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Massey-Harris 21 Colt

Massey-Harris 21 Colt tractor
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The Massey-Harris 21 Colt was produced from 1952 to 1953 as a row-crop tractor built in Racine, Wisconsin, USA. It was essentially the model 20 updated with new sheet metal. Powered by a Continental 2.0L 4-cylinder gasoline engine, it delivered 21.6 hp at the drawbar and 28.34 hp at the belt. The tractor featured a 4-speed gear transmission with a dry disc clutch, two-wheel drive with bevel gear final drives, and manual steering. It had an open operator station and optional Type I rear hitch. The rear PTO was transmission-driven with a 540 rpm type. Dimensions included an 82.7 inch wheelbase, 123.3 inch length, and 65.8 inch height. Tires were 4x15 front and 10x28 rear for agricultural use, with an optional single 6x12 front tire. The belt pulley measured 9.5 inches in diameter and 6.25 inches in width, running at 1224 RPM with a speed of 3044 ft/min.
Massey-Harris 21 Colttractorspecificationsenginetransmissiondimensionspowerrow-crop tractor
Power31 hp[B]
Founded1952 - 1953
Model21 Colt

Technical Specifications

Detailed specifications and technical data for Massey-Harris 21 Colt

Power

Plows:2 (14-inch)
Belt (claimed):28.34 hp (21.1 kW)
Drawbar (claimed):21.6 hp (16.1 kW)

Tires

Ag rear:10x28
Ag front:4x15
Single front:6x12

Engine

Type:gasoline
Model:Continental F124
Cooling:liquid-cooled
Cylinders:4-cylinder
Rated RPM:1800
Bore/Stroke:3.00x4.375 inches (76 x 111 mm)
Displacement:124 ci (2.0 L)

Mechanical

Drive:Two-wheel drive
Steering:manual
Final drives:bevel gear
Operator station:Open operator station

Production

Type:Row-Crop tractor
Notes:The Massey-Harris 21 Colt was essentially the model 20, updated with new sheet metal.
Built in:Racine, Wisconsin, USA
Years produced:1952 - 1953

Belt Pulley

RPM:1224
Speed:3044 ft/min (927.81 meters/min)
Width:6.25 inches (15 cm)
Diameter:9.5 inches (24 cm)

Transmission

Type:gear
Gears:4 forward and 1 reverse
Clutch:dry disc

Tractor hitch

Rear Type:I (optional)

Serial Numbers

1952:1001
1953:1417
1954:2669

Dimensions & Tires

Height:65.8 inches (167 cm)
Length:123.3 inches (313 cm)
Wheelbase:82.7 inches (210 cm)
Rear tread:52 to 80 inches (132 to 203 cm)
Ground clearance:19.3 inches (49 cm)
Front tread (tricycle):6.7/12.3 inches (17/31 cm)
Front tread (adjustable):52 to 74 inches (132 to 187 cm)

Power Take-off (PTO)

Rear PTO:transmission
Rear PTO Type:540