What's the deal with sub-ohm?

[aldlevine]

Now, I'm relatively new to mods, but something's been bothering me. There seems to be so much hype over sub-ohm coils, which in my opinion would only be useful when you have a mech mod with a direct connection to a 3.7v source (no major circuitry to worry about drawing too much current). But using a regulated power module to control your voltage seems to throw a wrench in that approach.

Take your 0.8 ohm coil and pass 3.7v through it and you're drawing 4.625A, that's well over the maximum of most cheap off the shelf power modules to deliver ~17w. Now assume you can find a 2A power module that can deliver up to 12v from a 3.7v in (there's plenty out there), just some quick math and you know you can max the thing out at 24w all within the spec of a cheap $5 module. The only caveat is you need a 6ohm coil. You can take this even further by raising the voltage and resistance, a lot of cheap step up regulators operate up to ~30v. I've never gotten into building coils myself, but I have to imagine getting super high resistance is possible (considering a 100w lightbulb's coil is ~144ohm).

My point is that it's much easier and cheaper to build a power supply running high voltage/low current than low voltage/high current, so what's keeping us from building high resistance coils to be powered with a relatively cheap high voltage step-up regulator? There must be something I'm missing.

 

[93gc40]

Because vaping is not about the power and voltages.. It is about fitting a coil with maximum surface area into a very small space. The power requirements are just a means to the end. Also people are afraid of high volts numbers, even though its not the voltage number they should be concerned with its the amp number.

 

[tj99959]

What's the deal with sub-ohm?

The word "more" seems to stand out from the crowd of possible adjectives. Everyone always wants "more" even though low resistance has little to do with "more" in the overall scheme of things.

 

[aldlevine]

In theory though, if you could find the right material to build your coil out of, you could build smaller and cheaper mods that are very powerful and efficient (You can typically get 96+% efficiency if you keep your load under 1A). I feel like someone must have thought of this, so I'm wondering what's the deal breaker here?

 

[TFL!]

If you go to Steam Engine | free vaping calculators in coil wrapping and play with the numbers including heat flux you will find some of your answers.
Aslo check out this post http://www.e-cigarette-forum.com/fo...ughts-about-sub-ohm-latest-vv-vw-devices.html

 

[tj99959]

In theory though, if you could find the right material to build your coil out of, you could build smaller and cheaper mods that are very powerful and efficient (You can typically get 96+% efficiency if you keep your load under 1A). I feel like someone must have thought of this, so I'm wondering what's the deal breaker here?

Less money to be made!

Sub ohmers go through a ton of juice, only at a lower nic content. The most expensive component of juice is the nicotine, so they pay more for less.

We've known how to get a great vape from low amps forever. 1a would be a bit tough to do, but 2a is very doable.
Fact is, I'm vaping comfortably at 1.36a right now. (3.1 ohm @ 4.2v)
And, I really do get 10-11 hours vape time out of a 1100mAh 18490 ...... and my local supplier hates me

The mod I'm using is 4 years old, so is the tank I'm using. I go through 3-5ml of DIY juice/day. A pair of batteries lasts about 3 years. See what the problem is from a business point of view?????

 

[Balazs Jarosi]

Well, I'm a sub-ohmer and I make my own juice. Since I can get VG and PG for pennies (in Hungary) which is medical grade pure and I dont add nicotine at all I dont think that I'm throwing out money at the window. Especially that it still costs 1/10 of which I've smoked away in real cigs. and it chucks like a dragon

 

[tj99959]

Well, I'm a sub-ohmer and I make my own juice. Since I can get VG and PG for pennies (in Hungary) which is medical grade pure and I dont add nicotine at all I dont think that I'm throwing out money at the window. Especially that it still costs 1/10 of which I've smoked away in real cigs. and it chucks like a dragon

But why the need to "chuck like a dragon"?

