Introduction
Hart-Parr 12-24 Standard-Tread Tractor
The Hart-Parr 12-24 is a vintage agricultural tractor produced between 1924 and 1930 in Charles City, Iowa, USA. As a standard-tread machine of its era, it was designed for general field work and represents a significant period in early twentieth-century agricultural mechanization.
Engine and Performance
The tractor is powered by a liquid-cooled, 2-cylinder gasoline engine with a displacement of 337.6 cubic inches (5.5 liters). It operates at a rated speed of 850 RPM, delivering approximately 26 horsepower. The engine features a bore and stroke of 5.75 by 6.50 inches, which was characteristic of the robust engine designs produced by Hart-Parr during this period.
Transmission and Drivetrain
The Hart-Parr 12-24 utilizes a gear-type transmission. Operators were provided with two configuration options: a 2-speed gear set or a 3-speed gear set, both featuring a single reverse gear. This transmission system drives the rear wheels in a two-wheel-drive configuration, suitable for the traction requirements of standard agricultural operations of the 1920s.
Mechanical Specifications and Dimensions
The machine features manual steering and an open operator station. It has a total length of 116 inches (294 cm), a width of 66 inches (167 cm), and a height of 56 inches (142 cm). The tractor weighs 4,440 lbs (2,013 kg) and is equipped with steel wheels, specifically 28x5 in the front and 46x10 in the rear, which were the industry standard for ground engagement before the widespread adoption of pneumatic rubber tires.
Conclusion
The Hart-Parr 12-24 is a representative example of 1920s tractor engineering. With its reliable 2-cylinder engine and straightforward mechanical layout, it served as a primary power source for farms of its time. Today, it is primarily sought after by collectors and enthusiasts of agricultural history interested in the development of vintage internal combustion tractors.
Production Information of Hart-Parr, 12-24
- Original price was $1,050 in 1930
- Standard-tread tractor
- Built in Charles City, Iowa, USA
| Manufacturer | Hart-Parr |
|---|
Dimension and Tires Information of Hart-Parr, 12-24
| Length | 116 inches [294 cm] |
|---|---|
| Weight | 4440 lbs [2013 kg] |
| Width | 66 inches [167 cm] |
| Height | 56 inches [142 cm] |
| Ag front | 28x5 (steel) |
|---|---|
| Ag rear | 46x10 (steel) |
Engine Specifications of Hart-Parr, 12-24
- Hart-Parr
- Liquid-cooled
- Gasoline
- 2-cylinder
| Rated RPM | 850 |
|---|---|
| Displacement | 337.6 ci [5.5 L] |
| Bore/Stroke | 5.75x6.50 inches [146 x 165 mm] |
Transmission Information of Hart-Parr, 12-24
Transmission variants 1
| Type | Gear |
|---|---|
| Gears | 2 forward and 1 reverse |
Transmission variants 2
| Type | Gear |
|---|---|
| Gears | 3 forward and 1 reverse |
- 2-speed gear
- 3-speed gear
Mechanical Specs of Hart-Parr, 12-24
- Two-wheel drive
- Manual steering
- Open operator station.
Power Information of Hart-Parr, 12-24
- Https://www.tractordata.com/farm-tractors/002/9/5/2953-hart-parr-12-24-tests.html
Where it sits
With 26 hp[B] HP, the Hart-Parr 12-24 sits between Little Devil 25-22 (24 HP) and Crop Maker 17-27 (30 HP) in Hart-Parr's range. Its power puts it in the 25th percentile of 1920s models in our database (181 machines).
Frequently asked questions
How much horsepower does the Hart-Parr 12-24 have?
The Hart-Parr 12-24 delivers 26 hp[B] HP.
What years was the Hart-Parr 12-24 produced?
The Hart-Parr 12-24 was produced in 1924-1930.
What engine does the Hart-Parr 12-24 have?
The Hart-Parr 12-24 is powered by a Gasoline, 2-cylinder engine.
What transmission does the Hart-Parr 12-24 use?
The Hart-Parr 12-24 uses a Gear transmission.
How much does the Hart-Parr 12-24 weigh?
The Hart-Parr 12-24 weighs 4440 lbs [2013 kg].
Is the Hart-Parr 12-24 4WD?
The Hart-Parr 12-24 is available in 2WD.