CMO #393

Chicago, St. Paul, Minneapolis, & Omaha Ry., Class "J" 2-8-2 #392
photo taken, St. Paul, Minn, Omaha Shops, 2/22/52, 2:50 P.M.
The 32 Omaha J's were basicly identical to the North-Western J's. About the only way one could tell the difference was by the number, (3 digit for the Omaha and 4 digit for the North-Western) and the fact that the Omaha cab windows did not have a horizontal cross bar. Like the North-Western J's and unlike the Omaha J-A's which were actually rebuilt from the J's, they had quill spoked drivers instead of Boxpoke and did not have an exhaust steam injector. Mechanical lubricators were common to all of Omaha's 2-8-2's
Series...........................originaly 390-421
Cylinders, Dia. & Stroke=........ 27" x 32" ~ Overall Height =............................. 15'-3,13/16"
Valve, (Piston)..............................14" ~ Width over Cylinders =....................10'-4"
Valve Gear= .................Baker, Long frame ~ Rigid wheel base = ............................17'-6"
Driving wheel Diameter =...................62" ~ Engine wheel base = ........................36'-5"
Boiler Pressure,.........................185 lb. ~ Eng length over buffer plates=...... .49'-4,1/8"
Grate Area =.........................63 sq. ft. ~ Wheel base, Eng/Tend.=...............69'-1"
Firebox, L. / W. =.......116,1/8" X 78,1/4". ~ Length Eng. & Tender =...............79'8,1/2"
Length over tube sheets...................21'-0" ~ Wt. on lead truck ......................28,000 lb.
Tubes, Dia. & No.=2"......................259 ~ Wt. on Trailing Truck..................47,000 lb.
Flues, Dia. & No.=5,3/8"...................36. ~ Wt. on Drivers =.......................229,500 lb.
Htg. Surface, Tubes................2835.3 sq. ft. ~ Wt. of total Engine =..................304,500 lb.
Htg. Surface, flues.................1059.0 sq. ft. ~ Tender Wt., Loaded.................. 175,400 lb.
Htg. Surface, Firebox =............230 sq. ft. ~ Wt. eng. & Tender=..................479,900 lb.
Htg. Surface, Arch tubes =...........29.6 sq. ft. ~ Wt. of Engine, light =................270,100 lb.
Evaporative Htg. Surface, total =..4153.9 sq. ft. ~ Tender Wt., light...................... 72,000 lb.
Superheater surface,(Type "A")... 1112.4 sq. ft. ~ Tender capacity, Water = ...........8,275 gal.
Combined Htg. Surface =........5043.9 sq. ft. ~ Tender capacity, Coal =..................16 tons.
Boiler Dia. 1st. ring =.............. 81,1/2" O.D. ~ Tractive force =.........................60,100 lb.
Height of boiler center = ................10'-0,1/2" ~ Factor of Adhesion =.......................... 3.81
Stoker=.........................Standard, type BK ~ Wt on Drivers/ engine wt.=............. 75.36%
Air Pump =.. 1, Cr. Cpd. 8,1/2" Westinghouse ~ Ratio, Htg. Sur. to Grate area =.......... 65.93
Minimum Curve = 16 Degrees or 359 ft. radius ~ Ratio TF per lb. boiler Pressure=............324.86
Built by Alco-Schenectady, 6/13 C/N 52699
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Chicago, St. Paul, Minneapolis, & Omaha Ry., Class "J" 2-8-2 #392

photo taken, St. Paul, Minn, Omaha Shops, 2/22/52, 2:50 P.M.

Series...........................originaly 390-421

Cylinders, Dia. & Stroke=........ 27" x 32" ~ Overall Height =............................. 15'-3,13/16"

Valve, (Piston)..............................14" ~ Width over Cylinders =....................10'-4"

Valve Gear= .................Baker, Long frame ~ Rigid wheel base = ............................17'-6"

Driving wheel Diameter =...................62" ~ Engine wheel base = ........................36'-5"

Boiler Pressure,.........................185 lb. ~ Eng length over buffer plates=...... .49'-4,1/8"

Grate Area =.........................63 sq. ft. ~ Wheel base, Eng/Tend.=...............69'-1"

Firebox, L. / W. =.......116,1/8" X 78,1/4". ~ Length Eng. & Tender =...............79'8,1/2"

Length over tube sheets...................21'-0" ~ Wt. on lead truck ......................28,000 lb.

Tubes, Dia. & No.=2"......................259 ~ Wt. on Trailing Truck..................47,000 lb.

Flues, Dia. & No.=5,3/8"...................36. ~ Wt. on Drivers =.......................229,500 lb.

Htg. Surface, Tubes................2835.3 sq. ft. ~ Wt. of total Engine =..................304,500 lb.

Htg. Surface, flues.................1059.0 sq. ft. ~ Tender Wt., Loaded.................. 175,400 lb.

Htg. Surface, Firebox =............230 sq. ft. ~ Wt. eng. & Tender=..................479,900 lb.

Htg. Surface, Arch tubes =...........29.6 sq. ft. ~ Wt. of Engine, light =................270,100 lb.

Evaporative Htg. Surface, total =..4153.9 sq. ft. ~ Tender Wt., light...................... 72,000 lb.

Superheater surface,(Type "A")... 1112.4 sq. ft. ~ Tender capacity, Water = ...........8,275 gal.

Combined Htg. Surface =........5043.9 sq. ft. ~ Tender capacity, Coal =..................16 tons.

Boiler Dia. 1st. ring =.............. 81,1/2" O.D. ~ Tractive force =.........................60,100 lb.

Height of boiler center = ................10'-0,1/2" ~ Factor of Adhesion =.......................... 3.81

Stoker=.........................Standard, type BK ~ Wt on Drivers/ engine wt.=............. 75.36%

Air Pump =.. 1, Cr. Cpd. 8,1/2" Westinghouse ~ Ratio, Htg. Sur. to Grate area =.......... 65.93

Minimum Curve = 16 Degrees or 359 ft. radius ~ Ratio TF per lb. boiler Pressure=............324.86

Built by Alco-Schenectady, 6/13 C/N 52699 Next List Front Page

Built by Alco-Schenectady, 6/13 C/N 52699
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