Hart-Parr 20
The Hart-Parr 20 is a tractor produced by Hart Parr. It is equipped with a 309 ci 5.1 L engine. Transmission: 2 forward and 1 reverse. Operating weight: 4440 lbs 2013 kg.
Fuel & Capacities
Gasoline
Transmission
2 forward and 1 reverse
Operating Weight
4440 lbs
2013 kg
Overview
 | 1920 - 1924
Standard-tread tractor |
|---|
Production | |
|---|---|
Manufacturer | Hart-Parr |
Standard-tread tractor | |
Built in Charles City, Iowa, USA | |
Original price was $1,195 in 1924 | |
Hart-Parr 20 Transmission | |
|---|---|
2-speed gear | |
Transmission details ...  |
Hart-Parr 20 Power | |
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Drawbar (claimed) | 10 hp
7.5 kW |
Belt (claimed) | 20 hp
14.9 kW |
Drawbar (tested) | 14.08 hp
10.5 kW |
Belt (tested) | 23.01 hp
17.2 kW |
Performance test details ...  | |
Mechanical | |
|---|---|
Two-wheel drive | |
Final drives | bull gear |
Manual steering | |
Open operator station. | |
Dimensions & Tires | |
|---|---|
Weight | 4440 lbs
2013 kg |
Front tire | 28x5 |
Rear tire | 46x10 |
Full dimensions and tires ...  | |
Engine
Engine options | |
|---|---|
Hart-Parr 4.6L 2-cyl gasoline | |
Hart-Parr 5.1L 2-cyl |
Engine Detail — 281.4 ci / 4.6 L Gasoline
Manufacturer | Hart-Parr |
Fuel Type | Gasoline |
Configuration | 2-cylinder, liquid-cooled |
Displacement | 281.4 ci
4.6 L |
Bore/Stroke | 5.25x6.50 inches
133 x 165 mm |
Rated RPM | 800 |
Engine Detail — 309 ci / 5.1 L
Manufacturer | Hart-Parr |
Configuration | 2-cylinder, liquid-cooled |
The larger engine was used in the model 20C beginning at tractor serial number 35501. | |
Displacement | 309 ci
5.1 L |
Bore/Stroke | 5.50x6.50 inches
140 x 165 mm |
Transmission
Transmission — 2 forward and 1 reverse gear
Type | gear |
Gears | 2 forward and 1 reverse |
 | |
Dimensions
Hart-Parr 20 Tires | |
|---|---|
Ag front | 28x5 steel |
Ag rear | 46x10 steel |
Dimensions | |
|---|---|
Weight | 4440 lbs
2013 kg |
Tests
Nebraska Tractor Test 79 | |
|---|---|
Kerosene 2-speed 2WD
June 11 - 17, 1921
Link: Nebraska Tractor Test 79 file | |
Belt power (max) | 23.01 hp
17.2 kW |
Drawbar performance | |
Max power | 14.08 hp
10.5 kW |
Max pull | 2500 lbs
1134 kg |
Photos
Hart-Parr 20C.
Hart Parr Hart-Parr 20 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Hart Parr Hart-Parr 20.
Converted Equivalents:
Horsepower (HP)0 hp
Kilowatts (kW)0 kW
Metric Horsepower (PS / CV)0 PS
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