Stacks are usuall series so me..id go .3+What's the recommended ohm to run in a stack configuration?
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THANK YOU!! I'm working on a Kanthal build now. Trying for .4 or .35. I just don't get the flavor with the straight round Kanthal build I have in it now.Find out the continuous drain rating of your batteries. Using an Ohms law calculator or the formula resistance = voltage divided by current (amps), plug the cdr of a single battery in for current and use 8.4 as voltage. The resulting resistance value can be considered the minimum resistance value at which you should build your coil and still maintain some safety headroom.
Example, with 30 amp continuous draw rated 5 leg iJoy cells, 8.4 volts/30 amps = 0.28 ohm.
Now, recommended? That’s for you to determine. My series builds in a stacked tube I keep as close to the minimum resistance I can build without exceeding CDR. Makes a toasty vape though, and you may prefer something less rowdy.
I use Kanthal in my series builds as well. Kanthal = less coil mass = faster ramp time.
Nice stack btw!
I use Kanthal in my series builds as well. Kanthal = less coil mass = faster ramp time.
Kanthal has a greater wire volume/“footprint” than other wire materials at the same resistance. So if we make a coil for a desired resistance of, let’s say 0.2 ohm, it’s physical mass will be much smaller than a 0.2 ohm coil made of say NiCr80. The reduced wire mass heats up much faster than would the NiCr80 could as the result of its smaller size. It is true that if we took two very small lengths of wire of identical wire masses, one of Kanthal and one of NiCr80 the NiCr80 wire would heat up faster, but they would be different resistances, and the Kanthal would have greater resistance.That's a sweet mod op. I'm jealous af.
I don't understand this part of your post. Kanthal has the slowest ramp up of the 3 main wire types. I use kanthal on my series mods and ramp up is never an issue, but I don't understand how you get less coil mass with kanthal. If anything my kanthal series coils are bigger than if I used n80 because I can use thicker gauges and more wires in parallel.
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That's a sweet mod op. I'm jealous af.
I don't understand this part of your post. Kanthal has the slowest ramp up of the 3 main wire types. I use kanthal on my series mods and ramp up is never an issue, but I don't understand how you get less coil mass with kanthal. If anything my kanthal series coils are bigger than if I used n80 because I can use thicker gauges and more wires in parallel.
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Nailed it.The way I understand it, ramp up/down is about mass not resistance.
If you had a target around .27 you'd have (roughly) 4 wraps on a 3mm id using 22g KA1. Same 22g wire only Ni80 instead of KA1 you're going to need about 6 wraps at 3mm id.
You're going to have more metal in the coil using a lower resistance alloy.
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I’m currently running a .45 on the Hohm Work batteries.
Ok I never thought of it that way or looked at the heat flux of 0.x ohm ka1 coil vs 0.x ohm n80 coil. I always just assumed that the hurdle of kanthal's higher heat capacity would make it more efficient to use n80 for ramp up.Kanthal has a greater wire volume/“footprint” than other wire materials at the same resistance. So if we make a coil for a desired resistance of, let’s say 0.2 ohm, it’s physical mass will be much smaller than a 0.2 ohm coil made of say NiCr80. The reduced wire mass heats up much faster than would the NiCr80 could as the result of its smaller size. It is true that if we took two very small lengths of wire of identical wire masses, one of Kanthal and one of NiCr80 the NiCr80 wire would heat up faster, but they would be different resistances, and the Kanthal would have greater resistance.
In our application, wire mass is a more significant factor in heat flux than is conductivity of the material simply due to the amount of current we’re applying through the circuit path.