Akron, Canton, & Youngstown 2-8-2 "Mikado" Locomotives in the USA

The Akron, Canton & Youngstown Railroad was a short line railroad that ran from a small yard in Delphos, OH and terminated at Akron, OH. The ACY bought a total of seven new "Mikado" type locomotives. The Lima Locomotive Works built all of them with the last one, number 406, being the last 2-8-2 built by a U.S. locomotive builder for a U.S. railroad.

All seven of these locomotives had 63" diameter drivers, 26" x 30" cylinders and with a 200 psi boiler pressure they exerted 54,725 pounds of tractive effort and each weighed about 325,000 pounds.

The AC&Y leased a 2-8-2 from the Nickel Plate in December 1944 and returned it in May1945. This was NKP number 602. ACY also bought four second hand 2-8-2s from the Nickel Plate. These four locomotives were former NKP number 607 which was bought in 1945, number 616 and number 601 bought in 1946 and number 604 which was bought in 1947.

There are no surviving ACY 2-8-2 "Mikado" type locomotives.


ClassQty.Road NumbersYear BuiltBuilderFrom Other RRYear. AcquiredNotes
R2400-4011926Lima1926Number 400 scrapped in 1948. Number 401scrapped in 1946.
R-12402-4031928Lima1928Numbers 402 and 403 scrapped in 1955.
R-22404-4051941Lima1941Numbers 404 and 405 scrapped in 1954.
R-214061944Lima1944Number 406 scrapped in 1954.
H-6a1NKP #6021918ALCONKP # 602Dec.1944NKP 602 leased to the ACY in December 1944 and returned to the NKP in May 1945.
H-6a14071918ALCONKP # 607Dec.1945Number 407 bought from the NKP in December 1945. Ex NKP number 607 scrapped in 1948.
H-6c14081921LimaNKP # 616Oct. 1946Number 408 bought from the NKP in October 1946. Ex NKP number 616 scrapped in 1950.
H-6a14091918ALCONKP # 601Nov.1946Number 409 bought from the NKP in November 1946. Ex NKP number 601 scrapped in 1949.
H-6a14101918ALCONKP # 604 Jan. 1947Number 410 bought from the NKP in January 1947. Ex NKP number 604 scrapped in 1949.

Class Details by Steve Llanso of Sweat House Media

Class R/R-1/R-2 (Locobase 1)

Data from tables in 1930 Locomotive Cyclopedia. See also AC&Y 7 - 1942 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. Akron, Canton and Youngstown Railroad Historical Society website at http://www.acyhs.org/ . (Thanks to Chris Hohl for his 2 July 2015 email pointing out the tender booster on 400 and 403 and for his 22 September 2017 email reporting unlikely boiler pressure values for 177 entries. A Locobase macro caused the error .) Lima works numbers were 7134-7135 in September 1926, 7312-7313 in June 1928, and 7818-1819 in February 1941. One more--8798--delivered in October 1944.

Similar to USRA Light Mikado design and virtually identical to C&IM F-4 class (Locobase 8). Firebox heating surface in the R class included 80 sq ft (7.4 sq m) of thermic syphons. The boiler had a feed water heater. R-1 and R-2 are shown in the AC&Y diagrams with two arch tubes and two syphons that measured 80 sq ft and 85 sq ft (7.9 sq m), respectively.

Chris Hohl alerted Locobase to the presence of tender boosters, as noted above. Further research took Locobase to a Classic Trains forum discussion of third-cylinder booster installations.

"ACY" responded on 12 September 2013 at [] (last accessed 20 August 2015) with a succinct summary of the AC&Y's use of tender boosters. After noting that single-axle trailing trucks had to be cast (e.g. Delta) rather than built-up like Cole and Hodges, he wrote: "On the Akron Canton & Youngstown, Mikados 400 and 401 were delivered with Hodges trailing trucks and Franklin tender boosters. After that, no's 402 and 403 were delivered with cast Delta trailing trucks and Franklin tender boosters to match those on the earlier engines, presumably to simplify the road's parts inventory. In any case, the boosters were all removed from the AC&Y engines in the early 1940's."

A look at later diagram books show that the later R-2s never used tender boosters.

"Ohio's Road of Service" built this class over a surprisingly long time. After taking two in 1926, the railroad received two more in 1928 as class R-1; these put 223,300 lb (101,287 kg) on the drivers and had a total engine weight of 313,800 lb (142,387 kg). Thirteen years later Lima delivered two more as Class R-2 (319,800 lb/145,059 kg) with one more coming in 1944.

The first two were scrapped in 1948 & 1946, respectively. The others carried on until the 1950s.

Principal Dimensions by Steve Llanso of Sweat House Media
Locobase ID1
RailroadAkron, Canton, & Youngstown
Number in Class7
Road Numbers400-406
Number Built7
Valve GearBaker
Locomotive Length and Weight
Driver Wheelbase (ft / m)16.75 / 5.11
Engine Wheelbase (ft / m)36.08 / 11
Ratio of driving wheelbase to overall engine wheebase 0.46
Overall Wheelbase (engine & tender) (ft / m)70.87 / 21.60
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)218,000 / 98,883
Engine Weight (lbs / kg)303,500 / 137,665
Tender Loaded Weight (lbs / kg)182,200 / 82,645
Total Engine and Tender Weight (lbs / kg)485,700 / 220,310
Tender Water Capacity (gals / ML)9500 / 35.98
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)12 / 10.90
Minimum weight of rail (calculated) (lb/yd / kg/m)91 / 45.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)63 / 1600
Boiler Pressure (psi / kPa)200 / 13.80
High Pressure Cylinders (dia x stroke) (in / mm)26" x 30" / 660x762
Tractive Effort (lbs / kg)54,724 / 24822.42
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.98
Heating Ability
Firebox Area (sq ft / m2)338.30 / 31.43
Grate Area (sq ft / m2)66.70 / 6.20
Evaporative Heating Surface (sq ft / m2)3502 / 325.46
Superheating Surface (sq ft / m2)940 / 87.36
Combined Heating Surface (sq ft / m2)4442 / 412.82
Evaporative Heating Surface/Cylinder Volume189.96
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation13,340
Same as above plus superheater percentage16,141
Same as above but substitute firebox area for grate area81,869
Power L115,553
Power MT629.15

  • 400 (Lima Locomotive Works Photo. / Ralph Rizzo Collection)
  • 405 (Lima Locomotive Works Photo. / Ralph Rizzo Collection)
All material Copyright © SteamLocomotive.com
Wes Barris