Flint & Pere Marquette / Pere Marquette 2-6-0 "Mogul" Type Locomotives

Class M (Locobase 4132)

Data from PM 3 1929 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive collection. Roster information developed by Art Million and Tom Dixon and presented on the Pere Marquette Historical Society website (http://www.pmhistsoc.org/stmrostr.shtml, accessed 1 March 2008). Builder info from B.Rumary, 25 Kingscombe, Gurney Slade, Radstock, BA3 4TH, ENGLAND and Jeremy Lambert as supplied by Allen Stanley in March 2004.

Works numbers were 3759-3762 in February 1901.

This was the first set of Moguls supplied to the PM after its formation in 1900. The class had Belpaire fireboxes and "improved" piston valves.

Two -- 215 and 218 -- were scrapped in 1930; the other two were retired and scrapped in 1934.

Class M (Locobase 9273)

Data from PM 3 1929 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive collection. Roster information developed by Art Million and Tom Dixon and presented on the Pere Marquette Historical Society website (http://www.pmhistsoc.org/stmrostr.shtml, accessed 1 March 2008).

When the PM went back to Brooks for more Moguls, it bought a batch (works #28773-28787) that were slightly larger overall, but particularly endowed with a larger bigger firebox. The direct heating surface was augmented by 15 sq ft represented in 2 arch tubes. These were later superheated; see Locobase 9265.

Class M - superheated (Locobase 9265)

Data from PM 3 1929 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive collection. Roster information developed by Art Million and Tom Dixon and presented on the Pere Marquette Historical Society website (http://www.pmhistsoc.org/stmrostr.shtml, accessed 1 March 2008). The diagrams show that the class arrived in two batches: works #25514-25523 arrived in 1902, 27642-27645 in 1903.

Alco delivered 15 of these powerful little Moguls in 1901 (Locobase 9273), but later superheated them. In the process, the shops retained the big firebox with 15 sq ft of arch tubes, and added a relatively small amount of superheater area. Still, the class proved long-lived with the last one leaving service in 1944.

Class M 1 (Locobase 9275)

Data from PM 3 1929 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive collection. Roster information developed by Art Million and Tom Dixon and presented on the Pere Marquette Historical Society website (http://www.pmhistsoc.org/stmrostr.shtml, accessed 1 March 2008). Builder info from B.Rumary, 25 Kingscombe, Gurney Slade, Radstock, BA3 4TH, ENGLAND and Jeremy Lambert as supplied by Allen Stanley in March 2004.

Works #3090-3094 in December 1898.

The cylinder dimensions of this quintet of Moguls were more usually found on a Consolidation. Because the class was the only group of 2-6-0s with such long-stroke cylinders, it's likely that the Marquette's constituents found them somehow unsatisfactory. On the other hand, these Dunkirk-built locomotives lasted until 1937.

Class M 3 (Locobase 9277)

Data from PM 3 1929 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive collection. Roster information developed by Art Million and Tom Dixon and presented on the Pere Marquette Historical Society website (http://www.pmhistsoc.org/stmrostr.shtml, accessed 1 March 2008). Builder info from B.Rumary, 25 Kingscombe, Gurney Slade, Radstock, BA3 4TH, ENGLAND and Jeremy Lambert as supplied by Allen Stanley in March 2004.

Works #1271-1272 (September 1887), 1463-1468 (November 1888), 1556-1560 (August 1889), and 1768-1769 (November 1890).

This F & PM class of Moguls represented a consistent purchase of motive power over a 3-year period. Their modest dimensions and power output suggest a similar level of traffic over a railway that spanned Michigan from the Lake Erie port of Monroe in the Southeast to Ludington on Lake Michigan in the Northwest and to Port Huron and Bay City in the state's "thumb". Later the F & PM extended south to Toledo, Ohio.

Class M M (Locobase 9274)

Data from PM 3 1929 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive collection. Roster information developed by Art Million and Tom Dixon and presented on the Pere Marquette Historical Society website (http://www.pmhistsoc.org/stmrostr.shtml, accessed 1 March 2008).

