Resistance and Power

[Simebaby]

Something I’ve been meaning to ask for a while.
I vape purely MTL around 13-15W. The wire I use varies (though very rarely anything other than round wire), but certainly ohms can be anything from 0.5 to 1.
I use regulated mods only - so my understand was the resistance of the coil means very little, because whatever happens the power to the coil is 13W (or whatever).
However I’ve seen in numerous reviews etc people say that an atty performs much better with an mtl coil of 1ohm. So am I missing something. I get that there might be sutble differences between wire types but I would have thought 13W is 13W no matter the resistance of the coil.
Am I completely wrong?

 

[hack400]

Something I’ve been meaning to ask for a while.
I vape purely MTL around 13-15W. The wire I use varies (though very rarely anything other than round wire), but certainly ohms can be anything from 0.5 to 1.
I use regulated mods only - so my understand was the resistance of the coil means very little, because whatever happens the power to the coil is 13W (or whatever).
However I’ve seen in numerous reviews etc people say that an atty performs much better with an mtl coil of 1ohm. So am I missing something. I get that there might be sutble differences between wire types but I would have thought 13W is 13W no matter the resistance of the coil.
Am I completely wrong?

Ohms law. Higher resistance at the same watts means less volts or current.

 

[rew]

Depends on the thickness of the wire for me. The thicker the wire the longer the ramp up time. The sweetspot for me is 27g kanthal at around 1 ohm. Perfect at 13 watts.

 

[Simebaby]

Ohms law. Higher resistance at the same watts means less volts or current.

But would that affect the vape itself? If the same power is being put through the coil?

 

[hack400]

But would that affect the vape itself? If the same power is being through the coil?

Higher resistance wire takes less time to heat up at the same wattage. Try vaping on a 0.1ohm coil at 15W. Won't get much out of it

 

[Mr Ripple]

But would that affect the vape itself? If the same power is being put through the coil?

Put two saucepans on identical hobs with identical contents and identical heat sources.
One pan is 10mm thick and one is 5mm thick.
They'll both get the contents up to exactly the same temperature eventually but one will be more efficient at doing so.

 

[Simebaby]

Higher resistance wire takes less time to heat up at the same wattage. Try vaping on a 0.1ohm coil at 15W. Won't get much out of it

I sort of get that - but if I put figures of 0.5ohm and 1ohm into steam engine, the 0.5ohm coil has a much lower heat capacity - which I thought meant it would heat up quicker?

 

[hack400]

I sort of get that - but if I put figures of 0.5ohm and 1ohm into steam engine, the 0.5ohm coil has a much lower heat capacity - which I thought meant it would heat up quicker?

Screen prints so we can see which orange you're comparing to an apple

The same material in the same configuration (wraps, id etc.) will lower the heat capacity as the AWG goes up (wire gets thinner).

 

[Crispycritters]

Statements like 1 ohm coils give the best MTL vape really should be proceeded by 63 out of the 85 people we surveyed stated that...

I think the mass of the coil is relevant - a KA1 coil of 1 ohm may be good at 12 to 14 Watts, if an identical coil is made from SS316L using the same gauge wire it will have about half the resistance but will have the same mass, so it should also be good at 12 to 14 watts.

 

[Simebaby]

I think the mass of the coil is relevant - a KA1 coil of 1 ohm may be good at 12 to 14 Watts, if an identical coil is made from SS316L using the same gauge wire it will have about half the resistance but will have the same mass, so it should also be good at 12 to 14 watts.

I think this is what I’m driving at - albeit poorly.

E.g.


I’d expect to see very little difference in vape between those two coils on a regulated mod.