| Manufacturer | Hart-Parr |
| Price | 1,395(USD) |
| Model | 30 |
| Equipment Type | Standard-Tread Tractors |
| Factory | Charles City, Iowa, USA |
NEBRASKA TRACTOR TEST 26
| Description | Kerosene 2-speed 2WD/June 17 - 22, 1920/Link: Nebraska Tractor Test 26 file/Drawbar performance |
| Belt power (max) | 31.37 hp/23.4 kW |
| Belt fuel use (max) | 4.7 gal/hour/17.8 l/hour |
| Max power | 19.65 hp/14.7 kW |
| Max pull | 3494 lbs/1584 kg |
HART-PARR 30 POWER
| Drawbar (claimed) | 15 hp/11.2 kW |
| Belt (claimed) | 30 hp/22.4 kW |
| Plows | 3 |
| Drawbar (tested) | 19.65 hp/14.7 kW |
| Belt (tested) | 31.37 hp/23.4 kW |
ENGINE DETAIL
The Hart-Parr 30 tractor, featuring a 2-cylinder liquid-cooled gasoline engine with a displacement of 464.6 ci (7.6 L), offers robust torque at low RPMs. Its bore-stroke ratio of 6.50x7.00 inches (165 x 178 mm) suggests a design optimized for high torque output, which can be advantageous in agricultural applications requiring substantial pulling power. However, rated only at 750 RPM, the engine's maximum speed may limit its versatility compared to more modern tractors capable of higher RPMs for varied field operations.
| Description | Hart-Parr/gasoline/2-cylinder/liquid-cooled |
| Displacement | 464.6 ci/7.6 L |
| Bore/Stroke | 6.50x7.00 inches/165 x 178 mm |
| Rated RPM | 750 |
HART-PARR 30 ENGINE
The Hart-Parr 30 features a robust 7.6L 2-cylinder gasoline engine, providing a balance of power and efficiency for agricultural applications. Its relatively low displacement allows for easier maintenance but may limit performance under continuous heavy loads. Owners should be mindful of fuel consumption and engine wear over prolonged usage in demanding environments, making it ideal for lighter fieldwork or smaller farms.
| Description | Hart-Parr 7.6L 2-cyl gasoline |
TRANSMISSION
The Hart-Parr 30 tractor's [-|-] gear system, featuring 2 forward and 1 reverse gear, offers simplicity and ease of use, making it suitable for light agricultural tasks. However, the limited gear selection may challenge operations requiring varied speed and torque, which could hinder efficiency in more demanding applications. This tractor is ideal for farmers seeking reliable and straightforward machinery for smaller fields or gardens.
| Type | gear |
| Gears | 2 forward and 1 reverse |
MECHANICAL
The Hart-Parr 30 tractor features a 4x2 2WD chassis, providing basic traction for lighter farming applications but lacking the stability of 4WD in challenging terrain. Its manual steering can lead to operator fatigue over extended periods, while the 2-speed transmission allows flexibility in speed selection for varied tasks, though it may limit performance under heavy loads. The open operator station enhances visibility and ventilation, yet offers minimal protection from the elements, making it suitable for milder working conditions.
| Chassis | 4x2 2WD |
| Final drives | bull gear |
| Steering | manual |
| Cab | Open operator station. |
| Transmission | 2-speed gear |
HART-PARR 30 TIRES
The Hart-Parr 30 tractor features robust steel wheel configurations, with 28x5-inch front wheels facilitating maneuverability and a 52x10-inch rear wheel design providing enhanced traction in agricultural applications. This combination is advantageous for field work in varied soil conditions, although the steel wheels may contribute to soil compaction and limit floatation in soft terrains. Ideal for row cropping or heavy pulling tasks, proper tire management and implement selection are essential to maximize performance and minimize soil disturbance.
| Ag front | 28x5 (steel) |
| Ag rear | 52x10 (steel) |
DIMENSIONS
| Length | 141 inches/358 cm |
| Width | 76 inches/193 cm |
| Height | 61 inches/154 cm |
| Operating weight | 5450 lbs/2472 kg |
DIMENSIONS & TIRES
The Hart-Parr 30 tractor, weighing 5,450 lbs (2,472 kg), features a robust tire configuration with 28x5 front tires and 52x10 rear tires, providing good traction and stability for agricultural tasks. The larger rear tires enhance weight distribution and reduce soil compaction, which is advantageous for tilling and cultivating. However, the tractor's weight may impact maneuverability in tighter spaces, making it better suited for open fields and heavy-duty applications.
| Weight | 5450 lbs/2472 kg |
| Front tire | 28x5 |
| Rear tire | 52x10 |
30 SERIAL NUMBERS
| 1919 | 9383 |
| 1920 | 13018 |
| 1921 | 18475 |
| 1922 | 21000 (30C) |
| 1923 | 21393 (30C) |
| 1924 | 21865 (30C) |