Massey-Harris

Massey-Harris GP 15/22

The Massey-Harris GP 15/22 was produced from 1930 to 1936 as a four-wheel drive (4WD) general purpose tractor. It was the first Massey-Harris designed tractor, built in Racine, Wisconsin, USA, with a total of 3,000 units produced. Powered by a Hercules 3.7L 4-cylinder gasoline engine, it featured a 3-speed gear transmission and 4x4 drive. The tractor had an open operator station and was capable of pulling 2 14-inch plows. It weighed 3,900 lbs and had steel 38x8 tires front and rear. The GP 15/22 was notable for its belt pulley and was priced originally at $1,000.

Power-

Founded-

ModelGP 15/22

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Technical Specifications

Detailed specifications and technical data for Massey-Harris GP 15/22

Power

Plows	2 (14-inch)
Belt (tested)	24.84 hp (18.5 kW)
Belt (claimed)	22 hp (16.4 kW)
Drawbar (tested)	19.91 hp (14.8 kW)
Drawbar (claimed)	15 hp (11.2 kW)

Tires

Rear tire	38x8 steel
Front tire	38x8 steel

Engine

Type	Hercules 3.7L 4-cyl gasoline
Details	Hercules OOC gasoline 4-cylinder liquid-cooled vertical L-head; Displacement 226 ci (3.7 L); Bore/Stroke 4.00x4.50 inches (102 x 114 mm); Air cleaner oil bath; Rated RPM 1200; Coolant capacity 16 qts (15.1 L). The overhead-valve (OHV) Hercules engine replaced the flathead OOC in 1936, the final year of the GP production.
Aux. fuel	1.6 gal (6.1 L)
Fuel tank	14 gal (53.0 L)

Dimensions

Height	55 inches (139 cm)
Length	119 inches (302 cm)
Weight	3,900 lbs (1769 kg)
Rear tread	40 to inches (101 to 0 cm), 60 to inches (152 to 0 cm), 66 to inches (167 to 0 cm), 76 to inches (193 to 0 cm)
Front tread	40 to inches (101 to 0 cm), 60 to inches (152 to 0 cm), 66 to inches (167 to 0 cm), 76 to inches (193 to 0 cm)
Ground clearance	30 inches (76 cm)

Mechanical

Drive	4x4 4WD
Operator station	Open operator station

Production

Built in	Racine, Wisconsin, USA
Description	The Massey-Harris 15/22 GP General Purpose tractor was the first Massey-Harris designed tractor.
Total built	3,000
Manufacturer	Massey-Harris
Original price	$1,000
Years produced	1930 - 1936

Belt Pulley