This page provides a detailed comparison of the specifications for the Hart-Parr Old Reliable 30-60 and the John Deere 7720.
| Hart-Parr Old Reliable 30-60 | John Deere 7720 | |
|---|---|---|
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| Engine | ||
| Engine Manufacturer | Hart-Parr | John Deere |
| Engine Model | - | 6.8 L 414.0 ci |
| Engine Cooling Type | Liquid-cooled | Liquid-cooled |
| Engine Fuel Type | Kerosene | Diesel |
| Engine Induction Type | Natural | Turbocharged intercooled |
| Engine Cylinders | 2 | 6 |
| Engine Displacement Value | 2356 ci (38.6 L) | 414 ci (6.8 L) |
| Engine Rated Rpm | 300 | 2100 |
| Engine Power Output Value | - | 182 hp (135.7 kW) |
| Transmission | ||
| Transmission Type | Gear | Partial power shift with hydraulic wet disc clutch |
| Transmission Forward Gears | 1 | 16 |
| Transmission Reverse Gears | 1 | 16 |
| Dimensions | ||
| Length Value | 200 | 212.2 |
| Width Value | 106 | 95.7 |
| Operating Weight Value | 20100 lb (9117 kg) | 15501 lb (7031 kg) |
| Miscellaneous | ||
| Chassis | 4x2 | 4x2 2WD |
| Drive Type | 2WD | - |
| Front Tire Type | - | - |
| Rear Tire Type | - | - |
| Hitch Type | - | Three-Point Hitch |
| Hitch Category | - | III/IIIN |
| Hitch Position | - | Rear |
| Hitch Capacity Value | - | 10050 lb (4559 kg) |
| Hydraulic System Type | - | Closed-center pressure-flow compensated (PFC) |
| Operator Station Type | - | Cab Standard |
| Starter Type | - | Electric |
