This page provides a detailed comparison of the specifications for the Hart-Parr 18-28 and the Hart-Parr Old Reliable 30-60.
| Hart-Parr 18-28 | Hart-Parr Old Reliable 30-60 | |
|---|---|---|
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| Engine | ||
| Engine Manufacturer | Oliver | Hart-Parr |
| Engine Cooling Type | Liquid-cooled | Liquid-cooled |
| Engine Fuel Type | Kerosene | Kerosene |
| Engine Induction Type | Naturally Aspirated | Natural |
| Engine Cylinders | 4 | 2 |
| Engine Displacement Value | 281 ci (4.6 L) | 2356 ci (38.6 L) |
| Engine Rated Rpm | - | 300 |
| Transmission | ||
| Transmission Type | Gear | Gear |
| Transmission Forward Gears | 3 | 1 |
| Transmission Reverse Gears | 1 | 1 |
| Dimensions | ||
| Length Value | 112 | 200 |
| Width Value | 61 | 106 |
| Operating Weight Value | 4165 lb (1889 kg) | 20100 lb (9117 kg) |
| Miscellaneous | ||
| Chassis | - | 4x2 |
| Drive Type | - | 2WD |
| Front Tire Type | - | - |
| Rear Tire Type | - | - |
