Alton & Southern 2-8-2 "Mikado" Locomotives in the USA

The Alton & Southern Railroad was owned by ALCOA, which owned a large plant just north of the Southern Railway's Copeman yard in East St. Louis. It was sold to a partnership of the Missouri Pacific & the Chicago North Western in 1968 when ALCOA sold the plant. The A&S is now owned by Southern Pacific Lines.

The Alton & Southern linked St. Louis with East St. Louis, IL and today has connections with the BNSF, Conrail, CSX, Illinois Central, Norfolk Southern, Union Pacific and the Terminal Railroad of St. Louis.

The Alton & Southern bought two new "Mikado" type locomotives in 1927 from the American Locomotive Company. They were given road numbers 10 and 11. These locomotives had 57" diameter drivers, 25" x 30" cylinders, a 190 psi boiler pressure, they exerted 53,125 pounds of tractive effort and each weighed 275,000 pounds. The firebox was 243 square feet, the evaporative heating surface was 3,504 square feet and with the superheater the combined heating surface was 4,406 square feet.

In 1927, another ALCO-built "Mikado" arrived and was given road number 13. This locomotive had 55" diameter drivers, 23" x 30" cylinders, a 190 psi boiler pressure, it exerted 46,600 pounds of tractive effort and weighed 273,500 pounds. The firebox was 243 square feet, the evaporative heating surface was 3,464 square feet and with the superheater the combined heating surface was 4,366 square feet.

The next year one more 2-8-2 arrived from ALCO and was assigned road number 2. This locomotive had 55" diameter drivers, 25" x 30" cylinders, a 190 psi boiler pressure, it exerted 55,057 pounds of tractive effort and weighed 274,500 pounds. The firebox was 291 square feet, the evaporative heating surface was 3,398 square feet and with the superheater the combined heating surface was 4,264 square feet.

In 1936, A&S bought a new "Mikado" from the Baldwin Locomotive Works which was given road number 15. This locomotive had 57" diameter drivers, 25" x 30" cylinders, a 230 psi boiler pressure, it exerted 64,309 pounds of tractive effort and weighed 346,610 pounds. The firebox was 332 square feet, the evaporative heating surface was 4,757 square feet and with the superheater the combined heating surface was 6,181 square feet.

The last new "Mikado" bought by A&S was an ALCO-built locomotive delivered in 1937. This locomotive had 55" diameter drivers, 25" x 30" cylinders, a 190 psi boiler pressure, it exerted 55,057 pounds of tractive effort and weighed 278,500 pounds. The firebox was 296 square feet, the evaporative heating surface was 3,517 square feet and with the superheater the combined heating surface was 4,413 square feet.

The Alton & Southern bought ten second-hand "Mikado" between 1937 and 1942, One came from the CCC&StL in 1937, eight were bought from the Wabash between 1940 and 1942 and the tenth was bought from the DL&W in 1942.

There are no surviving Alton & Southern 2-8-2 "Mikado" type locomotives.


Roster by Richard Duley

Qty.Road NumbersFrom Other RRYear AcquiredYear BuiltBuilderNotes
210-111925ALCO1
1131927ALCO2
121928ALCO3
1151936Baldwin4
1161937ALCO5
117CCC&StL19371915ALCO6
118Wabash19401912ALCO7
119Wabash 19401912Baldwin8
620-25Wabash1941 & 19421912ALCO9
126DL&W19421922ALCO10
Notes:
  1. Numbers 10-11 scrapped by 1950.
  2. Number 13 scrapped by 1950
  3. Number 2 scrapped by 1950.
  4. Number 15 scrapped by 1950.
  5. Number 16 scrapped by 1950.
  6. Number 17 acquired from the CCC&StL in 1937. Ex CCC&StL number 6057 later sold to the Tenn, Central and became TC number 730.
  7. Number 18 acquired from the Wabash in 1940. Ex Wabash number 2448. Scrapped in 1948
  8. Number 19 acquired from the Wabash in 1940. Ex Wabash number 2430. Scrapped by 1950.
  9. Numbers 20, 21, 22 and 23 acquired from the Wabash in 1941. Numbers 24 and 25 acquired from the Wabash in 1942. Ex Wabash numbers 2447, 2403, 2409, 2405, 2410 and 2407 in that order. All scrapped by 1950.
  10. Number 26 acquired from the DL&W. Ex DL&W number 2101 scraped by 1950

Class Details by Steve Llanso of Sweat House Media

Class 10 (Locobase 7335)

Data from Alt&Sou 1937 locomotive diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. Works numbers were 66461 in November 1925 and 66746 in June 1926.

These were a relatively small pair of Mikes for the mid-1920s, although when stacked against all 2-8-2s, they fell into the middle of the pack. 14" (356 mm) piston valves promoted free steaming and 27 sq ft of arch tubes (2.5 sq m) contributed to the direct heating surface.

The 10 would be sold to the Noreste de Mexico as their 102.


Class 13 (Locobase 7336)

Data from Alt&Sou 1937 locomotive diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. Works number was 67210 in January 1927.

Ordered a year after the earlier pair (Locobase 7335), this Mike had fewer small tubes and a slightly smaller heating surface as a result. Like the others, the firebox heating surface included 27 sq ft (2.5 sq m) of arch tubes.


