Why Kanthal?

[vapdivrr]

I can do that but with too many wraps, I have problems with the coil bending when I wick. I have big shaky hands.



At half the resistance I need to increase the wattage to get an equivalent vape. I guess that's just me and my method of vaping to keep me going.

So if using ss instead of kanthal, you could use the same number of wraps , so it fits your deck, but then the resistance is much lower, like half, and you feel you need twice the wattage? Seems backwards

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[Asbestos4004]

"Pedro Carvalho a material sciences expert with good background on metal structure, composition and degradation. Pedro also has deep knowledge on e-cigarettes and is well-known in the Portuguese vaping community and abroad."

Dry-burning metal coils: is it a good thing?

Oh.....Thaaaaaaat Pedro!

 

[zoiDman]

Oh.....Thaaaaaaat Pedro!

 

[Asbestos4004]

So if using ss instead of kanthal, you could use the same number of wraps , so it fits your deck, but then the resistance is much lower, like half, and you feel you need twice the wattage? Seems backwards

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Generally, with lower resistance, you need more power....My experience with SS doesn't support this theory. With my builds, I don't need as much power using SS. My resistance is nearly half of what it was, but it also takes less power to run it. Of course, I vape like an old man....

 

[vapdivrr]

Generally, with lower resistance, you need more power....My experience with SS doesn't support this theory. With my builds, I don't need as much power using SS. My resistance is nearly half of what it was, but it also takes less power to run it. Of course, I vape like an old man....

I agree, but in this situation it doesn't seem correct because the gauges are the same and the number of wraps are the same, the only difference seems that the ss has a lower resistance, which seems to me like less coil mass? I'm not much into ss, so maybe I'm wrong

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[KenD]

I can do that but with too many wraps, I have problems with the coil bending when I wick. I have big shaky hands.



At half the resistance I need to increase the wattage to get an equivalent vape. I guess that's just me and my method of vaping to keep me going.

It doesn't really work like that. If you check steam-engine you'll notice that identically wrapped ss and kanthal coils have similar heat flux and heat capacity at the same power level.



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[zoiDman]

I agree, but in this situation it doesn't seem correct because the gauges are the same and the number of wraps are the same, the only difference seems that the ss has a lower resistance, which seems to me like less coil mass? I'm not much into ss, so maybe I'm wrong

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If the Gauge of the Wire is the Same, and if the Number of Wraps/I.D. of the Coil is the Same, then the Coils have about the Same Mass.

Or at least Close Enough as compared to using Different Gauges/Wraps of wire.

 

[vapdivrr]

If the Gauge of the Wire is the Same, and if the Number of Wraps/I.D. of the Coil is the Same, then the Coils have about the Same Mass.

Or at least Close Enough as compared to using Different Gauges/Wraps of wire.

Fair enough, but then why would he feel like he needs twice the wattage? I believe him and if that's what he feels personally, I can't disagree with it, but just seems weird

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[zoiDman]

Fair enough, but then why would he feel like he needs twice the wattage? I believe him and if that's what he feels personally, I can't disagree with it, but just seems weird

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That I Can't tell you. Because we might be entering the Subjective Realm.

All I know is that I don't need to Double the Wattage to basically get the Same Hit with SS as I do with NiChrome 80 when the Gauge/Wraps/ID are the same.

In fact, I tend to stay Close to the Same Wattage even though the Resistance of the SS Coil is Lower.

 

[vapdivrr]

That I Can't tell you. Because we might be entering the Subjective Realm.

All I know is that I don't need to Double the Wattage to basically get the Same Hit with SS as I do with NiChrome 80 when the Gauge/Wraps/ID are the same.

In fact, I tend to stay Close to the Same Wattage even though the Resistance of the SS Coil is Lower.

Yep , so subjective is true..Thanks my friend.....

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[zoiDman]

Yep , so subjective is true..Thanks my friend.....

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Hey no problem.

BTW - Another thing to consider is just what is the Ohm Differential when comparing a Two Coils with different Alloys but the Same Physical Properties.

Consider a 0.3 Ohm 3mm SS Coil made from 26ga SS. You need a 4 Wraps.

