Milwaukee Road 1930 Locomotive Diagram book supplied in May 2005 and CM&StP List and Description of Locomotives 1886 supplied in August 2013 by Allen Stanley from his extensive Rail Data Exchange. Works numbers were 1065-1066 in September 1877; 1091, 1093 in August; 1102-1104 in September; 1273-1274, 1276, 1278-1284 in September 1880; 1322, 1324 in February 1881; 1563-1572 in May 1882.

Data above comes from the 1930 diagram and reflects the consolidation of several locomotive batches under a common update. All the Eight-wheelers came from Schenectady in 1877-1882 as passenger locomotives, but the details vary.

The first set -- 209-210, 221-225 in 1877 were delivered with 17"x 24" cylinders, grates measuring 15.8 sq ft (1.47 m) in area, 160 tubes (209-210) or 170 tubes (221-225), each 11 ft 4 in (3.45 m) long, and 61" (1,549 mm) driver centers--3" tires would yield a 67" driver diameter. They would be upgraded to the specs shown in the data table.

The other batches -- road numbers 358-367, 392-393, 538-547--defined the H4s as shown in the data. Changes from the first group included taller drivers, more cylinder volume, 5" inch longer grates and three more tubes. Adhesion weight rose by 3,400 lb (1,542 kg) and engine weight increased by 5,000 lb (2,271 kg).

All were scrapped inthe 1914-1918 period.


Class H5 (Locobase 9882)

Data from Milwaukee Road 1930 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange.


Class H5 - long pattern (Locobase 9880)

Data from Milwaukee Road 1930 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange.


Class H5 - long pattern (Locobase 9881)

Data from Milwaukee Road 1930 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange.


Class H5 - short pattern (Locobase 9879)

Data from Milwaukee Road 1930 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange.


Class H6 (Locobase 9883)

Data from Milwaukee Road 1930 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange.

This class had many fathers: 10 (original numbers 684-693) from Rhode Island Locomotive Works, 1 from Brooks, 10 from Cooke (721-730), 10 from Grant (works #1723-1731 produced in December 1887, road numbers 731-740).


Class H7 (Locobase 9884)

Data from Milwaukee Road 1930 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange.


Class H7 (Locobase 9886)

Data from Milwaukee Road 1930 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange.


Class H8 (Locobase 9874)

Data from Milwaukee Road 1945 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. See also "Locomotive Building," The Railroad Gazette, Vol XXXVIII, No 17 (28 April 1905), p 149.

This set of relatively large Eight-wheelers came from the Paterson, NJ builder as the CS was completing its construction from Chicago due south to Quaker, Ill (near Dana). Its incorporation in September 1904 soon led to three years of construction before it opened in November 1907.

The 1905 order description for this set of Eight-wheelers included a count of 270 2" tubes, which resulted in a higher heating surface area than the 1945 diagram showed. The 1945 diagram revealed that the firebox heating surface included 12 sq ft of arch tubes.

The CS was reorganized with the Southern Indiana Railroad in 1910 as the Chicago, Terre Haute & Southeastern. And in 1921, the Milwaukee Road negotiated a 999-year lease on CTH&SE. That's when this nonet received its H8 class ID and higher road numbers.

