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Engine:
Gibson Standard
Power:
40 HP (Engine) / HP (PTO)
Fuel Type:
Diesel
Production:
1948 - 1952
| Overview | |
|---|---|
| Summary | x1948 - 1952 Row-Crop tractor |
| Production | |
|---|---|
| Manufacturer | Gibson |
| Summary | Row-Crop tractor / Built in Longmont, Colorado, USA |
| Variants | |
|---|---|
| I | tricycle-front |
| IFA | adjustable wide-front |
| IFS | standard front |
| Mechanical | |
|---|---|
| Summary | Two-wheel drive |
| Final drives | bull gear |
| Summary | Manual steering / Mechanical band brakes / Open operator station. |
| Belt Pulley | |
|---|---|
| Diameter | 9.2 inches 23 cm |
| Width | 7.5 inches 19 cm |
| RPM | 1487 |
| Speed | 3539 ft/min 1078.69 meters/min |
| References | |
|---|---|
| Summary | / Gibson Tractors - Durability, lower operating costs, plus extra power. published in 1948 |
| Engine Detail | |
|---|---|
| Summary | Hercules ZXD / gasoline / 6-cylinder / liquid-cooled |
| Displacement | 236.7 ci 3.9 L |
| Bore/Stroke | 3.4375x4.125 inches 87 x 105 mm |
| Air cleaner | oil bath |
| Compression | 6.71:1 |
| Rated RPM | 1800 |
| Starter volts | 6 |
| Coolant capacity | 17 qts 16.1 L |
| Transmission | |
|---|---|
| Type | gear |
| Gears | 4 forward and 1 reverse |
| Clutch | 254mm dry disc |
| Gibson I Tires | |
|---|---|
| Ag front | 5.50-16 |
| Ag rear | 10-38 |
| Ag rear | 11-38 |
| 12-38 | |
| Dimensions | |
|---|---|
| Wheelbase | 94 inches 238 cm |
| Length | 127.25 inches 323 cm |
| Height | 67 inches 170 cm |
| Ground clearance | 25 inches 63 cm |
| Rear tread | 49 to 90 inches 124 to 228 cm |
| Gibson I Weight | |
|---|---|
| Shipping | 4000 lbs 1814 kg |
| Operating | 4512 lbs 2046 kg |
| Ballasted | 7495 lbs 3399 kg |
| Nebraska Tractor Test 408 | |
|---|---|
| Summary | Gasoline 4-speed 2WD May 8 - 12, 1949 Link: Nebraska Tractor Test 408 file |
| Belt power (max) | 41.03 hp 30.6 kW |
| Belt fuel use (max) | 4.2 gal/hour 15.9 l/hour |
| Summary | PTO performance |
| Power at rated engine speed | 36.82 hp 27.5 kW |
| Fuel use | 3.6 gal/hour 13.6 l/hour |
| Summary | Drawbar performance |
| Max power | 29.1 hp 21.7 kW |
| Fuel use | 3.2 gal/hour 12.1 l/hour |
| Summary | Gear 3 used for power test. |
| Max pull | 4676 lbs 2121 kg |
| Summary | Gear 2 used for pull test. |
Last Database Update: 6/22/2025