Overview
The Rock Island G2 15-25 is a 2-wheel drive farm tractor manufactured between 1929 and 1932 in Rock Island, Illinois. It is powered by a 5.3L 4-cylinder Waukesha liquid-cooled engine and features an open operator station with a 2-speed unsynchronized gear transmission.
Ideal Applications
Tested Power Output:
In Nebraska Tractor Test 158, the G2 achieved a maximum belt power of 35.69 hp and a maximum drawbar power of 25.50 hp using gasoline fuel.
Fuel Capacity and Engine Configuration:
The tractor is equipped with a 21-gallon main fuel tank and a 3.5-gallon auxiliary tank to support its 326 ci kerosene-burning engine rated at 1100 RPM.
Mechanical and Physical Specifications:
This standard-tread tractor weighs 4,200 lbs and utilizes manual steering with a transmission offering two forward gears and one reverse gear.
Production
| Description | Standard-tread tractor / Built in Rock Island, Illinois, USA |
|---|---|
| Manufacturer | Rock Island |
Engine
| Aux. fuel | 3.5 gal (13.2 L) |
|---|---|
| Engine type | Waukesha 5.3L 4-cyl kerosene |
| Fuel tank | 21 gal (79.5 L) |
| Bore/Stroke | 4.25x5.75 inches (108 x 146 mm) |
| Description | Waukesha / kerosene / 4-cylinder / liquid-cooled |
| Displacement | 326 ci (5.3 L) |
| Rated RPM | 1100 |
| Belt (claimed) | 25 hp (18.6 kW) |
| Belt (tested) | 35.69 hp (26.6 kW) |
| Drawbar (claimed) | 15 hp (11.2 kW) |
| Drawbar (tested) | 25.50 hp (19.0 kW) |
Transmission
| Gears | 2 forward and 1 reverse |
|---|---|
| Transmission type | 2-speed unsynchronized gear |
| Type | unsynchronized gear |
Mechanical
| Cab | Open operator station. |
|---|---|
| Drive type | Two-wheel drive |
| Steering | manual |
Dimensions & Tires
| Weight | 4,200 lbs (1905 kg) |
|---|---|
| Weight | 4,200 lbs (1905 kg) |
Links
| Description | G2 restoration site: / G2 at RIPC site: |
|---|
Nebraska Tractor Test 157
| Belt fuel use (max) | 3.6 gal/hour (13.6 l/hour) |
|---|---|
| Belt power (max) | 29.00 hp (21.6 kW) |
| Description | Kerosene 2-speed 2WDApril 24 - May 3, 1929Link: Nebraska Tractor Test 157 file / Drawbar performance |
| Max power | 22.08 hp (16.5 kW) |
| Max pull | 2,880 lbs (1306 kg) |
Nebraska Tractor Test 158
| Belt fuel use (max) | 3.9 gal/hour (14.8 l/hour) |
|---|---|
| Belt power (max) | 35.69 hp (26.6 kW) |
| Description | Gasoline 2-speed 2WDMay 4 - 8, 1929Link: Nebraska Tractor Test 158 file / Drawbar performance |
| Max power | 25.50 hp (19.0 kW) |
| Max pull | 3,549 lbs (1609 kg) |
Tractor Tests
| Description | NTTL 157: kerosene 2-speed 2WD / NTTL 158: gasoline 2-speed 2WD |
|---|