| Manufacturer | Advance-Rumely |
| Price | - |
| Model | OilPull L 15/25 |
| Equipment Type | Standard-Tread Tractors |
| Factory | La Porte, Indiana |
NEBRASKA TRACTOR TEST 112
| Description | Kerosene 3-speed 2WD/March 29, 1925/ - April 16, 1925/Link: Nebraska Tractor Test 112 file/Drawbar performance/Gear 1 used for power test./Gear 2 used for pull test. |
| Belt power (max) | 30.52 hp/22.8 kW |
| Belt fuel use (max) | 3.6 gal/hour/13.6 l/hour |
| Max power | 19.34 hp/14.4 kW |
| Max pull | 3327 lbs/1509 kg |
ADVANCE-RUMELY OILPULL L 15/25 POWER
| Drawbar (claimed) | 15 hp/11.2 kW |
| Belt (claimed) | 25 hp/18.6 kW |
| Drawbar (tested) | 19.34 hp/14.4 kW |
| Belt (tested) | 30.52 hp/22.8 kW |
ENGINE DETAIL
The Advance-Rumely OilPull L 15/25 boasts a robust 371.5 ci (6.1 L) kerosene engine, optimized for low-speed torque with a long stroke (7.00 inches) providing significant pulling power, making it ideal for heavy agricultural applications. Its unique 2-cylinder design, coupled with a low rated RPM of 755, enhances fuel efficiency while promoting durability in continuous operation. However, the liquid cooling system demands maintenance for optimal performance, particularly in high-temperature scenarios, highlighting the importance of coolant level management (40 qts capacity).
| Description | Rumley/kerosene/2-cylinder/liquid-cooled horizontal |
| Displacement | 371.5 ci/6.1 L |
| Bore/Stroke | 5.8125x7.00 inches/148 x 178 mm |
| Rated RPM | 755 |
| Coolant capacity | 40 qts/37.9 L |
ADVANCE-RUMELY OILPULL L 15/25 ENGINE
The Advance-Rumely OilPull L 15/25 features a 6.1L two-cylinder kerosene engine, enabling efficient fuel usage, particularly in agricultural environments that favor heavier fuels over gasoline. With an 18.25-gallon fuel tank and a 1.25-gallon auxiliary tank, it offers significant operational range but may present challenges in weight distribution and maneuverability due to its fuel capacity. Ideal for extensive field work, its unique design also suggests potential maintenance considerations, especially regarding the kerosene system, which may require specialized knowledge.
| Description | Rumley 6.1L 2-cyl kerosene |
| Fuel tank | 18.25 gal/69.1 L |
| Aux. fuel | 1.25 gal/4.7 L |
TRANSMISSION
The Advance-Rumely OilPull L 15/25 features a simple gear transmission with 3 forward speeds and 1 reverse, providing adequate versatility for various field applications, though limited gear options may restrict operational efficiency in diverse conditions. The dry disc clutch offers reliable engagement and durability but may require more maintenance compared to wet clutches, especially under heavy loads. This tractor is suited for tasks that demand consistent power at lower speeds, making it ideal for plowing and heavy-duty hauling scenarios.
| Type | gear |
| Gears | 3 forward and 1 reverse |
| Clutch | dry disc |
MECHANICAL
The Advance-Rumely OilPull L 15/25 features a 4x2 2WD chassis with a mechanical rear differential lock, enhancing traction in challenging conditions but may limit performance on steep inclines compared to 4WD models. Its manual steering system provides simplicity and reliability, although it may require more effort during prolonged operation. The 3-speed transmission allows for adaptability to various tasks, but the limited gear range may restrict speed options for larger fields or transport.
| Chassis | 4x2 2WD |
| Differential lock | mechanical rear |
| Steering | manual |
| Cab | Open operator station. |
| Transmission | 3-speed gear |
ADVANCE-RUMELY OILPULL L 15/25 TIRES
The Advance-Rumely OilPull L 15/25 tractor features a robust steel wheel configuration, with a front tire size of 30x6 inches and a rear tire size of 44x12 inches, optimizing traction for agricultural tasks. Its design inherently benefits from low speed torque delivery, ideal for plowing and heavy tillage; however, the steel wheels may pose challenges on softer terrain due to reduced flotation. This tractor's performance is well-suited for mid-20th-century farming practices, particularly in loamy or compacted soils where durability and high pulling power are paramount.
| Ag front | 30x6 (steel) |
| Ag rear | 44x12 (steel) |
DIMENSIONS
| Length | 136 inches/345 cm |
| Width | 55.75 inches/141 cm |
| Height | 90.5 inches/229 cm |
| Weight | 5,900 lbs/2676 kg |
DIMENSIONS & TIRES
The Advance-Rumely OilPull L 15/25, weighing 5,900 lbs (2676 kg), is notable for its robust construction and traction capabilities, enhanced by rear tires measuring 44x12 inches which provide significant ground contact for better stability in various terrains. A potential challenge is its front tire specification of 30x6, which may limit maneuverability in tight spaces or uneven landscapes. Ideal for farming applications on larger fields, the tractor’s balance of weight and tire dimensions offers advantages in pulling power while maintaining reasonable ground pressure.
| Weight | 5,900 lbs/2676 kg |
| Front tire | 30x6 |
| Rear tire | 44x12 |
OILPULL L 15/25 SERIAL NUMBERS
| 1924 | 1 |
| 1925 | 11 |
| 1926 | 1607 |
| 1927 | 4214 |