In the 1920s the Pere Marquette came under the control of Cleveland financiers Oris and Mantis Van Sweringen who also controlled the New York, Chicago and St. Louis Railroad, the Erie Railroad and the Chesapeake and Ohio Railroad and planned to merge the four railroads. The ICC did not approve the merger and the Van Sweringen brothers sold their interest in the Pere Marquette to the C&O, with which it formally merged on June 6, 1947.
The Pere Marquette Railway took delivery of its first "Mikado" type locomotives in 1913, with the delivery of ten built by the Baldwin Locomotive Works. They were designated as Class MK and were given road numbers 1001 through 1010. These locomotives had 63" diameter drivers, 27" x 30" cylinders, a 185 psi boiler pressure, they exerted 54,888 pounds of tractive effort and each weighed 325,000 pounds. The firebox was 272 square feet, the evaporative heating surface was 4,103 square feet and with the superheater the combined heating surface was 4,963 square feet.
In 1920, the Pere Marquette received thirty "Mikado-Light" locomotives that the USRA redistributed from the Indiana Harbor Belt, the Wabash Railroad and the New York Central & Hudson River Railroad. Fourteen were built by the Lima Locomotive Works and the other Sixteen were built by the American Locomotive Company. They were designated as Class MK-1 and assigned road numbers 1011 through 1040. These locomotives had 63" diameter drivers, 26" x 30" cylinders, a 200 psi boiler pressure, they exerted 54,725 pounds of tractive effort and each weighed 292,000 pounds. The firebox was 280 square feet, the evaporative heating surface was 3,777 square feet and with the superheater the combined heating surface was 4,659 square feet.
In 1923, ten more "Mikados" were added to the roster. They were built by ALCO and were designated as Class MK-2 and given road numbers 1041 through 1050. These locomotives had 63" diameter drivers, 26" x 30" cylinders, a 200 psi boiler pressure, they exerted 54,725 pounds of tractive effort and each weighed 311,000 pounds. The firebox was 345 square feet, the evaporative heating surface was 3,467 square feet and with the superheater the combined heating surface was 4,459 square feet.
There were five another 2-8-2s on the PM, which it bought from the Erie Railroad in 1929. These locomotives were built in 1913, four by Baldwin and one by ALCO. They were designated as Class MK-6 and assigned road numbers 1095 through 1099
There are no surviving Pere Marquette 2-8-2 "Mikado" type locomotives.
|Class||Qty.||Road Numbers||From Other RR||Year Acquired||Year Built||Builder||Notes|
This decade of 2-8-2s were the first of the PM's Mikados and they exemplify the first-generation of Mikado designs in many respects, including boiler size and pressure settings. But they turned 63" drivers and had large grates. Their firebox heating surface area included 31 sq ft of arch tubes. Steam entered the cylinders through 15" (381 mm) piston valves.
The specifications include the admonition to "Give particular attention to design of frames front of the first drivers ...Frames to be 4 1/2" [114 mm] wide. Be careful to make of ample depth. Frame at front splice to be made amply strong ...Frames are to be substantially braced with vertical and horizontal crossties." The supplemental instruction adds that the railroad had had trouble with frame failures between the cylinders and the first drivers on five Consolidations.
A 13 August 1913 PM order added Baldwin power reverse gear to the specs.
NB: For some reason, 1010 was assigned to the earliest locomotive produced by Baldwin under this order.
Six of the ten MK-1000s were scrapped in January 1946. The 1005 also was retired that month, but wasn't scrapped until July 1948. 1007 went under the torch in April 1947, 1008 followed in April 1948, and 1004 finished off the class in July 1948.
The last of the class was retired in 1948.
Lima and Alco each produced fifteen USRA Light Mikados that were intended for the Indiana Harbor Belt, the Wabash, and the New York Central in 1918-1919. Of these, thirty wound up instead on the PM, fifteen from the IHB and fifteen from the New York Central.
