I just got in my new Varitube, and it is a great mod for high-ohm cartos; My 3 ohm DCT's work very well on it at between 4.5 and 5.5 volts. But with my order today, I also got a 1.5 ohm DCT and a Mini Vivi Nova with replaceable heads (it comes with three, and has the 2.4 on there as stock).
So now let's get into some numbers: to start with, the Nova with the 2.4 ohm head, since it had more problems than the DCT. It originally showed a resistance of 2.7 ohms, and has since fallen to 2.5 with a small amount of use. I originally tried it at 4 Volts, which at 2.5 ohms give me only 6.4 watts- not too high. But the atty tastes like it is burning up! even when I bring it down to 3.7, and even 3.4 volts (4.6 watts @ 3.4v), I get the same "burning atty" hit from it. I know what a burning atty tastes like- I've been doing this a long, long time.
As far as the dual coil carto- I had to brush up on my maths a bit to get this right- but I understand that the 1.5 ohm dual coil is two 3 ohm coils in parallel- halving the power (watts) delivered to each one. Now, I again started using this one at 4 volts, yielding over 10.6 watts of power- and got the burnt atty taste after a few draws. I went all the way down to 3.4v, which was yielding 7.7 watts, or 3.85 WPC (watts per coil)- which is very low by my vaping standards. Again, I ended up with the horrible burning atty flavor after some time went by.
Originally I had thought that it may be either a juice flow problem- but I accounted for this by priming the Nova coil (as well as the twisting/turning tank dance), and time and again it did nothing to solve the issue. I also tried a few tricks on the DCT (releasing the vacuum inside the tank, taking some unpowered draws in between real draws, etc etc) and nothing worked. THEN...
...I dug a bunch of old E-cig stuff out of storage- although, out of hundreds or thousands of dollars spent over the years on the hobby, I found exactly (1) Battery-an old Ego 650 mah T from over a year and a half ago; its charger; an old 510 charger; and a 60ml bottle of pure VG. but this gave me an opportunity I didn't have before: a chance to try my new burny tanks on a regular, non-mod system (I have 2 mods nowadays, and that's all I use normally) AND THEY BOTH WORK GREAT ON THE OLD EGO!
Really, they do...it's like night and day. On a fully charged (albeit old) ego, which would nominally be running at 3.2 to 3.4v under load, I have two perfectly-working tanks. The wattage is somewhere around 4.6 watts on the Nova, and 7.7 watts overall/ 3.85 WPC on the DCT. I've had no burning taste, no problems with the juice flow, etc. And I chain vaped each for well over an hour or more while waiting for my new devices battery to recharge.
My guess: even with the same mathematical power, I have SEEN the pulse-width-modulation graph reading for the YJ Chrome Varitube- and while it is a really neat concept that surely puts out a great amount of power, it also *technically* runs at MUCH higher voltage for fractions of a second, every few fractions of a second- that's part of the way it fires. And I am thinking this is interfering with my lower-resistance coils. Any thoughts? Anyone having similar issues?
EDIT: thought I would mention that the DCT carto was PRIMED with 75 drops of liquid as per usual before use. That's just one more thing I wanted to get out of the way before someone asked the question. And, it did have a good chance to sit for awhile, as did the Nova tank.
So now let's get into some numbers: to start with, the Nova with the 2.4 ohm head, since it had more problems than the DCT. It originally showed a resistance of 2.7 ohms, and has since fallen to 2.5 with a small amount of use. I originally tried it at 4 Volts, which at 2.5 ohms give me only 6.4 watts- not too high. But the atty tastes like it is burning up! even when I bring it down to 3.7, and even 3.4 volts (4.6 watts @ 3.4v), I get the same "burning atty" hit from it. I know what a burning atty tastes like- I've been doing this a long, long time.
As far as the dual coil carto- I had to brush up on my maths a bit to get this right- but I understand that the 1.5 ohm dual coil is two 3 ohm coils in parallel- halving the power (watts) delivered to each one. Now, I again started using this one at 4 volts, yielding over 10.6 watts of power- and got the burnt atty taste after a few draws. I went all the way down to 3.4v, which was yielding 7.7 watts, or 3.85 WPC (watts per coil)- which is very low by my vaping standards. Again, I ended up with the horrible burning atty flavor after some time went by.
Originally I had thought that it may be either a juice flow problem- but I accounted for this by priming the Nova coil (as well as the twisting/turning tank dance), and time and again it did nothing to solve the issue. I also tried a few tricks on the DCT (releasing the vacuum inside the tank, taking some unpowered draws in between real draws, etc etc) and nothing worked. THEN...
...I dug a bunch of old E-cig stuff out of storage- although, out of hundreds or thousands of dollars spent over the years on the hobby, I found exactly (1) Battery-an old Ego 650 mah T from over a year and a half ago; its charger; an old 510 charger; and a 60ml bottle of pure VG. but this gave me an opportunity I didn't have before: a chance to try my new burny tanks on a regular, non-mod system (I have 2 mods nowadays, and that's all I use normally) AND THEY BOTH WORK GREAT ON THE OLD EGO!
Really, they do...it's like night and day. On a fully charged (albeit old) ego, which would nominally be running at 3.2 to 3.4v under load, I have two perfectly-working tanks. The wattage is somewhere around 4.6 watts on the Nova, and 7.7 watts overall/ 3.85 WPC on the DCT. I've had no burning taste, no problems with the juice flow, etc. And I chain vaped each for well over an hour or more while waiting for my new devices battery to recharge.
My guess: even with the same mathematical power, I have SEEN the pulse-width-modulation graph reading for the YJ Chrome Varitube- and while it is a really neat concept that surely puts out a great amount of power, it also *technically* runs at MUCH higher voltage for fractions of a second, every few fractions of a second- that's part of the way it fires. And I am thinking this is interfering with my lower-resistance coils. Any thoughts? Anyone having similar issues?
EDIT: thought I would mention that the DCT carto was PRIMED with 75 drops of liquid as per usual before use. That's just one more thing I wanted to get out of the way before someone asked the question. And, it did have a good chance to sit for awhile, as did the Nova tank.
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