What causes a build to be sub ohm, I use a nemesis mod with a trustfire battery and a dark horse rda. Im not interested in sub ohming, but im more looking into how to avoid it. What causes it to be subohm? I always just thought it had to do with the size of the kanthal and the amount of wraps. But im not 100% sure
What exactly causes a build to be sub ohm?
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It's just the electrical resistance of the coil. Anything less than 1.0 ohm is sub-ohm.
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Trying to avoid... Well, you'll need to stick with single coil configurations with that Dark Horse and keep it over an ohm... or put up with sub-par performance with duals each coil 2.0 ohms or more.
Yep, like DoogieTony pointed out, it's just the net resistance of the coils, and that's it. Just because it's a buzzword (which I wish was replaced with with "high wattage vaping", but c'est la vie) doesn't mean you should avoid it or flock to it.
I'd probably (but not necessarily) put a sub-ohm build in a dripper like the dark horse, but I'd never put one in a rebuilt evod.
The coil configuration (like wire length/diameter, number of coils, etc) do determine the net resistance, so it is related to that. This calculator can help you sort all of that out.
What kind of Trustfire battery are you using? I've always been told to avoid those...
Get a better battery ( Samsung INR 18650-25R ) and don't worry about anything over .5 ohms. Better yet get a regulated box mod that will give you some form of protection if you go under 1 ohm. I seem to have trouble wrapping dual coils that are much higher than 1 ohm each. so I'm always down in the .5 - .8 area.
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Good catch, I didn't even notice. +10,000 ECF points for you!
Yeah, ditch the Trustfire, big time. Get something good from this list. I like the Samsung 25R's, like bnitch pointed out.
Thanks for the advice on ditching the trustfire, i'll get something new at the local shop tomorrow. I got the Nemesis from a friend and this is just the battery that he included in the deal. (40.00 for the Dark Horse, Nemesis, and the battery) The reason I was avoiding sub ohm is because i wasnt sure about battery safety. But ill do some research and pick up something safe.
Also, would the 18650VTC4 2100mAh 30A be considered safe? It is about 2 30 in the morning where i am so i may be misunderstanding some things but from what im reading, this or something like this is what is most preferred for mech mods and sub ohming.
If it's a legitimate VTC4, it's as safe as batteries get. But its younger brother, the VTC5, is simply non-existent right now and has been counterfeited many many times. That makes me nervous about any VTCn battery, so I just avoid them (you can only go 0.07 ohms lower with a 30A continuous battery versus 20A, and that's not until you're around 0.25 ohms that it even matters, which is way below what you want, most likely).
I'd get a quality 20A continuous battery like Samsung 25R or LG HE2. Baditude's blog post has a list of good batteries, I'd try to find something at least 20A continuous on that list, as they tend to be better batteries overall, even if you only draw 5 amps.
If you are new to mech mods and rebuildables I highly recommend you spend some time with Baditude (one of our resident battery experts) and visit his blogs. You are now 100% in control of your own safety (and others around you). Make sure you purchase an ohm reader and a voltmeter or DMM so you can measure your builds, check for shorts and measure the remaining charge on your batteries.
Baditudes Blogs. The blogs regarding mods and rebuildables are listed below:
BATTERIES
9. Battery Basics for Mods: IMR or Protected ICR?
* Another essential read to understand which batteries are safe to use in mechanical and regulated mods. Includes a frequently updated list of recommended safe-chemistry, high-drain batteries with their specifications.
17. Purple Efest Batteries not as Advertised
* A cautionary blog that reveals that the purple Efest batteries may not have the specifications advertised. Also includes a commentary on "continuous discharge ratings" vs "pulse discharge ratings" of battery specs.
OHM'S LAW
14. Ohm's Law for Dummies (Vapers)
* My attempt at explaining Ohm's Law in layman terms and how it relates to vaping.
16. Explain it to the Dumb Noob: Ohm's Law Calculations
* As simple as it is to use, some people have a tough time grasping the concept. Warning: Includes graphic photos of mod explosions.
MECHANICAL MODS & REBUILDABLES
7. Information Resources for Your First RBA
* An essential read and reference guide for someone new to rebuilding coils. Includes a multitude of useful links on battery safety, mod safety, coil meters, coil building, and the differences in the three types of RBA's.
15. Inexpensive Mechanical Mod/RDA Setup
* A response to the frequently asked question on how to get into rebuildable atomizers with a mechanical mod inexpensively. Includes a list of commonly used tools and supplies for rebuilding and where to find them.
BATTERIES - WHERE TO BUY
Only buy batteries from a reputable supplier (not ebay or Amazon) as there are many counterfeit batteries being sold. Here are several reputable battery suppliers in the US.
* RTD Vapor
* Illumination Supply
* Lighthound
* Orbtronics
Baditudes Blogs. The blogs regarding mods and rebuildables are listed below:
BATTERIES
9. Battery Basics for Mods: IMR or Protected ICR?
* Another essential read to understand which batteries are safe to use in mechanical and regulated mods. Includes a frequently updated list of recommended safe-chemistry, high-drain batteries with their specifications.
17. Purple Efest Batteries not as Advertised
* A cautionary blog that reveals that the purple Efest batteries may not have the specifications advertised. Also includes a commentary on "continuous discharge ratings" vs "pulse discharge ratings" of battery specs.
OHM'S LAW
14. Ohm's Law for Dummies (Vapers)
* My attempt at explaining Ohm's Law in layman terms and how it relates to vaping.
16. Explain it to the Dumb Noob: Ohm's Law Calculations
* As simple as it is to use, some people have a tough time grasping the concept. Warning: Includes graphic photos of mod explosions.
MECHANICAL MODS & REBUILDABLES
7. Information Resources for Your First RBA
* An essential read and reference guide for someone new to rebuilding coils. Includes a multitude of useful links on battery safety, mod safety, coil meters, coil building, and the differences in the three types of RBA's.
15. Inexpensive Mechanical Mod/RDA Setup
* A response to the frequently asked question on how to get into rebuildable atomizers with a mechanical mod inexpensively. Includes a list of commonly used tools and supplies for rebuilding and where to find them.
BATTERIES - WHERE TO BUY
Only buy batteries from a reputable supplier (not ebay or Amazon) as there are many counterfeit batteries being sold. Here are several reputable battery suppliers in the US.
* RTD Vapor
* Illumination Supply
* Lighthound
* Orbtronics
get an ohm meter if you are building your own coils..... plus they are good to have to test pre builts too...
Furthermore, your resistance checker will tell you if it's "sub-ohm".
You DO have one of those..... right?
You DO have one of those..... right?
Purchase of equipment and this thread posting should be a Self warning, you are not ready for this.
Education in safety and understanding of coil builds, and relating resistances is critical.
Replace the Li-ion Battery with a Quality IMR/INR
Learn to use a multimeter or get a good resistance meter and use it.
Dark Horse is designed for Sub Ohm builds and high power - Both of which you seem to be trying to avoid.
Perhaps a quality tank would better fill your needs.
A handy Calculator:
http://coiltoy.ermeso.com/
Education in safety and understanding of coil builds, and relating resistances is critical.
Replace the Li-ion Battery with a Quality IMR/INR
Learn to use a multimeter or get a good resistance meter and use it.
Dark Horse is designed for Sub Ohm builds and high power - Both of which you seem to be trying to avoid.
Perhaps a quality tank would better fill your needs.
A handy Calculator:
http://coiltoy.ermeso.com/
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