| Manufacturer |
J.I. Case |
| Price |
- |
| Model |
12-20 |
| Equipment Type |
Standard-Tread Tractors |
| Factory |
Racine, Wisconsin, USA |
NEBRASKA TRACTOR TEST 91
| Description |
Kerosene 2-speed 2WD/April 6 - 17, 1923/Link: Nebraska Tractor Test 91 file/Drawbar performance |
| Belt power (max) |
25.54 hp/19.0 kW |
| Belt fuel use (max) |
3.6 gal/hour/13.6 l/hour |
| Max power |
17.52 hp/13.1 kW |
| Max pull |
3,150 lbs/1428 kg |
J.I. CASE 12-20 POWER
| Drawbar (claimed) |
12 hp/8.9 kW |
| Belt (claimed) |
20 hp/14.9 kW |
| Plows |
2 |
| Drawbar (tested) |
17.52 hp/13.1 kW |
| Belt (tested) |
25.54 hp/19.0 kW |
ENGINE DETAIL
The J.I. Case 12-20 tractor, powered by a liquid-cooled 4-cylinder kerosene engine with a displacement of 267.3 ci (4.4 L), is designed for efficient low-speed operation at a rated RPM of 1050, ideal for heavy-duty agricultural tasks. Its bore and stroke configuration of 4.125 x 5.00 inches (105 x 127 mm) suggests a balance between torque and power, making it suitable for plowing and pulling. The hand-crank starter may present a challenge for ease of use, particularly in cold conditions, limiting operator convenience compared to modern electric starters.
| Description |
J.I. Case/kerosene/4-cylinder/liquid-cooled |
| Displacement |
267.3 ci/4.4 L |
| Bore/Stroke |
4.125x5.00 inches/105 x 127 mm |
| Rated RPM |
1050 |
| Starter type |
hand-crank |
J.I. CASE 12-20 ENGINE
The J.I. Case 12-20 tractor is powered by a 4.4L four-cylinder kerosene engine, offering efficient fuel utilization, particularly beneficial for agricultural applications where fuel costs are a concern. A notable advantage is its ability to run on kerosene, typically allowing for easier sourcing and lower prices than gasoline. However, challenges may include reduced power output compared to gasoline engines, necessitating careful load management to optimize performance during operations.
| Description |
J.I. Case 4.4L 4-cyl kerosene |
TRANSMISSION
The J.I. Case 12-20 tractor features a gear transmission with 2 forward and 1 reverse gear, providing straightforward control for basic agricultural tasks. The limited gear selection may restrict its versatility for varied terrain or heavy-duty work. However, its simplicity can be an advantage for ease of maintenance and operation, making it well-suited for smaller farms or vintage restoration projects.
| Transmission |
J.I. Case |
| Type |
gear |
| Gears |
2 forward and 1 reverse |
MECHANICAL
The J.I. Case 12-20 features a 4x2 2WD chassis, which enhances maneuverability but may limit traction in challenging terrain. Its manual steering offers simplicity and durability; however, it requires more operator effort compared to power steering systems, especially in tight turns. The 2-speed gear transmission provides versatility for varying workloads, but may limit speed options compared to modern multi-speed transmissions, impacting performance in high-speed applications.
| Chassis |
4x2 2WD |
| Steering |
manual |
| Cab |
Open operator station. |
| Transmission |
2-speed gear |
J.I. CASE 12-20 TIRES
The J.I. Case 12-20 tractor features agricultural rear tires sized 42x12 steel, providing enhanced traction and durability on various terrains. This configuration is advantageous for farm work, particularly in muddy or uneven fields, as the larger tire diameter increases ground contact and stability. However, the steel construction may result in a heavier overall weight, which could impact maneuverability in tighter spaces.
DIMENSIONS
| Wheelbase |
63 inches/160 cm |
| Length |
109 inches/276 cm |
| Width |
58 inches/147 cm |
| Height |
55.5 inches/140 cm |
| Weight |
4,232 lbs/1919 kg |
DIMENSIONS & TIRES
The J.I. Case 12-20 tractor features a compact wheelbase of 63 inches, providing maneuverability in tight spaces, advantageous for small farms or orchards. Weighing 4,232 lbs, it offers stability and traction but may require careful handling on uneven terrain to avoid tipping. The rear tire size of 42x12 indicates potential for good flotation and soil preservation, making it suitable for various agricultural tasks including plowing and tilling.
| Wheelbase |
63 inches/160 cm |
| Weight |
4,232 lbs/1919 kg |
| Rear tire |
42x12 |
BELT PULLEY
| Diameter |
14.5 inches/36 cm |
| Width |
6.375 inches/16 cm |
| RPM |
1050 |
