Pere Marquette 2-8-0 "Consolidation" Locomotives of the USA


Class Details by Steve Llanso of Sweat House Media

Class C (Locobase 9285)

Data from PM 3 1929 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata 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 PM finally caught up to the other railroads in terms of the power dimensions and size they adopted for the last Consolidations they bought. In 1910 they took delivery of 15 engines (works #48006-48010 and 49321-49330) and added 10 more in 1911 (50049-50058). Locobase suspects these had piston valves and Walschaert gear from the beginning, but believes the superheaters were added later.

A good, medium-weight freighter, this design served the PM and the C & O until 1951.


Class C-1 (Locobase 9283)

Data from PM 3 1929 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata 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).

Works numbers ran 28397-28401, 28404-405, 28676, and 28758-28762 when Alco delivered this class in 1903. Although similar to the big-grate C-2s delivered at around the same time, these had cylinders measuring 1" greater in diameter (but still the relatively short stroke) and a bigger boiler. Consequently, when they were superheated, the shops were able to pack more tubes and flues into the barrel. Sporting a useful adhesion weight as well, these 2-8-0s operated until the end of World War II.


Class C2 (Locobase 4130)

Builder info from B.Rumary, 25 Kingscombe, Gurney Slade, Radstock, BA3 4TH, ENGLAND and Jeremy Lambert as supplied by Allen Stanley in March 2004.

According to Rumary-Lambert, works #3767-3772, produced in November 1901 became road #345-350. But that's way out of sequence with the rest of Brooks production. Locobase guesses the actual production date was February 1901.

#3844, manufactured in May 1901 was delivered as 344. 4028-4035 (November 1901) were numbered 330-337 and 4092-4097, from December 1901, had road #338-343

This is one of series of Consolidations operated by the Pere Marquette. This class was fitted with what was described by Railway Age as "Belpaire wagon top" boilers.

This particular group, including the 6 superheated in the 1920s (see Locobase 9282) left the road relatively early in 1935


Class C2 (Locobase 9279)

Data from PM 3 1929 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata 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).

Works numbers ran 25270, 25303-25304, 25326, 25354-25355, 25366, 25387-25388, 25410 in March 1905 and 25447-25449, 25487, 25530 in April.

Similar in size to the Alco Consolidations delivered to the PM in the same year, these Baldwins had slightly smaller fireboxes with more arch tube area (22 sq ft) contributing to the direct heating surface.

Modifications were limited and included boring out the cylinders to 20". The class was not superheated for some reason and were scrapped in the mid-1930s.


Class C2 (Locobase 11461)

Data from "Locomotive Building," The Railroad Gazette, Vol XXXVIII, No 1 (6 January 1905), p 5. Works numbers were 38673-38692 in 1905.

These Consolidations were virtually identical to the Baldwins shown in Locobase 9279, although they had a few more boiler tubes.

Their later superheated configuration appears in Locobase 9278.

NB: Evaporative heating surface area estimate derived by adding reported direct heating surface to calculated tube heating surface.


Class C2 - superheated - 273 (Locobase 9278)

Data from PM 3 1929 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata 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).

In 1905, Alco delivered 20 locomotives in a single batch (works #30673-30692) as saturated-boiler engines. Some time later, the railroad superheated the entire class to a moderate degree, which likely added years to this class's utility. In addition to superheaters, they were equipped with "universal piston" valves, that is, piston valves fitted in the slide-valve casting.

(Locobase suspects that 290 -- the lone holdout described in the 1929 book as having 290 2" tubes -- was later modified as well.)

The last of the group was retired in 1948.


Class C2 - superheated - 298 (Locobase 9280)

Data from PM 3 1929 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata 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).

According to the diagrams, Alco delivered these 15 locomotives in a single batch (works #30631-30646) as saturated-boiler engines in 1905, just before the locomotives shown in Locobase 9278.

Some time later, the railroad superheated the entire class to the same specifications as the C2s shown in Locobase 9278. The big difference was 2 1/2 ton higher weights of adhesion and of the engine overall.

The last of the group was retired in 1948.


Class C2 - superheated - 330 (Locobase 9282)

Data from PM 3 1929 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata 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).

Locobase 4130 describes this class as saturated-boiler locomotives delivered by Brooks in 1901. Two more classes built to the same large-grate design would follow in 1903 and 1904. All were superheated in the 1920s to the same dimensions and fitted with piston valves. But for some reason, most of the 1901 class was not modified and the ones that were lasted only a few years.


