| Manufacturer | Advance-Rumely |
| Price | 2,400(USD) |
| Model | OilPull X 25/40 |
| Equipment Type | Standard-Tread Tractors |
| Factory | La Porte, Indiana, USA |
NEBRASKA TRACTOR TEST 143
| Description | Kerosene 3-speed 2WD October 6 - 13, 1927 Link: Nebraska Tractor Test 143 file Drawbar performance Gear 1 used for power test Gear 1 used for pull test |
| Belt power (max) | 50.26hp / 37.5kW |
| Belt fuel use (max) | 5.8gal/hour / 22.0l/hour |
| Max power | 38.66hp / 28.8kW |
| Max pull | 4787.5lbs / 2171kg |
ADVANCE-RUMELY OILPULL X 25/40 POWER
| Drawbar (claimed) | 25hp / 18.6kW |
| Belt (claimed) | 40hp / 29.8kW |
| Drawbar (tested) | 38.66hp / 28.8kW |
| Belt (tested) | 50.26hp / 37.5kW |
ENGINE DETAIL
The Advance-Rumely OilPull X 25/40 features a robust 2-cylinder kerosene engine with a significant displacement of 601.4 cubic inches, providing ample torque for heavy-duty tasks. Its dry air cleaner system can lead to better filtration at lower maintenance, though it may require regular checks under dusty conditions. Operating at a low rated RPM of 725 enhances fuel efficiency but may limit high-speed applications; therefore, it’s ideal for stationary or slow-moving operations like plowing and thrashing.
| Description | Rumley kerosene 2-cylinder liquid-cooled horizontal |
| Displacement | 601.4ci / 9.9L |
| Bore/Stroke | 6.8125x8.250inches / 173 x 210mm |
| Fuel system | carburetor |
| Air cleaner | dry |
| Rated RPM | 725 |
| Coolant capacity | 52qts / 49.2L |
ADVANCE-RUMELY OILPULL X 25/40 ENGINE
The Advance-Rumely OilPull X 25/40 tractor features a robust 9.9L two-cylinder kerosene engine, offering excellent torque for heavy-duty applications. With a fuel tank capacity of 25.75 gallons, it provides significant operational range, although the choice of kerosene may limit availability depending on region. The auxiliary fuel tank of 1.25 gallons allows for emergency reserves, enhancing operational reliability in remote farming scenarios.
| Description | Rumley 9.9L 2-cyl kerosene |
| Fuel tank | 25.75gal / 97.5L |
| Aux. fuel | 1.25gal / 4.7L |
TRANSMISSION
The Advance-Rumely OilPull X 25/40 tractor features a simple three-speed forward and one reverse gear configuration, optimizing power application for various field tasks. Its dry disc clutch offers reliable engagement, but it may result in more wear compared to hydraulic systems under heavy load scenarios. Ideal for vintage farming applications, this tractor balances ease of use with manageable performance challenges in demanding conditions.
| Type | gear |
| Gears | 3 forward and 1 reverse |
| Clutch | dry disc |
MECHANICAL
The Advance-Rumely OilPull X 25/40 features a 4x2 2WD chassis, which provides basic traction but limits performance on uneven terrain compared to 4WD options. The manual steering system, while straightforward, may require more physical effort, particularly in tight maneuvers. Its 3-speed gear transmission offers versatility in speed selection, but may lack the precision and efficiency of modern hydrostatic systems, impacting fuel efficiency and overall productivity during varied agricultural tasks.
| Chassis | 4x2 2WD |
| Steering | manual |
| Cab | Open operator station |
| Transmission | 3-speed gear |
ADVANCE-RUMELY OILPULL X 25/40 TIRES
The Advance-Rumely OilPull X 25/40 features robust steel wheels, with a narrower front (34x7) for agility and a wider rear (52x16) for improved traction and weight distribution. This configuration is advantageous for navigating varied terrain while maximizing plowing efficiency, yet the heavy steel construction may limit speed and maneuverability on softer surfaces. In scenarios involving heavy fieldwork, the enhanced rear traction can be a significant benefit, especially in challenging soil conditions.
| Ag front | 34x7 steel |
| Ag rear | 52x16 steel |
DIMENSIONS
| Length | 151inches / 383cm |
| Width | 72inches / 182cm |
| Height | 101inches / 256cm |
| Weight | 9,300lbs / 4218kg |
DIMENSIONS & TIRES
The Advance-Rumely OilPull X 25/40, weighing 9,300 lbs (4218 kg), showcases impressive stability due to its heavy frame, beneficial for traction in rugged agricultural terrains. Its large rear tires (52x16) enhance soil compaction management and improve grip, while the narrower front tires (34x7) provide maneuverability in tight spaces. However, the substantial weight may limit transport options and require adequate towing capacity for relocation.
| Weight | 9,300lbs / 4218kg |
| Front tire | 34x7 |
| Rear tire | 52x16 |
OILPULL X 25/40 SERIAL NUMBERS
| 1928 | 1 |
| 1929 | 2129 |
| 1930 | 3734 |
BELT PULLEY
| Diameter | 18.75inches / 47cm |
| Width | 8.5inches / 21cm |
| RPM | 725 |