28g twisted, dual coils 6/7 wraps 0.4ohms

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mschnabel

Full Member
Jun 9, 2014
17
13
Missouri
Hey everyone!
I just wanted to get some criticism/advice on this build. It is my first time ever straying from a simple 28g build.
It is 28g kanthal twisted, with dual coils of 6/7wraps on a 3mm screwdriver (I believe it is 3mm it was pretty large) came out to 0.4ohms.
So how does it look, does it seem to be how it should. Am I putting too much cotton in here? The coils take a while to heat up (2-3 seconds maybe) but the flavor is amazing. Thank you for the advice ECFers and as always vape on!!
:vapor:

First twisted dual coil.jpg
 

mschnabel

Full Member
Jun 9, 2014
17
13
Missouri
I assume but both are glowing evenly and firing at the same time...I remember twisted coils do take longer to heat up....
Cotton looks normal to me, as long you're over-saturating where it's bubbling and firing up into your mouth or out of the air holes you're fine

Yeah they both glow evenly from the inside out and fire together. Just wanted to make sure... a micro coil is so much easier to mess with but not nearly as fun to build so I wanted to take the next step :)
 

mschnabel

Full Member
Jun 9, 2014
17
13
Missouri
seems like you did it right, i perfer 24awg personally, dual coil , 5 wrap

XeoNox - do you twist the coil? Or just do a 5 wrap of the 24g individually? Also what size screwdriver/drill bit do you wrap on? I just got 50' of 24g and want to play with it, just haven't really had much time to test any builds. Thanks for the comment :)
 

Completely Average

Vaping Master
ECF Veteran
Jan 21, 2014
3,997
5,156
Suburbs of Dallas
Regardless of how you do your build, they still only perform one task. So how complicated do you want it to be?

Once you put the top on that RDA nobody can see how pretty you made your coil!

It's not about pretty coils, it's about the science of vaping.

Heat converts the liquid to a vapor. If you want to produce more vapor you can either create more heat or build a coil with more surface area. Since the amount of heat you can produce is limited by your battery and the resistance of the wire the easiest way to increase vapor production is to increase the amount of surface area of the coil.

The more surface area the more liquid that can be heated at once. A twisted wire coil has several times the surface area of a single wire coil, so it can produce a lot more vapor at the same resistance.


It's the exact same concept as using dual coils instead of a single coil. Two 2ohm coils running in parallel have four times the surface area of a single 1ohm coil.
 
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mschnabel

Full Member
Jun 9, 2014
17
13
Missouri
I wish there was a GIANT like button or something to give yousuper props on that explanation Completely Average, thats why I was hoping someone more veteran to building would be able to assess if the width/length or coil, shape and position as well, combined with wicking/air flow looked alright. But evidently new people just don't get love from the vets :facepalm:
 
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