The World's Weirdest Rotary Engine Is A 118-Year-Old French Spinner That Leaks Castor Oil Everywhere

Wankel rotary engine powered thousands of aircraft. One of several problems: It spewed castor oil on its pilots.
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Rotary Engine in World War I Aircraft: An Interview with Mark Mondello

At Old Rhinebeck Airdrome in Red Hook, New York, sits one of the premier collections of vintage aircraft in the United States. Director of Maintenance Mark Mondello is one of the key people ...