| Manufacturer | Avery |
| Price | - |
| Model | 12-20 |
| Equipment Type | - |
| Factory | Peoria, Illinois |
NEBRASKA TRACTOR TEST 41
| Description | /July 1920/Drawbar performance |
| Belt power (max) | 24.3 hp/18.1 kW |
| Max power | 17.6 hp/13.1 kW |
| Max pull | 2,608 lbs/1182 kg |
AVERY 12-20 POWER
| Drawbar (claimed) | 12 hp/8.9 kW |
| Belt (claimed) | 20 hp/14.9 kW |
| Drawbar (tested) | 17.6 hp/13.1 kW |
| Belt (tested) | 24.3 hp/18.1 kW |
ENGINE DETAIL
The Avery 12-20 tractor features a liquid-cooled, 4-cylinder, kerosene engine with a substantial displacement of 360.8 ci (5.9 L), providing strong torque at low RPMs (800), which is beneficial for heavy-duty agricultural tasks. Its bore and stroke (4.375 x 6.00 inches) contribute to a balanced performance, but may also present challenges in terms of engine vibrations and wear over extended use. The coolant capacity of 44 quarts ensures effective thermal management, critical for maintaining optimal operating temperatures during prolonged workloads.
| Description | Avery/kerosene/4-cylinder/liquid-cooled horizontal opposed |
| Displacement | 360.8 ci/5.9 L |
| Bore/Stroke | 4.375x6.00 inches/111 x 152 mm |
| Rated RPM | 800 |
| Coolant capacity | 44 qts/41.6 L |
AVERY 12-20 ENGINE
The Avery 12-20 tractor features a robust 5.9L 4-cylinder kerosene engine, which provides reliable power while the dual fuel capacity (16 gallons main tank and 6 gallons auxiliary) ensures extended operational time before refueling. A potential advantage is the efficient combustion of kerosene, which can lead to lower operational costs compared to gasoline alternatives; however, the reliance on kerosene may present challenges in availability depending on the region. For optimal performance, it’s crucial to ensure that the engine is tuned for kerosene fuel to prevent issues related to combustion efficiency and power output.
| Description | Avery 5.9L 4-cyl kerosene |
| Fuel tank | 16 gal/60.6 L |
| Aux. fuel | 6 gal/22.7 L |
TRANSMISSION
The Avery 12-20 tractor features a simple 2-speed forward and 1-speed reverse transmission, offering basic maneuverability for light agricultural tasks. While the limited gearing may restrict speed and complex terrain handling, it can provide reliable performance for small-scale farming or maintenance operations. This simplicity can also lead to easier maintenance and lower operational costs in scenarios where advanced functionality isn't necessary.
| Gears | 2 forward and 1 reverse |
MECHANICAL
The Avery 12-20 tractor features a 4x2 2WD chassis, which offers good mobility on relatively flat terrains but may struggle in slippery or uneven conditions. Its 2-speed transmission allows for moderate operational versatility, suitable for light to medium agricultural tasks. However, the absence of a 4WD option may limit its overall traction and stability in challenging environments, making it less ideal for heavy-duty applications requiring enhanced maneuverability.
| Chassis | 4x2 2WD |
| Transmission | 2-speed |
AVERY 12-20 TIRES
The Avery 12-20 tractor features a robust front and rear axle configuration with 32-inch by 5-inch steel front wheels and 52-inch by 14-inch steel rear wheels, providing enhanced stability and load-bearing capabilities for agricultural tasks. The larger rear wheels contribute to increased traction and improved weight distribution, ideal for plowing or towing heavier implements. However, the all-steel wheel construction may limit flexibility on softer terrains, potentially leading to soil compaction issues in specific farming scenarios.
| Ag front | 32x5 steel |
| Ag rear | 52x14 steel |
DIMENSIONS
| Length | 130 inches/330 cm |
| Width | 56 inches/142 cm |
| Height | 78 inches/198 cm |
| Weight | 5,500 lbs/2494 kg |
DIMENSIONS & TIRES
The Avery 12-20 tractor, weighing 5,500 lbs (2,494 kg), offers a robust structure for various agricultural tasks, with a front tire size of 32x5 providing good maneuverability and a rear tire size of 52x14 contributing to enhanced traction and stability. The larger rear tires can minimize soil compaction, making it suitable for sensitive terrains. However, the weight distribution may affect handling on uneven ground, and operator experience is critical in maintaining balance during operation.
| Weight | 5,500 lbs/2494 kg |
| Front tire | 32x5 |
| Rear tire | 52x14 |