Eagle 20-40 of 1926 at Newark VTH 08 - IMG 3597

A rare Eagle 20-40 at Newark VTH show 2008

The Eagle Manufacturing Company of Appleton, Wisconsin was founded in 1888, and early products included a wide range of tools and agricultural implements. In 1899 they produced their first stationary gas engine. They then entered the tractor market in 1906 with a two-cylinder design for a 32 hp tractor. The first model was closely followed by a range of four-cylinder tractors in 1910, producing 16-30, 25-45 and 40-60 hp. These were still relatively heavy machines, and in 1913 Eagle introduced the two-cylinder Model D series to meet farmers' demands for a lightweight tractor. These were soon followed by the well-known Model F and Model H series, many of which have survived until the present day. The last of the two-cylinder Eagle tractors was the Model E, of 1929 with its distinctive forward-facing radiator offering as a 20-35 hp model. Based on a two-cylinder traction engine design, the engine measured 8.00x9.00 inches in bore and stroke. A truly massive affair, it was rated at 20 drawbar horsepower and 35 belt-pulley horsepower. Eagle also built it's Model H alongside the Model E from 1926-1930. With an identical 8.00-inch (203 mm) bore to the Model E, but a 1.00-inch (25 mm) longer stroke at 10.00 inches, the Model H created a brawny 40 horsepower (30 kW) at the drawbar.

Eagle was one of the first tractor manufacturers to use a 6 cylinder engine. It switched from 2 cylinders to 6 cylinders in 1930.[1] The 6-Cylinder Model 6A, which was very similar in appearance to an Allis-Chalmers or the Rumely 6. The 1930s saw two further models, the 6B and 6C, before Eagle gave up tractor manufacturing for good. Eagle had started building tractors from 1906, but halted production during World War II never to start it's tractor assembly lines again.[2][3]

Model rangeEdit


  1. Eagle Tractor, Gas Engine Magazine, Retrieved December 1 2007
  2. Agri chat, The free community farm bulletin board.

External linksEdit

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