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Tractor · 1927Unverified

Wallis 20-30

Name: Wallis 20-30
Brand: Wallis

Wallis 20-30 — Standard-tread tractor · 20 hp. Reference specifications; pending source verification.

The Wallis 20-30 is a tractor with an approximate engine rating of 20 hp, positioning it at the lower end of its class. It was manufactured from 1927 to 1932. The tractor features a 4-cylinder petrol liquid-cooled engine, coupled with two-wheel drive and a 2-speed gearbox. Its listed operating weight is 1876 kg, and it is 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

20 hp

Max power

20.1 kW

Weight

1876 kg

Catalogue coverage

Variants represented

Richest spec table

41 rows

Recorded power

20 hp

Recorded weight

1876 kg

Transmissions

2-speed gear

Production years

1927-1932

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

Open operator station.Reference

Engine

Wallis 5.7L 4-cyl gasolineReference

Fuel tank75.7 LReference

Aux. fuel6.6 LReference

Drawbar (claimed)14.9 kWReference

Belt (claimed)22.4 kWReference

Plows3Reference

Drawbar (tested)20.1 kWReference

Belt (tested)26.3 kWReference

WallisReference

gasolineReference

4-cylinderReference

liquid-cooledReference

Displacement5.7 LReference

Bore/Stroke111 x 146 mmReference

Rated RPM1050Reference

Starter typehand-crankReference

Belt power (max)26.3 kWReference

Max power20.1 kWReference

Transmission

2-speed gearReference

TypegearReference

Gears2 forward and 1 reverseReference

Clutchdry discReference

Dimensions

Wheelbase213 cmReference

Weight1876 kgReference

Rear tire48x12Reference

Ag rear48x12 (steel)Reference

Length334 cmReference

Height139 cmReference

Capacities

Diameter48 cmReference

Width17 cmReference

RPM475Reference

Test results

Gasoline 2-speed 2WDApril 29 - May 10, 1927Link: Nebraska Tractor Test 134 fileReference

Belt fuel use (max)15.9 l/hourReference

Drawbar performanceReference

Max pull1546 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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