Class C2 - superheated - 501 (Locobase 9284)

Data from PM 3 1929 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata 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).

This 1910 class (Alco-Brooks works #47052-47063) fit the pattern of the 1905 small-grate 2-8-0s (see Locobases 9278 & 9280) and were superheated in the same way (although the heating surface area was smaller because they had two fewer tubes). Like most of the other superheated 2-8-0s, this class operated into the late 1940s.


Class C2 - superheated - big grate (Locobase 9281)

Data from PM 3 1929 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata 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).

Alco delivered these 16 locomotives in two batches (works #27645-27650 in 1903 and 28788-28796, 28402 in 1904) as saturated-boiler engines. Compared to the classes Alco would supply to the PM in 1905, this set had much larger grates, but shorter-stroke pistons.

Some time later, the railroad superheated the entire class to a moderate degree, which likely added years to this class's utility. In addition to superheaters, they were equipped with "universal piston" valves, that is, piston valves fitted in the slide-valve casting. The 1903 engines were lighter by about 1 1/2 tons.

Like the other superheated PM Consolidations, these operated into the 1940s, the last being retired in 1944.


Class SC (Locobase 9290)

Data from PM 3 1929 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata 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).

Immediately following the C class (Locobase 9285) were these larger Consolidations from Alco (works #50059-50083). Cylinder volume grew compared to the Cs, and the heat-supply systems were scaled up accordingly. The grate was slightly larger, but the firebox heating surface was considerably greater, aided by 30 sq ft of arch tubes, and the boiler now had more tubes and flues of larger diameter.

As might be imagined, this latest, largest, and most powerful class of 2-8-0s remained in service up to the last moment of steam in 1951.

Specifications by Steve Llanso of Sweat House Media
ClassCC-1C2C2C2
Locobase ID9285 9283 4130 9279 11461
RailroadPere Marquette (PM)Pere Marquette (PM)Pere Marquette (PM)Pere Marquette (PM)Pere Marquette (PM)
CountryUSAUSAUSAUSAUSA
Whyte2-8-02-8-02-8-02-8-02-8-0
Number in Class2515201517
Road Numbers601-625351-365330-350283-297366-382
GaugeStdStdStdStdStd
Number Built2515201517
BuilderAlco-RichmondPMBrooksBurnham, Williams & CoAlco-Brooks
Year19101920190119051905
Valve GearWalschaertStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase16.67'15.75'15.50'16'
Engine Wheelbase25.58'24.50'24.33'24.25'
Ratio of driving wheelbase to overall engine wheebase 0.65 0.64 0.64 0.66
Overall Wheelbase (engine & tender)59.15'56.41'52.10'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers193500 lbs162000 lbs148000 lbs152000 lbs151000 lbs
Engine Weight217500 lbs181500 lbs163000 lbs172000 lbs171000 lbs
Tender Light Weight144000 lbs126500 lbs92000 lbs109500 lbs
Total Engine and Tender Weight361500 lbs308000 lbs255000 lbs281500 lbs
Tender Water Capacity7000 gals6000 gals4500 gals5000 gals5000 gals
Tender Fuel Capacity (oil/coal)14 tons14 tons10 tons12 tons12 tons
Minimum weight of rail (calculated)81 lb/yard68 lb/yard62 lb/yard63 lb/yard63 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter61"57"56"57"57"
Boiler Pressure200 psi200 psi200 psi200 psi200 psi
Cylinders (dia x stroke)22" x 30"21" x 26"20" x 26"19.5" x 28"19.5" x 28"
Tractive Effort40466 lbs34197 lbs31571 lbs31754 lbs31754 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.78 4.74 4.69 4.79 4.76
Heating Ability
Firebox Area171 sq. ft212 sq. ft225.50 sq. ft177 sq. ft190 sq. ft
Grate Area55 sq. ft54.40 sq. ft55 sq. ft45.20 sq. ft44.40 sq. ft
Evaporative Heating Surface2216 sq. ft2176 sq. ft2471 sq. ft2367 sq. ft2418 sq. ft
Superheating Surface497 sq. ft446 sq. ft
Combined Heating Surface2713 sq. ft2622 sq. ft2471 sq. ft2367 sq. ft2418 sq. ft
Evaporative Heating Surface/Cylinder Volume167.89208.77261.37244.57249.83
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation11000108801100090408880
Same as above plus superheater percentage12980127301100090408880
Same as above but substitute firebox area for grate area4035649608451003540038000
Power L11162213216710563846612
Power MT529.66719.41423.35370.38386.14

