| Manufacturer | Rock Island |
| Price | - |
| Model | F 18-35 |
| Equipment Type | Standard-Tread Tractors |
| Factory | Rock Island, Illinois, USA |
NEBRASKA TRACTOR TEST 144
| Description | Kerosene 2-speed 2WD/October 12 - 19, 1927/Link: Nebraska Tractor Test 144 file/Drawbar performance |
| Belt power (max) | 36.50 hp/27.2 kW |
| Belt fuel use (max) | 4.7 gal/hour/17.8 l/hour |
| Max power | 30.42 hp/22.7 kW |
| Max pull | 3,190 lbs/1446 kg |
ROCK ISLAND F 18-35 POWER
| Drawbar (claimed) | 18 hp/13.4 kW |
| Belt (claimed) | 35 hp/26.1 kW |
| Drawbar (tested) | 30.42 hp/22.7 kW |
| Belt (tested) | 36.50 hp/27.2 kW |
ENGINE DETAIL
The Rock Island F 18-35 tractor features a Buda 4-cylinder, liquid-cooled L-head engine, providing efficient operation with a displacement of 382 ci (6.3 L) for good torque at low RPMs (1100). Its large bore/stroke ratio (4.50x6.00 inches) indicates a design optimized for pulling rather than high-speed operation, making it suitable for agricultural tasks requiring steady power output. While the kerosene variation may offer cost-effective fuel options, it may require more extensive maintenance and fuel management compared to standard diesel engines.
| Description | Buda/kerosene/4-cylinder/liquid-cooled L-head |
| Displacement | 382 ci/6.3 L |
| Bore/Stroke | 4.50x6.00 inches/114 x 152 mm |
| Rated RPM | 1100 |
ROCK ISLAND F 18-35 ENGINE
The Rock Island F 18-35 tractor features a Buda 6.3L inline 4-cylinder kerosene engine, known for its robust torque output and efficiency in fuel consumption, which can be advantageous in extensive farming operations. However, kerosene engines may require additional starting procedures compared to gasoline engines, particularly in colder temperatures. This tractor is well-suited for medium to large-scale agricultural tasks, where consistent power and durability are critical.
| Description | Buda 6.3L 4-cyl kerosene |
TRANSMISSION
The Rock Island F 18-35 tractor features an unsynchronized gear transmission, which may result in a challenge when shifting between gears, requiring more skill from the operator. With only 2 forward and 1 reverse gear, its operational versatility is limited, making it suitable primarily for basic agricultural tasks rather than extensive fieldwork. Ideal scenarios include small-scale farming or tasks that do not demand rapid gear changes.
| Type | unsynchronized gear |
| Gears | 2 forward and 1 reverse |
MECHANICAL
The Rock Island F 18-35 tractor features a 4x2 2WD chassis, providing simplicity and lower maintenance but limiting traction in challenging terrains. Its manual steering allows for direct control, although it may require more effort during operation compared to power steering systems. The 2-speed unsynchronized gear transmission offers basic speed options, ideal for rural applications, but may not provide the smooth shifting preferred for larger farming operations.
| Chassis | 4x2 2WD |
| Steering | manual |
| Cab | Open operator station. |
| Transmission | 2-speed unsynchronized gear |
BELT PULLEY
| Diameter | 18 inches/45 cm |
| Width | 7.5 inches/19 cm |
| RPM | 660 |