Minneapolis & Pacific / Minneapolis, Sault Ste Marie & Atlantic / Minneapolis, St Paul & Sault Ste Marie / Wisconsin Central 4-4-0 "American" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 60/C-21 (Locobase 8768)

Data from Soo 9 - 1943 Steam Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. Works numbers were 2022-2035 in 1885.

This was the first group of several classes of Eight-wheelers that came from Schenectady to the Soo system.


Class 82/C-22 (Locobase 8769)

Data from Soo 9 - 1943 Steam Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. Works numbers were 2189-2199 in 1886.

Continuing the line of Eight-wheelers begun by the C-21 class (Locobase 8768), Schenectady added a foot to the boiler tubes. The design was otherwise similar to the C-21s.


Class C-23 (Locobase 8770)

Data from Soo 9 - 1943 Steam Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. See also DeGolyer, Volume 13, p. 148. Works numbers were 8274, 8282 in December 1886; 8332, 8335 in January 1887; 8436-8440, 8444, 8446-8447 in March.

When Baldwin began building its version of Schenectady's C-22 (see Locobase 8769) a year later, it reduced the grate's length by 1/4" and delivered the C-23. The two locomotive designs were otherwise identical.

Most C-23s were scrapped or retired in the 'teens. 2029-2030, 2033 were scrapped in 1928; 2036 went in 1930.


Class C-24 (Locobase 8771)

Data from Soo 9 - 1943 Steam Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange.

Locobase sees this lone locomotive and wonders at its origins. Its drivers stood at passenger-train height and were quite a bit taller than the other Soo Eight-wheelers of the day. Also, its boiler was pressed to a significantly higher pressure.


Class C-4 / C-5 (Locobase 8763)

Data from Soo 9 - 1943 Steam Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. DeGolyer, Volume 13, p 235. Works numbers were 7635 in June 1885

1886

7974 and 7981 in June; 8063 in July; 8067, 8071 in August; 8148, 8157 in September; 8196-8197, 8200-8201 in October; and 8234-8236 in November.

1887

8503-8506, 8510, and 8512 in April; 8580, 8588, 8593-8596, 8641-8642, 8644-8645 in June; 8648-8652, 8685, 8687, 8691-8695 in July; and 8697-8698 in August.

This large class of Eight-wheelers came from Baldwin as C-4 and C-5 Eight-wheelers in 1886-1887 and were delivered to the Minneapolis & Pacific at first, which was reorganized as the Minneapolis, Sault Ste Marie & Atlantic in 1886.

The principal difference between the two classes appears to have been the size of the tender's water tank. C-4s trailed a 3,000-gallon tender; C-5s pulled the 3,500-gallon tank shown in the specs. Three --8063, 8200, and 8685-- operated on the Bismarck, Washburn & Great Falls for a while and were returned to the Soo in 1904.

Some were later superheated; see Locobase 8767.


Class C-4 / C-5s (Locobase 8767)

Data from Soo Miscellaneous Steam Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange.

Locobase does not know how many of the orginal group of Eight-wheelers (Locobase 8763) was superheated; the diagram book shows just one. Superheating so small a 4-4-0 represents a lot of effort for apparently modest results. On the other hand, the boiler was probably out of time anyway and the light axle-loading probably made this engine indispensable within its operating territory.


Class W D Washburn/C (Locobase 8766)

Data from Soo 9 - 1943 Steam Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. See also DeGolyer, Volume 13, p. 84. Works numbers were 8175-8177 in October 1886 and 8259-8260, 8262 in November.

Of the six class Cs that were originally bought in 1886, the names of the October engines were W D Washburn (5), R B Langdon (6), and Thomas Lowry (7) while the November batch was named John Martin (14), H E Fletcher (15), and C H Pettit (16). The engines' boilers were ordered with 161 tubes.

The MP soon was reorganized as the Minneapolis, Sault Ste Marie & Atlantic and ultimately Minneapolis, St Paul & Sault Ste Marie, the name changes implying considerable shrinkage in the scale of the project's ambition.