Cooke delivered these large, heavy Moguls (works #28583-28585) in 1903. They operated for three decades, were never superheated, and were retired in 1934.

Class M3 (Locobase 9276)

Data from PM 3 1929 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive collection. Roster information developed by Art Million and Tom Dixon and presented on the Pere Marquette Historical Society website (http://www.pmhistsoc.org/stmrostr.shtml, accessed 1 March 2008).

These small Moguls entered service well before the PM rebuilt them in 1900. The basic dimensions were petite to begin with and about the only change seems to have been a new boiler of the same size as the old one. The overhaul yielded another quarter-century of service with the later of the two being scrapped in 1926.

Specifications
ClassMMM - superheatedM 1M 3M MM3
Locobase ID4132927392659275927792749276
RailroadPere Marquette (PM)Pere Marquette (PM)Pere Marquette (PM)Flint & Pere Marquette (PM)Flint & Pere Marquette (PM)Pere Marquette (PM)Pere Marquette (PM)
Whyte2-6-02-6-02-6-02-6-02-6-02-6-02-6-0
Road Numbers215-218200-214201, 202, 211-213101-105 / 210-14 / 224-27230-244219-221228-229
GaugeStdStdStdStdStdStdStd
BuilderBrooksAlco-BrooksPMBrooksBrooksAlco-CookePM
Year1901190419201898188819031900
Valve GearStephensonStephensonStephensonStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase15'15'15'15'15.50'14.17'15.50'
Engine Wheelbase23.92'23.92'23.92'23.42'23.08'23.33'23.08'
Ratio of driving wheelbase to overall engine wheebase 0.63 0.63 0.63 0.64 0.67 0.61 0.67
Overall Wheelbase (engine & tender)50.54'50.40'50.36'51.50'44.71'52.71'44.71'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers122000 lbs124000 lbs124000 lbs126200 lbs86650 lbs143000 lbs88300 lbs
Engine Weight138500 lbs145500 lbs145500 lbs144200 lbs101550 lbs166000 lbs105300 lbs
Tender Light Weight94000 lbs96040 lbs96040 lbs93600 lbs65500 lbs130000 lbs77400 lbs
Total Engine and Tender Weight232500 lbs241540 lbs241540 lbs237800 lbs167050 lbs296000 lbs182700 lbs
Tender Water Capacity5000 gals5000 gals5000 gals4500 gals3000 gals7000 gals3900 gals
Tender Fuel Capacity (oil/coal)12 tons12 tons12 tons12 tons8 tons10 tons9 tons
Minimum weight per yard of rail on which locomotive could run68 lb rail68.89 lb rail68.89 lb rail70.11 lb rail48.14 lb rail79.44 lb rail49.06 lb rail
Geometry Relating to Tractive Effort
Driver Diameter57"57"57"57"57"63"57"
Boiler Pressure200 psi200 psi200 psi180 psi150 psi200 psi150 psi
Cylinders (dia x stroke)19" x 26"19" x 26"20" x 26"18" x 30"18" x 24"20" x 26"18" x 24"
Tractive Effort27993 lbs27993 lbs31018 lbs26091 lbs17394 lbs28063 lbs17394 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.36 4.43 4.00 4.84 4.98 5.10 5.08
Heating Ability
Firebox Area191 sq. ft199 sq. ft199 sq. ft198 sq. ft126 sq. ft177 sq. ft126 sq. ft
Grate Area30.70 sq. ft30.70 sq. ft30.70 sq. ft30.70 sq. ft16.50 sq. ft30.70 sq. ft16.50 sq. ft
Evaporative Heating Surface1931192315511925125823801199
Superheating Surface215
Combined Heating Surface1931192317661925125823801199
Evaporative Heating Surface/Cylinder Volume226.32225.38164.06217.87177.97251.75169.62
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation6140614061405526247561402475
Same as above plus superheater percentage614061406887.515526247561402475
Same as above but substitute firebox area for grate area382003980044645.4135640189003540018900
Power L164276498.049005.735641.473806.147252.593687.20
Power MT348.42346.59480.34295.66290.52335.44276.18

Credits

Introduction and specifications provided by Steve Llanso of Sweat House Media.

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