Hart-Parr
Hart-Parr Row Crop 18-27
The Hart-Parr Row Crop 18-27 was produced from 1930 to 1935 by Hart-Parr, part of Oliver, in Charles City, Iowa, USA. It is a row-crop tractor initially featuring a single front wheel for the first two years, then switching to two front wheels in 1931. It is powered by an Oliver 4.6L 4-cylinder liquid-cooled kerosene engine. The tractor has a 3-speed gear transmission with 1 reverse gear, two-wheel drive with spur gear final drives, and manual steering. It has an open operator station. The tractor's drawbar power is claimed at 18 hp and belt power at 27 hp, with tested drawbar power at 18.10 hp and belt power at 29.72 hp. It can pull 2-3 14-inch plows. Dimensions include a length of 125 inches, width of 80 inches, height of 64 inches, and weight of 3500 lbs. Rear tread ranges from 60 to 74 inches. The belt pulley diameter is 14.5 inches with a width of 7.5 inches, running at 700 RPM and a speed of 2610 ft/min.
Power30 hp[B]
Founded1930 - 1935
Model18-27
Technical Specifications
Detailed specifications and technical data for Hart-Parr Row Crop 18-27
Power
| Plows | 2-3 (14-inch) |
|---|---|
| Belt (tested) | 29.72 hp (22.2 kW) |
| Belt (claimed) | 27 hp (20.1 kW) |
| Drawbar (tested) | 18.10 hp (13.5 kW) |
| Drawbar (claimed) | 18 hp (13.4 kW) |
Engine
| Cooling | liquid-cooled |
|---|---|
| Cylinders | 4-cylinder |
| Fuel type | kerosene |
| Bore/Stroke | 4.125x5.25 inches (105 x 133 mm) |
| Displacement | 280.6 ci (4.6 L) |
| Manufacturer | Oliver |
Variants
| 18-27 | row-crop |
|---|---|
| 18-28 | standard |
Dimensions
| Width | 80 inches (203 cm) |
|---|---|
| Height | 64 inches (162 cm) |
| Length | 125 inches (317 cm) |
| Weight | 3500 lbs (1587 kg) |
| Rear tread | 60 to 74 inches (152 to 187 cm) |
Mechanical
| Drive | Two-wheel drive |
|---|---|
| Steering | Manual steering |
| Final drives | spur gear |
| Operator station | Open operator station |
Production
| Type | Row-Crop tractor |
|---|---|
| Notes | Introduced in 1930, the Oliver Hart-Parr Row Crop featured a single front wheel during the first two production years. In 1931, the design changed to use two front wheels. |
| Built in | Charles City, Iowa, USA |
| Years produced | 1930 - 1935 |
Belt Pulley
| RPM | 700 |
|---|---|
| Speed | 2610 ft/min (795.53 meters/min) |
| Width | 7.5 inches (19 cm) |
| Diameter | 14.5 inches (36 cm) |
Transmission
| Type | gear |
|---|---|
| Gears | 3 forward and 1 reverse |
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