Specifications by Steve Llanso of Sweat House Media
Class1H3H3H3H3
Locobase ID12,469 9876 9877 9873 9875
RailroadDavenport, Rock Island & Northwestern (CMStP&P)Chicago, Milwaukee & Saint Paul (CMStP&P)Milwaukee Road (CMStP&P)Milwaukee Road (CMStP&P)Milwaukee Road (CMStP&P)
CountryUSAUSAUSAUSAUSA
Whyte4-4-04-4-04-4-04-4-04-4-0
Number in Class3106142
Road Numbers1-3299-307 / 116-124165-17086-99107-108
GaugeStdStdStdStdStd
Number Built3106142
BuilderBurnham, Williams & CoBurnham, Parry, Williams & CoseveralTauntonPittsburgh
Year19011880187118731879
Valve GearStephensonStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 8.75 / 2.678 / 2.44 7.25 / 2.21 7.50 / 2.298 / 2.44
Engine Wheelbase (ft / m)23.75 / 7.2421 / 6.4021.33 / 6.5021.50 / 6.5521.67 / 6.61
Ratio of driving wheelbase to overall engine wheebase 0.37 0.38 0.34 0.35 0.37
Overall Wheelbase (engine & tender) (ft / m)52.48 / 1643.75 / 13.3343.33 / 13.2143.50 / 13.26
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)67,000 / 30,39142,750 / 19,39140,400 / 18,32540,000 / 18,14442,800 / 19,414
Engine Weight (lbs / kg)106,000 / 48,08168,550 / 31,09466,650 / 30,23265,700 / 29,80172,700 / 32,976
Tender Loaded Weight (lbs / kg)70,000 / 31,75260,000 / 27,21655,000 / 24,94855,000 / 24,94852,600 / 23,859
Total Engine and Tender Weight (lbs / kg)176,000 / 79,833128,550 / 58,310121,650 / 55,180120,700 / 54,749125,300 / 56,835
Tender Water Capacity (gals / ML)3800 / 14.392000 / 7.582000 / 7.582000 / 7.583200 / 12.12
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT) 4.50 / 4.104 / 3.604 / 3.604 / 3.60
Minimum weight of rail (calculated) (lb/yd / kg/m)56 / 2836 / 1834 / 1733 / 16.5036 / 18
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)68 / 172763 / 160063 / 160063 / 160062 / 1575
Boiler Pressure (psi / kPa)180 / 12.40130 / 9130 / 9130 / 9130 / 9
High Pressure Cylinders (dia x stroke) (in / mm)18" x 24" / 457x61016" x 24" / 406x61016" x 24" / 406x61016" x 24" / 406x61016" x 24" / 406x610
Tractive Effort (lbs / kg)17,496 / 7936.0610,776 / 4887.9210,776 / 4887.9210,776 / 4887.9210,950 / 4966.84
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.83 3.97 3.75 3.71 3.91
Heating Ability
Firebox Area (sq ft / m2)144.50 / 13.4398 / 9.1090 / 8.3696 / 8.9292.20 / 8.57
Grate Area (sq ft / m2)17.60 / 1.6415 / 1.3914.50 / 1.3514.50 / 1.3514.30 / 1.33
Evaporative Heating Surface (sq ft / m2)1623 / 150.84933 / 86.68798 / 74.16806 / 74.91956 / 88.85
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1623 / 150.84933 / 86.68798 / 74.16806 / 74.91956 / 88.85
Evaporative Heating Surface/Cylinder Volume229.61167.05142.88144.31171.17
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation31681950188518851859
Same as above plus superheater percentage31681950188518851859
Same as above but substitute firebox area for grate area26,01012,74011,70012,48011,986
Power L167693478305031433408
Power MT445.46358.72332.88346.46351.09

Specifications by Steve Llanso of Sweat House Media
ClassH4H5H5 - long patternH5 - long patternH5 - short pattern
Locobase ID9878 9882 9880 9881 9879
RailroadMilwaukee Road (CMStP&P)Milwaukee Road (CMStP&P)Milwaukee Road (CMStP&P)Milwaukee Road (CMStP&P)Milwaukee Road (CMStP&P)
CountryUSAUSAUSAUSAUSA
Whyte4-4-04-4-04-4-04-4-04-4-0
Number in Class29790415
Road Numbers209-210, 221-225, 358-367, 392-393/750-768/203-231337-343315-404405-408300-314
GaugeStdStdStdStdStd
Number Built29790415
BuilderCMStP&PMilwaukeeRhode IslandManchesterRhode Island
Year18771893187918821879
Valve GearStephensonStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 8.50 / 2.59 8.50 / 2.59 8.50 / 2.59 8.50 / 2.59 8.50 / 2.59
Engine Wheelbase (ft / m)22.50 / 6.8622.33 / 6.8123.25 / 7.0923.25 / 7.0922.75 / 6.93
Ratio of driving wheelbase to overall engine wheebase 0.38 0.38 0.37 0.37 0.37
Overall Wheelbase (engine & tender) (ft / m)44.71 / 13.6344.87 / 13.6845.54 / 13.8845.54 / 13.8845.04 / 13.73
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)50,000 / 22,68054,000 / 24,49455,000 / 24,94855,000 / 24,94852,100 / 23,632
Engine Weight (lbs / kg)81,000 / 36,74186,000 / 39,00985,000 / 38,55585,000 / 38,55581,220 / 36,841
Tender Loaded Weight (lbs / kg)60,000 / 27,21668,000 / 30,84460,000 / 27,21660,000 / 27,21660,000 / 27,216
Total Engine and Tender Weight (lbs / kg)141,000 / 63,957154,000 / 69,853145,000 / 65,771145,000 / 65,771141,220 / 64,057
Tender Water Capacity (gals / ML)2800 / 10.613600 / 13.642700 / 10.232700 / 10.232700 / 10.23
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)5 / 4.505 / 4.50 4.50 / 4.10 4.50 / 4.10 4.50 / 4.10
Minimum weight of rail (calculated) (lb/yd / kg/m)42 / 2145 / 22.5046 / 2346 / 2343 / 21.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)69 / 175363 / 160063 / 160063 / 160063 / 1600
Boiler Pressure (psi / kPa)140 / 9.70160 / 11140 / 9.70140 / 9.70140 / 9.70
High Pressure Cylinders (dia x stroke) (in / mm)17" x 24" / 432x61016" x 24" / 406x61017" x 24" / 432x61017" x 24" / 432x61017" x 24" / 432x610
Tractive Effort (lbs / kg)11,962 / 5425.8813,263 / 6016.0013,101 / 5942.5213,101 / 5942.5213,101 / 5942.52
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.18 4.07 4.20 4.20 3.98
Heating Ability
Firebox Area (sq ft / m2)120 / 11.15106 / 9.85120 / 11.15120 / 11.15120 / 11.15
Grate Area (sq ft / m2)17.10 / 1.5917.50 / 1.6317.20 / 1.6017.20 / 1.6017.20 / 1.60
Evaporative Heating Surface (sq ft / m2)1030 / 95.72892 / 82.901090 / 101.301090 / 101.301090 / 101.30
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1030 / 95.72892 / 82.901090 / 101.301090 / 101.301090 / 101.30
Evaporative Heating Surface/Cylinder Volume163.36159.71172.88172.88172.88
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation23942800240824082408
Same as above plus superheater percentage23942800240824082408
Same as above but substitute firebox area for grate area16,80016,96016,80016,80016,800
Power L141624277394039403940
Power MT367.03349.23315.86315.86333.44

