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Deerfield and Roundabout Railway
An educational demonstration steam powered 7 and 1/2 inch gauge 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.
Buker Locomotive Works, Chicago, Builders No. 4, 1973.
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.

Rated tractive force (K=0.85)...................... 377 lb.
Weight on drivers divided by rated tractive force.... 3.35
Cylinders, diameter and stroke........... 3 in. x 4 1/4 in.
Drivers, diameter................................ 8 5/8 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 3/8 in.
Length over draft faces of couplers...... 11 ft. 10 3/8 in.

Fuel............................................ Soft coal
Firebox, length and width.......... 16 1/2 in. x 11 3/4 in.
Grate area.................................... 1.35 sq. ft.
Diameter of boiler, outside......................... 12 in.
Steam pressure..................................... 100 lb.
Track gauge, minimum on tangent unguarded track.. 7 1/2 in.
Outside gauge of flanges........................ 7 7/16 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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