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Old 01-03-2013, 09:12 AM   #1
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I understand that longer wire makes more resistance. Gauge of wire has a lot to do with it too.

I have 32 gauge kanthal, and 3mm wick. Doing a 5/4 wrap on a dual wick 3mm got me up to 2.0 ohms on a Vivi.

BUT, I just put in a 2.5 ohm dual wick factory head, and this thing is vapeing like a BEAST! Killer vapor and flavor. Looks to be using 2 -3mm strands. Maybe 2 2mm.

How can I get to 2.5ohms when I do the rebuild myself??? From what I understand, (and am experiencing) 5/4 is pretty much "the limit" without the coils possibly shorting out on the sides.

Do I need to get thicker wire? What gauge would get me there?

thx
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Old 01-03-2013, 09:21 AM   #2
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If you wrap your coils closer together you can get more wraps.
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Old 01-03-2013, 09:36 AM   #3
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Quote:
Originally Posted by skydivntrkr View Post
I have 32 gauge kanthal, and 3mm wick. Doing a 5/4 wrap on a dual wick 3mm got me up to 2.0 ohms on a Vivi.

BUT, I just put in a 2.5 ohm dual wick factory head, and this thing is vapeing like a BEAST! Killer vapor and flavor. Looks to be using 2 -3mm strands. Maybe 2 2mm.

How can I get to 2.5ohms when I do the rebuild myself??? From what I understand, (and am experiencing) 5/4 is pretty much "the limit" without the coils possibly shorting out on the sides.

Do I need to get thicker wire? What gauge would get me there?

thx
The higher the gauge number (e.g., 32, 34, 36, etc.) the thinner the wire and the higher the resistance per inch (or mm). Here's a handy chart that shows the various resistances for various types of resistance wire.

So, to answer your question, if you make a coil using the same number of wraps but use 33 gauge or 34 gauge Kanthal A-1, you will be at 2.5Ω or a bit higher. I like to vape high resistance at high voltage to maximize my battery life, so I typically wrap a 7/6 coil of 33 gauge Kanthal A-1 (using about 1.6") to give me around 3Ω, which I typically vape at around 4.5V-5V for a wattage of around 7-8.5W ...
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Old 01-03-2013, 09:49 AM   #4
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Quote:
Originally Posted by EgoManiac View Post
The higher the gauge number (e.g., 32, 34, 36, etc.) the thinner the wire and the higher the resistance per inch (or mm). Here's a handy chart that shows the various resistances for various types of resistance wire.

So, to answer your question, if you make a coil using the same number of wraps but use 33 gauge or 34 gauge Kanthal A-1, you will be at 2.5Ω or a bit higher. I like to vape high resistance at high voltage to maximize my battery life, so I typically wrap a 7/6 coil of 33 gauge Kanthal A-1 (using about 1.6") to give me around 3Ω, which I typically vape at around 4.5V-5V for a wattage of around 7-8.5W ...
7/6? Holy crap that's tight wrapping! NICE!!!

Hopefully I can get better with time. Best I am doing without shorting the sides is 5/4
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Old 01-03-2013, 10:22 AM   #5
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LOL, well, actually, on the Vivi Novas, I usually go down to 36 gauge and do a 3/2 or 4/3 wrap depending on whether I'm using 3mm silica or a 35-thread cheesecloth wick. I can do a 7/6 of 33 gauge on the VNs, but it's tight ... I usually use the 7/6 coils on my Penelopes, which have a lot more room!
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Old 01-03-2013, 02:14 PM   #6
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Quote:
Originally Posted by skydivntrkr View Post
I understand that longer wire makes more resistance. Gauge of wire has a lot to do with it too.

I have 32 gauge kanthal, and 3mm wick. Doing a 5/4 wrap on a dual wick 3mm got me up to 2.0 ohms on a Vivi.

BUT, I just put in a 2.5 ohm dual wick factory head, and this thing is vapeing like a BEAST! Killer vapor and flavor. Looks to be using 2 -3mm strands. Maybe 2 2mm.

How can I get to 2.5ohms when I do the rebuild myself??? From what I understand, (and am experiencing) 5/4 is pretty much "the limit" without the coils possibly shorting out on the sides.

Do I need to get thicker wire? What gauge would get me there?

thx
When I re-build my Nova's with 33 gauge Kanthal I get about 2.2-2.4 ohms every time with ease (i.e. not spending a extra time trying to fit more wraps on the wick). As stated by another contributor earlier, I tend to stick with higher gauge Kanthal for higher resistance @ higher voltages and longer battery life. 34 gauge seems to make for easy rebuilding at about 2.8-3.0 ohms.
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