Tractor · 1928Unverified
Minneapolis 39-57
Minneapolis 39-57 — Standard-tread tractor · 39 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
39 hp
Max power
35.6 kW
Weight
4397 kg
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Overview
ManufacturerMinneapolis (a part of Minneapolis Threshing Machine Company)Reference
Standard-tread tractorReference
Built in Hopkins, Minnesota, USAReference
Two-wheel driveReference
Manual steeringReference
Open operator station.Reference
Engine
Stearns 10.1L 4-cyl gasolineReference
Drawbar (claimed)29.1 kWReference
Belt (claimed)42.5 kWReference
Drawbar (tested)35.6 kWReference
Belt (tested)48.1 kWReference
StearnsReference
gasolineReference
4-cylinderReference
liquid-cooledReference
Displacement10.1 LReference
Bore/Stroke140 x 165 mmReference
Rated RPM1000Reference
Starter typehand crankReference
Belt power (max)48.1 kWReference
Max power35.6 kWReference
Transmission
2-speed gearReference
TypegearReference
Gears2 forward and 1 reverseReference
Dimensions
Weight4397 kgReference
Rear tire58x19.5Reference
Ag rear58x19.5 (steel)Reference
Capacities
Diameter50 cmReference
Width21 cmReference
RPM620Reference
Test results
June 5 - 14, 1929Link: Nebraska Tractor Test 163 fileReference
Belt fuel use (max)24.2 l/hourReference
Drawbar performanceReference
Max pull2698 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.