Wismec Theorem RTA

[Lord Vetinari]

I'm getting excellent flavour and no leaks (but mine is never on it's side for more than a few minutes at a time) or issues with droppers. I've taken it to the office (and to building sites) every day this past week and it's behaved, other than having to refill before and after a 3 minute drive! Anyway, Reo Grands are more appropriate mods for building sites and long days I suppose and thankfully that check-box has been ticked for the past 14 months.

For me, the steel tank and the notch coil have been slightly disappointing. But the tank's been good enough to want to get rid of a few RTA's which are a PITA to build/wick by comparison. Still enjoy the Avocado and that one isn't going anywhere either.

I had a toot on yours and I found the flavor accurate and unhyped. I mean it was a juice I have right in the cupboard. And that was the notch coil. Not cloudy but flavour was definitely on par with most RTA. No Gemini but I have been watching this thread closely thanks to having a little taste on your Theorem.

 

[stevie g]

I used the Theorem for a tank and a half yesterday, was not blown away. Sapor beats it hands down.

Airflow has no porting to the coil and flavor is diffused.

The looks is a looker but an average Vape.

Will be putting it on the classifieds.

 

[wazarmoto]

Been using one for 2 days now. Honestly, I'm not a fan of the juice filling method, but I can live with it. Flavor on this tank is supreme. Really great! The first juice I tried was anarchist and I was blown away. @waja09, @sterlingvape and I tried it on Sat night and we all loved it! I'll rebuild and rewick tomorrow morning before work and see how that goes. No leakage and no issues tbh.

 

[Ezekiel]

Got my Theorem last night. I will be definitely writing a big, long review on this after some time + different builds, because I think it is worth it, but for now, here's my first impressions. I was caught in the hype train, and when the first and quite polarising opinions came out, I almost didn't pull the plug. At this stage though, I'm very happy I did.

This seems to be a very specialised tank, in the sense that it will not automatically give a vape in the style you might want. However, there seems to be a lot of options available in terms of airflow, and I've noticed they give totally different vape styles, and I think it will take some playing around with it to get something you really like.

The tank definitely is very pretty, and since I really, really like smaller tanks, this is absolutely perfect for me. However, one of the touted features - that you can see your coil + wick at any given time - is not really the case. Condensation builds up very quickly inside the tank, and as a result, it just looks a bit messy. I haven't given the metal sleeve a try yet, so maybe I'll prefer that. Maybe once I've cleaned this after vaping it will be a bit better, but I actually doubt it. The rest looks great though - the (cyan?) coloured o-rings is a nice finish, especially coupled with the lack of any other colour (black/white/whatever finish), and the included drip tip looks fine on it.

In terms of usability, this tank is definitely a bummer. The AFC ring, while innovative, is just annoying to work with, and getting it just right isn't trivial. I guess if it doesn't line up perfectly with the rest of the airholes it won't really change the vape... but you know, OCD and all that. It is a "set up and go" setup, but I like tinkering with things while I'm vaping. Luckily however, once you've gotten it exactly where you want it, it doesn't move (at all). The o-rings are all super tight, especially the drip-tip and the base o-rings, which is very, very good. Popping the top off in order to fill is just a tad to stiff, though - maybe it will loosen a bit with time? Either way, a tad annoying to get off if you have to refill. In terms of refilling though, I have no problems. Stubby plastic bottles without a dripper doesn't fit all the way into the fill-hole, but on my first (and subsequent) try I had no juice 'welling up' around the fill hole. This is probably due to the fact that I had (as Matt suggested) loosened the cotton around the juice channels to create a (very small) air channel. Most glass drippers fit perfectly. I'll still see whether some of the fatter glass drippers (such as the ones used by Wiener bottles) will work. Either way, unlike some other people, I had no problems filling whatsoever (although I do think if they included two juice holes instead of one for pressure release they would've avoided many bad reviews), the only issue is getting the top cap to pop off easily. That said, the o-rings on the base is more than strong enough that I haven't (yet) accidentally removed the entire glass channel.

The actual juice capacity (~ 2ml) is for many people a big no-no. I love it though. I love using drippers, not necessarily for the vape quality, but for the fact that I can vape many different flavours throughout the day. Also the reason I'll probably never own a squonker. I've got larger tanks as well, for out and about or at a kuier, so I don't necessarily need another one. The Theorem hits the exact niche of what I needed - small capacity so that I can swap flavours throughout the day, but larger so that I don't have to drip every 3 minutes. In fact, so far it is giving me the perfect "smoke break" duration, which up to now, has been a problem for me - one drip is just not long enough, whereas if I take a tank on a quick smoke break I have trouble nipping it in the bud until the tank is empty. I had a vape with my boss (while he was smoking), and finished the 2 ml in the time he took to have three stinkies. This is perfect for me. That said, the tank is thirsty - so 2 ml's does go quite quick.

