Caterpillar R3 vs Hart-Parr 28-44
Side-by-side specs comparison
Verdict by the numbers
- The Hart-Parr 28-44 is more powerful than the Caterpillar R3: 48 HP versus 46 HP (+2 HP, +4%).
- The Caterpillar R3 is the more recent model: production started in 1934, versus 1930 for the Hart-Parr 28-44.
Full specs comparison
| Caterpillar R3 | Hart-Parr 28-44 | |
|---|---|---|
| Power | 46 HP | 48 HP |
| Production years | 1934–1935 | 1930–1937 |
| Fuel | Gasoline | Kerosene |
| Cylinders | 4 | 4 |
| Displacement | 5.7 L | 7.3 L |
| Weight | — | 2 909 kg |
| Drive | — | 2WD |
| Transmission | Gear | Gear |
| Gears (fwd/rev) | 3 / 1 | 3 / 1 |
| Wheelbase | — | 203 cm |
| Length | — | 319 cm |
Frequently asked questions
Which is more powerful, the Caterpillar R3 or the Hart-Parr 28-44?
The Hart-Parr 28-44 is more powerful than the Caterpillar R3: 48 HP versus 46 HP (+2 HP, +4%).
Which is more recent, the Caterpillar R3 or the Hart-Parr 28-44?
The Caterpillar R3 is the more recent model: production started in 1934, versus 1930 for the Hart-Parr 28-44.