Now keep the ID/Wraps the Same but use NiChrome 80. The Resulting Ohms is about 0.4 Ohms.

Not a whole lot of Ohm Change.

But now start with a 1.0 Ohm 3mm SS Coil made from 26ga SS. That would Need 14 Wraps.

But when I do 14 Wraps with NiChrome 80, the Ohms go to 1.5 Ohms. This is a Significant Increase in Ohms. Even though the "Mass" of the Coil is Unchanged.

 

[vapdivrr]

Hey no problem.

BTW - Another thing to consider is just what is the Ohm Differential when comparing a Two Coils with different Alloys but the Same Physical Properties.

Consider a 0.3 Ohm 3mm SS Coil made from 26ga SS. You need a 4 Wraps.

Now keep the ID/Wraps the Same but use NiChrome 80. The Resulting Ohms is about 0.4 Ohms.

Not a whole lot of Ohm Change.

But now start with a 1.0 Ohm 3mm SS Coil made from 26ga SS. That would Need 14 Wraps.

But when I do 14 Wraps with NiChrome 80, the Ohms go to 1.5 Ohms. This is a Significant Increase in Ohms. Even though the "Mass" of the Coil is Unchanged.

I'm far from an expert in this sort of thing, and while I agree with the coil masses being the same, it seems true to me, but just on the outside visually . Can they look visually the same on the outside, mass wise, but really the ss has much less mass because it's no where as dense? Therefore does have less mass. You guys that are much more versed in this are like thinking, what?

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[KenD]

Fair enough, but then why would he feel like he needs twice the wattage? I believe him and if that's what he feels personally, I can't disagree with it, but just seems weird

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He's simply wrong. It's a common misconception, people focusing too much on the resistance alone.

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[KenD]

I'm far from an expert in this sort of thing, and while I agree with the coil masses being the same, it seems true to me, but just on the outside visually . Can they look visually the same on the outside, mass wise, but really the ss has much less mass because it's no where as dense? Therefore does have less mass. You guys that are much more versed in this are like thinking, what?

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An ss316 coil will have a tiny bit more mass, but it's pretty much negligible.

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[zoiDman]

I'm far from an expert in this sort of thing, and while I agree with the coil masses being the same, it seems true to me, but just on the outside visually . Can they look visually the same on the outside, mass wise, but really the ss has much less mass because it's no where as dense? Therefore does have less mass. You guys that are much more versed in this are like thinking, what?

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I hear what you are Saying. But I think that the Difference in Mass in this case Isn't significant.

 

[Oomee]

The lower the resistance of your load coil, then the more the resistance of the 510 and atomiser current path come into play.
Couldn't possibly tell you how much(guess probably below 10%), and am not in the mood to go measuring mine at the moment.

 

[vapdivrr]

He's simply wrong. It's a common misconception, people focusing too much on the resistance alone.

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I didn't really want to say that, but I agree 100 percent with you

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[vapdivrr]

Generally, with lower resistance, you need more power....

I know you said generally, but we have 2 coils, both 26g @ 3mm ID, one @ .5 and one @ 1.0 ohms, which one requires more power? Well the higher resistance coil does



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[zoiDman]

I know you said generally, but we have 2 coils, both 26g @ 3mm ID, one @ .5 and one @ 1.0 ohms, which one requires more power? Well the higher resistance coil does



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See that's what makes this So Difficult to Pin Down. Lots of Combinations and Permutations.

I say just put a piece of Black Electrical Tape over the Mod's Screen. And just use the Up/Down Buttons until one gets a Hit they Like.

 

[Asbestos4004]

I know you said generally, but we have 2 coils, both 26g @ 3mm ID, one @ .5 and one @ 1.0 ohms, which one requires more power? Well the higher resistance coil does



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I would agree....Hence the word 'generally'. Generally, when low resistance comes up, it's either thicker wire, fancy builds or dual coils....All of which require more power.
But, yes....I'd agree with you 100%. 2-26ga, 3mm coils. 1@ .5 and 1@1 ohm....The .5 would take less power to light up. I guess....I hate these conversations.