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Aermotor Model 502
Aermotor Company
Chicago, Illinois
Manufactured in 1915


The original self-oiling Aermotor was made only in one year, 1915. (The very popular 602 was introduced the following year) The bearings are made of poured babbit. The main casting serves as an oil reservoir. The gears carry oil to the main bearings and in the 502, a special "flip" oiler, rubbed on one of the main gears and flipped oil to the upper workings. This arrangement was changed in later models to an oiling ring. Note how the shut off mechanism works through the stub tower. The 502 had corrugated sheet metal used in the construction of their tails.


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Copyright 1999 - 2008
Bryon K. Rykard

Last Updated on August 1, 2008