Hey fags, am bored and never been on your board so I'm giving this a stab in the dark. Could some big brain please explain the physics involved with counter rotating propellors? i.e. 2 layered props that rotate in opposite direction. Doesn't it seem counter-intuitive or am I just retarded? Right now, the thought of air flow entering the first prop being affected and then switching again when it hits the second prop seems odd. what are the pros and cons? Thanks in advance.