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**Sub-Ohm Vaping** Discussion, Safety, Battery Info, & Warnings

Discussion in 'Sub-Ohm' started by Technonut, Sep 8, 2013.

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  1. Salt&PePPer

    Salt&PePPer Super Member Verified Member ECF Veteran

    Jul 7, 2012
    Bakersfield


    Quality Control is something I find the Chinese Manufacturer's lacking in Severlly! It is also one of the reasom's the Chinese can get you what you want for cheaper... due to the lack of QC! Their made Items wouldn't come anywhere close in passing the German Manufacturer's QC control's. I'm thing Porsche and Mercedes here.
     
  2. Salt&PePPer

    Salt&PePPer Super Member Verified Member ECF Veteran

    Jul 7, 2012
    Bakersfield
    And to add on: years ago before LiOn in RC car racing many re-sellers would match their cells to be within certain parameters, and what those parameters are I don't remember . But I remember matched battery backs would cost more. It makes sense to keep a set of Lithium's in a pair, especially if they have the same capabilities. AMPS, mAh's so on and so forth.
     
  3. Salt&PePPer

    Salt&PePPer Super Member Verified Member ECF Veteran

    Jul 7, 2012
    Bakersfield
    Having Ralph Nader and Public Citizen come and rock our boat stating "Unsafe at any Voltage"!
     
  4. J Wo

    J Wo Senior Member

    Aug 28, 2015
    I just watched a video that was made by a lovely young lady trying to make sense of and explain all the terms associated with sub-ohm vaping. She did get it mostly correct, but it was a treat listening to her explain a term and then say "at least that is how I understand it". Thank goodness she did ask alot of questions at her local vape shop before she made the video to assist other "beginners".
     
  5. J Wo

    J Wo Senior Member

    Aug 28, 2015
    Well said Sir, and thank you.
     
  6. J Wo

    J Wo Senior Member

    Aug 28, 2015
    What an interesting visual your statement makes. :lol:
     
  7. Cloudd

    Cloudd Account closed on request ECF Veteran

    To make sh*t complicated:

    Look up Thevenin's theorem and Maximum Power Transfer theorem if you want to understand the effects of mod voltage drop on the power allocated on the coils. It's worth noting when you're sub-ohming at resitances close to the voltage drop calculated resistance of your mod. Because at that point, the power would also be transferred considerably to the mod itself, overheating it.

    The total resistance (coils + other-than-coils) decides the amount of current going out of the battery. At that fixed current you could use voltage divider rule to see how much potential difference is on each component. This depends on the resistance of the components. Higher resistance parts get more power dissipation.

    Say (impossible firgures, ideal supply) your voltage drop is 1 volt when you're running a 5 ohm coil at ten volt supply, 9 volts goes to the coil, 1 volt goes to the mod. Current is 9/5 or 1.8A. 1.8A goes through the mod.

    P=IV, so 1.8*1 is the power dissipation of the mod.

    V=IR, so 1 = 1.8 R, R(mod) = 1/1.8 ohms, about 0.56 ohms.

    (not sure if this makes sense to you guys, I'm taking engineering degree so, yeah, hope it helps)

    ADD: I'm quite sure no one has posted this on this thread so I'm posting this.
     
  8. J Wo

    J Wo Senior Member

    Aug 28, 2015
    I didn't know I would ever hear about Thevenin again, but you are right.
     
    • Like Like x 1
  9. Maxwell_Edison

    Maxwell_Edison Ultra Member ECF Veteran

    Apr 5, 2009
    Ohio
    I am really upset that "normal" VV VW vaping seems to be taking a backseat to sub ohm vaping. I've even had B/M salesmen tell me VV VW vaping is "old school" and every time I look for a tank or coils at online vendors it seems all they sell now is sub ohm. I hope my style of vaping never goes out of style. Every newsletter I get from vendors, and I get a lot of newsletters, is selling sub ohm mods. I do not want one. I've tried them and their OK, but I don't want that to be my only choice.

    Anyway, a lot of sub ohm mods come with internal batteries, (like iTaste MVP 3.0 Pro Kit). It's $100. What do you do while it's charging? Spend $200 for two of them? Is VV VW vaping being faded out? This would make the FDA happy to regulate ecigs IMO. Let sub ohm be placed in the back of the store as a hobby for advanced vapers and keep the easy to use ecigs in the front, especially for beginners.
     
  10. ronnbert

    ronnbert Super Member Verified Member ECF Veteran

    Jun 7, 2014
    Sawmills, NC, USA
    I agree. I myself do sub ohm a majority of the time, but I also enjoy my nautilus(es) as well. When I want good flavor without clouding someplace out, that is my go to preference.

    I also work at a B&M, and we have the beginner cabinet first stocked with eGo kits and other similar items. The we have a cabinet further down for the advanced sub ohm tanks, mods, RDAs, etc. We have some customers who will never advance beyond their 1300 VV eGo and we are fine with that.

    One thing that gets me is that customers will tell me that other shops said they had to get this mod and sub ohm tank or even mech and RDA and they don't even know what vaping is to begin with. That is destined for bad results, especially when they don't even educate them on how to use their devices.

