Hart-Parr 40
Power
44 hp[B] hp
Production
1923-1927
Engine
Gasoline, The Hart-Parr 22-40 used a pair of two-cylinder engine blocks from the 20C on a single crankshaft to create the four-cylinder engine. Early models used two carburetors while later models had a single carburetor to feed both blocks.
Transmission
Gear
Weight
7500 lbs [3402 kg]
Drive
2WD
Introduction
Hart-Parr 40: Standard-Tread Agricultural Tractor
The Hart-Parr 40 is a standard-tread tractor produced between 1923 and 1927 in Charles City, Iowa, USA. Designed for heavy agricultural field work, this model represents a significant era in early 20th-century tractor manufacturing.
Engine and Performance
The tractor is powered by a 4-cylinder, liquid-cooled gasoline engine with a displacement of 617.7 cubic inches (10.1 L). It features a bore and stroke of 5.50 x 6.50 inches (140 x 165 mm). The engine was constructed by pairing two two-cylinder blocks from the 20C model onto a single crankshaft. It operates at a rated speed of 800 RPM and produces approximately 44 horsepower, providing the necessary torque for field operations.
Transmission and Drivetrain
The Hart-Parr 40 utilizes a mechanical transmission system providing two forward gears and one reverse gear. Power is transferred via a mechanical contracting band clutch. The vehicle features a two-wheel drive configuration, paired with manual steering to manage its operational movement.
Chassis and Dimensions
Built with a heavy-duty frame, the tractor weighs 7,500 lbs (3,402 kg). It measures 140 inches (355 cm) in length, 96 inches (243 cm) in width, and 170 cm in height. The machine is equipped with steel wheels, utilizing 28x5 wheels at the front and 52x13 wheels at the rear to support its weight and provide traction on agricultural soil.
Conclusion
With its robust 4-cylinder engine and sturdy steel-wheel construction, the Hart-Parr 40 was designed for primary traction and heavy-duty field tasks during the mid-1920s. It remains a notable example of early industrial agricultural machinery.
Production Information of Hart-Parr, 40
- Original price was $2,250 in 1927
- Standard-tread tractor
- Built in Charles City, Iowa, USA
| Manufacturer | Hart-Parr |
|---|
Dimension and Tires Information of Hart-Parr, 40
| Length | 140 inches [355 cm] |
|---|---|
| Weight | 7500 lbs [3402 kg] |
| Width | 96 inches [243 cm] |
| Height | 67 inches [170 cm] |
| Ag front | 28x5 (steel) |
|---|---|
| Ag rear | 52x13 (steel) |
Engine Specifications of Hart-Parr, 40
- Hart-Parr
- The Hart-Parr 22-40 used a pair of two-cylinder engine blocks from the 20C on a single crankshaft to create the four-cylinder engine. Early models used two carburetors while later models had a single carburetor to feed both blocks.
- Liquid-cooled
- Gasoline
- 4-cylinder
| Bore/Stroke | 5.50x6.50 inches [140 x 165 mm] |
|---|---|
| Rated RPM | 800 |
| Displacement | 617.7 ci [10.1 L] |
Transmission Information of Hart-Parr, 40
Transmission variants 1
| Type | Gear |
|---|---|
| Gears | 2 forward and 1 reverse |
| Clutch | Mechanical contracting band |
Mechanical Specs of Hart-Parr, 40
- Two-wheel drive
- Manual steering
- Open operator station.
Power Information of Hart-Parr, 40
- Https://www.tractordata.com/farm-tractors/002/9/5/2952-hart-parr-40-tests.html
Where it sits
With 44 hp[B] HP, the Hart-Parr 40 sits between 18-36 (40 HP) and 28-44 (48 HP) in Hart-Parr's range. Its power puts it in the 79th percentile of 1920s models in our database (181 machines).
Frequently asked questions
How much horsepower does the Hart-Parr 40 have?
The Hart-Parr 40 delivers 44 hp[B] HP.
What years was the Hart-Parr 40 produced?
The Hart-Parr 40 was produced in 1923-1927.
What engine does the Hart-Parr 40 have?
The Hart-Parr 40 is powered by a Gasoline, The Hart-Parr 22-40 used a pair of two-cylinder engine blocks from the 20C on a single crankshaft to create the four-cylinder engine. Early models used two carburetors while later models had a single carburetor to feed both blocks. engine.
What transmission does the Hart-Parr 40 use?
The Hart-Parr 40 uses a Gear transmission.
How much does the Hart-Parr 40 weigh?
The Hart-Parr 40 weighs 7500 lbs [3402 kg].
Is the Hart-Parr 40 4WD?
The Hart-Parr 40 is available in 2WD.