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Milwaukee Road classes L1 and L2

L2-a No. 8200 in a Baldwin works photo

The first Mikados on the Milwaukee Road consisted of 20 saturated class L1 locomotives built by the company's own shops in Milwaukee in 1909. They already had a combustion chamber and drivers with a diameter of 63 inc...

	Milwaukee Road classes L1 and L2 Remove
Variant	L2-b L1 L2 L2-a L2-b
Built	1922-1923
Manufacturers	Baldwin
Wheel arrangement	1D1
Gauge	1435 mm
Length
Service mass	131088 kg
Top speed
Power
Engine

General

Property	Milwaukee Road classes L1 and L2 L2-b L1 L2 L2-a L2-b Remove
Built	1922-1923
Manufacturers	Baldwin
Wheel arrangement	2-8-2 (Mikado)
Gauge	1,435 mm

Dimensions and weights

Property	Milwaukee Road classes L1 and L2 L2-b L1 L2 L2-a L2-b Remove
Wheelbase	10.74 m
Total wheelbase	21.50 m
Service mass	131.1 t
Adhesion mass	99.3 t
Total mass	212.7 t
Rigid wheelbase	5.03 m
Water capacity	37,854 l
Fuel capacity	14.5 t (coal)

Boiler

Property	Milwaukee Road classes L1 and L2 L2-b L1 L2 L2-a L2-b Remove
Grate area	4.534 m²
Firebox surface	28.893 m²
Tube heating surface	245.171 m²
Evaporative heating surface	274.064 m²
Superheater surface	66.89 m²
Total heating surface	341.0 m²

Power plant

Property	Milwaukee Road classes L1 and L2 L2-b L1 L2 L2-a L2-b Remove
Driver diameter	1,600 mm
Boiler pressure	13.8 bar
Expansion type	simple expansion
Cylinders	two, 660 x 762 mm

Power

Property	Milwaukee Road classes L1 and L2 L2-b L1 L2 L2-a L2-b Remove
Power source	steam
Estimated power	1,641 kW (2,231 PS)
Starting effort	243.4 kN

Calculated values

Property	Milwaukee Road classes L1 and L2 L2-b L1 L2 L2-a L2-b Remove
Factor of adhesion	1 : 4.00
Optimal speed	42 km/h
Power-to-weight ratio	12.5 kW/t
Heating Surface Equivalent	552.3 m²
Cylinder volume/HSE	1 : 945.16
Adhesive weight/Total	1 : 1.32
Tractive force/Heating surface	1 : 14.91
Grate area/Heating surface	1 : 75.20
Firebox/Tube surface	1 : 8.49
Total/Superheater	1 : 4.10

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