Single Coil vs. Dual Coil Carto's

[PhreakOne]

So I tried searching the forum for an answer but couldn't find one. I am wondering what are the differences between Single coil and Dual coil carto's besides the obvious fact that one has one coil and the other has two. What are the differences in flavor a vapor production? Why use a dual over a single and vise versa. I tried talking it out with the guy at one of my local shops and he couldn't really explain it to me at all go figure.

 

[Mortificant]

I notice that dual coils put off a noticeably warmer vape due to all that extra heat. More vapor too

 

[Baditude]

I started out using dual coils in my cartotanks. I began looking for some answers when I noticed a lot of burnt taste. I did some research into dual coil vs single coil cartomizers on ECF.

What I found were mostly opinions. Many people had switched from duals to singles, arguing that the dual coils didn't produce enough benefits to warrant the additional drain on battery life. There were others that preferred dual coils, of course for a warmer vape and more vapor production.

There were statements made that dual coils were developed to be able to provide more vapor production for fixed voltage PVs, via twice the number of coils within the cartomizer. However, there were skeptics to that statement who claimed that for a dual coil to really shine, voltages of 4.5v and higher were required. Contradictory theories? I thought so, too. I was not able to find any scientific evidence to any of the above.

Long story made short, I decided to give single coils a trial. I switched out all of my dozen or so tanks to single coils...same brand, same ohm resistance, same number of holes. The verdict: I was and am impressed with the single coils. Same vapor production and flavor, no more burnt taste, and the expected increase in battery life. Your results may vary from mine.



I have a theory. Since dual coil carts have coils one over the other, the top coil may occassionally fire around filler that isn't completely saturated with e-liquid. Even after a carto is properly primed, after a few drags the top of the filler will appear to look dry. This is normal and can't be prevented, as the tank will not replenish the filler completely to the top of the carto even if the system is wicking properly. But that top coil lies about mid-way up the carto length and may be firing around dry fill, resulting in a burnt taste.

A single coil carto will not run into this problem. The wick holes are where the coil lies, so the filler stays wet and has zero chance of burning.

 

[Silense]

The Gospel of Baditude, always spot on man. I have had same experiences. Single over double any day IMO.

 

[sawlight]

To add to "Tude's" post, I also got away from dual coils because the top coil would cause juice splatter to hit my tounge while vaping. I didn't like that much! Also, as he stated, it was an attempt to get more from fixed voltage, but you never get something for nothing, Ohm's law always rules! They produce a lot more heat at the expense of battery life. Single coil carto's have come a long way since then and I certainly don't feel like I'm missing out on anything, even now back on fixed voltage.

 

[X6X8]

Same experience here also. As Baditude and the others have responded, I tried both types and settled on the single coil for the same reasons.

 

[Forkeh]

To be perfectly honest with you, I can't tell the difference between vapor production in single coil and duel coil. I've also never gotten a burnt taste with duel coil...but I'm a compulsive carto topper (and I don't use carto tanks, I can be assed to deal with the pressure difference and possible leakage). So I don't put much weight in all the duel coil talk. Res on the other hand, very important. I can easily tell the difference between something around 1.8 and a more standard res. Low res is definitely the way to go unless you've got a high voltage device.