This page provides a detailed comparison of the specifications for the Hart-Parr 30 and the John Deere Unstyled D (1923-1939).
| Hart-Parr 30 | John Deere Unstyled D (1923-1939) | |
|---|---|---|
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| Engine | ||
| Engine Manufacturer | Hart-Parr | John Deere |
| Engine Model | - | Unstyled D |
| Engine Cooling Type | Liquid-cooled | Liquid-cooled |
| Engine Fuel Type | Gasoline/Kerosene | All-fuel |
| Engine Induction Type | Naturally Aspirated | Naturally aspirated |
| Engine Cylinders | 2 | 2 |
| Engine Displacement Value | 465 ci (7.6 L) | 501 ci (8.2 L) |
| Engine Rated Rpm | 750 | - |
| Engine Power Output Value | 30 hp (22.4 kW) | - |
| Transmission | ||
| Transmission Type | Gear | Unsynchronized gear |
| Transmission Forward Gears | 2 | 3 |
| Transmission Reverse Gears | 1 | 1 |
| Dimensions | ||
| Length Value | 141 | 129.9 |
| Width Value | 76 | 55.9 |
| Operating Weight Value | 5450 lb (2472 kg) | 5886 lb (2670 kg) |
| Miscellaneous | ||
| Chassis | 4x2 2WD | 4x2 2WD |
| Drive Type | 2WD | 2WD |
| Front Tire Type | - | - |
| Rear Tire Type | - | - |
| Hitch Category | - | III |
| Operator Station Type | - | Open |
| Starter Type | - | Electric |
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