Denning B vs Gray Tractor 15-25
Side-by-side specs comparison
Verdict by the numbers
- The Denning B is more powerful than the Gray Tractor 15-25: 26 HP versus 25 HP (+1 HP, +4%).
- The Gray Tractor 15-25 is the more recent model: production started in 1915, versus 1913 for the Denning B.
- The Gray Tractor 15-25 is heavier: 2494 kg versus 1587 kg for the Denning B.
Full specs comparison
| Denning B | Gray Tractor 15-25 | |
|---|---|---|
| Power | 26 HP | 25 HP |
| Production years | 1913–1915 | 1915–1916 |
| Fuel | Gasoline | Gasoline |
| Cylinders | 4 | 4 |
| Displacement | 5.2 L | 6.1 L |
| Weight | 1 587 kg | 2 494 kg |
| Drive | 2WD | — |
| Transmission | — | Gear |
| Gears (fwd/rev) | — | 2 / 1 |
| Wheelbase | 228 cm | — |
| Length | — | 441 cm |
Frequently asked questions
Which is more powerful, the Denning B or the Gray Tractor 15-25?
The Denning B is more powerful than the Gray Tractor 15-25: 26 HP versus 25 HP (+1 HP, +4%).
Which is more recent, the Denning B or the Gray Tractor 15-25?
The Gray Tractor 15-25 is the more recent model: production started in 1915, versus 1913 for the Denning B.
Which is heavier, the Denning B or the Gray Tractor 15-25?
The Gray Tractor 15-25 is heavier: 2494 kg versus 1587 kg for the Denning B.

