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Years in Production / 1923–1927
Hart-Parr
40
Explore the specifications, hardware, and original references for the Hart-Parr 40.
No photo
44hp
Engine estimate · from belt
2WD Only
Drive
1923–1927
Production years
Hart-Parr
Manufacturer
40 / 01
At a glance
Production
Standard-tread tractor
Built in Charles City, Iowa, USA
Original price was $2,250 in 1927
- Manufacturer
- Hart-Parr
Belt Pulley
- Diameter
- 14 inches35 cm
- Width
- 9 inches22 cm
- Rpm
- 800
- Speed
- 2750 ft/min838.20 meters/min
Mechanical
Two-wheel drive
Manual steering
Open operator station.
40 / 02
Under the hood
Engine Detail
Hart-Parr
gasoline
4-cylinder
liquid-cooled
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.
- Displacement
- 617.7 ci10.1 L
- Bore Stroke
- 5.50x6.50 inches140 x 165 mm
- Rated Rpm
- 800
- Fuel Type
- gasoline
- Cylinders
- 4
- Cooling
- liquid-cooled
40 / 03
Gears & controls
Transmission
- Transmission Type
- gear
- Gears
- 2 forward and 1 reverse
- Clutch
- mechanical contracting band
40 / 04
Size. Stance. Footprint.
Dimensions And Tires
- Weight
- 7500 lbs3402 kg
- Front Tire
- 28x5
- Rear Tire
- 52x13
Tires And Tracks
- Front Ag
- 28x5 (steel)
- Rear Ag
- 52x13 (steel)
40 / 05
Tests (NTTL)
Nebraska Tractor Test 97
Kerosene 2-speed 2WDJuly 10 - 19, 1923
Drawbar performance
- Id
- 97
- Belt Power Max
- 46.40 hp34.6 kW
- Belt Fuel Use Max
- 6.3 gal/hour23.8 l/hour
- Max Power
- 28.23 hp21.1 kW
- Max Pull
- 4830 lbs2190 kg