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Rock Island F 18-35 vs Rock Island G2 15-25
Verdict: Rock Island F 18-35 vs Rock Island G2 15-25
The Rock Island F 18-35 and the Rock Island G2 15-25 are both tractors — here is how they stack up on the figures that matter. Rock Island F 18-35 leads on rated power with 18 hp against 15 hp. Rock Island G2 15-25 is the newer design (1929 vs 1927). In short: choose the Rock Island F 18-35 for outright pulling power, or the Rock Island G2 15-25 if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.
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Fit & specs
Rock Island
62
Fit score
Best match
Clear
Rock Island
62
Fit score
Best match
Clear
Rated power
18 hp
15 hp
Confidence
40%
40%
Guide price
—
—
Overview
Manufacturer
Rock IslandReference
Rock IslandReference
Drawbar performanceReference
Gasoline 2-speed 2WDMay 4 - 8, 1929Link: Nebraska Tractor Test 158 fileReference
Steering
manualReference
manualReference
Engine
Drawbar (claimed)
13.4 kWReference
11.2 kWReference
Belt (claimed)
26.1 kWReference
18.6 kWReference
Drawbar (tested)
22.7 kWReference
19.0 kWReference
Belt (tested)
27.2 kWReference
26.6 kWReference
Displacement
6.3 LReference
5.3 LReference
Bore/Stroke
114 x 152 mmReference
108 x 146 mmReference
Rated RPM
1100Reference
1100Reference
Belt power (max)
27.2 kWReference
26.6 kWReference
Max power
22.7 kWReference
19.0 kWReference
Fuel tank
—
79.5 LReference
Aux. fuel
—
13.2 LReference
Transmission
Type
unsynchronized gearReference
unsynchronized gearReference
Gears
2 forward and 1 reverseReference
2 forward and 1 reverseReference
Links
Capacities
Diameter
45 cmReference
—
Width
19 cmReference
—
RPM
660Reference
—
Test results
Belt fuel use (max)
17.8 l/hourReference
14.8 l/hourReference
Max pull
1446 kgReference
1609 kgReference
Dimensions
Weight
—
1905 kgReference
Fit score weighs budget, operation size, crop match and data confidence against the details above. It’s guidance, not advice — always confirm with a dealer demo.