Tractor · 1930Unverified
Massey-Harris GP 15/22
Massey-Harris GP 15/22 — Four-wheel Drive (4WD) tractor · 15 hp. Reference specifications; pending source verification.
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
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.