coil ohm vs wattage

[ozsa]

Hey guys, please enlighten me on this subject.
If I use the same wire, (SS 316L) 4 wraps vs 8 wraps, the 8 wrap one needs double the wattage to heat up evenly right ? So by going with this logic, how comes 0.15ohm coils are used at 100W and the 1.8ohm coils at 10-12W ? Is it because SS and ti/ni/ch wires require more energy to heat up than regular old kanthal or what's the deal here? Just don't get the whole low ohm = high wattage when it should be low wattage as well.

 

[Brad Mitchell]

I'm assuming the 1.8 isn't the same wire as the .15. That being said the 1.8 might be a much smaller wire which takes less wattage to heat up than the other wire.

 

[HondaDavidson]

Because most mods don't put out enough voltage 13.5v to get 100 watts from a 1.8ohm coil.

And in an unregulated mod you have to go to lower ohm coil to increase wattage.

Somebody with a 3 or 4 batt series Variable Voltage mod.. might be building at 1.8 ohms and running 100 plus watts..

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[ozsa]

So for example 5wrap same diameter kanthal and SS needs the same wattage or kanthal needs less ?

 

[nightshard]

The amount of wattage needed is defined by your personal preference, the mass and material of the coil, the type of build, size of the atomizer chamber and amount of airflow, so setting wattage based on number of wraps only is not the right way to address it.

 

[VapingMurse]

Here's how I was explained wattage for resistance. Think about a PVC pipe being filled with water.

A smaller size pipe doesn't need as much water to have pressure.
Now is we think about coils, a high resistance coil, for example a 1.5 ohm coil, the higher resistance of the coil means less power is needed to travel through the coils to heat it up.

A larger size pipe needs much more water to fill the pipe and still have some pressure behind it.
For a lower resistance coil, for example a 0.10 ohm, you need more power to run through the coil to heat it up

Hopefully that analogy makes sense!

Vape On!
Murse

 

[ozsa]

Here's how I was explained wattage for resistance. Think about a PVC pipe being filled with water.

A smaller size pipe doesn't need as much water to have pressure.
Now is we think about coils, a high resistance coil, for example a 1.5 ohm coil, the higher resistance of the coil means less power is needed to travel through the coils to heat it up.

A larger size pipe needs much more water to fill the pipe and still have some pressure behind it.
For a lower resistance coil, for example a 0.10 ohm, you need more power to run through the coil to heat it up

Hopefully that analogy makes sense!

Vape On!
Murse

It makes sense but in practice it works the opposite if I make a 26awg SS 316L coil with 4wraps, it will be about 0.3 ohm and I can vape it easily at 20W, if I make 6wraps it becomes about 0.5ohm and need to fire at a lot longer on 20W to have any kind of vape. So the higher the ohm the more wattage it needs to heat up in practice.

 

[VapeVillian]

Ohms doesn't really have a set table for the perfect watts. Ohms does have a direct correlation between volts and amps, but this isn't what I think you're looking for.

In your example, you have 4 wraps if 26g 316L @ .3ohms. Now, at 10W, it will light up pretty quickly. When you add 2 more wraps, you now have to put more W into the coil to heat it up at the same pace.

If you look at a 1.8 ohm coil, you can see a few things. If might be 4 wraps w/ 30g kanthal or it could be 6 wrap fused Clapton with 2x 32g and 38g outer with kanthal. So, with the simple 4 wrap you'll need very little wattage. The fused, you'll need more to heat it up the same.

To sum it up, the bigger the wire and/or the more amount of wire, the more wattage you'll use.

As for how quickly wires heat up, it goes from quickest to slowest, Ni200, SS 316-430, Nichrome80, and Kanthal.

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[ozsa]

That's what I was looking for, Kanthal heats up slowest! thanks for the info.

 

[VapeVillian]

That's what I was looking for, Kanthal heats up slowest! thanks for the info.

Np

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[ozsa]

Alright so I made my first coil on the aromamizer supreme 7ml, double 7wraps 24awg SS 316L, with 4mm diameter and it reads 0.2ohm, my poor old istick 50w can barely handle it, at 40W but it wicks like crazy, every time I hit it, I can see the bubbles coming out, damn so good. The taste however is less than on my old crown 0.5ohm factory coil heads, I guess I need more wattage, can't wait my new 220w alien mod.
btw, i broke the base o-ring at first install, tried to screw the base with the bottom cap on the mod to the tank and it broke, from now on I will only stick the base into the tank and then screw the bottom tank.

 

[VapingMurse]

Alright so I made my first coil on the aromamizer supreme 7ml, double 7wraps 24awg SS 316L, with 4mm diameter and it reads 0.2ohm, my poor old istick 50w can barely handle it, at 40W but it wicks like crazy, every time I hit it, I can see the bubbles coming out, damn so good. The taste however is less than on my old crown 0.5ohm factory coil heads, I guess I need more wattage, can't wait my new 220w alien mod.
btw, i broke the base o-ring at first install, tried to screw the base with the bottom cap on the mod to the tank and it broke, from now on I will only stick the base into the tank and then screw the bottom tank.

Smaller diameter usually equals more flavor. Try a 3mm next time

 

[ozsa]

Smaller diameter usually equals more flavor. Try a 3mm next time

oh really? I was thinking to go even 5mm since there is still space in the base. Curious how long these wicks will last, it sucks juice like a beast, while I tested it I vaped my usual daily amount, will have to lower nic soon.

 

[HondaDavidson]

Smaller diameter usually equals more flavor. Try a 3mm next time

Yeah I would also go to 3mm... for more flavor. If i wanted to maintain the ohm rate I would also add a wrap.. basically I would want the same size coil mass and length of wire wise.


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[VapingMurse]

Yeah I would also go to 3mm... for more flavor. If i wanted to maintain the ohm rate I would also add a wrap.. basically I would want the same size coil mass and length of wire wise.

Good point. Changing diameter usually doesn't alter the wraps much, but try using steam-engine and plug in different size wrap diameters (2nd to last input) and see how much your wraps change.

Also, this is subject but most would I agree I believe. If you're vaping a high nicotine level, you'll want to build a higher ohm coil. Lower ohms and high power with a high nic level (anything above 6) will feel like the devil is pissing in your throat. It makes me cough every time I use high nic on a high watt device. Again, all subjective and completely customizable, but that's my input on it.

Vape On!
Murse

 

[Rabbit Slayer]

1.8Ω at 15W = 5V
.15Ω at 15W = 1.5V