RDA's I must be doing something wrong :(
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What you're looking for by building a single coil first is to get get the flavor and temperature of your vape right, and to pin down your wicking. Larger diameter coils can hold more wick (and therefore more juice and take more power without burning) than smaller diameter coils, but will take longer to heat up at a given wattage. To combat this, you would use a lower resistance wire so that you can still have a reasonable number of wraps on the coil. When wrapping smaller coils you get more wraps for the same length of wire, so you use a higher resistance wire to compensate.
Once you have the single coil build dialed in, you want to build another identical coil, and install this in parallel with the first. this will give you twice as much vapor, but with roughly the same heat and flavor. This causes the total resistance of the "atty assembly" to be half of what it is in single coil mode. you want to keep this in mind when building the single coil to that you can keep the resistance high enough so that when you halve it later the battery and mod can still handle it. For mech mods you'd generally aim for somewhere between 1 and 2 ohms per coil, this should usually be higher for a regulated device since it can boost the voltage to be able to deliver the desired power.
Edit: I should clarify since this doesn't seem to be mentioned much, you are concerned with the POWER delivered to the coil. This is determined by how many Amps your supply Voltage can push through the coils Resistance. How much power the coil will handle is a factor of its length (mW/mm2) and how well it is wicked which is a factor of its diameter. Too much power in a too short coil will burn your juice even with enough wick. Too much power in a too long coil will burn the juice at the center of the coil because liquid cannot be wicked to it fast enough.
Once you have the single coil build dialed in, you want to build another identical coil, and install this in parallel with the first. this will give you twice as much vapor, but with roughly the same heat and flavor. This causes the total resistance of the "atty assembly" to be half of what it is in single coil mode. you want to keep this in mind when building the single coil to that you can keep the resistance high enough so that when you halve it later the battery and mod can still handle it. For mech mods you'd generally aim for somewhere between 1 and 2 ohms per coil, this should usually be higher for a regulated device since it can boost the voltage to be able to deliver the desired power.
Edit: I should clarify since this doesn't seem to be mentioned much, you are concerned with the POWER delivered to the coil. This is determined by how many Amps your supply Voltage can push through the coils Resistance. How much power the coil will handle is a factor of its length (mW/mm2) and how well it is wicked which is a factor of its diameter. Too much power in a too short coil will burn your juice even with enough wick. Too much power in a too long coil will burn the juice at the center of the coil because liquid cannot be wicked to it fast enough.
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But if you wanted a 0.8 build with two coils in parallel each coil would have to be 1.6 ohms...which is about 12-14 wraps each on 28g kanthal. At some point that wire is a bit too thick for some decks. I have had people recommend 30 or 32 g for a dual coil build, just so you don't need so many wraps. So again, the coil toy says 9 wraps on 30g with get you to 1.6
Also, not to come off wrong but what battery are you using? It won't affect the taste but it will affect your safety at subohms.
Ok cheers I'll give that a go and see what happens.
I'm using a VTC5 battery
Also, not to come off wrong but what battery are you using? It won't affect the taste but it will affect your safety at subohms.
Ok cheers I'll give that a go and see what happens.
I'm using a VTC5 battery
Well built a duel 12 wrap coil and it's amazingthanks so much for your help the taste and cloud production is perfect, theres no burning and it's not melting my face off anymore
YAY!!! Glad it is working for you!
Just a bit of tidy up for anyone who reads this later....How dual coil builds work...
And if you are using a true multi-meter, don't forget to add the resistance of your leads to the target Resistance for each coil.
And if you are using a true multi-meter, don't forget to add the resistance of your leads to the target Resistance for each coil.
Welcome Damphyre!
Although it doesn't appear to be the case in this thread, something for members to keep in mind is that the wire gauge numbers we use in the US aren't universal. Someone from another country might not know what size 28 gauge Kanthal is.
American and British Wire Gauges
Although it doesn't appear to be the case in this thread, something for members to keep in mind is that the wire gauge numbers we use in the US aren't universal. Someone from another country might not know what size 28 gauge Kanthal is.
American and British Wire Gauges
Thanks Ocy!Theres 0.25mm and 0.3mm kanthal, theres no 0.28mm kanthal.
So even though he wrote it wrong, i understood he meant 28AWG.
So even though he wrote it wrong, i understood he meant 28AWG.
Parallel and dual coils lower your resistance idk if you understand that I'm getting a vibe that your confused about that please correct me if I'm wrong
Not sure who this is directed to exactly...Who are you addressing Gold?
The OP was "un"confused last night and built his perfect coil btw...
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