Hey, I actually didn't see Your post before I posted lol, You've got the idea though, on the rotary you can have some overlap that will allow the case pressure to equalize through the carb if it goes negative at the tail end of the main charge getting pumped/sucked from the case to the combustion chamber. I'm just trying to get this down myself lol.
Does anyone know about reed-valve actual intake duration? When about does the case pressure go negative and suck them open? Is it when the transfers close, or closer to 180° as the piston is accelerating back upwards? (edited)