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Gray Tractor 18-36

The Gray Tractor 18-36 is a standard-tread tractor built by Gray Tractor in Minneapolis, Minnesota, USA from 1918 to 1921. It features a Waukesha 7.8L 4-cylinder liquid-cooled gasoline engine with a 2-speed gear transmission. The tractor delivers a claimed drawbar power of 18 hp and belt power of 36 hp, with tested drawbar and belt powers slightly higher and lower respectively. It has a 3x1 drum drive with manual steering and an open operator station. Dimensions include a 104.5 inch wheelbase, 174 inch length, 72.25 inch width, and 72 inch height, weighing 6200 lbs. Tires are 40x8 steel front and 54x54 steel rear. The serial number plate is located on the left side of the tractor on top of the transmission case.
Gray Tractor 18-36Gray Tractor18-36 tractorfarm tractorWaukesha engine7.8L engine2-speed gear transmissiontractor specifications1918 tractorstandard-tread tractor
Power36 hp[B]
Founded1918 - 1921
Model18-36

Technical Specifications

Detailed specifications and technical data for Gray Tractor 18-36

Power

Plows:4
Belt (tested):32.20 hp (24.0 kW)
Belt (claimed):36 hp (26.8 kW)
Drawbar (tested):19.64 hp (14.6 kW)
Drawbar (claimed):18 hp (13.4 kW)

Tires

Rear tire:54x54 steel
Front tire:40x8 steel

Engine

Type:gasoline
Model:Waukesha P
Cooling:liquid-cooled inline
Cylinders:4-cylinder
Rated RPM:900
Bore/Stroke:4.75x6.75 inches (121 x 171 mm)
Fuel system:carburetor
Displacement:478 ci (7.8 L)
Starter type:hand-crank

Dimensions

Width:72.25 inches (183 cm)
Height:72 inches (182 cm)
Length:174 inches (441 cm)
Weight:6200 lbs (2812 kg)
Wheelbase:104.5 inches (265 cm)

Mechanical

Drive:3x1 drum drive
Steering:Manual steering
Operator station:Open operator station

Production

Type:Standard-tread tractor
Built in:Minneapolis, Minnesota, USA
Manufacturer:Gray Tractor
Years produced:1918 - 1921

Belt Pulley

Width:8 inches (20 cm)
Diameter:11 inches (27 cm)

Transmission

Type:gear
Gears:2 forward and 1 reverse

Related Models

Gray Tractor 20-36

Model:20-36

Gray Tractor 18-30

Model:18-30