The traditional piston engine has garnered the vast majority of attention and application in the internal combustion age, but there was another: the Wankel rotary engine. German engineer Felix Wankel designed the rotary engine in 1954. Employing a rounded triangular rotor spinning concentrically around a central shaft, Wankel rotary engines deliver glassy, smooth power and can produce impressive power ratings.  The rotary engine isn’t perfect. Gas mileage isn’t so great, finding someone willing to work on it can be
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