Discover the wild story of Mazda's REPU, the fascinating and flawed rotary-powered pickup truck experiment from the 1970s.

Rotary engines were conceptualized by German engineer ... These rotors are made up of two large, interlocking gears, one with ...

E is a rotary engine, constructed on the plan of Holly's patent, as shown in our former illustration. F is a rotary pump, also constructed aft0r the plan of Holly's patent. G is a take-off for a ...

Mazda has already put the rotary engine back into limited production, using a small single-rotor 830-cc version that produces a peak of 74 hp to act as a range-extender in the MX-30 R-EV ...

"I got an unbelievable reaction," he says. That was a great encouragement, and I decided to reopen the rotary engine development group." Moro admits there are challenges to making a rotary ...

or rotary, engine. If you ever wondered how these worked, why not print a model? That’s what [Engineering Explained] did. They printed a 1/3 scale model and made a video explaining and ...

The model’s rotary engine is also intended as a backup for power production in emergencies and other contingencies. For example, if a household consumes 10 kilowatt-hours daily, electricity can ...