Wankel rotary engine powered thousands of aircraft. One of several problems: It spewed castor oil on its pilots.

In theory, Wankel-style rotary internal combustion engines have many advantages: they ditch the cumbersome crankcase and piston design, replacing it with a simple, single-chamber design and a thick, ...

For more than a decade the name Wankel has popped up whenever car enthusiasts start talking about advanced-design automotive powerplants. The theory of the Wankel engine goes back to 1954 when Dr.

There are a lot of strange automotive designs out there, but this defunct engine from the '70s may just be the weirdest one you've ever seen.

What's the first thought that comes to your mind when someone says Corvette? For some, it's a white Corvette C4 driven by Burt Reynolds as he drives off into the sunset in a glorious V8 symphony.

Language is an imperfect medium, but it's what we've got, so let's go with it. Determining the swept volume of inventor Felix Wankel's rotary engine can generate more arguments than claiming what a GT ...

The R130 was a very rare model, produced for only three years and with fewer than 1,000 units built. It was also notable as the only front-wheel-drive Mazda model powered by a rotary engine until the ...