Massey-Harris

Massey-Harris Challenger

The Massey-Harris Challenger was produced from 1936 to 1939 as a row-crop tractor built in Racine, Wisconsin, USA. It was the row-crop version of the Pacemaker and replaced the Wallis 12/20 in Massey's line. Featuring the Twin Power option to increase engine RPMs for additional horsepower during belt work, it was powered by a 4.1L 4-cylinder gasoline engine with a 4-speed gear transmission. The tractor had a wheelbase of 78 inches, weighed 3900 lbs, and featured two-wheel drive with manual steering and an open operator station.

Power35 hp[B]

Founded1936 - 1939

ModelChallenger

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Technical Specifications

Detailed specifications and technical data for Massey-Harris Challenger

Power

Belt (tested)	34.9 hp (26.0 kW)
Belt (claimed)	32 hp (23.9 kW)
Drawbar (tested)	29.8 hp (22.2 kW)
Drawbar (claimed)	20 hp (14.9 kW)

Tires

Ag rear	52x8.00 (steel), 11.25x36
Ag front	24x4.50 (steel), 5.50x16

Engine

Type	Massey-Harris 4.1L 4-cyl gasoline
Aux. fuel	1.6 gal (6.1 L)
Fuel tank	18 gal (68.1 L)
Rated RPM	1200, 1400 (Twin Power option)
Bore/Stroke	3.875x5.25 inches (98 x 133 mm)
Description	Liquid-cooled vertical I-head
Displacement	247.7 ci (4.1 L)
Coolant capacity	20 qts (18.9 L)

Dimensions

Height	58 inches (147 cm)
Length	129.3 inches (328 cm)
Weight	3900 lbs (1769 kg)
Wheelbase	78 inches (198 cm)

Mechanical

Drive	Two-wheel drive
Steering	manual
Operator station	Open operator station

Production

Type	Row-Crop tractor
Notes	The Massey-Harris Challenger was the row-crop version of the Pacemaker. These tractors replaced the Wallis 12/20 in Massey's line. The Twin Power feature increased engine rpms to provide additional horsepower for belt work.
Built in	Racine, Wisconsin, USA
Total built	14,000
Manufacturer	Massey-Harris
Years produced	1936 - 1939

Transmission