What's with the UPPER ohm limit on most all VV/VW devices?

[CardinalWinds]

So long story short, I recently (November) got back into vaping after four years off the wagon. My only real device is a Prodigy 3.1 6v mech. I did get a few 10 dollar tanks and some fresh batteries and I'm humming right along. But I'm ready for a modern piece of equipment. The problem is that I have a ton of old school attys that I'd like to continue using for dripping and the coils for these new tanks that are all between 3 and 4 ohms (needed on an old school 6v mod) and I don't want to just shelve all this stuff because I'm vaping with it to complete satisfaction.

So I see the 3 ohm upper limit on most of the new generation apv's. I really liked the looks of the SX Mini, for example. I see the new iStick has a 5 ohm upper limit, so that's probably what I'll buy, but is it really the case that those devices listed as 3 ohm max resistance will not fire a 3.1 ohm coil?

 

[Crunktanium]

Back in the day battery technology simply was not where it is today thanks to mobile devices. You are better off tossing the antiquated tech and buying new or rebuilding what you can at lesser ohm.

Why would you want old tech when for $30 you can get a modern dripper, cotton and about 50ft of wire?

 

[shreduhsoreus]

I think it has to do with the voltage limits on these devices. Higher resistance means more voltage is necessary to hit the watt limit(or any wattage setting compared to a lower resistance atomizer).

 

[roxynoodle]

Get yourself a nice, new dripper to go with it. I'm guessing you're not a cloud chaser, so I'll recommend a Magma clone.

 

[dr g]

dna40s have essentially unlimited upper ohm limits

 

[r77r7r]

My 20watt Istick will run my 3 ohm carto to 11.4watts. The carto itself starts burning at 9 watts.

I'd imagine the 30 and 50 stick would do better. Your attys probably have the same limitations.

 

[Mike 586]

Get yourself a nice, new dripper to go with it. I'm guessing you're not a cloud chaser, so I'll recommend a Magma clone.

Magma would be my 2nd favorite, but honestly I like the Odin a lot more for a few reasons. Mainly because its way less hassle to drip. Both produce roughly the same vape though, which is great tasting with the right build.

dna40s have essentially unlimited upper ohm limits

Evolv's spec sheet says 2.

 

[KGB7]

1.0ohm is the average ohmage now days. You get tons of vapor, flavor and nic. With so many new cheap tanks on the market today, you can sub-ohm and get a lot from almost any tank.

Vaping at 3 or even at 4ohm no longer makes sense.

 

[duc916]

dna40s have essentially unlimited upper ohm limits

The upper limit is 2 ohms.

 

[CardinalWinds]

Appreciate the responses! Yes, just storing all this old tech for backup and starting from scratch is a good recommendation and one I'm considering. Here's my issue, though: when I looked to get back into vaping this past November I was so floored by the changes in equipment since 2011 I was initially overwhelmed. I'm one of those guys who likes to do a lot of research before I buy and honestly I didn't have the time this go around because I wanted to stop smoking immediately.

I did just enough research to understand I wanted a tank. A tank! There weren't any tanks when I started vaping ( cartomizers were state of the art)! This will be great! So I bought a couple of these 3.5mL NBC Tanks with the 3 ohm coils (remembering that my only device is a 6v mech mod). I loved them! What a change from cartomizers! Now, I know these are pretty cheap tanks, but they work wonderfully, bottom replaceable coils, greaat vapor, great flavor, no leaks, no dry hits, no flooding.

I'm also well aware that these are junk compared to the Kanger and Aspire tanks with their pyrex glass, adjustable air flow etc. Will I eventually get totally up to date? Absolutely! But I have 7 of these tanks now, with different juices in each along with 10 extra 3 ohm coils and as I said, right now I'm still loving them. They've gotten me off of cigs completely, something I never managed back in the day.

In the meantime, AFTER I get a new apv but BEFORE I start investing in the really good tanks, drippers, building my own coils, etc., I'd like a device that will at least fire the tanks I have right now.

So my question still stands: Is the 3 ohm upper limit, on devices so listed, a hard limit? I understand that coil resistances that high are going the way of the dinosaur, but, for the time being, if I slap one of these tanks on a 3 ohm max device and that coil happens to come in at 3.1 or 3.2 ohms, will these devices refuse to fire as they would for a coil that was below its lower limit?

And you're correct, roxynoodle, I'm not a cloud chaser. In fact, I don't even do direct lung hits, so I would be looking for toppers designed for mouth to lung hits. It's the way I smoked and while I've tried direct to lung, I don't care for it.

 

[roxynoodle]

I've been vaping for a year, and still prefer mouth to lung, a problem with the great new clearos like the Subtank.

