True, I think most of us have noticed this. Even on a mech mod as the battery discharges a change in flavor profile is noticeable. Seems that dairy and pastry notes have more presence at slightly higher temps than say fruity flavors. Let's say I'm
vaping a lemon cheesecake flavor and want to bring out the graham cracker butter crust flavor more, I'd turn up the temp 5 or 10°, whereas if I wanted to allow the lemon to dominate I would turn down the temp a little. Thing is I don't really know what the mixologist was shooting for in the first place so I adjust temp for a pleasureable vape and leave it there. My power setting always gets set higher than needed to reach whatever temp I select.
Bill, there are three reasons I choose to set my power higher than what is required to reach my highest set temp. The first is to minimize splitback (nothing spits like an under powered coil); the faster the temp ramps up the less chance of spiback. The second is to reduce coil gunking. The third is excessive atty temp.
More on coil gunking. An under powered coil or one that takes a longer time to reach optimum vaporization temp will gunk the coil faster, much faster with certain ingredients like sweeteners. Same goes for cooling off the coil post vape; I always continue my draw for a second after releasing the fire button.
More on hot attys. An under powered coil or one that takes longer to heat up to optimum vaporization temp will get hot faster because the larger vaporized droplets of
juice (not just spiback) cannot be cooled as readily by incoming air. These larger droplets will hit the inside of the atty and transfer their heat into the atty surfaces. However, once up to optimum vaporization temp the droplets are smaller, like a super fine mist and can be cooled quite easily by incoming air so your atty won't heat up near as fast.
So to use "temp regulation" most effectively (translated no spitback, long wick life and cooler attys) I have found that the power must be set higher than needed to reach temp but not so high as to outrun the chipset's ability to stop temp overshoot and also to produce a nice power roll off as it nears set temp.
More on power roll off. My understanding is that there is an algorithm built in to temp control to predict how fast a coil will reach set temp once it has heated past a certain percentage of set temp. I'm not sure what that percentage is but it is evident on
device monitor that the board rolls off the power before the coil reaches the set temp (a power curve if you will). If you reduce the power setting the curve gets wider before reaching set temp, if you increase power the curve gets narrower, if you turn up the power really high the curve becomes virtually nonexistant and can even cause a slight overshoot in temp. On some finicky dnas using excessive power in combination with low tcr wire can even kick you out of tc.
More on power curves for flavor. In this discussion have we even considered when vaporization actually starts in the heating process? TCR curves and power curves are great things to ponder but if we consider that we're probably not even producing vapor at less than 300° and not much vapor even at 350° it stands to reason that anything happening below those temps is meaningless. The temp range I focus my attention on is 390-440° where likely 95% of my vapor is being produced.
I'd like to stress that I'm not trying to push my style of tc on anyone. There is nothing wrong with using tc in a different way.