A minor difference between the two batches was the use of Lewis reverse gear on the Limas, Ragonnet on the Alcos. Otherwise, the 30 engines represent orthodox USRA before the various upgrades and alterations were made.
This class served the PM until 1951.
Firebox heating surface included 67 sq ft (6.2 sq m) of thermic syphons and 14 sq ft (1.3 sq m) of arch tubes. The design retained the USRA Light Mikado's power dimensions and its grate, enlarged the firebox and added thermic syphons, rebalanced the tube and flue layout to boost the percentage of superheated area, and added some weight.
The last of them ran until 1952. At least one extant photograph shows a PM Mike pulling a nine-car passenger train.
|Specifications by Steve Llanso of Sweat House Media|
|Class||MK - 1001||MK 1 - 1011||MK 2|
|Railroad||Pere Marquette (PM)||Pere Marquette (PM)||Pere Marquette (PM)|
|Number in Class||10||30||10|
|Locomotive Length and Weight|
|Driver Wheelbase (ft / m)||16.50 / 5.03||16.75 / 5.11||16.70 / 5.09|
|Engine Wheelbase (ft / m)||35.17 / 10.72||36.08 / 11||36.90 / 11.25|
|Ratio of driving wheelbase to overall engine wheebase||0.47||0.46||0.45|
|Overall Wheelbase (engine & tender) (ft / m)||65.08 / 19.84||71.37 / 21.75||71.36 / 21.75|
|Axle Loading (Maximum Weight per Axle) (lbs / kg)|
|Weight on Drivers (lbs / kg)||220,000 / 99,790||220,000 / 99,790||230,500 / 104,553|
|Engine Weight (lbs / kg)||285,000 / 129,274||292,000 / 132,449||311,000 / 141,067|
|Tender Loaded Weight (lbs / kg)||156,000 / 70,760||185,400 / 84,096||188,900 / 85,684|
|Total Engine and Tender Weight (lbs / kg)||441,000 / 200,034||477,400 / 216,545||499,900 / 226,751|
|Tender Water Capacity (gals / ML)||8000 / 30.30||10,000 / 37.88||10,000 / 37.88|
|Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)||14 / 12.70||16 / 14.50||16 / 14.50|
|Minimum weight of rail (calculated) (lb/yd)||92||92||96|
|Geometry Relating to Tractive Effort|
|Driver Diameter (in / mm)||63 / 1600||63 / 1600||63 / 1600|
|Boiler Pressure (psi / kPa)||185 / 12.80||200 / 13.80||200 / 13.80|
|High Pressure Cylinders (dia x stroke) (in / mm)||27" x 30" / 686x762||26" x 30" / 660x762||26" x 30" / 660x762|
|Tractive Effort (lbs / kg)||54,588 / 24760.73||54,724 / 24822.42||54,724 / 24822.42|
|Factor of Adhesion (Weight on Drivers/Tractive Effort)||4.03||4.02||4.21|
|Firebox Area (sq ft / m2)||272.50 / 25.32||280 / 26.02||345 / 32.05|
|Grate Area (sq ft / m2)||70 / 6.50||66.70 / 6.20||66.80 / 6.21|
|Evaporative Heating Surface (sq ft / m2)||4103 / 381.18||3777 / 351.02||3467 / 322.21|
|Superheating Surface (sq ft / m2)||880 / 81.75||882 / 81.97||992 / 92.19|
|Combined Heating Surface (sq ft / m2)||4983 / 462.93||4659 / 432.99||4459 / 414.40|
|Evaporative Heating Surface/Cylinder Volume||206.38||204.88||188.07|
|Computations Relating to Power Output (More Information)|
|Robert LeMassena's Power Computation||12,950||13,340||13,360|
|Same as above plus superheater percentage||15,281||15,875||16,299|
|Same as above but substitute firebox area for grate area||59,487||66,640||84,180|