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Tractor · 1930Unverified

Massey-Harris GP 15/22

Name: Massey-Harris GP 15/22
Brand: Massey-Harris

Massey-Harris GP 15/22 — Four-wheel Drive (4WD) tractor · 15 hp. Reference specifications; pending source verification.

The Massey-Harris GP 15/22 is a tractor with a rated power output of 15 horsepower, positioning it within the lighter end of its class. Manufactured from 1930 to 1936, this model is equipped with a 4-cylinder petrol liquid-cooled engine and features four-wheel drive with a 3-speed gearbox. The tractor has an operating weight of 1769 kg, and is suitable for use on areas of up to 200 acres.

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

Rated power

15 hp

Max power

14.8 kW

Weight

1769 kg

Catalogue coverage

Variants represented

Richest spec table

71 rows

Recorded power

15 hp

Recorded weight

1769 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

ManufacturerMassey-HarrisReference

Four-wheel Drive (4WD) tractorReference

Built in Racine, Wisconsin, USAReference

Total built3,000Reference

Original price$1,000Reference

The Massey-Harris 15/22 GP General Purpose tractor was the first Massey-Harris designed tractor.Reference

Drive4x4 4WDReference

Open operator station.Reference

Engine

Hercules 3.7L 4-cyl gasolineReference

Fuel tank53.0 LReference

Aux. fuel6.1 LReference

Drawbar (claimed)11.2 kWReference

Belt (claimed)16.4 kWReference

Plows2 (14-inch)Reference

Drawbar (tested)14.8 kWReference

Belt (tested)18.5 kWReference

Hercules OOCReference

gasolineReference

4-cylinderReference

liquid-cooled vertical L-headReference

Displacement3.7 LReference

Bore/Stroke102 x 114 mmReference

Air cleaneroil bathReference

Rated RPM1200Reference

Coolant capacity15.1 LReference

Hercules OHCReference

liquid-cooledReference

The overhead-valve (OHV) Hercules engine replaced the flathead OOC in 1936, the final year of the GP production.Reference

Belt power (max)18.5 kWReference

Max power14.8 kWReference

Belt power (max)16.8 kWReference

Max power12.5 kWReference

Transmission

3-speed gearReference

TypegearReference

Gears3 forward and 1 reverseReference

Dimensions

Weight1769 kgReference

Front tire38x8Reference

Rear tire38x8Reference

Ag front38x8 steelReference

Ag rear38x8 steelReference

Length302 cmReference

Height139 cmReference

Ground clearance76 cmReference

Front tread101 to 0 cmReference

Front tread152 to 0 cmReference

Front tread167 to 0 cmReference

Front tread193 to 0 cmReference

Rear tread101 to 0 cmReference

Rear tread152 to 0 cmReference

Rear tread167 to 0 cmReference

Rear tread193 to 0 cmReference

GP Serial Numbers

Location:Left-rear of tractor frame.Reference

1930300001Reference

1936303001Reference

FAQ: How to read a serial number table.Reference

Capacities

Diameter30 cmReference

Width16 cmReference

RPM802Reference

Speed0.78 meters/minReference

Test results

NTTL 177: gasoline 3-speed 4WDReference

NTTL 191: distillate 3-speed 4WDReference

Gasoline 3-speed 4WDMay 5 - 27, 1930Link: Nebraska Tractor Test 177 fileReference

Belt fuel use (max)11.4 l/hourReference

Drawbar performanceReference

Gear 1 used for power test.Reference

Max pull1472 kgReference

Gear 1 used for pull test.Reference

Distillate 3-speed 4WDMay 22 - June 12, 1931Link: Nebraska Tractor Test 191 fileReference

Belt fuel use (max)11.0 l/hourReference

Gear 2 used for power test.Reference

Max pull1253 kgReference

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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