1918-1928

E-B announcer the 12-20, Model AA tractor in July, 1918. It was billed as a 15-25 for the price of a 12-20. The* Model AA only weighed 4,755 pounds, nearly a ton less than the Model Q, even though both used the same engine. E-B squeezed a little more power out of the AA by speeding it up to 900 RPM; this was 50 revs faster than the Model Q. Enclosed bull gears and pinions were featured on the AA. In remained in production until operations ceased in 1928.

Cylinders: Four, vertical, cast in pairs, 4 3/4 x 5 inches

RPM: 900

Fuel: Kerosene

Carburetor: Bennett

Drawbar HP: 12

Belt PTO HP: 20

Weight: 4,755 lbs

Valve Arrangement: L head

Ignition: K. W. high tension magneto

Cooling System: Pump Circulation

Lubrication: Splash

Pulley: Face, 6 3/8 inches; diameter, 12 inches: RPM 900

Transmission: Enclosed gears

Traction: Two wheels, 54 inches high, 12 inches wide

Turning Circle: Radius, 25 feet

Speeds: Miles per hour, 1.81 and 2.33