However, I'm seeing Kanger Aerotanks on clearance, and I bet you would like one. SS, glass and adjustable airflow.

I think, yes, if your coil comes in at 3.1 ohms, the mod won't fire it. A mech would, but it would be a horrible, wimpy vape.

If you're enjoying what you have, why not keep using it for awhile? I still use a 1950 Far all tractor . Why not? Its fun, and does the job.

 

[KenD]

The upper limit is 2 ohms. [emoji23]

Yes, but it has soft limiting (is that what it's called?) so it can do higher and lower resistances than what the spec sheet says, but it'll limit the watts in order to not over stress the battery.

I don't have a dna40 device so I'm not sure how that'll work in actual use. And most dna40 devices are pricey, except the new h-cigar one.

 

[r77r7r]

I was thinking that it would fire but wouldn't be able to reach the max limit- or anything close????

A 3 0hm fires fine on my 20w Istick, just won't reach the advertised 20 watt max.


- OK, that's the soft limit then.

 

[KGB7]

I dont know what to tell you if you want to stick with 3ohms, sooo much has changed since 2011.

If you have a mech battery mod, then you can always get a latest rda or rta under $40 and just build a 3ohm coil.

You said that you are not a cloud chaser, but, cloud chasing or more vapor has benefits if you want to inhale more nicotine per square inch/foot. More vapor = more Nicotine. Thus you can vape juice with lower nicotine. Last week i bought a bottle of juice that is 11mg Nic and i cant taste the juice at all, but same juice at 3mg Nic has lots of flavor.

With out knowing what you end game is, i honestly dont know in which direction to guide you.

Im a direct lung hitter, thus low Nic juice with High volume of vapor is my personal choice; i get the Nic hit that i crave, plus flavor from the juice all at the same time. I mix 0mg Nic and 6mg Nic juice to give me a roughly 2-3mg Nic juice, and to me its a perfect mix.
I know what you thinking, why not vape 3mg nic juice? I simply dont enjoy it, its like vaping Pop Rocks candy with Nicotine, thus i have to delude it. And 6mg Nic juice gives me a headache after 4ml of juice.

Im going off topic.

So.. what is your long term goal?

 

[BluzKing]

By my calculations, and I'm no means an expert, if you run a 3.0 ohm on a 30 watt device, it will require almost 11 volts to fire. Most of the Variable devices cannot fire over 9-10 volts, max, and are much more comfortable (and efficient) in the 4.5 - 6.5 voltage range. The Sigeiei 150 Watt Box Mod is limited at 8.5 volts. And even if they did fire at 11 volts, the battery draw would be unacceptable and most likely the vape would be hot, burnt, or unpleasant. If you went up to 60 watts on a 3.0 ohm build, the voltage push is even higher, running at over 13 volts!

That same device running at 30 watts on a 1.2 ohm build would fire at about 6 volts, resulting in longer battery life and a cooler, more pleasant vaping experience for most consumers. If you went to 60 watts on this build, you would be pushing over 8 volts. While that's doable, it would still be a pretty hot vape and result in decreased battery life.

With a 3.0 ohm build at 5 volts you would need no more than 8-9 watts to be comfortable, and that's at the lower end of most new Variable devices specs. And while I have no experience, it would probably take a while for the coil to heat up and provide vapor, and even then it would probably be pretty weak.

 

[LotsaBS]

By my calculations, and I'm no means an expert, if you run a 3.0 ohm on a 30 watt device, it will require almost 11 volts to fire. Most of the Variable devices cannot fire over 9-10 volts, max, and are much more comfortable (and efficient) in the 4.5 - 6.5 voltage range.

Good answer. Using Ohm's law 3 ohms at 9 volts equals 27 watts. Again ohms law calculates 2 ohms at 9 volts to be 40.5 watts while 1 ohm at 9 volts will be 81 watts. As BluzKing sez, most newer devices have an upper voltage limit now approx 9-10 volts now.

Now if you like to vape at lower wattages, say 10-20 watts, you could exceed 3 ohms somewhat (example: 3.5 ohms at 7.25 volts is 15 watts).

 

[dr g]

Evolv's spec sheet says 2.

The upper limit is 2 ohms.

It says that but Evolv spec sheets haven't always told the whole story.

The board has no effective upper resistance cutoff as far as I've seen. I've used it with 5+ ohm coils before, and it will fire them. Max voltage is about 8.5 though.

 

[crxess]

It says that but Evolv spec sheets haven't always told the whole story.

The board has no effective upper resistance cutoff as far as I've seen. I've used it with 5+ ohm coils before, and it will fire them. Max voltage is about 8.5 though.

Usage outside manufacturers specifications may exclude manufacturer from liability
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Op your Tanks have several coil options - check with your vendor or other services.
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