Massey-Harris 21 Colt
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.
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 |
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