SS316L Resistance Flux and Coil Building

[nathanstokes]

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Resistance changes will be irrelevant on mechs so not worth considering. SS316l has a lower resistance per metre so you need less wraps or higher AWG to reach your desired ohm. SS is fast ramp up as is Ni80 making both ideal for mechs.
Simple 5 wrap in both materials in the screenshots.

Why would resistance change be irrelevant on a mech? Surely mechs and TC vaping are where it would be relevant, and wattage mode on a regulated mod would be the only time it would be irrelevant, as the board would alter the voltage and current drawn from the battery to produce a consistent wattage. Surely on a mech using SS coils, due to resistance flux, nothing is being held as a constant, so where you start (vis-a-vis amperage drawn and safety) and where you end up (vis-a-vis power produced) in any given draw would matter?

What am I missing?

 

[nathanstokes]

I used to make all kinds of exotic coils till I realised less is more. These days I just use 24awg brochrome on my mechs and never looked back. My tools mostly gather dust in the cupboard these days. I think back to all the time wasted and just smile to myself, albeit it was quite fun at the time.

It's horses for courses, I guess. Around this time last year I paralleled some plain 24 and 26 gauge Ni80 (7 wraps, around 0.15-6 Ω iirc), popped them in my Kennedy and decided I still preferred multi-cored claptons/ aliens in DL builds, and a simple clapton for MTL.

As long as we're all happy and not smoking, everything's great!

 

[nathanstokes]

Yup, my post was in no way intended to dissuade the OP from his venture, just saying sometimes the effort doesn't translate into a life-changing vape

And I completely agree that it's not at all a life changing difference!

 

[Tootlevape]

So if I'm thinking through this correctly, it's really difficult to know how resistance will change in any given set up (given our usage of the material) as the resistance flux will be dependent on contributing factors, namely airflow, draw, etc. and how this effects the temperature of the coil.

So if I popped the DL coils I mentioned above in an atomiser that was quite restricted, there would be less airflow to them, they would receive less cooling from the draw during vaping, and thus they would have greater resistance change than if I put the same coils in a really wide open atty with tonnes of airflow.

Am I understanding that correctly?

Assuming the two atties are used on the same mod at the same power setting then yes.

 

[Mitz]

You're over thinking things. Resistance change is minor and temporary. The resistance goes back to normal as quickly as it goes up a fraction. It's not something you need to try and factor in to building coils. You're not going to notice any difference in your vape on a mech mod due to fluctuations in resistance. You build your coils for a starting resistance, not for a given resistance when the coils are hot.

 

[nathanstokes]

Assuming the two atties are used on the same mod at the same power setting then yes.

Ah, should have said, all other things being equal. Thanks for the clarification.

 

[nathanstokes]

You're over thinking things. Resistance change is minor and temporary. The resistance goes back to normal as quickly as it goes up a fraction. It's not something you need to try and factor in to building coils. You're not going to notice any difference in your vape on a mech mod due to fluctuations in resistance. You build your coils for a starting resistance, not for a given resistance when the coils are hot.

Good to know. The overthinking comes from wanting to make sure I'm not building unsafely for any given battery, but at the same time, not ending up with a weak, unsatisfying vape. If resistance doesn't change all that much, then, yep, will play around in wire wizard till I get a roughly equivalent resistance to what I'm using for NiChrome builds.

Thanks for the help.

 

[nwhornet]

Why would resistance change be irrelevant on a mech? Surely mechs and TC vaping are where it would be relevant, and wattage mode on a regulated mod would be the only time it would be irrelevant, as the board would alter the voltage and current drawn from the battery to produce a consistent wattage. Surely on a mech using SS coils, due to resistance flux, nothing is being held as a constant, so where you start (vis-a-vis amperage drawn and safety) and where you end up (vis-a-vis power produced) in any given draw would matter?

What am I missing?

Resistance changes in SS, Ti & Ni200 are used by the mod when running in temp mode. SS is the only TC wire that can be used in power & temp modes. In power mode the mod knows the starting resistance but power applied is down to the user. If you set it to 50w the mod will deliver 50w throughout the length of the draw. In temp mode power is set as a max & temperature is set to control the heat generated. As before, if power set to 50w & temp to 230c then the mod will deliver an initial power of up to 50w but then throttle back on the watts to control the temp through the resistance changes. On a mech your defining how much power is delivered by the resistance (cold). Any fluctuation in resistance is irrelevant as the battery just keeps providing the watts demanded until the battery has lost enough charge to produce a weaker vape.