Specifications by Steve Llanso of Sweat House Media
Class60/C-2182/C-22C-23C-24C-4 / C-5
Locobase ID8768 8769 8770 8771 8763
RailroadWisconsin Central (Soo)Wisconsin Central (Soo)Wisconsin Central (Soo)Minneapolis, St Paul & Sault Ste Marie (Soo)Minneapolis, Sault Ste Marie & Atlantic (Soo)
CountryUSAUSAUSAUSAUSA
Whyte4-4-04-4-04-4-04-4-04-4-0
Number in Class141112144
Road Numbers60-74/2002-201582-92/2017-202795-106/2028-20392040
GaugeStdStdStdStdStd
Number Built141112144
BuilderSchenectadySchenectadyBurnham, Parry, Williams & CoBrooksBurnham, Parry, Williams & Co
Year18851886188718901886
Valve GearStephensonStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 8.50 / 2.59 8.50 / 2.59 8.50 / 2.599 / 2.74 8.50 / 2.59
Engine Wheelbase (ft / m)23.25 / 7.0923.25 / 7.0923.42 / 7.1426.04 / 7.9423.25 / 7.09
Ratio of driving wheelbase to overall engine wheebase 0.37 0.37 0.36 0.35 0.37
Overall Wheelbase (engine & tender) (ft / m)44.17 / 13.4645.17 / 13.7745.17 / 13.7747.96 / 14.6246.50 / 14.17
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)56,400 / 25,58360,000 / 27,21657,450 / 26,05963,750 / 28,91760,500 / 27,442
Engine Weight (lbs / kg)89,000 / 40,37092,600 / 42,00392,000 / 41,731106,000 / 48,08194,200 / 42,728
Tender Loaded Weight (lbs / kg)68,100 / 30,89068,100 / 30,89069,950 / 31,72982,900 / 37,60375,160 / 34,092
Total Engine and Tender Weight (lbs / kg)157,100 / 71,260160,700 / 72,893161,950 / 73,460188,900 / 85,684169,360 / 76,820
Tender Water Capacity (gals / ML)3500 / 13.263500 / 13.263600 / 13.643700 / 14.023500 / 13.26
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)7 / 6.407 / 6.407 / 6.40 7.50 / 6.808 / 7.30
Minimum weight of rail (calculated) (lb/yd / kg/m)47 / 23.5050 / 2548 / 2453 / 26.5050 / 25
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)63 / 160063 / 160063 / 160073 / 185463 / 1600
Boiler Pressure (psi / kPa)145 / 10145 / 10130 / 9175 / 12.10145 / 10
High Pressure Cylinders (dia x stroke) (in / mm)17" x 24" / 432x61017" x 24" / 432x61017" x 24" / 432x61018" x 24" / 457x61017" x 24" / 432x610
Tractive Effort (lbs / kg)13,569 / 6154.8013,569 / 6154.8012,166 / 5518.4115,845 / 7187.1813,569 / 6154.80
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.16 4.42 4.72 4.02 4.46
Heating Ability
Firebox Area (sq ft / m2)124.50 / 11.57127.30 / 11.83131 / 12.17130 / 12.08115 / 10.69
Grate Area (sq ft / m2)17.24 / 1.6017.24 / 1.6017.18 / 1.6018.68 / 1.7416.59 / 1.54
Evaporative Heating Surface (sq ft / m2)1461 / 135.781586 / 147.401600 / 148.641600 / 148.701346 / 125.09
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1461 / 135.781586 / 147.401600 / 148.641600 / 148.701346 / 125.09
Evaporative Heating Surface/Cylinder Volume231.72251.55253.77226.35213.48
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation25002500223332692406
Same as above plus superheater percentage25002500223332692406
Same as above but substitute firebox area for grate area18,05318,45917,03022,75016,675
Power L150315367488267774639
Power MT393.31394.41374.69468.73338.09

Specifications by Steve Llanso of Sweat House Media
ClassC-4 / C-5sW D Washburn/C
Locobase ID8767 8766
RailroadMinneapolis, Sault Ste Marie & Atlantic (Soo)Minneapolis & Pacific (Soo)
CountryUSAUSA
Whyte4-4-04-4-0
Number in Class216
Road Numbers5-7, 14-16/300-305
GaugeStdStd
Number Built216
BuilderSooBurnham, Parry, Williams & Co
Year19191886
Valve GearStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 8.50 / 2.598 / 2.44
Engine Wheelbase (ft / m)23.25 / 7.0921.75 / 6.63
Ratio of driving wheelbase to overall engine wheebase 0.37 0.37
Overall Wheelbase (engine & tender) (ft / m)48.60 / 14.8144.92 / 13.69
Axle Loading (Maximum Weight per Axle) (lbs / kg)36,800 / 16,692
Weight on Drivers (lbs / kg)68,200 / 30,93549,050 / 22,249
Engine Weight (lbs / kg)104,200 / 47,26475,450 / 34,224
Tender Loaded Weight (lbs / kg)96,200 / 43,63652,100 / 23,632
Total Engine and Tender Weight (lbs / kg)200,400 / 90,900127,550 / 57,856
Tender Water Capacity (gals / ML)4500 / 17.053000 / 11.36
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)8 / 7.305 / 4.50
Minimum weight of rail (calculated) (lb/yd / kg/m)57 / 28.5041 / 20.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)63 / 160063 / 1600
Boiler Pressure (psi / kPa)150 / 10.30145 / 10
High Pressure Cylinders (dia x stroke) (in / mm)17" x 24" / 432x61016" x 24" / 406x610
Tractive Effort (lbs / kg)14,037 / 6367.0812,020 / 5452.19
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.86 4.08
Heating Ability
Firebox Area (sq ft / m2)100 / 9.29109 / 10.13
Grate Area (sq ft / m2)15.80 / 1.4715.51 / 1.44
Evaporative Heating Surface (sq ft / m2)917 / 85.221002 / 93.12
Superheating Surface (sq ft / m2)203 / 18.87
Combined Heating Surface (sq ft / m2)1120 / 104.091002 / 93.12
Evaporative Heating Surface/Cylinder Volume145.44179.41
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation23702249
Same as above plus superheater percentage27972249
Same as above but substitute firebox area for grate area17,70015,805
Power L181044217
Power MT523.94379.08