Tractor · 1929Unverified
Rock Island G2 15-25
Rock Island G2 15-25 — Standard-tread tractor · 15 hp. Reference specifications; pending source verification.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
15 hp
Max power
16.5 kW
Weight
1905 kg
Hover a source tag to verify
Overview
ManufacturerRock IslandReference
Standard-tread tractorReference
Built in Rock Island, Illinois, USAReference
Two-wheel driveReference
SteeringmanualReference
Open operator station.Reference
Engine
Waukesha 5.3L 4-cyl keroseneReference
Fuel tank79.5 LReference
Aux. fuel13.2 LReference
Drawbar (claimed)11.2 kWReference
Belt (claimed)18.6 kWReference
Drawbar (tested)19.0 kWReference
Belt (tested)26.6 kWReference
WaukeshaReference
keroseneReference
4-cylinderReference
liquid-cooledReference
Displacement5.3 LReference
Bore/Stroke108 x 146 mmReference
Rated RPM1100Reference
Belt power (max)21.6 kWReference
Max power16.5 kWReference
Belt power (max)26.6 kWReference
Max power19.0 kWReference
Transmission
2-speed unsynchronized gearReference
Typeunsynchronized gearReference
Gears2 forward and 1 reverseReference
Dimensions
Weight1905 kgReference
Links
G2 restoration site:Reference
G2 at RIPC site:Reference
Test results
NTTL 157: kerosene 2-speed 2WDReference
NTTL 158: gasoline 2-speed 2WDReference
Kerosene 2-speed 2WDApril 24 - May 3, 1929Link: Nebraska Tractor Test 157 fileReference
Belt fuel use (max)13.6 l/hourReference
Drawbar performanceReference
Max pull1306 kgReference
Gasoline 2-speed 2WDMay 4 - 8, 1929Link: Nebraska Tractor Test 158 fileReference
Belt fuel use (max)14.8 l/hourReference
Max pull1609 kgReference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.