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Shevlin-Hixon Co. Baldwin 2-8-2

United States 1916 5 produced
No. 5 in April 1948 at Chemult, Oregon Martin E. Hansen collection

In 1916, the Shevlin-Hixon Lumber Co. built one of the world's largest sawmills in Bend, Oregon. It was connected to a standard gauge rail network with 60 pounds per yard rails, five percent grades and 25-degree curves, what corresponds to a radius of 70 meters. The most significant part of their locomotive roster were five Mikados built by Baldwin between 1916 and 1924. All burned oil for better fire protection while working in the forest.

The first one was No. 2 with drivers of 44 inches and cylinders of 18 by 24 inches. No. 4, built three years later, had a boiler that was around 50 percent larger. Also the drivers were larger at 48 inches, while the cylinders measured 20.5 by 28 inches. Numbers 5 and 6, built in 1922, had basically the same smaller dimensions as No. 2, but were superheated. No. 8, the last one, again had basically the same larger dimensions as No. 4, but was also superheated. 

Also the first two were fitted with superheaters and piston valves in the thirties. At the same time, Shevlin-Hixon obtained trackage rights for 60 miles of the Great Northern main line. Now the tenders were enlarged of replaced by bigger ones to provide sufficient range. After the company had been bought by Brooks-Scanlon in 1950, the sawmill was closed and all locomotives scrapped.

Technical data

General

Property 2 4 5, 6 8
Built 1916 1919 1922 1924
Manufacturers Baldwin
Wheel arrangement 2-8-2 (Mikado)
Gauge 1,435 mm (Standard gauge)

Dimensions and weights

Property 2 4 5, 6 8
Wheelbase 8.31 m 8.23 m 8.26 m
Total wheelbase 15.23 m 16.64 m 15.55 m 16.62 m
Service mass 63 t 79.6 t 64.9 t 82.1 t
Adhesion mass 50.3 t 61.9 t 52.6 t 64.9 t
Total mass 94.8 t 115.9 t 105.9 t 118.4 t
Rigid wheelbase 3.68 m 3.99 m 3.66 m 3.99 m
Water capacity 13,249 l 15,142 l
Fuel capacity 0.7 t (oil) 0.9 t (oil)

Boiler

Property 2 4 5, 6 8
Grate area 2.369 m² 3.837 m² 2.369 m² 3.837 m²
Firebox surface 13.006 m² 13.843 m² 13.099 m² 14.307 m²
Tube heating surface 182.833 m² 279.453 m² 133.316 m² 215.721 m²
Evaporative heating surface 195.84 m² 293.295 m² 146.415 m² 230.028 m²
Total heating surface 195.8 m² 293.3 m² 176.9 m² 281.4 m²
Superheater surface 30.472 m² 51.375 m²

Power plant

Property 2 4 5, 6 8
Driver diameter 1,118 mm 1,219 mm 1,118 mm 1,219 mm
Boiler pressure 12.4 bar 11.7 bar 12.8 bar 11.7 bar
Expansion type simple expansion
Cylinders two, 457 x 610 mm two, 521 x 711 mm two, 457 x 610 mm two, 521 x 711 mm

Power

Property 2 4 5, 6 8
Power source steam
Estimated power 708 kW (963 PS) 969 kW (1,317 PS) 783 kW (1,065 PS) 1,081 kW (1,470 PS)
Starting effort 120.3 kN 157.6 kN 123.6 kN 157.6 kN

Calculated values

Property 2 4 5, 6 8
Factor of adhesion 1 : 4.11 1 : 3.85 1 : 4.18 1 : 4.04
Optimal speed 35 km/h 37 km/h 39 km/h 42 km/h
Power-to-weight ratio 11.2 kW/t 12.2 kW/t 12.1 kW/t 13.2 kW/t
Heating Surface Equivalent 260.9 m² 362.5 m² 272.9 m² 404.3 m²
Cylinder volume/HSE 1 : 767.28 1 : 835.54 1 : 733.58 1 : 749.15
Adhesive weight/Total 1 : 1.25 1 : 1.29 1 : 1.23 1 : 1.27
Tractive force/Heating surface 1 : 12.83 1 : 11.22 1 : 14.60 1 : 11.69
Grate area/Heating surface 1 : 82.67 1 : 76.44 1 : 74.67 1 : 73.34
Firebox/Tube surface 1 : 14.06 1 : 20.19 1 : 10.18 1 : 15.08
Total/Superheater 1 : 4.80 1 : 4.48
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