Trying to get .2 ohms
- Thread starter Dalek Caan
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Have you tried using this tool? Coil Toy - Online calculator for e-cigarette resistance coil building Also make sure you understand battery safety. What batteries do you plan on using with this build?
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I'm not sure of my diameter. I use those little blue screwdrivers to wrap my coils. lol
You need to use the coil calculator and use a set of tools (precision screwdrivers or drill bits) where you know the diameter of the tool. Enter in what the ohm of the coil you want, enter in all the other variables and it will tell you.how many wraps you need.
You need to have an ohm reader or DMM to check the resistance of your coil AND you need to make sure you have batteries that can handle the continuous amp draw (plus headroom) of your build.
You need to have an ohm reader or DMM to check the resistance of your coil AND you need to make sure you have batteries that can handle the continuous amp draw (plus headroom) of your build.
With 24g wire and 5 wraps each I'm assuming you're using a large coil diameter, you need to make the diamter smaller to make the resistance lower with the same number of wraps.
You really need to learn a coil wrapping calculator or you'll be stuck with forever having to experiment with actual coil builds to make a new, different build the resistance you want. The one I use is the one at Steam Engine.
Chose your units, 'Diameter of wire' (gauge, 24 in this case), 'Setup' (dual coil parallel in this case), 'Target resistance' (0.2), 'Inner diameter of coil', 'Leg length (total per coil)'.
Look at the results. The 'rounded to "half wraps" ' will say something like 6/5, which means on one side of the coil you'll count 6 wraps and on the other side 5.
Get yourself a caliper like this one for measuring things with. The digital readout is what you want and it will do both metric and inch. You can use a set of micro screwdrivers like this to wrap on. The sizes 1.4mm, 1.8mm, 2.4mm, 3.0mm are perfect for this.
The longer your wire is at a given gauge, the higher the resistance will be. So if you want to lower it a bit you can take a wrap off, or use a smaller inside diameter with the same number of wraps, or a combination of the two.
If you go too low in resistance you will be drawing too much power from your battery and the risk of it venting goes up. I suggest you do not go under 0.2 ohms. Realize also that your ohm meter is very likely not completely accurate, and 0.2 ohms could well be somewhere between 1.5-2.5. The coil calculator will help a bit here in that if you entered the right numbers into it and you find the resistance is way off what it should be, you'll have that as an indication there is a problem that you should figure out.
Also, if you ever realize your battery is getting warm it's because you've gone too low in resistance or you have a short somewhere. Stop vaping it and fix it immediately.
Hope this helps.
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The easiest way to put this is the longer the total wire used, the more resistance. If you find a way to use less wire, your resistance will be lower. Try a smaller diameter, less wraps, more coils, or go down to a 22g. Your ohm meter is more like +/- .2 ohms so really anything near that can come close to a dead short. I'd also suggest the leads running to your contact points should be as short (close) as possible.
I find the more wraps you have the higher quality the vape. What you need is a lower guage wire, like 20 or 22 guage. Also try some of the high end wires like g-plat or omega wires which offer lower resistance per wrap versus kanthal. i'm assuming your building a dual coil...
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That little blue screw driver is 2mm, I personally have no idea how to get to .2 and below *cough bs see my avy cough* Your new and just into doing it? stay at .3 for a bit.
Exactly what is the point of going to .2? Is .29 not good enough?
0.2 ohms is around 55 watts in a mech mod. 0.29 ohms is around 40 watts.
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