    Sent from my LG-AS730 using Tapatalk
     
    • Like Like x 1
  11. J Wo

    J Wo Senior Member

    Aug 28, 2015
    I will always enjoy my "beginner" devices. I still use my VV device that came out when the manufacturer didn't even offer VW yet. Don't get me wrong, I make my own coils and do see "how low I can go" :evil::shock: I do make a point to Vape Safe at all times. I still maintain supplies to use my "old school" setup, cause the oldies are still the goodies.

    I guess I got off on a tangent there. I agree as a community we should promote "welcome to all comers". LOL :vapor:
     
    • Like Like x 1
  12. xpen

    xpen Super Member ECF Veteran

    Jun 18, 2012
    Italy
    Funny to say, but in a way sub-ohm vaping is now at the same time old school AND the latest trend :D

    Old school because much more powerful regulated mods came out - and you don't need to go sub-ohm to achieve more than 20W, as with mechs.

    Latest trend because with (most) temperature controlled devices you only use sub-ohm coils. Even though most people won't even notice the sub-ohm angle there.

    It's all about choices, in the end.. The more, the better.
     
  13. Maxwell_Edison

    Maxwell_Edison Ultra Member ECF Veteran

    Apr 5, 2009
    Ohio
    Choice is nice, of course, and temp control is really awesome for seasoned vapors with knowledge of batteries etc. But that's not ''what it's all about''. We want people to stop smoking and take up vaping. They are used to pulling out a cigarette and lighting it. Simple. But if the alternative is completely incomprehensible they will not even try it. In today's world I think I'd have kept smoking if confronted with this new technology. People don't need to feel it's over their head or they need a college degree in electronics to get off cigarettes and take up vaping. I still use tanks and cartridges on a V/W mod using an 18650 battery. I began with ciggy-likes. The most important thing is keeping it simple and attracting newbies. Too many, if not most, are trying to push the super advanced mods on people who don't understand them. IMHO :)
     
  14. xpen

    xpen Super Member ECF Veteran

    Jun 18, 2012
    Italy
    Yes simplicity is definitely key to mass adoption, together with performance though.
    I was trying to say that 'traditional' sub-ohm vaping (for performance) played a role for us who started years ago, when basic kits were mostly unsatisfactory.
    Today it's just for mech aficionados, or unsuspecting TC users - who may even safely ignore they're using sub-ohm at all.
    Either way, sub-ohming today is way safer than it used to be just a couple years ago, and that's great achievement.

    PS: temperature-controlled vaping is in my opinion the future for simple, hassle-free vaping: replaceable pre-built coils, internal batteries, regulated (and protected) devices, you name it..
    It just needs to evolve a bit more, to the point anyone can use the technology without needing to know what's going on under the hood.
    Give it some more time, provided stupid anti-vaping laws don't kill it in the meantime..
     
    • Like Like x 2
  15. ogre del

    ogre del New Member

    Nov 6, 2015
    Right now I'm using the smok cube 2 with the unwell crown tank. Killer tank BTW. But I'm curious on if I should switch to the tfv4 tank? What's your thoughts
     
  16. J Wo

    J Wo Senior Member

    Aug 28, 2015
    I have both the X Cube II mod and the full TFV4 tank setup with the three types of coilheads. I personaly think it's a great tank setup. I would strongly advise anyone who wants to use the TFV4 tank set to screw the coilhead in to the base first, and not to connect it to the upper part of the tank first. this baby will leak like a bad mama jama if there is even the slightest gap between the ciolhead and the base.
    Having said that, I personally think that ejuice has better flavor in this tank. You will go through juice kinda quick but it tastes great.
     
  17. NateHevens

    NateHevens Senior Member ECF Veteran

    Damn it's been a long time since I posted. Sorry 'bout that.

    My brother just got his hands on a regulated box (IPV3 LI), with a sub-ohm tank. I can't recall what he said the ohms were; for some reason I keep thinking 0.2, but I feel like that's a lower than what he's actually using.

    Anyways... he's wondering about good settings, so I went to show him that Voltage, Watts, and Resistance chart, but it only goes as low as 1.5 ohms. Is there a similar chart for sub-ohms?
     
  18. Ezah

    Ezah Full Member

    Mar 21, 2013
    Poland
    One of the ways for creating good sub-ohms setup is calculating the warmth of the vape (so-called heat flux) - here is the calculator: Coil wrapping | Steam Engine | free vaping calculators

    If you look below:

    [​IMG]

    You can see marked area with heat flux calculation (depending od the power)- it ranges from blue (cold cloud) to red (hot cloud).
     
  19. J Wo

    J Wo Senior Member

    Aug 28, 2015
    Hey thanks for the question Nate, and the response Ezah. That is a great site. I didn't realize that that was on there, guess I should have browsed the tabs a little more ;). Thanks for the imput folks. Have a great vape.
     
  20. J Wo

    J Wo Senior Member

    Aug 28, 2015
    I have the X Cube II and TFV4 tank (in fact that's what I'm vaping on while typing this). I think the tank is wonderful, it does go through some juice but IMO that is in part to the tank's capacity being smaller than it looks.
     

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