Is this only for the old Omni? I just got a new Omni and spinning the mouth peace does nothing from what I've seen
All Omni models function the same way. The Omni does NOT have a spinning mouthpiece. Rather, the Omni has a condenser that threads onto the mouthpiece and requires a deliberate twisting of the mp to change its setting. It's purpose is to allow the user to adjust the airflow to their preference without the requirement of manually manipulating the carb. Set it and forget it and toke with abandon.
Pull the mp/ condenser out from the body. Notice that the mp threads onto the condenser. The mp can be threaded all the way tight onto the condenser or loosened off and barely threaded and anywhere in between.
As the mp is loosened off the condenser the length increases. As the mp is tightened or threaded further onto the condenser, the overall length decreases. As the condenser becomes longer, it's beveled end pushes farther into the neck of the titanium tip. This cuts off the air that would otherwise enter the carb.
Practise adjusting the mp/condenser outside the body, then reassemble and test. Then pull it out again, adjust and test until you get the hang of adjusting the Omni mp/condenser. You can adjust the airflow from wide open all the way down to a tight air restriction.
Once you find your sweet spot, you'll be in heaven.
Promise...
Regarding spinning mps; only the Vapcap S and Vapcap XLS have spinning wood mouthpieces. These are held in place by xrings. The wood mps are free spinning and provide additional ease to the twirling maneuver. You can cradle the mp in your palm and spin the Vapcap easily while you heat it.
Omni mp and spinning mp - two different animals, each with a distinctly different function.