Wabash Northerns

The Wabash Railroad ordered 25 "Northerns" from the Baldwin Locomotive Works and took delivery of eighteen of the 4-8-4s in 1930. The order was completed when another six were received in 1931. These Northerns designated Class O-1 were assigned road numbers 2900 through 2924 and were put to work hauling freight.

Their design included 70" drivers, 27 x 32 cylinders, a 250 psi boiler pressure, a weight of 454,090 lbs and a tractive effort of 70,817 pounds.

The Class O-1 Northerns were scrapped starting in October, 1955 and by February, 1956 all had been retired. None of the Wabash Northerns remain today.

Specifications for Class O-1
Road Numbers:	2900-2919	2920-2924
Wheel Arrangement:	4-8-4	4-8-4
Valve Gear:	Walschaert	Baker
Length:	100' - 0"	100' - 0"
Drivers:	70" dia.	70" dia.
Weight on Drivers:	274,100 lbs	275,390 lbs
Total Locomotive Weight:	454,090 lbs	459,290 lbs
Locomotive & Tender Weight:	761,600 lbs	766,800 lbs
Grate Area:	96.25 sq ft	96.25 sq ft
Cylinders (dia. x stroke):	(2) 27" x 32"	(2) 27" x 32"
Boiler Pressure:	250 psi	250 psi
Tractive Effort:	70,817 lbs	70,817 lbs
Tender Capacity:	15,000 gals. of water and 23 tons of coal.	15,000 gals. of water and 23 tons of coal.

Specifications for Class O-1

Road Numbers:

2900-2919

2920-2924

Wheel Arrangement:

4-8-4

Valve Gear:

Walschaert

Baker

Length:

100' - 0"

Drivers:

70" dia.

Weight on Drivers:

274,100 lbs

275,390 lbs

Total Locomotive Weight:

454,090 lbs

459,290 lbs

Locomotive & Tender Weight:

761,600 lbs

766,800 lbs

Grate Area:

96.25 sq ft

Cylinders (dia. x stroke):

(2) 27" x 32"

Boiler Pressure:

250 psi

Tractive Effort:

70,817 lbs

Tender Capacity:

15,000 gals. of water and 23 tons of coal.

Note: Numbers 2910 -2919 were equipped with Timken roller bearings.

Photos

Wabash Reference

Wabash by Donald J. Heimburger (Heimburger House Publishing Co.)

Wabash Railroad Historical Society
813 Ayres St.
Bolingbrook, IL 60440