Wallis
Wallis 20-30
The Wallis 20-30 is a standard-tread farm tractor produced from 1927 to 1932 by Wallis, a part of J.I. Case Plow Works, built in Racine, Wisconsin, USA. It features a Wallis 5.7L 4-cylinder liquid-cooled gasoline engine with a displacement of 346 ci (5.7 L), rated at 1050 RPM and started by hand-crank. The tractor has a 2-speed gear transmission with dry disc clutch, two-wheel drive, and manual steering with an open operator station. Power ratings include 20 hp drawbar (claimed) and 30 hp belt (claimed), with tested drawbar power of 27.01 hp and belt power of 35.29 hp. It can pull 3 plows. Dimensions include a wheelbase of 84 inches, length of 131.5 inches, height of 55 inches, and weight of 4,136 lbs. The rear tires are 48x12 steel. The belt pulley diameter is 19 inches with a width of 7 inches and runs at 475 RPM.
Power33 hp[B]
Founded1927 - 1932
Model20-30
Technical Specifications
Detailed specifications and technical data for Wallis 20-30
Power
| Plows | 3 |
|---|---|
| Belt (tested) | 35.29 hp (26.3 kW) |
| Belt (claimed) | 30 hp (22.4 kW) |
| Drawbar (tested) | 27.01 hp (20.1 kW) |
| Drawbar (claimed) | 20 hp (14.9 kW) |
Tires
| Rear tire | 48x12 (steel) |
|---|
Engine
| Model | Wallis 5.7L 4-cyl gasoline |
|---|---|
| Cooling | liquid-cooled |
| Aux. fuel | 1.75 gal (6.6 L) |
| Cylinders | 4-cylinder |
| Fuel tank | 20 gal (75.7 L) |
| Rated RPM | 1050 |
| Bore/Stroke | 4.375x5.75 inches (111 x 146 mm) |
| Displacement | 346 ci (5.7 L) |
| Starter type | hand-crank |
Dimensions
| Height | 55 inches (139 cm) |
|---|---|
| Length | 131.5 inches (334 cm) |
| Weight | 4,136 lbs (1876 kg) |
| Wheelbase | 84 inches (213 cm) |
Mechanical
| Drive | Two-wheel drive |
|---|---|
| Steering | manual |
| Operator station | Open operator station |
Production
| Type | Standard-tread tractor |
|---|---|
| Built in | Racine, Wisconsin, USA |
| Years produced | 1927 - 1932 |
Belt Pulley
| RPM | 475 |
|---|---|
| Width | 7 inches (17 cm) |
| Diameter | 19 inches (48 cm) |
Transmission
| Type | gear |
|---|---|
| Gears | 2 forward and 1 reverse |
| Clutch | dry disc |