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Deerfield and Roundabout Railway
An educational demonstration live steam model railway operated by the
Lake Forest Live Steamers Railway Museum Incorporated.

STEAM LOCOMOTIVES: 2-8-4 Type
drry 284 cyclo

Deerfield & Roundabout 2-8-4 Type Locomotive, Class S1, for freight service.
Patterned after New York, Chicago & St. Louis, Class S1, circa 1942.
Pride of the D&R.
Construction commenced 1967 and completed 1973 by Edward "Bud" Buker.
Image recorded and edited by Brennan M. Caughron, 2006.

Tractive force (85%)............................... 399 lb.
Factor of adhesion................................... 3.17
Cylinders, diameter and stroke............. 3 in. x 4.5 in.
Drivers, diameter................................ 8.625 in.
Weight on drivers................................ 1,263 lb.
Weight on front truck.............................. 158 lb.
Weight on trailing truck........................... 261 lb.
Total weight of engine........................... 1,682 lb.
Weight of tender................................... 720 lb.
Total weight of engine and tender................ 1.2 tons
Driving wheel base.............................. 30.375 in.

Length over draft faces of couplers...... 11 ft. 10.375 in.
Fuel............................................ Soft coal
Firebox, length and width............. 16.5 in. x 11.75 in.
Grate area.................................... 1.35 sq. ft.
Diameter of boiler, outside......................... 12 in.
Steam pressure..................................... 100 lb.
Track gage......................................... 7.5 in.
Reverser...................... Manual latch lever quadrant
Valves............................ Inside admission piston
Valve & cylinder lubricator.................... Mechanical
Engine and tender brakes............ Vacuum, steam ejector

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