Chicago, St. Paul, Minneapolis, & Omaha Ry., Class "K-1" 4-6-0 #240

Passenger service on the Ashland-Hudson line of the Omaha was dropped about 1949. After that time a Mixed train, with a combine passenger-baggage car instead of a caboose ran alternatly north one day and south the next. #240 is shown here on the southbound leg at Shell Lake, Wisconsin on a crisp cold winter morning. Today the depot is gone and the rails and ties have been removed with only a slightly raised roadbed paralleling U.S. highway 63. being the only indication that a railroad ever existed at Shell Lake.

The main difference between the later I-1 class and K-1 class was that the K-1 had 2" larger diameter cylinders but that wasn't readily visible. Cosmetically, the easily recognized difference was that the I-1 class had the main steam pipes coming in through the cylinder saddle while the K-1 had the pipes externally mounted between the smoke box side and the valve chamber top. (see#106)

Series.........#107,108,110, 112, 125,183, 184, 201,203, 204, 230-40, 243-46, 249, 261, 262

Cylinders, Dia. & Stroke=.......... 23" x 26" ~ Overall Height =........................... 14'-11,1/2"

Valve, (Piston)..............................12" ~ Width over Cylinders =..........................9'-11"

Valve Gear= ........................Walschaert ~ Rigid wheel base = ............................14'-10"

Driving wheel Diameter =...................63" ~ Engine wheel base = .........................25'-10"

Boiler Pressure,.........................180 lb. ~ Eng length over buffer plates=........ .39'-7,5/8"

Grate Area =...........................46 sq. ft. ~ Wheel base, Eng/Tend.=.....................59'-1"

Firebox, L. / W. =........102,1/8" X 65,1/4". ~ Length Eng. & Tender =................69'-7,1/2"

Length over tube sheets...................15'-6" ~ Wt. on lead truck .......................46,500 lb.

Tubes, Dia. & No.=2".......................189 ~ Wt. on Drivers =.......................139,500 lb.

Flues, Dia. & No.=5,3/8"....................24. ~ Wt. of total Engine =..................186,000 lb.

Htg. Surface, Tubes...............1597.2 sq. ft. ~ Tender Wt., Loaded.................. 156,800 lb.

Htg. Surface, flues..................520.2 sq. ft. ~ Wt. eng. & Tender=...................342,800 lb.

Htg. Surface, Arch tubes =...........24.2 sq. ft. ~ Wt. of Engine, light =................166,300 lb.

Evaporative Htg. Surface, total =.2293.6 sq. ft. ~ Tender Wt., light...................... 64,300 lb.

Superheater surface,(Type "A").... 440.0 sq. ft. ~ Tender capacity, Water = ............7,500 gal.

Combined Htg. Surface =..........2733.6 sq. ft. ~ Tender capacity, Coal =..................15 tons.

Boiler Dia. 1st. ring =.............. 66,3/8" O.D. ~ Tractive force =.........................33,400 lb.

Height of boiler center = ...............9'-1,3/4" ~ Factor of Adhesion =......................... 4.17

Stoker=........................................none ~ Wt on Drivers/ engine wt.=..................75.%

Air Pump =... 1, Cr. Cpd. 8,1/2" Westinghouse ~ Ratio, Htg. Sur. to Grate area =........... 49.86

Minimum Curve =.. 19 Degrees or 303 ft. radius ~ Ratio TF per lb. boiler Pressure=..........185.5

Built by Alco-Brooks, 4/12, C/N 50954, Deliverd 4/11/12