Finally, the vape quality. I haven't pulled the notch coil yet, so I might have different opinions once I have built a few different coils. However, I'm really getting great flavour. Definitely the best of any tank thus far, and, to be perfectly honest, better than some drippers (the more airy ones, like a Mutation). But the key here is the airflow options. I've only played around with the three main options - side-airflow, top airflow, and both airflows - and haven't tried having some of them half open or smaller. These change the vape totally. It might be only for the notch coil, so I'll see how they work with other builds. But, for instance, the difference between the side-airflow and the top airflow is really big: they both have the same amount of air inflow, but delivers it differently. The top airflow hits the entire coil at once, but probably has less velocity and doesn't necessarily spend much time around the coil (rather only hitting the top of the coil and then heading to the drip tip - I imagine). On the other hand, the side airflow probably hits with more velocity, probably travels over and under the coil, but it looks like it hits only a small part of the coil with full force before dispersing. The side airflow gives a hotter vape, but with crisper flavour and slightly smaller clouds. The top airflow gives a considerably cooler vape, with the same amount of flavour though. This, for me, is absolutely great. I'm not a big fan of hotter vapes, but with some atty's that is where you start getting the flavour. To get so much flavour from a cooler vape is fan-fricken-tastic. And of course, having the option to give to totally different airflows (whereas most atty's only allow you to change the amount of airflow) is the cream on the cake. The draw using both airflows is too open for me, but it might be good for the correct build - again, having these options is great.

The notch coil itself actually impressed me quite a bit. I think I was expecting to hate it though, but was pleasantly surprised. It gives the same type of vape as a clapton, but with subtle differences: a) no ramp up time. Literally. It seems even faster than simpler low-heat capacity coils - I'll eventually measure it in Escribe and estimate the actual heat capacity. b) No popping! I hate popping/crackling vapes, and is one of the reasons I don't throw claptons on everything. Don't get me wrong - not all clapton builds pop (depends on the wicking and airflow, I guess), but it definitely is more common than with other builds. c) It cools down much faster than a clapton. This is (possibly) very significant. While I'll explore it more eventually with EScribe, so far, I've seen a much smaller drop in voltage when hitting a temp limit than a TC-capable Clapton, or larger TC coils. Usually, if you've got a bigger TC build, the wattage will drop noticeably when approaching your temp limit, since the coil cools down more slowly, and therefore needs less power to sustain at a specific temperature. With the notch coil, you a) don't need a big wattage spike to heat it up, and b) you need to keep pushing through current to keep it heated while vaping. I actually usually like a small ramp up, since it tends to give me a distribution of flavour and more throat hit, but despite this I actually really enjoyed this coil.

Interestingly though, I've already noticed that TC mode with the Notch coil works much better using the top airflow rather than the side airflow. At the same temperature limit, using the side airflow results in a hotter vape, but also a larger power drop near the temp limit, which tends to thin out the vape with longer draws (at 45 W, the wattage would drop down to 30-35 W when around 255 ºC). On the other hand, with the top airflow, I got a cooler vape at the same temperature limit, but also much more sustained ( at 45 W, the wattage remained almost constant when around 255 ºC).

Lastly, in power mode, I didn't get a single dry hit, in the range of 35W to 50W, in a 70:30 juice. In addition, while the tank got hot (especially around the deck in the middle), the drip tip and its surrounds stayed cool, when using the top airflow. With the side airflow, the drip tip also became uncomfortably hot.

So yeah, I'll post a formal review once I've actually put this thing through its paces, since a first impression can change very dramatically over time when small annoying things might turn into dealbreakers. I suspect this tank will shine with certain builds but be absolutely rubbish with others. Thus far however, I really, really like this tank - it just hits a niche I don't get with any other atomizer. That said, I don't think it is for everyone, and I also wouldn't recommend it for a) newbies, b) people who want a hotter vape without fear of melting a tank, or c) people who value no-fuss and grab-and-vape over tinkering and multiple options.

 

[Stosta]

@Ezekiel , that review may have just prevented @Greyz from going homicidal. Good job!

 

[Greyz]

@Ezekiel your review has given me hope for the Theorem tank. I had all but given up.
@Stosta if this Theorem still is a flop I have a backup RDTA by Smok on its way too

 

[Greyz]

Day 2, tank 6, and I love this little tank!
Vaping some Belly Rub in it right now and the flavour is spot on! I know Belly Rub intimately, she was my 1st juice

Only quirks I have is with the side airflow. I don't use it at all as the drip tip gets quite toasty. Using just the top airflow makes for good flavour. Both air flows open, more my style, is a little lower on flavour but vapour production is better. That said this tank is by no means a cloud blowers tank. It's more styled towards flavour and ease of use. Built a 9wrap Clapton staged with SS and had it wicked and ready in less than 3min. It's really that easy!

