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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: 4-6-4 Type

308-cyclo-pic

Deerfield & Roundabout 4-6-4 Type Locomotive, Class L2, for passenger & freight service.
Patterned after Chesapeake & Ohio, Class L2, circa 1942.
Construction commenced by John Simon. Construction completed by Frank S. Saville, circa 1980. Restoration by Jeffrey G. Hook, 2007-2008.
Image recorded and edited Jeffrey G. Hook, 2008.

Tractive force (85%)............................... 231 lb.
Factor of adhesion................................... 3.37
Cylinders, diameter and stroke....... 2 3/4 in. x 3 1/2 in.
Drivers, diameter................................ 9 3/4 in.
Weight on drivers.................................. 779 lb.
Weight on front truck.............................. 159 lb.
Weight on trailing truck........................... 341 lb.
Total weight of engine........................... 1,279 lb.
Weight of tender................................... 675 lb.
Total weight of engine and tender............... 0.98 tons
Driving wheel base................................ 21.0 in.
Length over draft faces of couplers........... 13 ft. 4 in.

Fuel............................................ Soft coal
Firebox, length and width.............. 20.0 in. x 10.0 in.
Grate area..................................... 1.4 sq. ft.
Diameter of boiler, outside..................... 11 1/2 in.
Steam pressure..................................... 100 lb.
Track gage, minimum on tangent unguarded track... 7 1/2 in.
Outside gage of flanges......................... 7 7/16 in.
Reverser........................... Precision manual screw
Valves............. Outside admission unbalanced "D" slide
Valve & cylinder lubricator................... Hydrostatic
Engine and tender brakes..................... Straight air
Air compressor....................... Twin cylinder duplex

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