Yes, there is a 12-rotor engine — here's how much HP it's trying to push

Could there possibly be a rotary engine with 12 rotors? The answer is yes, and here's everything we know about it including ...
Hackaday

Autopsy Of A First-Generation RX7 Mazda Rotary Car Engine

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, ...
Jalopnik

Why Mazda Built The Three-Rotor 20B Engine (And Used It Just Once)

Mazda made a splash in the market in 1990, launching the Eunos Cosmo with the three-rotor 20B engine. Compared with contemporary Wankel rotary engines, the 20B's extra rotor beefed the compact ...
AOL

Why Rotary Engines Use Two Different Spark Plugs

Mazda 13B rotary engine in a white Mazda RX-7 engine bay. - TTTNIS/Wikimedia Commons When it comes to unconventional engine design, few exceed the Wankel rotary in terms of weirdness. Despite that, ...
Hackaday

The Birotary Engine Explained

Everyone generally knows about piston and rotary engines, with many a flamewar having been waged over the pros and cons of each design. The “correct” answer is thus to combine both into a single ...

Weight Is The Enemy In Rob Dahm's Single-Rotor Turbocharged Miata

Can a single rotor Miata exist without shaking itself apart? Can a single rotor Miata be even more fun to drive than its ...
AOL

Why Mazda Still Has Not Given Up On A New RX Style Coupe

There are three certainties in life: death, taxes, and Mazda’s obsession with the rotary engine. No matter how market trends change, how regulations tighten, or how quickly electrification advances, ...