Iowa Central / Minneapolis & St Paul / Minneapolis & St Louis 2-6-0 "Mogul" Type Locomotives

Class F1-27/FI-28 (Locobase 5091)

Originally built for the Iowa CentraI with IC numbers 81-95, 96-102, 5, 300-305. This set of Moguls had almost the same size boiler and cylinders as the Consolidations bought by the IC at around the same time. The grate was smaller however as was the firebox heating surface (which included 18 sq ft of arch tubes). It was the classic M & SL Mogul and was supplied by Schenectady in 1899 (81-95), 1902, & 1906 (96-102). The only difference was the boiler pressure, which was set at 190 psi in the first batch, 200 psi in the later engines.

Data shown on locomotive diagram at http://www.eldora.net/lyndon/locos/classf1small..jpg, (August 2002)

Class F2-22 (Locobase 9014)

Data from M&StL 1934 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive collection. Works numbers 2234-2235.

By the time the 2 Moguls shown here were profiled in the 1934 book, they had been relegated to switcher service.

Class F2-33 (Locobase 4200)

Profiled in the Railroad Age Gazette of 2 October 1908, this Mogul was one of the heaviest and most powerful of its day. RAG notes that "As usual for locomotives of this type [i.e., 2-6-0s], the first pair of driving wheels is equalized with the leading truck, while the loads on the main and rear driving axles are separately equalized."

When this class went into service, IC rails were under lease to the Minneapolis and St Louis. The M & St L bought the IC outright in 1912, at which point these engines became the F2-33 class and renumbered 329-334. Retirements began almost 25 years later (1936) with the last of the class leaving service in 1948.

Class F3-33 (Locobase 9015)

Data from M&StL 1934 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive collection. Works numbers 32944-32945.

These were intended for switching duties from the start and used slide valves and Stephenson gear for simplicity. Their fireboxes had 12 sq ft of arch tubes as part of the firebox heating surface.

The pair was scrapped in July 1939 and March 1943, respectively.

Class F4-33 (Locobase 9016)

Data from M&StL 1934 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive collection. Works numbers 35769-35770.

Low-drivered Moguls with 14" piston valves and 12 sq ft of arch tubes. 65 was scrapped in November 1941 and 66 followed in March 1943.

Class F5-32 (Locobase 9017)

Data from M&StL 1934 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive collection. Works numbers 33460-33462

These were intended for switching duties from the start and used slide valves and Stephenson gear for simplicity. Their fireboxes had 20 sq ft of arch tubes as part of the firebox heating surface.

65 & 66 were scrapped in December 1940. 67 lasted until March 1943.

Specifications
Class	F1-27/FI-28	F2-22	F2-33	F3-33	F4-33	F5-32
Locobase ID	5091	9014	4200	9015	9016	9017
Railroad	Minneapolis & St Louis (MSL)	Iowa Central (MSL)	Iowa Central (MSL)	Iowa Central (MSL)	Minneapolis & St Louis (MSL)	Minneapolis & St Paul (MSL)
Whyte	2-6-0	2-6-0	2-6-0	2-6-0	2-6-0	2-6-0
Road Numbers	300-308	66-67 / 391-392	200-205 / 329-334	9-10 / 397-398	301-302 / 397-398 / 65-66	300-302 / 67-69
Gauge	Std	Std	Std	Std	Std	Std
Builder	Alco-Schenectady	Cooke	Burnham, Williams & Co	Burnham, Williams & Co	Baldwin	Burnham, Williams & Co
Year	1899	1893	1908	1908	1910	1909
Valve Gear	Stephenson	Stephenson	Walschaert	Stephenson	Stephenson	Stephenson
	Locomotive Length and Weight
Driver Wheelbase	14.50'	13'	14.50'	13.33'	13.33'	13.33'
Engine Wheelbase	22.59'	20.58'	23'	19.33'	19.75'	19.33'
Ratio of driving wheelbase to overall engine wheebase	0.64	0.63	0.63	0.69	0.67	0.69
Overall Wheelbase (engine & tender)	59.13'	46.62'	50'	49.44'	59.25'	50.35'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers	118000 lbs	94200 lbs	128900 lbs	138150 lbs	142000 lbs	138000 lbs
Engine Weight	142200 lbs	110200 lbs	155200 lbs	156350 lbs	162000 lbs	157000 lbs
Tender Light Weight	98000 lbs	72500 lbs	99500 lbs	87300 lbs	115600 lbs	100000 lbs
Total Engine and Tender Weight	240200 lbs	182700 lbs	254700 lbs	243650 lbs	277600 lbs	257000 lbs
Tender Water Capacity	5600 gals	3500 gals	5500 gals	3500 gals	5500 gals	5000 gals
Tender Fuel Capacity (oil/coal)	10 tons	6 tons	9 tons	6 tons	10 tons	8 tons
Minimum weight per yard of rail on which locomotive could run	65.56 lb rail	52.33 lb rail	71.61 lb rail	76.75 lb rail	78.89 lb rail	76.67 lb rail
	Geometry Relating to Tractive Effort
Driver Diameter	63"	51"	57"	51"	51"	51"
Boiler Pressure	190 psi	160 psi	200 psi	175 psi	190 psi	175 psi
Cylinders (dia x stroke)	20" x 26"	19" x 24"	20" x 28"	20" x 26"	20" x 26"	20.5" x 26"
Tractive Effort	26660 lbs	23104 lbs	33404 lbs	30333 lbs	32933 lbs	31869 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort)	4.43	4.08	3.86	4.55	4.31	4.33
	Heating Ability
Firebox Area	178 sq. ft	176 sq. ft	153 sq. ft	190 sq. ft	190 sq. ft	192 sq. ft
Grate Area	27 sq. ft	23 sq. ft	40 sq. ft	24.70 sq. ft	30.20 sq. ft	24.70 sq. ft
Evaporative Heating Surface	2189	1329	2179	1839	1950	1966
Superheating Surface
Combined Heating Surface	2189	1329	2179	1839	1950	1966
Evaporative Heating Surface/Cylinder Volume	231.55	168.74	214.02	194.52	206.26	197.94
	Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation	5130	3680	8000	4322.50	5738	4322.50
Same as above plus superheater percentage	5130	3680	8000	4322.50	5738	4322.50
Same as above but substitute firebox area for grate area	33820	28160	30600	33250	36100	33600
Power L1	6497.45	3814.52	5494.11	4388.30	4954.06	4382.02
Power MT	364.18	267.82	281.90	210.09	230.74	210.01