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Tractor · 1930Unverified

Hart-Parr 18-28

Name: Hart-Parr 18-28
Brand: Hart-Parr

Hart-Parr 18-28 — Standard-tread tractor · 18 hp. Reference specifications; pending source verification.

The Hart-Parr 18-28 is a compact tractor model with a rated power output of 18 hp. It was manufactured between 1930 and 1936. The tractor features a 4-cylinder liquid-cooled engine, a two-wheel drive system and a 3-speed gearbox. Its listed weight ranges from 3800 to 4165 pounds, with an intended application of approximately 200 acres.

Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.

Rated power

18 hp

Max power

17.6 kW

Weight

3800 to 4165 pounds

Catalogue coverage

Variants represented

Richest spec table

48 rows

Recorded power

18 hp

Recorded weight

1723 kg

Transmissions

3-speed gear

Production years

1930-1936

Verified variants

No linked source document is currently displayed; verify critical figures with the manufacturer or dealer.

Hover a source tag to verify

Overview

ManufacturerHart-Parr (a part of Oliver)Reference

Standard-tread tractorReference

Built in Charles City, Iowa, USAReference

Two-wheel driveReference

Manual steeringReference

Open operator station.Reference

Variants

18-27row-cropReference

18-28standardReference

Engine

Oliver 4.6L 4-cyl keroseneReference

Fuel tank53.0 LReference

Aux. fuel3.8 LReference

Drawbar (claimed)13.4 kWReference

Belt (claimed)20.9 kWReference

Drawbar (tested)17.6 kWReference

Belt (tested)22.6 kWReference

OliverReference

keroseneReference

4-cylinderReference

liquid-cooledReference

Displacement4.6 LReference

Bore/Stroke105 x 133 mmReference

Coolant capacity30.3 LReference

Belt power (max)22.6 kWReference

Max power17.6 kWReference

Transmission

3-speed gearReference

TypegearReference

Gears3 forward and 1 reverseReference

Dimensions

Wheelbase184 cmReference

Weight3800 to 4165 poundsReference

Front tire28x5Reference

Rear tire44x10Reference

Ag front28x5Reference

Ag rear44x10Reference

Length284 cmReference

Width154 cmReference

Height (hood)135 cmReference

Shipping weight1723 kgReference

Operating weight1889 kgReference

Capacities

Diameter36 cmReference

Width18 cmReference

RPM726Reference

Speed825.70 meters/minReference

Test results

Kerosene 3-speed 2WDJuly 7 - 15, 1930Link: Nebraska Tractor Test 180 fileReference

Belt fuel use (max)11.4 l/hourReference

Drawbar performanceReference

Gear 1 used for power test.Reference

Max pull1470 kgReference

Gear 1 used for pull test.Reference

Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.

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