how much PG do you use in your mixes? what alerts in smoking a 100%VG (minus nicotine and flavor)?
Short answer: No more than 20% usually.
See the goal as balancing vapor volume and fidelity to flavor.
The kitchen table science few talk about is WATER. Due to its low boiling point it vaporizes faster and in so great a proportion (~1400:1 by vol) than either PG/VG that it serves as the main component in vaporization for our purposes. This volatile evaporative expansion aerosolizes the juice as a mechanical process. I believe relatively little actual vaporization of the main carriers or bases actually takes place. It may perhaps through the very high heat of diffusion. This may add some flavor but high heat no doubt to me alters our taste of those flavors. In any case I believe this to be minimal. Water is the fuel for this engine.
So here I'd suggest…consider the above as you evaluate your coil designs or configurations and particularly the part that compression of liquids and air play in the vaporization process (think automotive combustion as an example, or pressure cooking). How does a focus or concentration of power or energy impact that?
Personally, I try not have add water to any mixes. My experiments using water as an ingredient early on were inconclusive. Instead I narrowed down my sources of VG base to a water ratio I found most conducive to good flavor and vapor production. I try to limit any non VG based ingredients as best as possible as not to affect the net water % too much.
The percent of water in our base or as a proportion of our mix is important. This varies with every recipe (ingredients) but far less so than the % of the VG used itself which is the major and critical part.
Good luck.
