why do people build super low ohm on a vv or vw device?

[Robert Cromwell]

Why? Marketing selling new stuff plays a part. Bragging rights on vaping a .04 ohm coil? Saw a Vid of Big Lou doing just that today. .04 on a mech mod....

 

[IXIShogunR1]

Most regulated device that advertise 100/150 watts can only achieve this within a certain resistance range. I think the sig 150, for example, had to have a build at .6 or less to use 150 watts. I'm sure there are other reasons as well.

this would be one reason, another reason is heat flux so my std everyday build is a dual coil 11 wrap 26ga setup... this comes out to .6-.67 ohms at 50 watts where i keep it the heat flux is around 184mw/mm2
now same wire, with a dual coil at say 1.2ohms which is now 20ish wraps has a heat flux of about 92 mw/mm2 at 50 watts, to get the same results as the lower ohm build i would have to kick it up to 100 watts.

and if you look at that a dual coil .6 ohm build is 2 1.2 ohm coils which is about where most people would put a single coil

now if you put this at a single coil build with 26ga (once again my everyday build wire) to get the same results at 50 watts i would need a single 20 wrap coil at about 2.4 ohms

this is all calculations from steam engine that i'm using to get these numbers

the way i look at it, Mech mods = build for the power you want
VW/VV mods build for the heat flux you want

now i saw mention of thinner wire.... so lets take a look

28ga dual coil setup for the same effect of heat flux is 13 wraps for 1.2 ohm setup

this is all for a heat flux around 180-189 mw/mm2 at 50 watts

thicker wire is always going to result in lower ohms.... i prefer the thicker 26ga its got a good ramp up time, and more surface area

 

[edyle]

yes your right but does anyone vape at 150 watts on a regular basis.
I tried to vape a friends device at 90w and my throat thought I was vaping molten lava so god knows what 150w is like

If you vape a 20 watt coil at 90 watts it's going to burn.
If you want to vape at 90 watts you need to make a coil that can take 90 watts.
The steam engine calculator can help work it out.

 

[lovemytank]

volts squared divided by resistance equals watts or heat. I find a lower resistance coil gets me where I want to be. I have tried several drippers, tugboat, had matter, dringer and another but all are hard to fill while driving and tend to leak on me. Perhaps I will find the magma amazing but for now I love my subohm clearomizers.

 

[jdawg111]

Have you ever seen a 1.5ohm nickel coil?

That is awesome! Lol I never knew mickle coils took that many wraps to get a resistance like that

 

[stevegmu]

It's not cool if it's not sub-ohm...

 

[paulparnham]

My .2 coils deliver much better taste than .5 or 1.2. Also I look really cool and do not need to sag my pants as low when in public.

lol