| Manufacturer | Advance-Rumely |
| Price | - |
| 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 Advance-Rumely OilPull R 25/45 features a robust 2-cylinder kerosene engine with a substantial displacement of 910.8 ci (14.9 L), providing significant torque at low RPM (540) for heavy-duty agricultural tasks. Its large bore and stroke (7.8125 x 9.50 inches) enable enhanced power generation and fuel efficiency, though the liquid cooling system with a capacity of 92 quarts (87.1 L) requires regular maintenance to prevent overheating. The potential challenge lies in its weight and size, which may limit maneuverability in certain field conditions, making this tractor ideal for stationary operations and expansive farmland.
| 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 Advance-Rumely OilPull R 25/45 features a robust 14.9L 2-cylinder kerosene engine, which delivers high torque output ideal for heavy fieldwork, making it suitable for agricultural applications that require sustained power. With a fuel tank capacity of 31 gallons, it offers long operating hours between refuels, though its reliance on kerosene may necessitate careful fuel management and availability. However, the auxiliary fuel tank allows for additional versatility, accommodating various operational scenarios and reducing downtime during extensive tasks.
| Description | Rumley 14.9L 2-cyl kerosene |
| Fuel tank | 31 gal/117.3 L |
| Aux. fuel | 1.25 gal/4.7 L |
TRANSMISSION
The Advance-Rumely OilPull R 25/45 features a gear transmission system with 3 forward gears and 1 reverse gear, providing simplicity in operation but potentially limiting speed variation for diverse field conditions. This gear setup is advantageous for consistent torque delivery, ideal for heavy loads and slow-speed tasks like pulling implements. However, the limited gear range may pose challenges in navigating varied terrains or achieving higher speeds when needed.
| Type | gear |
| Gears | 3 forward and 1 reverse |
MECHANICAL
The Advance-Rumely OilPull R 25/45 features a 4x2 2WD chassis, which provides basic traction suited for flat terrains but may struggle in slippery conditions. Its open operator station offers good visibility and airflow, albeit with limited weather protection, potentially impacting operator comfort during adverse weather. The 3-speed gear transmission allows for variable speed applications, though it may reduce operational efficiency in demanding field conditions compared to more advanced multi-speed or hydrostatic systems.
| Chassis | 4x2 2WD |
| Cab | Open operator station. |
| Transmission | 3-speed gear |
ADVANCE-RUMELY OILPULL R 25/45 TIRES
The Advance-Rumely OilPull R 25/45 features steel wheels that provide excellent traction on firm soil but may lead to reduced mobility on softer terrains due to their weight. The front 38.5x8 wheels assist in steering stability, while the larger 57.5x18 rear wheels enhance pull strength for heavy loads. Ideal for applications requiring robust power and durability, challenges include potential soil compaction and limited speed over uneven ground.
| 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 Advance-Rumely OilPull R 25/45 weighs 11,750 lbs (5,329 kg), providing substantial stability for various field operations. Its large rear tires (57.5x18) enhance traction and weight distribution, making it suitable for heavy tillage scenarios. However, the narrow front tires (38.5x8) may limit steering control in soft or uneven terrain, posing a challenge in certain field conditions.
| 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 |
| Description | /how to read serial numbers.../ |