Milwaukee Road class L2

Milwaukee Road class L2
Cleaning an engine near the Milwaukee Road roundhouse, Bensenville, Illinois. Milwaukee Road 470 was class L2-b 2-8-2 built by Baldwin in 1923
Power type	Steam
Builder	Milwaukee Road (40) American Locomotive Company (140) Baldwin Locomotive Works (200)
Build date	L2: 1912–1914; L2-a: 1920; L2-b: 1922–1923
Total produced	380
Configuration	2-8-2
UIC classification	1′D1′ h2
Gauge	4 ft 8 1⁄2 in (1,435 mm)
Driver diameter	63 in (1,600 mm)
Weight on drivers	216,000–220,000 lb (98–100 tonnes)
Locomotive weight	275,000–292,770 lb (125–132.80 tonnes)
Fuel type	Coal
Boiler pressure	200 lbf/in² (1.38 MPa)
Firegrate area	49 sq ft (4.6 m2)
Heating surface: Total	2,925–3,050 sq ft (271.7–283 m2)
Superheater area	640–685 sq ft (59–63.6 m2)
Cylinders	Two
Cylinder size	26 × 30 in (660 × 762 mm)
Valve gear	L2, L2-b: Walschaerts; L2-a: Baker
Tractive effort	54,720 lbf (243.4 kN)
Locomotive brakes	Air
Train brakes	Air
Career	Milwaukee Road
Class	L2, L2-a, and L2-b
Number in class	L2: 180, L2-a: 100, L2-b: 100
Number	8000–8179, 8200–8399; renumbered 400–738 in 1938
Retired	1935–1956
Disposition	All scrapped

The Milwaukee Road class L2 were 2-8-2 or ‘Mikado’ type steam locomotives build by or for the Chicago, Milwaukee, St. Paul and Pacific Railroad (“The Milwaukee Road”) in the period 1912–1923.

Construction history

There were three sub-classes of the class L2: the L2 proper comprised 40 locomotives, built by Milwaukee Road’s Milwaukee Shops in 1912–13, 115 by Alco’s Brooks Works in 1912, and 25 by Alco’s Schenectady Works in 1914. They were followed by 100 class L2-a built by Baldwin Locomotive Works in 1920, and 100 class L2-b in 1922, also built by Baldwin.

Numbering

L2

When originally built, the Milwaukee Shops locomotives had been allocated 1800–1839, however only the first seven carried these numbered before the allocation became 8000–8039. Similarly, the only the first 50 Brooks locomotives received their 1840–1889 numbers, before their allocation was changed to 8040–8154. The Schenectady engines were numbered 8155–8179.

Sixty-nine L2 locomotives received mechanical stokers and were reclassified as class L2-r. At the Milwaukee Road’s 1938 renumbering, the remaining 62 L2-r locomotives were renumbered 600–661, with the remaining 77 non-stoker fitted L2 locomotives receiving numbers 662–738.

L2-a

The 100 L2-a locomotives were built by the Baldwin locomotive Works as 8200–8299, and became 500–599 in 1938.

L2-b

The 100 L2-a locomotives were built by the Baldwin locomotive Works as 8300–8399, and became 400–499 in 1938.

Notes

References

• Edson, William D. (Spring 1977). "Milwaukee Road All Time Steam, Diesel and Electric Roster". Railroad History (Boston, Massachusetts: Railway and Locomotive Historical Society Inc.) (136): pp.93–100. 
• Smith, J. D. H. "Milwaukee Road steam locomotives". http://orion.math.iastate.edu/jdhsmith/term/slusmilw.htm. Retrieved 2008-10-06.