Quick question, coil heating time.

[Vault]

As the header suggests I`m just curious about the heating time for different coil wire diameters and resistances.
I notice some guys talking about the "time lapse" between hitting the button and the coils heating so please forgive me asking a basic question

Is this down to the resistance or the thickness of the wire? Or is it linked?
Eg 32awg being a higher resistance but a thinner wire than..say..28awg? I can see how a thinner (32)wire would heat faster (less metal to heat) but being of higher resistance does this mean that it also takes more time to glow?
Or does resistance have nothing to do with it and it`s simply the wire diameter?
All taking into account identical voltage put through of course.
Thanks.

 

[Ec!g]

Those parameters are only part of the equation.
Someone else will chime in with a more complete answer.

The type of wick and it's ability to transfer both heat(as in say cotton vs stainless rope) and liquid play a huge roll in the time it takes the coil to come to optimal temperature and remain there.

The device the coil is installed in matters also, mostly for heart transfer and internal resistance of material.

The liquid viscosity is again a big factor as this aids more or less in the cooling of the said coil.

And last but by no means least, the amount of coils wrapped and how well(even) they are. Hot spots turn red almost instant even when well lubricated.

 

[vapdivrr]

good points made from above, and like said there is a lot to it. basically the more resistance in a wire the hotter it will be. with this answer you can cover a lot of your questions. same gauge wire, one longer then the other, supposedly, the longer one, the one with more resistance will be hotter. two gauges of wire, same length, the one with the higher resistance will be hotter, which would be the thinner wire.

 

[st0nedpenguin]

I like to stick to a 4 wrap of whatever gauge I'm using, anything higher and it just takes too long for the coil to get up to speed.

 

[Commie]

Yup. That is why the sub-ohm coils are only made with thicker wire. 32gauge and thinner would just overheat almost instatnly and pop.

You also have to consider the thermal capacity of the wick itself. If you use SS wick, then the coil is spending quite a bit of energy to heat up the wick as well as itself. With silica and cotton wicks, it doesn't have to, at least not to the same extent.

So, if you want fastest responding setup, try 32gauge microcoil on a cotton wick. That'll light up right away. My 28 gauge SS wick setup takes good 3 seconds before it starts producing decent vapor.

The other side of the coin is vapor itself. Thinner wire has less vaporizing surface, so it generally produces less vapor.

 

[Vault]

Thanks for the answers and I can see there are a lot of variables.

So I`ll experiment and take some out of the equation.
I`m using a VV/VW protected mod (vamo) so like the resistance in the 1.4-1.7ohm range.
I`m using 2mm Ekowool on genesis type attys (AGA and RSST).
The next stage is to wrap a couple of coils with the same resistance but out of different gauge wire and see which works best in terms of vapour and reaction time.
My suspicion is that a 9 wrap of 30awg will produce more vapour than a 5 wrap of 32awg but will react slower.
Again given the same resistance and voltage input.
In that case the more favourable set-up would be the 9 wrap 30 but with a higher voltage (juice depending) to speed reaction.
Just thinking out loud

 

[pdib]

If you take that "9 wrap" and bunch the loops together, you might just get about the same reaction time as a spread out 32g.