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Tractor · 1923Unverified

Wallis OK 15-27

Name: Wallis OK 15-27
Brand: Wallis

Wallis OK 15-27 — Standard-tread tractor · 15 hp. Reference specifications; pending source verification.

The Wallis OK 15-27 is a tractor model rated at approximately 15 horsepower, situated at the lower end of its class in terms of power output. It was manufactured between 1923 and 1927. The tractor features a 4-cylinder, liquid-cooled petrol engine, paired with a two-wheel drive system and a 2-speed gearbox. Its operating weight is listed as 1646 kg, suitable for operations covering 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

13.5 kW

Weight

1646 kg

Catalogue coverage

Variants represented

Richest spec table

39 rows

Recorded power

15 hp

Recorded weight

1646 kg

Transmissions

2-speed gear

Production years

1923-1927

Verified variants

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

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.

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