Allis Chalmers

Allis Chalmers 18-30

The Allis Chalmers 18-30 was produced from 1918 to 1921 as a standard-tread farm tractor built in West Allis, Wisconsin, USA. Originally named the 15-30, it was renamed 18-30 after the first Nebraska test. It features a 7.6L 4-cylinder gasoline engine with liquid cooling and a 2-speed unsynchronized gear transmission. The tractor delivers a claimed 18 hp at the drawbar and 30 hp at the belt, with tested power outputs slightly higher. It weighs 6150 lbs and rides on steel tires sized 36x6 front and 50x12 rear. The 18-30 has an open operator station and two-wheel drive. It was succeeded by the Allis Chalmers 20-35 model.

Power33 hp[B]

Founded1918 - 1921

Model18-30

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Technical Specifications

Detailed specifications and technical data for Allis Chalmers 18-30

Power

Plows	3
Belt (tested)	33.41 hp (24.9 kW)
Belt (claimed)	30 hp (22.4 kW)
Drawbar (tested)	20.55 hp (15.3 kW)
Drawbar (claimed)	18 hp (13.4 kW)

Tires

Rear tire	50x12 steel
Front tire	36x6 steel

Engine

Type	Allis Chalmers 7.6L 4-cyl gasoline
Cooling	liquid-cooled vertical valve-in-head
Aux. fuel	7.75 gal (29.3 L)
Cylinders	4-cylinder
Fuel tank	25 gal (94.6 L)
Rated RPM	830
Air cleaner	oil bath
Bore/Stroke	4.75x6.50 inches (121 x 165 mm)
Fuel system	Kingston L 1.5" carburetor
Displacement	460.7 ci (7.6 L)
Coolant capacity	40 qts (37.9 L)

Dimensions

Width	66 inches (167 cm)
Height	68 inches (172 cm)
Length	135 inches (342 cm)
Weight	6150 lbs (2789 kg)

Mechanical

Drive	Two-wheel drive
Operator station	Open operator station

Production

Type	Standard-tread tractor
Notes	Originally named the Allis-Chalmers 15-30, the tractor was renamed 18-30 after the first Nebraska test.
Built in	West Allis, Wisconsin, USA
Total built	1160
Original price	$1,785 in 1919
Years produced	1918 - 1921

Belt Pulley