I think 600F is the melting point for nickel so I am not sure if that's pushing it a bit but as always don't listen to me I am an idiot with technical stuff.
Melting point for pure nickel is 2651 F
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Melting point for pure nickel is 2651 F
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What are the performance differences in Ni200 28g and 32g?
I mean does the resistance go down given the same length but thicker nickel, like kanthal?
I mean does the resistance go down given the same length but thicker nickel, like kanthal?
28g vs 30 or 32g Ni200:
I'll have to try it for myself, but wondering about other aspects as well; i.e. thicker can mean easier to hold a cylindrical shape, and combine that with lower resistance = might be good for dual coils.
One more; does thicker wire carry more heat = potentially more wick burn due to slower cool-down between firings if using higher temp setting?
Oh! see, that is why I say don't listen to me haha. I thought someone 20 pages back said if you heat up the coils don't do it above 600F but I probably read that wrong. Got a hold of the guy?
Well, it will (at least on paper) retain heat longer than thinner wire while under the same conditions, simply because it has more mass (assuming the same resistance).
However, since the DNA40 tracks resistance, it will already "know" that the coil is hot because its resistance will be higher than a comparable coil that hasn't been used and allowed to cool to room temperature.
I'm using 28 right now, and happily chain vaping with no issues.
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Oh! see, that is why I say don't listen to me haha. I thought someone 20 pages back said if you heat up the coils don't do it above 600F but I probably read that wrong. Got a hold of the guy?
Might have something to do with some sorta reaction that occurs, not necessarily melting. I have no clue. I'm about as knowledgeable on nickel as I am on the life cycle of some mystical deep sea creature hahahah.
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Just remember that if you are thinking dual coils paralleling a 1 ohm coil with a second 1 ohm coil give you a total of 0.5 ohms.
And yes heavier wire hold more heat longer.
About the wire thickness:
A thicker wire coil will have larger surface area with the same number of wraps which is good. But the coil is also longer. I doubt it will affect wick burn, it would just stay hot a little bit longer. And the fact that thicker wire has lower resistance would be more of a problem with dual coils to hit > 0.10 ohm. That's why I'm trying to get by with AWG30.
I'm going to try twisted 32. Might be stable enough and has a bigger surface area that thicker wire with the same resistance per length. But I've been too lazy to try it yet
A thicker wire coil will have larger surface area with the same number of wraps which is good. But the coil is also longer. I doubt it will affect wick burn, it would just stay hot a little bit longer. And the fact that thicker wire has lower resistance would be more of a problem with dual coils to hit > 0.10 ohm. That's why I'm trying to get by with AWG30.
I'm going to try twisted 32. Might be stable enough and has a bigger surface area that thicker wire with the same resistance per length. But I've been too lazy to try it yet
exactly. but good luck getting a 1 ohm coil with nickel. I'd probably aim for 2x .3 coils = .15 ohms
Oh! see, that is why I say don't listen to me haha. I thought someone 20 pages back said if you heat up the coils don't do it above 600F but I probably read that wrong. Got a hold of the guy?
Nickel used at 700 degrees or more tends to lose iron atom. Which if I remember right changes the hardness of the wire making it fragile. That may not be what happens exactly but it does lose iron atoms which leave the metal ductility changed. Which is probably why Evolv temp limit is 600 degrees.
Here a question.
Given the same juice flow and air flow, should we get better or worse performance with a 0.90ohm coil over a 0.15ohm?
Given the same juice flow and air flow, should we get better or worse performance with a 0.90ohm coil over a 0.15ohm?
Ni200 changes resistance as it gets hotter so not really comparable. Apples to oranges. From what I've read though, Ni200 gives a great vape. Some think better than Kanthal A1.
Well apparently it is not 100% pure... anyway that is what the article said (no I don't have a link). It also mention several other things in Ni200 in the 0.0X% range and iron was one of them.
If I can stumble on it I will link back to it.
lets just say a none spaced 40wrap, 4mm ID, about 2ish cm long with 30gauge wire. I honestly don't know what I mean by performance I just wonder if we have such a big range how a 0.15 would differ in "performance" over a 0.90ohm coil or if it would just behave the same.
Now that I think about it. If the ohm really doesn't go up much I wonder how a 5mm ID coil would work on a RDA.
Now that I think about it. If the ohm really doesn't go up much I wonder how a 5mm ID coil would work on a RDA.
What's the geometry of those coils? Surface area? Mass? Oh, and what do you mean by "performance"?
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