I am honored that you made a post about this. You did a lot more justice to the topic of rotary valves than most people do. Most just assume it is a Wankel rotary engine.

No, I just didn’t realize the reason the footprint is smaller than the floorspace, is because there’s multiple floors. I was picturing an inverted pyramid.

I hope not. I like air.

I feel so bad for this guy but I can't stop laughing.