West Wisconsin / Saint Paul & Sioux City 4-4-0 "American" Type Locomotives

Class C-3 (Locobase 9301)

Data from CStPM&O 4 - 1900 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive collection.

The WW bought these Eight-wheelers (works #2968, 2971-2972, 2834, 2837 in 1872, 3242-

3243, 3398-3399) in the early '70s, only to merge them with its trackage into the Omaha Road in 1880. They were standard-issue, mixed-traffic locomotives.

Class C-4 (Locobase 9302)

Data from CStPM&O 4 - 1900 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive collection.

At the same time Baldwin delivered 63" mixed-traffic Eight-wheelers (Locobase 9301) locomotives to the WW, the builder supplied this quartet of freight engines (works #3142-

3143, 3162, 3166).

Class D-12 (Locobase 9320)

Data from CStPM&O 4 - 1900 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive collection. Produced in September 1880 (works #5272, 5274) and October 1880 (5295, 5297).

Relatively small Eight-wheelers from Baldwin. They had 30+-year careers before being retired in June 1911, September 1909, and December 1914 (2), respectively.

Specifications
Class	C-3	C-4	D-12
Locobase ID	9301	9302	9320
Railroad	West Wisconsin (CStPMO)	West Wisconsin (CStPMO)	Saint Paul & Sioux City (CStPMO)
Whyte	4-4-0	4-4-0	4-4-0
Road Numbers	19-23, 28-31	24-27	37-38, 41-42
Gauge	Std	Std	Std
Builder	M. Baird & Co	Burnham, Parry, Williams & Co	Burnham, Parry, Williams & Co
Year	1872	1873	1880
Valve Gear	Stephenson	Stephenson	Stephenson
	Locomotive Length and Weight
Driver Wheelbase	8'	8'	8.25'
Engine Wheelbase	24.25'	22'	22.42'
Ratio of driving wheelbase to overall engine wheebase	0.33	0.36	0.37
Overall Wheelbase (engine & tender)	46'	43'	43.67'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers	41000 lbs	43000 lbs	46600 lbs
Engine Weight	68000 lbs	70000 lbs	73000 lbs
Tender Light Weight	49700 lbs	47700 lbs	53800 lbs
Total Engine and Tender Weight	117700 lbs	117700 lbs	126800 lbs
Tender Water Capacity	2200 gals	2400 gals	2200 gals
Tender Fuel Capacity (oil/coal)	5 tons	5 tons	6.5 tons
Minimum weight per yard of rail on which locomotive could run	34 lb rail	36 lb rail	39 lb rail
	Geometry Relating to Tractive Effort
Driver Diameter	63"	59"	58"
Boiler Pressure	138 psi	140 psi	140 psi
Cylinders (dia x stroke)	16" x 24"	16" x 24"	17" x 24"
Tractive Effort	11440 lbs	12392 lbs	14231 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort)	3.58	3.47	3.27
	Heating Ability
Firebox Area	104.90 sq. ft	104.90 sq. ft	110.80 sq. ft
Grate Area	15.30 sq. ft	15.30 sq. ft	16.30 sq. ft
Evaporative Heating Surface	890	890	992
Superheating Surface
Combined Heating Surface	890	890	992
Evaporative Heating Surface/Cylinder Volume	159.35	159.35	157.34
	Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation	2111	2142	2282
Same as above plus superheater percentage	2111	2142	2282
Same as above but substitute firebox area for grate area	14476	14686	15512
Power L1	3670	3487	3318
Power MT	394.68	357.56	313.95