This page provides a detailed comparison of the specifications for the Cockshutt 40 and the Hart-Parr Old Reliable 30-60.
| Cockshutt 40 | Hart-Parr Old Reliable 30-60 | |
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| Engine | ||
| Engine Manufacturer | Buda | Hart-Parr |
| Engine Model | 3.8L 6-cyl | - |
| Engine Cooling Type | - | Liquid-cooled |
| Engine Fuel Type | Gasoline | Kerosene |
| Engine Induction Type | - | Natural |
| Engine Cylinders | 6 | 2 |
| Engine Displacement Value | 230 ci (3.8 L) | 2356 ci (38.6 L) |
| Engine Rated Rpm | 1658 | 300 |
| Engine Power Output Value | 40 hp (30.0 kW) | - |
| Transmission | ||
| Transmission Type | Gear | Gear |
| Transmission Forward Gears | 6 | 1 |
| Transmission Reverse Gears | 2 | 1 |
| Dimensions | ||
| Length Value | - | 200 |
| Width Value | - | 106 |
| Operating Weight Value | 5305 lb (2406 kg) | 20100 lb (9117 kg) |
| Miscellaneous | ||
| Chassis | 4x2 2WD | 4x2 |
| Drive Type | 2WD | 2WD |
| Starter Type | Electric | - |