Specifications by Steve Llanso of Sweat House Media
ClassH6H7H7H8
Locobase ID9883 9884 9886 9874
RailroadMilwaukee Road (CMStP&P)Milwaukee Road (CMStP&P)Milwaukee Road (CMStP&P)Chicago Southern (CMStP&P)
CountryUSAUSAUSAUSA
Whyte4-4-04-4-04-4-04-4-0
Number in Class3118109
Road Numbers500-530700-717721-730900-908
GaugeStdStdStdStd
Number Built3118109
BuilderseveralRhode IslandSchenectadyRogers
Year1886188218891904
Valve GearStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 8.50 / 2.59 8.50 / 2.59 8.50 / 2.598 / 2.44
Engine Wheelbase (ft / m)23.25 / 7.0923.25 / 7.0923.25 / 7.0922.83 / 6.96
Ratio of driving wheelbase to overall engine wheebase 0.37 0.37 0.37 0.35
Overall Wheelbase (engine & tender) (ft / m)45.79 / 13.9645.54 / 13.8845.96 / 14.0149.90 / 15.21
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)64,000 / 29,03060,000 / 27,21660,000 / 27,21685,600 / 38,828
Engine Weight (lbs / kg)100,100 / 45,40594,000 / 42,63897,000 / 43,999131,000 / 59,421
Tender Loaded Weight (lbs / kg)78,000 / 35,38060,000 / 27,21678,000 / 35,380112,000 / 50,802
Total Engine and Tender Weight (lbs / kg)178,100 / 80,785154,000 / 69,854175,000 / 79,379243,000 / 110,223
Tender Water Capacity (gals / ML)3800 / 14.392700 / 10.232700 / 10.235000 / 18.94
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)5 / 4.505 / 4.505 / 4.5010 / 9.10
Minimum weight of rail (calculated) (lb/yd / kg/m)53 / 26.5050 / 2550 / 2571 / 35.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)70 / 177863 / 160063 / 160067 / 1702
Boiler Pressure (psi / kPa)150 / 10.30150 / 10.30180 / 12.40180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)18" x 24" / 457x61018" x 24" / 457x61017" x 24" / 432x61018" x 26" / 457x660
Tractive Effort (lbs / kg)14,163 / 6424.2415,737 / 7138.1916,845 / 7640.7719,237 / 8725.77
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.52 3.81 3.56 4.45
Heating Ability
Firebox Area (sq ft / m2)123 / 11.43127 / 11.80130 / 12.08148 / 13.75
Grate Area (sq ft / m2)17.50 / 1.6317.20 / 1.6017 / 1.5826.80 / 2.49
Evaporative Heating Surface (sq ft / m2)1390 / 129.181215 / 112.921177 / 109.391729 / 160.69
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1390 / 129.181215 / 112.921177 / 109.391729 / 160.69
Evaporative Heating Surface/Cylinder Volume196.64171.89186.68225.79
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2625258030604824
Same as above plus superheater percentage2625258030604824
Same as above but substitute firebox area for grate area18,45019,05023,40026,640
Power L14964412254776481
Power MT341.99302.91402.49333.84

Reference