Actual Rotary Displacement Request

[Libor]

Originally Posted by My5ABaby

I still vote to compare apples to apples we use power/engine weight and/or size (physical, not displacement...).

Rotary maybe had slight edge in this, some 40-50 years ago

Bare engine may appear compact and light, but whole package is what counts. Engine, intake and exhaust manifolds, cooling system, muffler system, it all counts.

We can´t just say that certain engine is compact and light, when all needed accessories through their bulk and added weight doesn´t make it such viable powerplant.

I would look for advantages of wankel rotary elsewhere