Overview
The Wallis K 15-25 is a standard-tread farm tractor produced in Racine, Wisconsin, between 1919 and 1923. It features a 5.3L four-cylinder liquid-cooled gasoline engine rated at 900 RPM and is equipped with a hand-crank starter. The mechanical configuration includes a two-speed gear transmission and manual steering on a two-wheel drive chassis.
Ideal Applications
Nebraska Test Performance:
During Nebraska Tractor Test 49, the tractor achieved a maximum belt power of 29.87 hp and a maximum drawbar pull of 2,782 lbs while consuming 3.2 gallons of fuel per hour at max belt load.
Belt Pulley Specifications:
The tractor is equipped with an 18-inch diameter belt pulley with a 6.75-inch width that operates at 430 RPM, providing a belt speed of 2,020 feet per minute.
Engine and Mechanical Configuration:
This 3,500-pound tractor utilizes a 326.3 ci gasoline engine and a gear transmission with two forward speeds and one reverse speed to operate two to three 14-inch plows.
Production
| Description | Standard-tread tractor / Built in Racine, Wisconsin, USA |
|---|---|
| Manufacturer | Wallis (a part of J.I. Case Plow Works) |
Engine
| Engine type | Wallis 5.3L 4-cyl gasoline |
|---|---|
| Bore/Stroke | 4.25x5.75 inches (108 x 146 mm) |
| Description | Wallis / gasoline / 4-cylinder / liquid-cooled |
| Displacement | 326.3 ci (5.3 L) |
| Rated RPM | 900 |
| Starter type | hand-crank |
| Belt (claimed) | 25 hp (18.6 kW) |
| Belt (tested) | 29.87 hp (22.3 kW) |
| Drawbar (claimed) | 15 hp (11.2 kW) |
| Drawbar (tested) | 18.58 hp (13.9 kW) |
| Plows | 2-3 (14 inch) |
Transmission
| Gears | 2 forward and 1 reverse |
|---|---|
| Transmission type | 2-speed gear |
| Type | gear |
Mechanical
| Drive type | Two-wheel drive |
|---|---|
| Steering | manual |
Dimensions & Tires
| Height | 65 inches (165 cm) |
|---|---|
| Length | 132 inches (335 cm) |
| Weight | 3,500 lbs (1587 kg) |
| Width | 61 inches (154 cm) |
| Weight | 3,500 lbs (1587 kg) |
Belt Pulley
| Diameter | 18 inches (45 cm) |
|---|---|
| RPM | 430 |
| Speed | 2,020 ft/min (615.70 meters/min) |
| Width | 6.75 inches (17 cm) |
Nebraska Tractor Test 49
| Belt fuel use (max) | 3.2 gal/hour (12.1 l/hour) |
|---|---|
| Belt power (max) | 29.87 hp (22.3 kW) |
| Description | Gasoline 2-speed 2WDAugust 7 - 16, 1920 / Drawbar performance |
| Max power | 18.58 hp (13.9 kW) |
| Max pull | 2,782 lbs (1261 kg) |