| Manufacturer | Wallis |
| Price | - |
| Model | OK 15-27 |
| Equipment Type | Standard-Tread Tractors |
| Factory | Racine, Wisconsin, USA |
NEBRASKA TRACTOR TEST 92
| Description | Gasoline 2-speed 2WD/April 26 - May 5, 1923/Drawbar performance |
| Belt power (max) | 28.60 hp/21.3 kW |
| Belt fuel use (max) | 3.5 gal/hour/13.2 l/hour |
| Max power | 18.15 hp/13.5 kW |
| Max pull | 2,590 lbs/1174 kg |
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 |
ENGINE DETAIL
The Wallis OK 15-27 tractor features a liquid-cooled 4-cylinder gasoline engine with a displacement of 326.3 ci (5.3 L), providing substantial torque for agricultural applications. Its bore and stroke of 4.25x5.75 inches optimize power output at a rated RPM of 1000, making it suitable for heavy-duty tasks. However, the hand-crank starter could pose challenges in cold weather or for operators unfamiliar with manual starting techniques.
| Description | Wallis/gasoline/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 |
WALLIS OK 15-27 ENGINE
The Wallis OK 15-27 is powered by a 5.3L 4-cylinder gasoline engine, offering a balance of power and torque suitable for various agricultural tasks. Its design provides good maneuverability and adaptability in different terrains; however, fuel consumption may be higher than comparable diesel engines, affecting operational cost efficiency. Ideal for small to medium farms needing reliable and versatile machinery, it may face challenges with fuel accessibility in remote areas.
| Description | Wallis 5.3L 4-cyl gasoline |
TRANSMISSION
The Wallis OK 15-27 tractor features a simple [-|-] gear transmission, providing only 2 forward gears and 1 reverse gear, which may limit flexibility in varied field conditions. This simplicity can aid in ease of operation and maintenance, making it suitable for smaller scale or specific farming tasks. However, the limited gear selection may pose challenges in applications requiring more precise speed control or varied terrain engagement.
| Type | gear |
| Gears | 2 forward and 1 reverse |
MECHANICAL
The Wallis OK 15-27 features a 4x2 two-wheel drive chassis, which offers simplicity and reduced maintenance compared to four-wheel drive systems, but may limit traction in adverse conditions. The manual steering allows for direct operator control, although it may require more effort in tight maneuvers. With a 2-speed gear transmission, the tractor provides basic operational versatility, but may not handle complex terrain as effectively as a multi-speed transmission.
| Chassis | 4x2 2WD |
| Steering | manual |
| Transmission | 2-speed gear |
WALLIS OK 15-27 TIRES
The Wallis OK 15-27 tractor features a robust tire arrangement with 30x8 steel front tires and 48x12 steel rear tires, providing excellent traction and stability on challenging terrains. The larger rear tires significantly enhance the tractor's load-bearing capacity and drawbar pull, making it suitable for heavy-duty agricultural tasks. However, the all-steel design increases overall weight, which may lead to soil compaction issues during prolonged use on softer ground.
| 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 |
DIMENSIONS & TIRES
The Wallis OK 15-27 tractor, with a weight of 3,630 lbs (1,646 kg), features a strong rear tire size of 48x12, which enhances traction and stability, making it suitable for heavy-duty agricultural tasks. The smaller front tire size of 30x8 could lead to challenges in managing steering and load distribution, especially on uneven terrain. This tractor is advantageous for tasks requiring significant power and stability but may require careful handling in tight spaces or rough fields due to its weight and tire configuration.
| Weight | 3,630 lbs/1646 kg |
| Front tire | 30x8 |
| Rear tire | 48x12 |
BELT PULLEY
| Diameter | 18.5 inches/46 cm |
| Width | 7 inches/17 cm |
| RPM | 475 |