| Manufacturer | Wallis |
| Price | - |
| Model | 12-20 |
| Equipment Type | Standard-Tread Tractors |
| Factory | Racine, Wisconsin, USA |
NEBRASKA TRACTOR TEST 164 2
| Description | Gasoline 3-speed 2WD/June 18 - 27, 1929/Link: Nebraska Tractor Test 164 file/Drawbar performance |
| Belt power (max) | 24.16 hp/18.0 kW |
| Belt fuel use (max) | 2.5 gal/hour/9.5 l/hour |
| Max power | 18.07 hp/13.5 kW |
| Max pull | 3,018 lbs/1368 kg |
WALLIS 12-20 POWER
| Drawbar (claimed) | 12 hp/8.9 kW |
| Belt (claimed) | 20 hp/14.9 kW |
| Plows | 2 |
| Drawbar (tested) | 18.07 hp/13.5 kW |
| Belt (tested) | 24.16 hp/18.0 kW |
ENGINE DETAIL
The Wallis 12-20 tractor features a 4-cylinder gasoline engine with a displacement of 248 ci (4.1 L) and an impressive bore/stroke ratio of 3.875x5.25 inches, which may enhance torque delivery for agricultural tasks. Operating at a rated RPM of 1000 is advantageous for demanding low-speed applications but could limit maximum power output in high-demand scenarios. The hand-crank starter, while historically significant, presents challenges for ease of use and may require physical effort, potentially limiting accessibility for modern operators.
| Description | Wallis/gasoline/4-cylinder/liquid-cooled |
| Displacement | 248 ci/4.1 L |
| Bore/Stroke | 3.875x5.25 inches/98 x 133 mm |
| Rated RPM | 1000 |
| Starter type | hand-crank |
WALLIS 12-20 ENGINE
The Wallis 12-20 tractor is powered by a 4.1L 4-cylinder gasoline engine, which offers a robust power-to-weight ratio suitable for medium-duty agricultural tasks. Its simple design facilitates ease of maintenance, although the gasoline engine may present challenges with fuel economy compared to diesel alternatives. Ideal for smaller farms or vintage machinery enthusiasts, this tractor provides versatility but may lack the torque necessary for heavy towing applications.
| Description | Wallis 4.1L 4-cyl gasoline |
TRANSMISSION
The Wallis 12-20 tractor features a basic [-|-] gear transmission with 3 forward and 1 reverse gear, making it suitable for simpler agricultural tasks but limiting operational versatility compared to multi-speed alternatives. The dry disc clutch provides reliable engagement but may require more frequent maintenance and replacements under heavy use conditions. Its straightforward setup is advantageous for farmers seeking ease of operation, though the limited gearing could present challenges in varied terrain or demanding workloads.
| Type | gear |
| Gears | 3 forward and 1 reverse |
| Clutch | dry disc |
MECHANICAL
The Wallis 12-20 tractor features a 4x2 two-wheel drive (2WD) chassis, providing less traction in challenging terrains compared to 4WD models, which may limit its versatility in muddy or hilly conditions. The manual steering system offers simplicity and reliability, but it may require more effort during tight maneuvers. With a 3-speed transmission, the tractor is suited for straightforward agricultural tasks, although it may struggle with high-speed operations or in varied terrain without additional gear options.
| Chassis | 4x2 2WD |
| Steering | manual |
| Transmission | 3-speed gear |
WALLIS 12-20 TIRES
The Wallis 12-20 tractor features robust steel construction for both front and rear wheels, with a front tire size of 28x5 and a rear of 44x10, enhancing durability and traction in agricultural applications. The larger rear tires provide improved weight distribution and stability, ideal for plowing or heavy-duty tasks. However, the all-steel design may result in a harsher ride and limited maneuverability on softer ground or uneven terrain.
| Ag front | 28x5 (steel) |
| Ag rear | 44x10 (steel) |
DIMENSIONS
| Wheelbase | 78 inches/198 cm |
| Width | 55 inches/139 cm |
| Height | 51 inches/129 cm |
| Weight | 3,455 lbs/1567 kg |
DIMENSIONS & TIRES
The Wallis 12-20 tractor features a 78-inch wheelbase providing a compact turning radius, which enhances maneuverability in tight spaces. Weighing 3,455 lbs, it delivers substantial traction but may pose challenges on softer ground due to potential sinking. With front tires sized at 28x5 and rear tires at 44x10, this configuration supports better load distribution, improving stability during field operations.
| Wheelbase | 78 inches/198 cm |
| Weight | 3,455 lbs/1567 kg |
| Front tire | 28x5 |
| Rear tire | 44x10 |
BELT PULLEY
| Diameter | 17 inches/43 cm |
| Width | 6 inches/15 cm |
| RPM | 540 |
| Speed | 2,400 ft/min/731.52 meters/min |