| Manufacturer | Rumely |
| Price | 761(USD) |
| Model | OilPull R 25/45 |
| Equipment Type | Standard-Tread Tractors |
| Factory | La Porte, Indiana, USA |
NEBRASKA TRACTOR TEST 116
| Description | Kerosene 3-speed 2WD July 7 - 14, 1925 Link: Nebraska Tractor Test 116 file Drawbar performance Gear 2 used for power test Gear 1 used for pull test |
| Belt power (max) | 50.57 hp / 37.7 kW |
| Max power | 35.54 hp / 26.5 kW |
| Max pull | 6321 lbs / 2867 kg |
ADVANCE-RUMELY OILPULL R 25/45 POWER
| Drawbar (claimed) | 25 hp / 18.6 kW |
| Belt (claimed) | 45 hp / 33.6 kW |
| Drawbar (tested) | 35.54 hp / 26.5 kW |
| Belt (tested) | 50.57 hp / 37.7 kW |
ENGINE DETAIL
The Rumely OilPull R 25/45 features a robust 2-cylinder kerosene engine with a displacement of 910.8 ci, providing substantial torque for agricultural tasks. With a bore and stroke of 7.8125x9.50 inches, it is optimized for lower RPM operation at 540, allowing for efficient operation in fieldwork. The large coolant capacity of 92 quarts ensures effective thermal management during extended use, although the engine’s size may pose challenges in maneuverability and transport.
| Description | Rumley kerosene 2-cylinder liquid-cooled horizontal |
| Displacement | 910.8 ci / 14.9 L |
| Bore/Stroke | 7.8125x9.50 inches / 198 x 241 mm |
| Rated RPM | 540 |
| Coolant capacity | 92 qts / 87.1 L |
ADVANCE-RUMELY OILPULL R 25/45 ENGINE
The Rumely OilPull R 25/45 features a robust 14.9L 2-cylinder kerosene engine, delivering impressive torque suitable for plowing and heavy tillage tasks. With a 31-gallon fuel tank and an auxiliary 1.25-gallon reserve, it offers extended operational range but requires careful monitoring of fuel consumption due to the specific fuel type. Optimal for agricultural scenarios where kerosene is abundant, its unique fuel requirement may pose challenges in regions where kerosene availability is limited.
| Description | Rumley 14.9L 2-cyl kerosene |
| Fuel tank | 31 gal / 117.3 L |
| Aux. fuel | 1.25 gal / 4.7 L |
TRANSMISSION
The Rumely OilPull R 25/45 features a gear transmission with 3 forward and 1 reverse gear, facilitating versatile operation in the field. This limited gear range may challenge maneuverability in steep or tight areas, but the system can efficiently deliver power for heavy tilling or hauling tasks. Overall, its robust construction favors durability in rugged conditions, making it ideal for extensive agricultural operations.
| Type | gear |
| Gears | 3 forward and 1 reverse |
MECHANICAL
The Rumely OilPull R 25/45 features a 4x2 2WD chassis, which provides good maneuverability but may struggle with traction in wet or uneven terrain. Its open operator station enhances operator comfort and visibility, though it lacks protection from harsh weather. The 3-speed gear transmission offers simplicity in operation, but may limit speed versatility compared to modern multi-speed systems, making it best suited for slow-paced agricultural tasks.
| Chassis | 4x2 2WD |
| Cab | Open operator station |
| Transmission | 3-speed gear |
ADVANCE-RUMELY OILPULL R 25/45 TIRES
The Rumely OilPull R 25/45 features a robust steel tire configuration with 38.5x8 inches in the front and 57.5x18 inches in the rear, providing excellent traction and stability on uneven terrains. The combination of front and rear tire sizes facilitates a balanced weight distribution, which is advantageous for plowing and heavy-duty fieldwork. However, the steel construction may lead to a harsher ride and increased soil compaction, highlighting the need for careful operation in sensitive agricultural environments.
| Ag front | 38.5x8 steel |
| Ag rear | 57.5x18 steel |
DIMENSIONS
| Length | 167 inches / 424 cm |
| Width | 82 inches / 208 cm |
| Height | 107 inches / 271 cm |
| Weight | 11750 lbs / 5329 kg |
DIMENSIONS & TIRES
The Rumely OilPull R 25/45, weighing 11,750 lbs (5,329 kg), features large rear tires (57.5x18) that enhance traction and stability, particularly in heavy fieldwork scenarios. However, its lighter front tires (38.5x8) may limit steering precision on uneven terrain, which could be a challenge in operations requiring intricate maneuvering. Overall, this tractor is well-suited for heavy pulling tasks but might require additional consideration for front-end weight distribution to optimize performance.
| Weight | 11750 lbs / 5329 kg |
| Front tire | 38.5x8 |
| Rear tire | 57.5x18 |
OILPULL R 25/45 SERIAL NUMBERS
| 1924 | 1 |
| 1925 | 2 |
| 1926 | 139 |
| 1927 | 648 |