What is a John Deere pony motor?
The JD 720 Diesel relied on a starting system John Deere used in their other two-cylinder diesel tractors: an auxiliary engine affectionately known as the pony motor. The pony motor is a small gasoline engine nestled up under the dash.
How much horsepower does a John Deere R have?
John Deere R
| John Deere R Power | |
|---|---|
| Drawbar (claimed): | 35 hp 26.1 kW |
| Belt (claimed): | 43 hp 32.1 kW |
| Plows: | 4 (14-inch) |
| Drawbar (tested): | 43.15 hp 32.2 kW |
How much horsepower does a John Deere 830 have?
For starting, the 830 offered a 4-cylinder gasoline pony engine, or a 24-volt electric start….John Deere 830.
| John Deere 830 Power | |
|---|---|
| Drawbar (claimed): | 69.66 hp 51.9 kW |
| Belt (claimed): | 75.6 hp 56.4 kW |
| Plows: | 6 |
| Drawbar (tested): | 67.15 hp 50.1 kW |
What year did the John Deere R come out?
1949
For more than 10 years, the engineers at Deere researched and developed the John Deere Model R until it was released in 1949 at a selling price of $3,700.
How does a John Deere pony engine work?
The horizontally opposed gasoline pony engine was started with an electric motor and, once it generated enough heat to warm the bigger diesel, it powered a starter to light up the main engine. Once fired, John Deere’s original two-cylinder diesel was a farming force to be reckoned with.
Was the John Deere your the first diesel tractor?
The brawny model R was definitely not the first diesel, but it was John Deere’s first diesel tractor. It was also the biggest, most powerful workhorse the great green American tractor company had ever produced, and it took more than a decade of painstaking work to develop.
How much horsepower does a John Deere 2 cylinder diesel have?
Once fired, John Deere’s original two-cylinder diesel was a farming force to be reckoned with. With 16:1 compression and a 5.75 x 8-inch bore and stroke, the engine developed more than 48 horsepower at the belt.
How much is a John Deere Model Your diesel worth?
Despite the Model R diesel’s landmark significance, it lags behind many of the smaller John Deeres, such as the beloved 40, in terms of popularity among collectors. For instance, while a Model R in excellent condition might fetch $7,000-$8,000, a 40 Special in comparable condition could easily net 30 to 50 percent more.