If your considering getting this tank then there are 2 points to consider. 1 it's not a fog machine type of tank, while it does produce a satisfying amount of vapour, it's going to fall short of what other RDA's can produce. 2 the glass tanks are fragile, numerous reports of people breaking the glass when removing it. I found the glass to be very difficult to remove from the new tank. Luckily I was aware of the tight glass issues so I just ran some hot water on the outside of the glass and it popped off easily. Another thing I always do, which I do with the Theorem, is to just run the juice dropper around the inside brim at the top and bottom of the glass. This little bit of juice helps the glass slip over the o-rings easily and makes removing the glass later much easier too.

 

[Ezekiel]

Yeah, more Theorem love! Really enjoying this tank - its pretty much taken over as my ADV, with everything else taking a situational approach. Working towards a proper review. Have had no issues with the glass not coming off; in fact, for a mostly threadless atty she disassembles just fine!

The side airflow works amazingly for very specific (either very large or very small) SC builds. For everything else, the top airflow is better. Advanced builds work best with both airflows, but requires very exact coil placement, otherwise it loses flavour.

Sent from my SM-G920F using Tapatalk

 

[Greyz]

Yeah, more Theorem love! Really enjoying this tank - its pretty much taken over as my ADV, with everything else taking a situational approach. Working towards a proper review. Have had no issues with the glass not coming off; in fact, for a mostly threadless atty she disassembles just fine!

The side airflow works amazingly for very specific (either very large or very small) SC builds. For everything else, the top airflow is better. Advanced builds work best with both airflows, but requires very exact coil placement, otherwise it loses flavour.

Sent from my SM-G920F using Tapatalk

I, for one, am looking forward to reading your review on the Theorem. Your review posts are always well laid out and very informative.
I'm the type that loves the TL;DR wall of text posts

I'm only on day 2 with this tank but it's now replaced the Haze Dripper as my new fave small tank. I did switch out the stock Notch coil and put in one of my own coils but the flavour wasn't as good as with the notch coil. Now I know why, I like running it with both airflows open, so I need to play around with the coils placement a bit. Thanks for the tip bud!

Only thing is this tank looks so small when paired with the RX200. What build are you using at the moment?

 

[Lingogrey]

Yeah, more Theorem love! Really enjoying this tank - its pretty much taken over as my ADV, with everything else taking a situational approach. Working towards a proper review. Have had no issues with the glass not coming off; in fact, for a mostly threadless atty she disassembles just fine!

The side airflow works amazingly for very specific (either very large or very small) SC builds. For everything else, the top airflow is better. Advanced builds work best with both airflows, but requires very exact coil placement, otherwise it loses flavour.

Sent from my SM-G920F using Tapatalk

I've only had mine for a day, but has been my A1DV since. Really amazing flavor (and the difference between the top direct and back side airflow is really significant, but I haven't played around with anything besides the installed Notch coil) and as you indicated in your (as usual) superbly informative review (well - you said that you'll still be doing an even more comprehensive one, but already way more valuable info there than most), the small tank capacity makes it perfect to change juices regularly without dripping every few minutes. The only thing that I really hate about it is the very fragile glass. Mine chipped the first time I took it off VERY carefully after I saw @Mike 's breaking a few minutes earlier (and I saw @Mac75 noting that he broke his spare whilst replacing the original cracked glass ). I am now using the spare, but I am a bit too paranoid and OCD to not have a spare around and am terrified of taking off the glass to rewick All in all, an amazing little atty though!

 

[Greyz]

@Lingogrey @Ezekiel Since this tank is fairly new can we not pool our collective resources and share pics of builds that we find to work. This tank so easy to build on and has so much space it's begging to be experimented with.
The theorem doesn't seem very popular on here so I don't expect to see much help with regards to coil building for it outside of this thread.

 

[Lingogrey]

@Lingogrey @Ezekiel Since this tank is fairly new can we not pool our collective resources and share pics of builds that we find to work. This tank so easy to build on and has so much space it's begging to be experimented with.
The theorem doesn't seem very popular on here so I don't expect to see much help with regards to coil building for it outside of this thread.

