Chicago, St. Paul, Minneapolis, & Omaha Ry., Class "M-3" 0-6-0 #85

photo taken Shell Lake, Wis, Circa 1944.

#85 is cooling its heels (Journals actually) on the team track at Shell Lake, Wisconsin with a brand new paint job after being out shopped at the Omaha shops near the Mississippi river at St. Paul, Minn. Short legged switchers do not travel well at road speeds and #85 had to be stopped and checked frequently on its trip to Spooner where it was to replace #46 so it could be shopped. A discerning eye will pick out the fact that the M-3 is a USRA design..

Series...........................#75-86.

Cylinders, Dia. & Stroke=........... 21" X 28" ~ Rigid wheel base = ........................ 11'-0"

Driving wheel Diameter =.....................51" ~ Driving wheel base = ....................... 11'-0"

Valve Piston,...................................12" ~ Engine wheel base = ........................11'-0"

Valve gear, = .......... Baker, Triangular frame. ~ Wheel base, Eng/Tend.=............. . 49'-9,1/2"

Boiler Pressure,............................190 lb. ~ Overall length, eng./tend......... = 66'-8,3/4".

Grate Area =.......................... 33.0 sq. ft. ~ Overall Height .........................14'-0,1/2" .

Firebox, L. & W. =..........72,1/8" X 66,1/4". ~ Width over cylinders = ..................9'-11,1/4"

Boiler Dia. first ring = ................66" O.D.". ~ Wt. on Drivers =........................163,500 lb

Height to boiler center = ....................8'-6" ~ Wt. of total Engine =..................163,500 lb.

Tubes, No. & Dia. =......2"=158,..5,1/2" = 24 ~ Tractive force =..........................39,100 lb.

Length over tube sheets= .................15'-0". ~ Minimum curve =.... 35 degrees. or 153' radius.

Evaporative Htg. Surface =.......1892.4 sq. ft. ~ Tender wt., loaded =....................152,800 lb

Htg. Surface, tubes =....1252.5 + 514.9 sq. ft. ~ Tender capacity, Water = ............8,000 gal.

Htg. Surface, firebox =............130.00 sq. ft. ~ Tender capacity, Coal =....................8 tons.

Htg. Surface, Arch tubes =.........15.00 sq. ft. ~ Journals, Driver =................. 9" X 12" long

Superheater surface,..................475 sq. ft. ~ Journals, tender =................. 6" x 11" long

Ratio, Htg. Surface to Grate area=...... 57.34 ~ Air pump = 8,1/2" cross compound Westinghouse

Ratio Htg. Surface to cyl. volume =.... 168.6 ~ Factor of Adhesion =........................ 4.18

Ratio T.F. to boiler Pressure =......... 205.79 ~ Wt on Drivers/ engine wt.=................ 100%

Built by Alco/Richmond, C/N 62617, 2/21. Delivered 2/21/21.


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