Motor—L-head type —eight cylinders, cam en bloc, detachable head, bore 3-3/8″, stroke 4-1/4″, S A E rating-36.45 hp, Piston displacement 322 cubic inches.
Valves—Special heat-resisting alloy.
Pistons—Light weight aluminum alloy.
Connecting rods—Drop-forged steel, specially heat-treated.
Crankshaft—Drop-forged, heat-treated steel crank-shaft, supported by five large bearings.
Camshaft drive—By link-belt chain. Automatic Idler adjustment.
Motor oiling system—Force feed pressure system by gear pump.
Motor cooling system—Coaling is by centrifugal pump; large fin and tube type radiator with 6 gallon capacity.
Electric system—Six volt system; 115 ampere hour battery; separate unit starter and generator.
Ignition system—Coil and distributor.
Wiring—Fuses provided for all circuits, with two spare fuses In clips, fuse box conveniently located under hood.
Clutch—Multiple disc, dry plate dutch.
Transmission—Four speeds forward, one reverse; unit with power plant
Steering—Cam and lever type of steering gear, especially designed for balloon tyres. 18″ steering wheel, with steering post fastened to adjustable bracket so that drivers of different stature can operate the car in comfort.
Front axle—Special design, large I-beam section of carefully heat-treated alloy steel.
Rear axle—Seml-floating type oof heat-treated alloy steel, spiral bevel ring and pinion gears, roller bearings throughout.
Special wire wheels.
Brakes––4-wheel hydraulic brakes operated by foot pedal. 16″ brake drums. Emergency hand brake operating on propellor shaft directly in rear of transmission.
Springs—Made of special chrome vanadium steel. Front springs 2″ wide, 40″ long; rear springs 2-1/2″ wide, 60″ long. Hung on special rubber impregnated fabric shackles. These spring shackles never rattle, nor squeak, and require no lubrication.
Frame—Pressed steel channel 7″ deep; 5 rigid cross members give frame torsional stiffness and Insure freedom from body weave.
Gasoline supply—Fuel pump. 45-gallon tank with 2-gallon reserve supply located at rear of frame.
Equipment—Shock absorbers, 2 extra wheels, tires and tubes; heavy type front and rear bumpers, both having specially designed frame attachments; full tool equipment; electric vibrator horn, automatic windshield wiper; cigar lighter, full set of Instruments, including 8-day clock, mounted on instrument board, rear view mirror. Tachometer.
Bodies—Hand made aluminum body shell; finest grade upholstering materials and hardware; hand buffed leathers, duco finish.
Prices on application
DU PONT MOTORS, INC., Wilmington, Delaware – Dec 14, 1928
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