This page provides a detailed comparison of the specifications for the Hart-Parr Old Reliable 30-60 and the Massey-Harris 81.
| Hart-Parr Old Reliable 30-60 | Massey-Harris 81 | |
|---|---|---|
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| Engine | ||
| Engine Manufacturer | Hart-Parr | Continental |
| Engine Model | - | F124 |
| Engine Cooling Type | Liquid-cooled | Liquid-cooled |
| Engine Fuel Type | Kerosene | Gasoline |
| Engine Induction Type | Natural | Naturally Aspirated |
| Engine Cylinders | 2 | 4 |
| Engine Displacement Value | 2356 ci (38.6 L) | 124 ci (2.0 L) |
| Engine Rated Rpm | 300 | 1500 |
| Transmission | ||
| Transmission Type | Gear | Unsynchronized gear |
| Transmission Forward Gears | 1 | 4 |
| Transmission Reverse Gears | 1 | 1 |
| Dimensions | ||
| Length Value | 200 | 119 |
| Width Value | 106 | - |
| Operating Weight Value | 20100 lb (9117 kg) | 2895 lb (1313 kg) |
| Miscellaneous | ||
| Chassis | 4x2 | 4x2 2WD |
| Drive Type | 2WD | 2WD |
| Front Tire Type | - | - |
| Rear Tire Type | - | - |
| Starter Type | - | Electric Starter |
