Hart-Parr 28-50 vs Keck-Gonnerman 25-50
Side-by-side specs comparison
Verdict by the numbers
- The Hart-Parr 28-50 and the Keck-Gonnerman 25-50 deliver the same power: 55 HP.
- The Keck-Gonnerman 25-50 is the more recent model: production started in 1928, versus 1927 for the Hart-Parr 28-50.
- The Keck-Gonnerman 25-50 is heavier: 4445 kg versus 3900 kg for the Hart-Parr 28-50.
Full specs comparison
| Hart-Parr 28-50 | Keck-Gonnerman 25-50 | |
|---|---|---|
| Power | 55 HP | 55 HP |
| Production years | 1927–1930 | 1928–1937 |
| Fuel | Gasoline | Kerosene |
| Cylinders | 4 | 4 |
| Displacement | 11.1 L | 9.9 L |
| Weight | 3 900 kg | 4 445 kg |
| Drive | 2WD | 2WD |
| Transmission | Gear | Gear |
| Gears (fwd/rev) | 2 / 1 | 2 / 1 |
| Length | — | 411 cm |
Frequently asked questions
Which is more powerful, the Hart-Parr 28-50 or the Keck-Gonnerman 25-50?
The Hart-Parr 28-50 and the Keck-Gonnerman 25-50 deliver the same power: 55 HP.
Which is more recent, the Hart-Parr 28-50 or the Keck-Gonnerman 25-50?
The Keck-Gonnerman 25-50 is the more recent model: production started in 1928, versus 1927 for the Hart-Parr 28-50.
Which is heavier, the Hart-Parr 28-50 or the Keck-Gonnerman 25-50?
The Keck-Gonnerman 25-50 is heavier: 4445 kg versus 3900 kg for the Hart-Parr 28-50.

