Hart-Parr 20 tractor specifications

1920 - 1924

1920 - 1924 Standard-tread tractor

Production

Production Manufacturer:Hart-Parr
Type:Standard-tread tractor
Factory:Charles City, Iowa, USA
Original price:$1,195 (1924 )

Hart-Parr 20 Power

Hart-Parr 20 Power 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
power test details ...

1920 - 1924

Standard-tread tractor

Nebraska Tractor Test 79

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

Hart-Parr 20 Engines

Hart-Parr 20 Engines Hart-Parr 4.6L 2-cyl gasoline Hart-Parr 5.1L 2-cyl Engine details ...

1920 - 1924

Standard-tread tractor

Engines overview

Engines overview
Hart-Parr 4.6L 2-cyl gasoline
Hart-Parr 5.1L 2-cyl

Engine Detail

Engine Detail
Hart-Parr
gasoline
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

Engine Detail
Hart-Parr
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