Wisconsin Central / Minneapolis, St Paul & Sault Ste Marie / Minneapolis, Sault Ste Marie & Atlantic 4-4-0 "American" Type Locomotives

Class C (Locobase 8766)

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

Of the six class Cs that were originally bought in 1886

Class C-21 (Locobase 8768)

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

This was the first group of several classes of Eight-wheelers that came from Schenectady to the Soo system. They were produced in a single batch and had works #2022-2035.

Class C-22 (Locobase 8769)

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

Continuing the line of Eight-wheelers begun by the C-21 class (Locobase 8768), Schenectady added a foot to the boiler tubes. The design -- Schenectady works #2189-2199 -- 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 collection.

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.

Class C-24 (Locobase 8771)

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

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 collection.

This class came from Baldwin as C-4 and C-5 Eight-wheelers in 1886-1887. 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 collection.

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.

Specifications
Class	C	C-21	C-22	C-23	C-24	C-4 / C-5	C-4 / C-5s
Locobase ID	8766	8768	8769	8770	8771	8763	8767
Railroad	Minneapolis, St Paul & Sault Ste Marie (Soo)	Wisconsin Central (Soo)	Wisconsin Central (Soo)	Wisconsin Central (Soo)	Minneapolis, St Paul & Sault Ste Marie (Soo)	Minneapolis, Sault Ste Marie & Atlantic (Soo)	Minneapolis, Sault Ste Marie & Atlantic (Soo)
Whyte	4-4-0	4-4-0	4-4-0	4-4-0	4-4-0	4-4-0	4-4-0
Road Numbers	300-305	2002-2015	2017-2027	2028-2039	2040
Gauge	Std	Std	Std	Std	Std	Std	Std
Builder	Burnham, Parry, Williams & Co	Schenectady	Schenectady	Burnham, Parry, Williams & Co	Brooks	Burnham, Parry, Williams & Co	Soo
Year	1886	1885	1886	1887	1890	1886	1919
Valve Gear	Stephenson	Stephenson	Stephenson	Stephenson	Stephenson	Stephenson	Stephenson
	Locomotive Length and Weight
Driver Wheelbase	8'	8.50'	8.50'	8.50'	9'	8.50'	8.50'
Engine Wheelbase	21.75'	23.25'	23.25'	23.25'	26.04'	23.25'	23.25'
Ratio of driving wheelbase to overall engine wheebase	0.37	0.37	0.37	0.37	0.35	0.37	0.37
Overall Wheelbase (engine & tender)	44.92'	44.17'	45.17'	45.17'	47.96'	46.50'	48.60'
Axle Loading (Maximum Weight per Axle)							36800 lbs
Weight on Drivers	49050 lbs	56400 lbs	60000 lbs	57450 lbs	63750 lbs	60500 lbs	68200 lbs
Engine Weight	75450 lbs	89000 lbs	92600 lbs	92000 lbs	106000 lbs	94200 lbs	104200 lbs
Tender Light Weight	52100 lbs	68100 lbs	68100 lbs	69950 lbs	82900 lbs	75160 lbs	96200 lbs
Total Engine and Tender Weight	127550 lbs	157100 lbs	160700 lbs	161950 lbs	188900 lbs	169360 lbs	200400 lbs
Tender Water Capacity	3000 gals	3500 gals	3500 gals	3600 gals	3700 gals	3500 gals	4500 gals
Tender Fuel Capacity (oil/coal)	5 tons	7 tons	7 tons	7 tons	7.5 tons	8 tons	8 tons
Minimum weight per yard of rail on which locomotive could run	41 lb rail	47 lb rail	50 lb rail	48 lb rail	53 lb rail	50 lb rail	57 lb rail
	Geometry Relating to Tractive Effort
Driver Diameter	63"	63"	63"	63"	73"	63"	63"
Boiler Pressure	145 psi	145 psi	145 psi	145 psi	175 psi	145 psi	150 psi
Cylinders (dia x stroke)	16" x 24"	17" x 24"	17" x 24"	17" x 24"	18" x 24"	17" x 24"	17" x 24"
Tractive Effort	12020 lbs	13569 lbs	13569 lbs	13569 lbs	15845 lbs	13569 lbs	14037 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort)	4.08	4.16	4.42	4.23	4.02	4.46	4.86
	Heating Ability
Firebox Area	109 sq. ft	124.50 sq. ft	127.30 sq. ft	126.70 sq. ft	130 sq. ft	115 sq. ft	100 sq. ft
Grate Area	15.51 sq. ft	17.24 sq. ft	17.24 sq. ft	17.18 sq. ft	18.68 sq. ft	16.59 sq. ft	15.80 sq. ft
Evaporative Heating Surface	1002	1461	1586	1585	1600	1346	917
Superheating Surface							203
Combined Heating Surface	1002	1461	1586	1585	1600	1346	1120
Evaporative Heating Surface/Cylinder Volume	179.41	231.72	251.55	251.39	226.35	213.48	145.44
	Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation	2249	2500	2500	2491	3269	2406	2370
Same as above plus superheater percentage	2249	2500	2500	2491	3269	2406	2844
Same as above but substitute firebox area for grate area	15805	18053	18459	18372	22750	16675	18000
Power L1	4217	5031	5367	5357	6777	4639	8104
Power MT	379.08	393.31	394.41	411.15	468.73	338.09	523.94