| Manufacturer | Advance-Rumely |
| Price | - |
| Model | OilPull K 12/20 |
| Equipment Type | Standard-Tread Tractors |
| Factory | La Porte, Indiana, USA |
NEBRASKA TRACTOR TEST 10
| Description | Kerosene 2-speed 2WD/May 1 - 21, 1920/Link: Nebraska Tractor Test 10 file/Drawbar performance |
| Belt power (max) | 25.87 hp/19.3 kW |
| Belt fuel use (max) | 3.0 gal/hour/11.4 l/hour |
| Max power | 15.02 hp/11.2 kW |
| Max pull | 2780 lbs/1261 kg |
ADVANCE-RUMELY OILPULL K 12/20 POWER
| Engine | 40 hp/29.8 kW |
| Drawbar (claimed) | 12 hp/8.9 kW |
| Belt (claimed) | 20 hp/14.9 kW |
| Drawbar (tested) | 15.02 hp/11.2 kW |
| Belt (tested) | 25.87 hp/19.3 kW |
ENGINE DETAIL
The Advance-Rumely OilPull K 12/20 tractor features a liquid-cooled, two-cylinder, horizontally opposed engine that highly optimizes torque delivery for heavy agricultural tasks. With a displacement of 452.4 ci (7.4 L) and a generous bore/stroke ratio, it provides a robust power output of 40 hp at a low operational RPM of 560, ideal for plowing and fieldwork. However, the use of kerosene as fuel may lead to challenges in fuel availability and combustion efficiency compared to modern diesel engines.
| Description | Rumley/kerosene/2-cylinder/liquid-cooled horizontal opposed |
| Displacement | 452.4 ci/7.4 L |
| Bore/Stroke | 6.00x8.00 inches/152 x 203 mm |
| Power | 40 hp/29.8 kW |
| Rated RPM | 560 |
ADVANCE-RUMELY OILPULL K 12/20 ENGINE
The Advance-Rumely OilPull K 12/20, with its 7.4L 2-cylinder kerosene engine, is designed for enhanced fuel efficiency and lower emissions compared to traditional gasoline engines. Its 23-gallon main fuel tank supports extended operation, making it suitable for long agricultural tasks, while the 1-gallon auxiliary tank serves as a backup for additional range. However, the reliance on kerosene may necessitate careful fuel management and availability, particularly in remote areas.
| Description | Rumley 7.4L 2-cyl kerosene |
| Fuel tank | 23 gal/87.1 L |
| Aux. fuel | 1 gal/3.8 L |
TRANSMISSION
The Advance-Rumely OilPull K 12/20 tractor features a simple gear type transmission with 2 forward and 1 reverse gear, which provides basic control and maneuverability, particularly suited for agricultural tasks. While this limited gearing may enhance ease of use for operators, it constrains speed variation and adaptability to varying field conditions, making it less efficient for larger scale operations compared to modern multi-gear tractors. This tractor is best utilized in smaller, less demanding applications where simplicity and reliability are prioritized over speed and versatility.
| Type | gear |
| Gears | 2 forward and 1 reverse |
MECHANICAL
The Advance-Rumely OilPull K 12/20 tractor features a 4x2 2WD chassis, which offers simplicity and lower maintenance but limits traction on uneven terrains. The open operator station enhances visibility and operator comfort, though it exposes the operator to weather conditions. Its 2-speed gear transmission provides flexibility in speed selection, suitable for various agricultural tasks, but may result in limited torque for heavy-duty applications.
| Chassis | 4x2 2WD |
| Cab | Open operator station. |
| Transmission | 2-speed gear |
ADVANCE-RUMELY OILPULL K 12/20 TIRES
The Advance-Rumely OilPull K 12/20 features a robust steel construction for both its 44x8 front and 64x20 rear agricultural wheels, providing enhanced durability and traction on various terrains. The 12 horsepower engine, coupled with its innovative oil engine design, allows for lower operational costs and reduced maintenance compared to traditional gasoline engines. However, its weight and limited maneuverability in tight spaces can be a disadvantage on smaller farms or in hilly conditions.
| Ag front | 44x8 steel |
| Ag rear | 64x20 steel |
DIMENSIONS
| Length | 132 inches/335 cm |
| Width | 64 inches/162 cm |
| Height | 75 inches/190 cm |
| Weight | 6,430 lbs/2916 kg |
DIMENSIONS & TIRES
The Advance-Rumely OilPull K 12/20 tractor, weighing 6,430 lbs (2,916 kg), features large rear tires (64x20) that enhance traction on uneven terrain, making it suitable for heavy-duty agricultural tasks. The combination of tire sizes promotes stability but can pose challenges in tight maneuvering or transport scenarios. Its design emphasizes durability and efficiency but may require careful calibration of the engine to optimize performance for varied field conditions.
| Weight | 6,430 lbs/2916 kg |
| Front tire | 44x8 |
| Rear tire | 64x20 |
OILPULL K 12/20 SERIAL NUMBERS
| 1918 | 1200 |
| 1919 | 12101 |
| 1920 | 13657 |
| 1921 | 17640 |
| 1922 | 18649 |
| 1923 | 19269 |
| 1924 | 20511 |