| Manufacturer |
Wallis |
| Price |
- |
| Model |
20-30 |
| Equipment Type |
Standard-Tread Tractors |
| Factory |
Racine, Wisconsin, USA |
NEBRASKA TRACTOR TEST 134
| Description |
Gasoline 2-speed 2WD/April 29 - May 10, 1927/Link: Nebraska Tractor Test 134 file/Drawbar performance |
| Belt power (max) |
35.29 hp/26.3 kW |
| Belt fuel use (max) |
4.2 gal/hour/15.9 l/hour |
| Max power |
27.01 hp/20.1 kW |
| Max pull |
3,409 lbs/1546 kg |
WALLIS 20-30 POWER
| Drawbar (claimed) |
20 hp/14.9 kW |
| Belt (claimed) |
30 hp/22.4 kW |
| Plows |
3 |
| Drawbar (tested) |
27.01 hp/20.1 kW |
| Belt (tested) |
35.29 hp/26.3 kW |
ENGINE DETAIL
The Wallis 20-30 tractor features a robust 4-cylinder, liquid-cooled gasoline engine with a displacement of 346 ci (5.7 L), beneficial for reliable power output at 1050 RPM, making it suitable for moderate agricultural tasks. The hand-crank starter may pose challenges in terms of ease of use, especially in cold weather or for operators unfamiliar with vintage machinery. Despite its limitations, the tractor’s significant bore-stroke ratio provides ample torque for demanding applications, ideally suited for small-scale farming or vintage equipment enthusiasts.
| Description |
Wallis/gasoline/4-cylinder/liquid-cooled |
| Displacement |
346 ci/5.7 L |
| Bore/Stroke |
4.375x5.75 inches/111 x 146 mm |
| Rated RPM |
1050 |
| Starter type |
hand-crank |
WALLIS 20-30 ENGINE
The Wallis 20-30 tractor, equipped with a robust 5.7L 4-cylinder gasoline engine, offers a balance of power suitable for a variety of farm tasks. Its 20-gallon fuel tank, along with an auxiliary capacity of 1.75 gallons, ensures extended operation with reduced downtime for refueling; however, fuel efficiency should be monitored due to the potentially high demands of the engine. Optimal for moderate agricultural use, this tractor may face challenges in fuel consumption when operated at full capacity or over prolonged periods.
| Description |
Wallis 5.7L 4-cyl gasoline |
| Fuel tank |
20 gal/75.7 L |
| Aux. fuel |
1.75 gal/6.6 L |
TRANSMISSION
The Wallis 20-30 tractor features a conventional gear system with 2 forward and 1 reverse gear, limiting its versatility in varied terrain. The dry disc clutch provides efficient engagement and disengagement but may experience wear under heavy load or prolonged use. This configuration suits small-scale agricultural tasks but may struggle in applications requiring frequent directional changes or higher power demands.
| Type |
gear |
| Gears |
2 forward and 1 reverse |
| Clutch |
dry disc |
MECHANICAL
The Wallis 20-30 tractor features a 4x2 2WD chassis, making it suitable for lighter agricultural tasks on even terrain but potentially limiting traction in adverse conditions. With a manual steering system and an open operator station, operators may experience more direct feedback but limited weather protection and comfort. The 2-speed gear transmission facilitates basic speed control, although it may lack the versatility of modern multi-speed transmissions for varied applications.
| Chassis |
4x2 2WD |
| Steering |
manual |
| Cab |
Open operator station. |
| Transmission |
2-speed gear |
WALLIS 20-30 TIRES
The Wallis 20-30 tractor features robust 48x12 steel rear wheels, enhancing stability and traction during field operations. While steel wheels provide durability, they can lead to increased soil compaction and reduced floatation on soft ground. This tractor is ideal for heavy-duty tasks in firmer soil conditions, but operators should consider tire options for softer terrains to minimize adverse effects.
DIMENSIONS
| Wheelbase |
84 inches/213 cm |
| Length |
131.5 inches/334 cm |
| Height |
55 inches/139 cm |
| Weight |
4,136 lbs/1876 kg |
DIMENSIONS & TIRES
The Wallis 20-30 tractor features a relatively short wheelbase of 84 inches (213 cm), which enhances maneuverability in tight spaces but may compromise stability on rough terrain. Weighing 4,136 lbs (1,876 kg) and equipped with rear tires sized 48x12, it offers substantial traction for fieldwork, making it suitable for small to medium agricultural tasks. However, its weight could pose challenges for transport over soft ground where ground pressure is a concern.
| Wheelbase |
84 inches/213 cm |
| Weight |
4,136 lbs/1876 kg |
| Rear tire |
48x12 |
BELT PULLEY
| Diameter |
19 inches/48 cm |
| Width |
7 inches/17 cm |
| RPM |
475 |