@Greyz - Great idea in general. I'm sure there's some guys and gals that will come up with great builds, but I'd probably have to be more of a spectator (and attempt to be a copycat where I can manage). Besides my AIO I only use RTA's and RDA's, but I'm a mediocre (re)builder at best and I've never produced anything even close to coil art (or a build that is perfectly suited and customized exactly for specific tanks or drippers). That's actually one of the reasons why I really love this Theorem - the excuse of being able to use the Notch coil (and maybe it even still sounds a bit more impressive and hardcore than using stock coils, cause you have to still at least wick it and all of those complicated things )

 

[Greyz]

@Greyz - Great idea in general. I'm sure there's some guys and gals that will come up with great builds, but I'd probably have to be more of a spectator (and attempt to be a copycat where I can manage). Besides my AIO I only use RTA's and RDA's, but I'm a mediocre (re)builder at best and I've never produced anything even close to coil art (or a build that is perfectly suited and customized exactly for specific tanks or drippers). That's actually one of the reasons why I really love this Theorem - the excuse of being able to use the Notch coil (and maybe it even still sounds a bit more impressive and hardcore than using stock coils, cause you have to still at least wick it and all of those complicated things )

The idea was pretty much to copy other people coils and placement. The deepest my coiling skills go is doing staged coils using a coilmaster.
In the beginning was into trying fancy shmancy builds but now I like to keep it simple with my coils, straight SS or Kanthal.
This tank has changed my mind on the simple coils stance and I want to get busy and exotic even maybe.

 

[NaZa05]

I'm also loving this tank not one issue so far. Flavour is great. I did take the afc ring off completely on the top

Here is a picture of my build I'm running currently

 

[skola]

Looking good @NaZa05, what gauge wire and diameter coil is that?


I’ve currently got a 3mm, spaced dual vertical 24G SS316L. 9 wraps comes out to 0.20 ohms and vaping it at 50-60W in power mode. I’ve gotten the best flavour from this build so far. Last night I used only the side airflow and flavour improved a bit but so did the temp of the vape. But I do like a warmer vape for the creamy desserty juices that this cold weather calls for. I’d rate it about a 7/10 all-round vaping experience.

I’ve also tried 3mm dual vertical claptons. Flavour was good but not as good as the 24G SS. I’d rate the claptons about a 6/10 all-round vaping experience.

Keen to hear what you guys are building and enjoying.

 

[NaZa05]

Looking good @NaZa05, what gauge wire and diameter coil is that?


I’ve currently got a 3mm, spaced dual vertical 24G SS316L. 9 wraps comes out to 0.20 ohms and vaping it at 50-60W in power mode. I’ve gotten the best flavour from this build so far. Last night I used only the side airflow and flavour improved a bit but so did the temp of the vape. But I do like a warmer vape for the creamy desserty juices that this cold weather calls for. I’d rate it about a 7/10 all-round vaping experience.

I’ve also tried 3mm dual vertical claptons. Flavour was good but not as good as the 24G SS. I’d rate the claptons about a 6/10 all-round vaping experience.

Keen to hear what you guys are building and enjoying.

Hey bud, it's 3mm ID 26g twisted Kanthal

 

[skola]

Hey bud, it's 3mm ID 26g twisted Kanthal

Thanks bru. Will keep this one in mind.

 

[NaZa05]

Thanks bru. Will keep this one in mind.

Let me know what you think if you ever do build it

 

[skola]

Let me know what you think if you ever do build it

Will do.. I'll try it out tonight and let you know.

 

[Greyz]

@NaZa05 love the Dual twisted build your running there. Would you put 2 vertical coils flavour above the flavour produced from a huge single coil?
PS: Thanks for the pics!
@skola where the pics plz share with us


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[NaZa05]

@NaZa05 love the Dual twisted build your running there. Would you put 2 vertical coils flavour above the flavour produced from a huge single coil?
PS: Thanks for the pics!
@skola where the pics plz share with us


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The single build I had was a Clapton 28/32 and actually that was great too. Let me build a big single twisted coil tonight and then compare the 2 and come back to you around which is better for me. I will use the same liquids to test as well

 

[skola]

@NaZa05 love the Dual twisted build your running there. Would you put 2 vertical coils flavour above the flavour produced from a huge single coil?
PS: Thanks for the pics!
@skola where the pics plz share with us


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Dual 24G SS316L, 9 wraps, 3mm Ø

 

[Greyz]

The single build I had was a Clapton 28/32 and actually that was great too. Let me build a big single twisted coil tonight and then compare the 2 and come back to you around which is better for me. I will use the same liquids to test as well

Looking forward to reading your feedback

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[Greyz]

View attachment 54800
Dual 24G SS316L, 9 wraps, 3mm Ø

Soooooo pretty


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[Casper]

Soooooo pretty


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Absolutely, very, very pretty in deed!