so whats the deal with that lil paper thingy on the coil? i have never noticed one before? i took it out with tweezers and its starting to do better???
It's there to insulate the coil and the exposed wires (mostly the + side) from the barrel of the head. I've taken some of them out as they do char/burn/singe easily, and I don't plan on using them when I rebuild, but I haven't noticed a
huge difference with or without lately. Maybe I've been lucky……I remember an improvement when I took one out of a head.
I rarely go over 3.8v with my vivi novas. The provari uses a PUlse width modulation. This means it varies the length of a 6v pulse to effectively produce the equivalent of the voltage desired. You may find yourself finding a lower voltage to be more to your liking. Start low and work your way up till you get the desired results. You may have burned your wick in which case it will never lose the burnt taste.
I'm not sure exactly how their circuitry works, but the Provari puts out a pretty much flat signal. It uses PWM as
part of the circuitry, but plugging one onto a scope looks nothing like the other PWM mods out there. So it's not just firing at 6V and varying the duty cycle.
And based on my experience, 4.2-4.4V on a 2.8 ohm head is
not that high. I run my 1.8 ohm heads higher than that and don't get burning flavor.