how come I can't get the large amount of vapor clouds I see everyone getting on you tub I have ben using the ego c twist with my voltage set at 4.4 running with a Vivi Nova tank and have tried 100% VG and 80/20 PG/VG 30/70 I have tried 1.8 ohm and 2.8 ohm coils just cant get a good amount of vapor and constantly am tasting my metal coil can any one help me get a better vaping experience please
4.4v on a 1.8 ohm is far too warm, that would explain the metal coil taste...
As for the vape amount it relies on a tri-factor of events to take place. You need Liquid, heat and air to make this happen.
The liquid need to atomize (Not burn) a 1.8 ohm coil should be running between 3.7v and 3.9v, your 2.8 ohm can run anywhere from 4.2v to 4.6v depending on your tastes. Too warm and the wick won't feed fast enough to keep the coils moist allowing atomization.
Heat...Too little and your not vaporizing your liquid, too much and your superheating the liquid. The ideal number is 6.0 watt...this can be figured out by taking voltage times voltage divided by ohms.
Air...the draw on an ecig is long and slow, not like an analog or pipe. it takes time for the coils to reach atomization tempeture, at this time your heating a liquid and your coils. Also you can reach super suspension of vapor. This occurs when there isn't enough oxygen to continue the process of vaporization. Just keep that slow draw going and you'll find that it will work just fine. If the draw isn't good enough there are several things you can do on a Viva Nova to increase air flow (Draw) to get more vapor production out of your device..check out youtube for good videos on how to accomplish this.
Once all these factors come together then it will offer you the best vape experience and most vapor. Keep in mind some devices produce more vapor then others, this is just the nature of the device. I personally vape for taste and not for creating weather systems, but you will find your middle ground where utopia is reached.
Hope this helps out some.