Wallis OK 15-27

The Wallis OK 15-27 is a tractor produced by Wallis. It is equipped with a 326.3 ci 5.3 L engine. The rated power output is 28.60 hp 21.3 kW. Transmission: 2 forward and 1 reverse. Operating weight: 3,630 lbs 1646 kg.

Overview

	1923 - 1927 Standard-tread tractor
1923 - 1927
Standard-tread tractor

Production
Manufacturer	Wallis (a part of J.I. Case Plow Works)
Standard-tread tractor
Built in Racine, Wisconsin, USA

Wallis OK 15-27 Engine
Wallis 5.3L 4-cyl gasoline
Engine details ...

Wallis OK 15-27 Transmission
2-speed gear
Transmission details ...

Wallis OK 15-27 Power
Drawbar (claimed)	15 hp 11.2 kW
Belt (claimed)	27 hp 20.1 kW
Drawbar (tested)	18.15 hp 13.5 kW
Belt (tested)	28.60 hp 21.3 kW
Performance test details ...

Mechanical
Two-wheel drive
Steering	manual

Dimensions & Tires
Weight	3,630 lbs 1646 kg
Front tire	30x8
Rear tire	48x12
Full dimensions and tires ...

Belt Pulley
Diameter	18.5 inches 46 cm
Width	7 inches 17 cm
RPM	475
Speed	2,300 ft/min 701.04 meters/min

Engine

Engine Detail — 326.3 ci / 5.3 L Gasoline

Manufacturer	Wallis
Fuel Type	Gasoline
Configuration	4-cylinder, liquid-cooled
Displacement	326.3 ci 5.3 L
Bore/Stroke	4.25x5.75 inches 108 x 146 mm
Rated RPM	1000
Starter type	hand-crank

Transmission

Transmission — 2 forward and 1 reverse gear

Type	gear
Gears	2 forward and 1 reverse

Dimensions

Wallis OK 15-27 Tires
Ag front	30x8 (steel)
Ag rear	48x12 (steel)

Dimensions
Length	132 inches 335 cm
Width	61 inches 154 cm
Height	65 inches 165 cm
Weight	3,630 lbs 1646 kg

Tests

Nebraska Tractor Test 92
Gasoline 2-speed 2WD April 26 - May 5, 1923
Belt power (max)	28.60 hp 21.3 kW
Belt fuel use (max)	3.5 gal/hour 13.2 l/hour
Drawbar performance
Max power	18.15 hp 13.5 kW
Max pull	2,590 lbs 1174 kg

Photos

Wallis OK 15-27 tractor photo