Tractor · 1923Unverified
Wallis OK 15-27
Wallis OK 15-27 — Standard-tread 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
13.5 kW
Weight
1646 kg
Hover a source tag to verify
Overview
ManufacturerWallis (a part of J.I. Case Plow Works)Reference
Standard-tread tractorReference
Built in Racine, Wisconsin, USAReference
Two-wheel driveReference
SteeringmanualReference
Engine
Wallis 5.3L 4-cyl gasolineReference
Drawbar (claimed)11.2 kWReference
Belt (claimed)20.1 kWReference
Drawbar (tested)13.5 kWReference
Belt (tested)21.3 kWReference
WallisReference
gasolineReference
4-cylinderReference
liquid-cooledReference
Displacement5.3 LReference
Bore/Stroke108 x 146 mmReference
Rated RPM1000Reference
Starter typehand-crankReference
Belt power (max)21.3 kWReference
Max power13.5 kWReference
Transmission
2-speed gearReference
TypegearReference
Gears2 forward and 1 reverseReference
Dimensions
Weight1646 kgReference
Front tire30x8Reference
Rear tire48x12Reference
Ag front30x8 (steel)Reference
Ag rear48x12 (steel)Reference
Length335 cmReference
Width154 cmReference
Height165 cmReference
Capacities
Diameter46 cmReference
Width17 cmReference
RPM475Reference
Speed701.04 meters/minReference
Test results
Gasoline 2-speed 2WDApril 26 - May 5, 1923Reference
Belt fuel use (max)13.2 l/hourReference
Drawbar performanceReference
Max pull1174 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.