Class 14 (Locobase 8318)

Data from Alt&Sou 1953a locomotive diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. Works number was 67431 in February 1928

This small railroad's stud of Mikados included several variations on a theme. Locobase 7335 describes the first pair and 7336 takes up the third to come on the road. This entry covers the one that came still later. Although the grate area remained the same, the firebox area increased by 48 sq ft (4.45 sq m)--possibly from the addition of a thermic syphon or two. Tube & flue length shrank by 9 inches (229 mm), which reduced superheater area. Additional starting power came from a tender booster.

Betwween February 1928 and the end of 1930, the 14 was sold to the Saint Louis & Ohio River Railroad as their #2.


Class 15 (Locobase 7337)

Data from Alt&Sou 1937 locomotive diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. Works number 61941 in 1936.

Although hundreds of the wheel arrangement had yet to be built at Eddystone, the A & S bought one of the last Mikes to be built for an American railroad. It was a big engine with lots of power. The firebox heating surface included 86 sq ft of thermic syphons.


Class 16 (Locobase 7338)

Data from Alt&Sou 1937 locomotive diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. Works number was 69027 in October 1937.

A year after the A & S bought a large, powerful Mike (Locobase 7337), it went to Alco for a near-sister to the 1920s 2-8-2s it had also procured from Alco.

Specifications by Steve Llanso of Sweat House Media
Class1013141516
Locobase ID7335 7336 8318 7337 7338
RailroadAlton & SouthernAlton & SouthernAlton & SouthernAlton & SouthernAlton & Southern
CountryUSAUSAUSAUSAUSA
Whyte2-8-22-8-22-8-22-8-22-8-2
Number in Class41111
Road Numbers10-111314/21516
GaugeStdStdStdStdStd
Number Built41111
BuilderAlco-SchenectadyAlcoAlco-SchenectadyBaldwinAlco-Schenectady
Year19251927192819361937
Valve GearWalschaertWalschaertWalschaertBakerWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)15 / 4.5715 / 4.5715 / 4.5716.75 / 5.1115 / 4.57
Engine Wheelbase (ft / m)33.46 / 10.2033.46 / 10.2033.42 / 10.1937.75 / 11.5133.46 / 10.20
Ratio of driving wheelbase to overall engine wheebase 0.45 0.45 0.45 0.44 0.45
Overall Wheelbase (engine & tender) (ft / m)67.12 / 20.4667.12 / 20.4666.17 / 20.1778.33 / 23.8767.12 / 20.46
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)220,000 / 99,790218,500 / 99,110220,000 / 99,790254,610 / 115,489218,500 / 99,110
Engine Weight (lbs / kg)275,000 / 124,738273,500 / 124,058274,500 / 124,511346,610 / 157,220278,500 / 126,326
Tender Loaded Weight (lbs / kg)168,000 / 76,204170,700 / 77,428189,000 / 85,729232,785 / 105,590174,100 / 78,971
Total Engine and Tender Weight (lbs / kg)443,000 / 200,942444,200 / 201,486463,500 / 210,240579,395 / 262,810452,600 / 205,297
Tender Water Capacity (gals / ML)8000 / 30.309000 / 34.099000 / 34.0912,000 / 45.459000 / 34.09
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)14 / 12.7014 / 12.7014 / 12.7018 / 16.4014 / 12.70
Minimum weight of rail (calculated) (lb/yd / kg/m)92 / 4691 / 45.5092 / 46106 / 5391 / 45.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)57 / 144855 / 139755 / 139757 / 144855 / 1397
Boiler Pressure (psi / kPa)190 / 13.10190 / 13.10190 / 13.10230 / 15.90190 / 13.10
High Pressure Cylinders (dia x stroke) (in / mm)25" x 30" / 635x76223" x 30" / 584x76225" x 30" / 635x76225" x 30" / 635x76225" x 30" / 635x762
Tractive Effort (lbs / kg)53,125 / 24097.1246,600 / 21137.4355,057 / 24973.4664,309 / 29170.1155,057 / 24973.46
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.14 4.69 4.00 3.96 3.97
Heating Ability
Firebox Area (sq ft / m2)243 / 22.58243 / 22.58291 / 27.04332 / 30.86296 / 27.51
Grate Area (sq ft / m2)66.80 / 6.2166.80 / 6.2166.80 / 6.2180.20 / 7.4566.80 / 6.21
Evaporative Heating Surface (sq ft / m2)3504 / 325.653464 / 321.933398 / 315.804757 / 442.103517 / 326.86
Superheating Surface (sq ft / m2)902 / 83.83902 / 83.83866 / 80.481424 / 132.34896 / 83.27
Combined Heating Surface (sq ft / m2)4406 / 409.484366 / 405.764264 / 396.286181 / 574.444413 / 410.13
Evaporative Heating Surface/Cylinder Volume205.58240.12199.36279.10206.35
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation12,69212,69212,69218,44612,692
Same as above plus superheater percentage15,23015,35715,23022,68915,230
Same as above but substitute firebox area for grate area55,40455,86666,34893,92367,488
Power L113,59515,45012,92324,65613,346
Power MT544.94623.55518.01853.97538.63

Photos