Specifications by Steve Llanso of Sweat House Media
ClassC2 - superheated - 273C2 - superheated - 298C2 - superheated - 330C2 - superheated - 501C2 - superheated - big grate
Locobase ID9278 9280 9282 9284 9281
RailroadPere Marquette (PM)Pere Marquette (PM)Pere Marquette (PM)Pere Marquette (PM)Pere Marquette (PM)
CountryUSAUSAUSAUSAUSA
Whyte2-8-02-8-02-8-02-8-02-8-0
Number in Class191561216
Road Numbers273-282, 366-375298-313330-350501-512314-350
GaugeStdStdStdStdStd
Number Built1216
BuilderPMPMPMPMPM
Year19201920192019201920
Valve GearStephensonStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase16'16'15.50'16'15.50'
Engine Wheelbase24.25'24.25'24.33'24.25'24.33'
Ratio of driving wheelbase to overall engine wheebase 0.66 0.66 0.64 0.66 0.64
Overall Wheelbase (engine & tender)52.06'52.06'52.78'54.15'53.23'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers154500 lbs159000 lbs148000 lbs155500 lbs153000 lbs
Engine Weight174500 lbs179000 lbs163000 lbs175000 lbs168800 lbs
Tender Light Weight110000 lbs109500 lbs103500 lbs123000 lbs113960 lbs
Total Engine and Tender Weight284500 lbs288500 lbs266500 lbs298000 lbs282760 lbs
Tender Water Capacity5000 gals5000 gals5500 gals6000 gals5500 gals
Tender Fuel Capacity (oil/coal)12 tons12 tons15 tons12 tons15 tons
Minimum weight of rail (calculated)64 lb/yard66 lb/yard62 lb/yard65 lb/yard64 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter57"57"57"57"57"
Boiler Pressure200 psi200 psi195 psi200 psi200 psi
Cylinders (dia x stroke)20" x 28"20" x 28"20" x 26"20" x 28"20" x 26"
Tractive Effort33404 lbs33404 lbs30242 lbs33404 lbs31018 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.63 4.76 4.89 4.66 4.93
Heating Ability
Firebox Area190 sq. ft190 sq. ft206 sq. ft182 sq. ft209 sq. ft
Grate Area44.40 sq. ft44.40 sq. ft54.40 sq. ft44.40 sq. ft54.40 sq. ft
Evaporative Heating Surface1905 sq. ft1905 sq. ft1918 sq. ft1897 sq. ft1918 sq. ft
Superheating Surface393 sq. ft393 sq. ft393 sq. ft393 sq. ft393 sq. ft
Combined Heating Surface2298 sq. ft2298 sq. ft2311 sq. ft2290 sq. ft2311 sq. ft
Evaporative Heating Surface/Cylinder Volume187.11187.11202.88186.33202.88
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation8880888010608888010880
Same as above plus superheater percentage1039010390124111039012730
Same as above but substitute firebox area for grate area4446044460469994258848906
Power L11192911929127071183913063
Power MT680.88661.61757.14671.40752.91

Specifications by Steve Llanso of Sweat House Media
ClassSC
Locobase ID9290
RailroadPere Marquette (PM)
CountryUSA
Whyte2-8-0
Number in Class25
Road Numbers901-925
GaugeStd
Number Built25
BuilderAlco-Brooks
Year1911
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase17.50'
Engine Wheelbase26.42'
Ratio of driving wheelbase to overall engine wheebase 0.66
Overall Wheelbase (engine & tender)60.56'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers210500 lbs
Engine Weight236500 lbs
Tender Light Weight156000 lbs
Total Engine and Tender Weight392500 lbs
Tender Water Capacity8000 gals
Tender Fuel Capacity (oil/coal)14 tons
Minimum weight of rail (calculated)88 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter57"
Boiler Pressure180 psi
Cylinders (dia x stroke)25" x 30"
Tractive Effort50329 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.18
Heating Ability
Firebox Area215 sq. ft
Grate Area56.50 sq. ft
Evaporative Heating Surface2877 sq. ft
Superheating Surface550 sq. ft
Combined Heating Surface3427 sq. ft
Evaporative Heating Surface/Cylinder Volume168.80
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation10170
Same as above plus superheater percentage11797
Same as above but substitute firebox area for grate area44892
Power L18931
Power MT374.15

Reference


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