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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
326-BMC-cyclo

Deerfield & Roundabout 4-6-4 Type Locomotive, Class J1a, for passenger service.
Patterned after New York Central, Class J1a, circa 1927.
Old Reliable.
Construction completed 1960 by Edward "Bud" Buker.
Restoration by Karl J. Kobel, Gordon S. Carlson and Jeffrey G. Hook, 2008.
Image recorded and edited by Brennan M. Caughron, 2008.

Tractive force (85%)............................... 228 lb.
Factor of adhesion................................... 4.08
Cylinders, diameter and stroke.......... 2.75 in. x 3.5 in.
Drivers, diameter................................ 9.875 in.
Weight on drivers.................................. 930 lb.
Weight on front truck............................... 92 lb.
Weight on trailing truck........................... 214 lb.
Total weight of engine........................... 1,236 lb.
Weight of tender................................... 575 lb.
Total weight of engine and tender............... 0.91 tons
Driving wheel base................................ 21.0 in.
Length over draft faces of couplers......... 9 ft. 6.25 in.

Fuel............................................ Soft coal
Firebox, length and width................. 16 in. x 9.5 in.
Grate area.................................... 1.06 sq. ft.
Diameter of boiler, outside......................... 10 in.
Steam pressure..................................... 100 lb.
Track gage......................................... 7.5 in.
Reverser...................... Manual latch lever quadrant
Valves............................ Inside admission piston
Valve & cylinder lubricator.................... Mechanical
Engine brakes....................................... Steam
Tender brakes...................................... Manual

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