 

[aldlevine]

Thanks for the link! That verified most of my suspicions and taught me a few things about surface area (didn't think about this aspect). You're right, with the common materials you can't really get the resistance high enough and still function properly. I still maintain though, that with the right wire material, it is theoretically possible to get a high resistance build with the right properties, but I'll leave that to the materials engineers.

For now I'll continue with the highest resistance I can find and deal with the fact that my regulator needs to handle a larger load. Thanks!

 

[Mellowbuzz]

But why the need to "chuck like a dragon"?

Because dragons are cool "bro"....Raaaawwwrrr!

 

[BlueSnake]

This whole topic cracks me up. No one blew clouds when they smoked. I will never get it.

 

[tj99959]

This whole topic cracks me up. No one blew clouds when they smoked. I will never get it.

You must have used different cigars than I did.

 

[Troll from behind]

Well, you couldn't might be one reason?
Tbh those huge clouds ought to tell people we're not smoking any more.



Sent from my iPhone using Tapatalk

 

[BI00dR3D]

I believe if something like "clouds" keeps some people interested and buying more products in their journey it can only be good for the community in a whole. I like to build for the fun of it even though I did not blow clouds while on cigs it is something that I enjoy doing at home. However, if all people were the same then we would not have as many options and new products would not be made.

 

[Thrasher]

Your newness is showing, before regulated mods became popular there was high resistance, high voltage vaping in the 6- 8 v range

But why the need to "chuck like a dragon"?

What really really amuses me about this latest trend is super high powered ultra low ohms and clouds aren't interdependent on each other yet everyone thinks they are.

Check out rips magma dripper review. Look at the volume he's putting out on a standard 1.2 ohm single coil running 17 watts that video made me get one, duals with ribbon at 1 ohm will gag you on a mech.


There will always be a group for it, like everything in vaping. But for many it will wear thin and some will go to other methods again. I'm a die hard geni user, we still exist in numbers, but the latest dripping craze its what's selling so you see 30 drippers for sale to every one geni. But still new ones keep coming out.

For that matter egos are still selling as well. It all has a place and its followers.

 

[vapero]

I'm a sub ohmer as well but I have thinking on much higher ohms and voltage for some time...

imagine an incandecent bulb, you could run 24v and make an accordingly coil to give you 100w, but concluded that you will need a much more thinner wire to achieve it and it wouldn't stand much stress and thus break. interesting idea though

 

[Oberon75]

This whole topic cracks me up. No one blew clouds when they smoked. I will never get it.

Those clouds are the only thing that keep me from picking up a cigarette. And it's not really about the clouds. It's the intense flavor and nicotine blast I cannot get from a traditional setup.

Sent from my HTC One M8 Harman/Kardon edition

 

[RandyF]

I think this is what you are talking about.

 

[juicynoos]

In theory though, if you could find the right material to build your coil out of, you could build smaller and cheaper mods that are very powerful and efficient (You can typically get 96+% efficiency if you keep your load under 1A). I feel like someone must have thought of this, so I'm wondering what's the deal breaker here?

If I may add my to the OP's very interesting question regarding why vaping mods are created to function using low voltage and not adapted more along the lines of his suggestion, this document from a post on a battery question I had, answered by TaketheRedPill, may help to explain about the 'hows and whys'.

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20100037250.pdf

Lithium-Ion Battery Hazards | content content from Fire Protection Engineering

http://www.horizonhobby.com/pdf/EFL-LiPoSafetyWarnings.pdf

My gratitude to TaketheRedPill for posting these informative links, hope you don't mind that I shared them here

 

[BlueSnake]

Those clouds are the only thing that keep me from picking up a cigarette. And it's not really about the clouds. It's the intense flavor and nicotine blast I cannot get from a traditional setup.

Sent from my HTC One M8 Harman/Kardon edition

So are saying you couldn't have gone form smoking to vaping a year ago since we didn't have all the sub ohm crap?

My real worry is that with more exploding mods vaping will be severely regulated. And it's going to happen more and more since there isn't much in the way of warnings on the plug & play sub ohm crap.