Chicago, St. Paul, Minneapolis, & Omaha Ry., Class "J-2" 2-8-2 #426

Photo taken Shell Lake Wis. North crossing, Winter 1950

The J-2 as can be easily recognized by its silhouette was a USRA Heavy Mikado. It is seen here backing downhill, light, towards Spooner, Wis. after giving pusher service to the afternoon, Hudson bound, freight to the top of the Baronett hill.

Series....................................#423-431

Cylinders, Dia. & Stroke=........ 27" x 32" ~ Overall Height =............................. 15'-0"

Valve, (Piston)..............................14" ~ Width over Cylinders =....................10'-3,3/8"

Valve Gear= ........................Walschaert ~ Rigid wheel base = ............................16'-9"

Driving wheel Diameter =...................64" ~ Engine wheel base = ........................36'-1"

Boiler Pressure,.........................200 lb. ~ Eng length over buffer plates=...... .48'-6,7/8"

Grate Area =.........................70.3 sq. ft. ~ Wheel base, Eng/Tend.=...............71'-8,1/2"

Firebox, L. / W. =.......120,1/8" X 84,1/4". ~ Length Eng. & Tender =...............82'-3,3/4"

Length over tube sheets...................19'-0" ~ Wt. on lead truck ......................24,000 lb.

Tubes, Dia. & No.=2,1/4".................247. ~ Wt. on Trailing Truck..................57,000 lb.

Flues, Dia. & No.=5,1/2"...................45. ~ Wt. on Drivers =.......................239,000 lb.

Htg. Surface, Tubes................2751 sq. ft. ~ Wt. of total Engine =..................320,000 lb.

Htg. Surface, flues.................1225 sq. ft. ~ Tender Wt., Loaded.................. 183,800 lb.

Htg. Surface, Firebox =............280 sq. ft. ~ Wt. eng. & Tender=..................503,800 lb.

Htg. Surface, Arch tubes =...........27 sq. ft. ~ Wt. of Engine, light =................281,000 lb.

Evaporative Htg. Surface, total =..4283 sq. ft. ~ Tender Wt., light...................... 68,500 lb.

Superheater surface,(Type "A")... 993 sq. ft. ~ Tender capacity, Water = ...........10,000 gal.

Combined Htg. Surface =........5276 sq. ft. ~ Tender capacity, Coal =..................18 tons.

Boiler Dia. 1st. ring =.............. 86" O.D. ~ Tractive force =.........................62,000 lb.

Height of boiler center = ................8'-11" ~ Factor of Adhesion =.......................... 3.85

Stoker=.........................Modified, type B ~ Wt on Drivers/ engine wt.=............. .74.68%

Air Pump =.. 1, Cr. Cpd. 8,1/2" Westinghouse ~ Ratio, Htg. Sur. to Grate area =.......... 60.924

Minimum Curve = 19 Degrees or 303 ft. radius ~ Ratio TF per lb. boiler Pressure=............315

Built by Alco-Richmond, 1/21, C/N 62609, Deliverd 1/26/21


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