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Single vs dual coil

Discussion in 'Tanks, clearomizers and drop-in coils' started by zerocool, Feb 11, 2014.

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  1. zerocool

    zerocool Full Member

    Apr 25, 2009
    Cape town
    What is the difference? I just got the kanger aero and it say is dual coil, i own vapeonly bbc and say single coil.
    What is the real difference between the 2 .....
  2. Hill

    Hill Super Member ECF Veteran

    May 7, 2013
    Texas USA
    A single coil only has 1 wire coil with a wick or wicks whereas a dual coil actually has two separate coil and wick set-ups.

    whether ones better than the other I really couldn't say. Ive only ever used single coils and they're fine for me.
  3. Technohydra

    Technohydra Senior Member Verified Member ECF Veteran

    Apr 2, 2013
    Nebraska, USA
    Single versus dual is a pretty simple thing, with one caveat. In a single coil, you have a single bundle of resistance for your voltage to hit, causing current to flow, resulting in heat. That heat makes the liquid in the wicks vaporize, and you have vaping goodness. In a dual coil setup, you have two coils in parallel which act a little differently. The resistance values don't add together normally, they add in inverse. This means that two 3 ohm coils in a parallel configuration will become a single 1.5 ohm load.

    This causes a few things to happen. Whereas volts hitting ohms is still causing amps, and thus vapor, the resulting amps will be higher, making more heat and thus more vapor per second. Basically what is happening is you are acting on half as much resistance with the same voltage, and are getting the same experience as if you had a single coil at 1.5 ohms...or are you?

    The other thing that is happening is that where you are acting on 1.5 ohms, whether it is in a single or dual coil configuration, the surface area you are creating vapor from has increased dramatically. This means that instead of vaporizing from, say 1/8 of an inch of wick at a time, you are now vaporizing from 1/4 of an inch at a time, which will result in more vapor being produced. Since the size of the atomization chamber is fixed in size, more vapor produced means: more vapor per hit, more flavor per hit, more throat hit per hit, more juice consumed per hit, more nicotine delivered per hit, and more heat sensed per hit.

    Dual coils should, in theory, make for a more flavorful, dense, and warmer vape that will satisfy you with less hits being taken. This is not always true, but generally seems to act this way. The one caveat is that there are setups (mostly cartomizers) that have a 'dual coil' in series. In this case, the resistances add up normally, and they act as a single coil, with the addition that there may be more surface area (fractionally) and the liquid is being vaporized from more than one point on the wicks. This can be a good thing, or if one part of the wick chokes or runs dry, can be a very bad thing.

    Hope this helps.
  4. Grimmda

    Grimmda Senior Member ECF Veteran

    Jan 19, 2014
    Some have more heat, thus flavor and vapor. But most state a hand made single coil with better wire and cotton is even more so. Rule of thumb is any vendor made coils can't touch ones you can make yourself. Make sense?
  5. zerocool

    zerocool Full Member

    Apr 25, 2009
    Cape town
    Is that the reason why my battery with the aero last much less than the vapeonly?
  6. Benzin

    Benzin Super Member Verified Member ECF Veteran

    Mar 12, 2012
    Cancun MX
    Yep, think of it like having your battery running two single coil atties at the same time.
  7. FearTX

    FearTX Vooping Furiously. Verified Member ECF Veteran

    The differences have been covered fairly well. One thing that has not been covered.

    The dual coil is going to make twice as much heat. Kanger did not completely redesign the coil heads for dual coils. They made only the changed necessary to cram 2 coils in. This coil is nested in a chunk of stainless steel. It does not dissipate heat very well. What I have found happens is that the extra heat from that other coil winds up building up and caramelizes the juice at the bottom of the tank faster.

    I get less time on the coil and juice thickening up in the tank faster. Maybe they will do better on it next time around. :)
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