| Manufacturer | Rumely |
| Price | - |
| Model | OilPull G 20/40 |
| Equipment Type | Standard-Tread Tractors |
| Factory | La Porte, Indianam USA |
NEBRASKA TRACTOR TEST 11
| Description | Kerosene 2-speed 2WD/May 6 - 22, 1920/Link: Nebraska Tractor Test 11 file/Drawbar performance |
| Belt power (max) | 46.19 hp/34.4 kW |
| Belt fuel use (max) | 5.7 gal/hour/21.6 l/hour |
| Max power | 30.07 hp/22.4 kW |
| Max pull | 6365 lbs/2887 kg |
ADVANCE-RUMELY OILPULL G 20/40 POWER
| Drawbar (claimed) | 20 hp/14.9 kW |
| Belt (claimed) | 40 hp/29.8 kW |
| Drawbar (tested) | 30.07 hp/22.4 kW |
| Belt (tested) | 46.19 hp/34.4 kW |
ENGINE DETAIL
The Rumely OilPull G 20/40 features a patented kerosene engine design with a significant 1005.3 ci displacement, enabling high torque output at low RPMs (450), which is ideal for heavy-duty agricultural applications. Its 2-cylinder, horizontal opposed configuration facilitates smoother operation and better balance, while the 70-quart coolant capacity ensures efficient thermal management during prolonged use. However, the large bore and stroke dimensions (8x10 inches) may lead to increased wear under high-stress scenarios, requiring regular maintenance and monitoring to ensure optimal performance.
| Description | Rumley/kerosene/2-cylinder/liquid-cooled horizontal opposed |
| Displacement | 1005.3 ci/16.5 L |
| Bore/Stroke | 8.00x10.00 inches/203 x 254 mm |
| Rated RPM | 450 |
| Coolant capacity | 70 qts/66.2 L |
ADVANCE-RUMELY OILPULL G 20/40 ENGINE
The Rumely OilPull G 20/40 tractor features a robust 16.5L 2-cylinder kerosene engine, optimized for torque and efficiency during heavy agricultural tasks. With a substantial 41-gallon fuel tank, it ensures extended operational capacity, but the relatively small auxiliary fuel tank of 1 gallon may necessitate frequent refueling for auxiliary tasks. Its design is advantageous for farmers requiring reliable power for plowing or transport, though the kerosene fuel type requires careful handling and management of fuel costs.
| Description | Rumley 16.5L 2-cyl kerosene |
| Fuel tank | 41 gal/155.2 L |
| Aux. fuel | 1 gal/3.8 L |
TRANSMISSION
The Rumely OilPull G 20/40 tractor features a sliding gear transmission with 2 forward and 1 reverse gears, allowing for efficient power management at low speeds—ideal for heavy plowing and pulling applications. Its simple gear configuration can be an advantage for operators seeking ease of use; however, the limited gear options may challenge those requiring versatile speed adjustments in varying terrain. In scenarios where high torque is necessary, this tractor’s design optimally leverages its horsepower, but operators must be mindful of gear selection for optimal performance.
| Type | gear |
| Gears | 2 forward and 1 reverse |
MECHANICAL
The Rumely OilPull G 20/40 features a 4x2 2WD chassis, which offers decent traction for basic agricultural tasks but may struggle in adverse soil conditions compared to 4WD tractors. The canopy over the open platform enhances operator comfort but offers limited protection against elements, which could affect long-term usability. With a 2-speed gear transmission, it provides versatility for both low-speed plowing and higher-speed transport, but the lack of additional gear ratios may limit efficiency in specific applications.
| Chassis | 4x2 2WD |
| Cab | Canopy over open platform. |
| Transmission | 2-speed gear |
ADVANCE-RUMELY OILPULL G 20/40 TIRES
The Rumely OilPull G 20/40 features a distinctive dual-steam engine with a power output of 20-40 horsepower, providing substantial torque, ideal for heavy-duty agricultural tasks. Its front steel wheels (44x8) offer excellent traction, while the larger rear wheels (64x20) enhance stability and flotation in varied soil conditions. However, the steel construction may result in limited ground protection and can lead to soil compaction, necessitating careful management during operation in softer terrains.
| Ag front | 44x8 steel |
| Ag rear | 64x20 steel |
DIMENSIONS
| Length | 175 inches/444 cm |
| Width | 89 inches/226 cm |
| Height | 108 inches/274 cm |
| Weight | 12,880 lbs/5842 kg |
DIMENSIONS & TIRES
The Rumely OilPull G 20/40, weighing 12,880 lbs (5,842 kg), features large rear tires (64x20) that provide excellent traction, particularly in plowing and heavy-duty operations. However, the relatively narrow front tires (44x8) may lead to stability challenges on uneven terrain. This model is well-suited for agricultural tasks requiring robust power delivery, though users should be cautious about potential tire wear from high loads.
| Weight | 12,880 lbs/5842 kg |
| Front tire | 44x8 |
| Rear tire | 64x20 |
OILPULL G 20/40 SERIAL NUMBERS
| 1918 | 10425 |
| 1919 | 10751 |
| 1920 | G741 |
| 1921 | G1728 |
| 1922 | G2242 |
| 1923 | G2690 |
| 1924 | G3559 |