| Manufacturer |
Massey-Harris |
| Price |
- |
| Model |
21 Colt |
| Equipment Type |
Row-Crop Tractors |
| Factory |
Racine, Wisconsin, USA |
MASSEY-HARRIS 21 COLT POWER
| Drawbar (claimed) |
21.6 hp/16.1 kW |
| Belt (claimed) |
28.34 hp/21.1 kW |
| Plows |
2 (14-inch) |
ENGINE DETAIL
The Massey-Harris 21 Colt features a Continental F124 gasoline engine with a 124 cubic inch displacement, offering a balance of power and efficiency at a rated RPM of 1800. This 4-cylinder, liquid-cooled engine design provides adequate torque for agricultural tasks while ensuring reliable operation in varied conditions. However, the relatively low RPM may limit high-speed performance, making it ideally suited for low-impact farming scenarios such as cultivating or tilling rather than heavy-duty hauling.
| Description |
Continental F124/gasoline/4-cylinder/liquid-cooled |
| Displacement |
124 ci/2.0 L |
| Bore/Stroke |
3.00x4.375 inches/76 x 111 mm |
| Rated RPM |
1800 |
MASSEY-HARRIS 21 COLT ENGINE
The Massey-Harris 21 Colt features a Continental 2.0L 4-cylinder gasoline engine, which offers a balance between power and efficiency for small farm operations. Its compact size allows for ease of maneuvering in tight spaces, although the lower horsepower may limit performance in heavy-duty tasks. Ideal for light tilling and garden work, the 21 Colt is a practical choice for small landholders or hobby farmers seeking reliability in a vintage tractor.
| Description |
Continental 2.0L 4-cyl gasoline |
TRANSMISSION
The Massey-Harris 21 Colt features a simple 4-speed forward and 1-speed reverse gearing system, advantageous for basic agricultural tasks that require straightforward operation. The dry disc clutch enhances durability but may experience slippage under heavy loads, presenting a challenge in high-torque scenarios. Overall, this tractor is well-suited for light to moderate fieldwork, ensuring ease of use for operators familiar with traditional mechanical systems.
| Type |
gear |
| Gears |
4 forward and 1 reverse |
| Clutch |
dry disc |
MECHANICAL
The Massey-Harris 21 Colt is a 4x2 2WD tractor, which provides adequate power for light to moderate agricultural tasks but may struggle in adverse terrain conditions due to lack of four-wheel drive. Its manual steering could lead to operator fatigue during extended use and limited maneuverability in tight spaces, while the open operator station enhances visibility but offers minimal protection from elements. The 4-speed transmission allows for adaptability across various applications, though fewer gears could limit performance in highly variable tasks compared to tractors with more advanced transmission systems.
| Chassis |
4x2 2WD |
| Final drives |
bevel gear |
| Steering |
manual |
| Cab |
Open operator station. |
| Transmission |
4-speed gear |
TRACTOR HITCH
POWER TAKE-OFF (PTO)
| Rear PTO |
transmission |
| Rear RPM |
540 |
MASSEY-HARRIS 21 COLT TIRES
The Massey-Harris 21 Colt features a versatile tire configuration: 4x15/6x12 Ag front tires for improved maneuverability and stability, paired with robust 10x28 Ag rear tires designed for increased traction and load-carrying capacity. The single front tire design enhances agility in tight spaces, making it suitable for small farms or varied terrains, while the larger rear tires provide better performance on softer ground. A challenge may arise in terms of tire availability and compatibility, given its unique sizing amidst modern standards.
| Ag front |
4x15/6x12 (single) |
| Ag rear |
10x28 |
DIMENSIONS
| Wheelbase |
82.7 inches/210 cm |
| Length |
123.3 inches/313 cm |
| Height |
65.8 inches/167 cm |
| Ground clearance |
19.3 inches/49 cm |
| Front tread |
52 to 74 inches/132 to 187 cm (adjustable) |
| Rear tread |
52 to 80 inches/132 to 203 cm |
DIMENSIONS & TIRES
The Massey-Harris 21 Colt tractor features a compact wheelbase of 82.7 inches (210 cm), enhancing maneuverability in tight spaces but potentially limiting stability at high speeds. The front tire size of 4x15 provides decent flotation and traction for lighter loads, whereas the larger rear tires (10x28) are ideally suited for heavier lifting and improved traction in varied field conditions. This combination makes it advantageous for small to medium-scale farming, yet users should be mindful of the tractor's lower horsepower capacity when handling intensive tasks.
| Wheelbase |
82.7 inches/210 cm |
| Front tire |
4x15 |
| Rear tire |
10x28 |
21 COLT SERIAL NUMBERS
| 1952 |
1001 |
| 1953 |
1417 |
| 1954 |
2669 |
| Description |
/how to read serial numbers.../ |
BELT PULLEY
| Diameter |
9.5 inches/24 cm |
| Width |
6.25 inches/15 cm |
| RPM |
1224 |
| Speed |
3044 ft/min/927.81 meters/min |
