Post By Screamin Eagle
Post By Screamin Eagle
My review of the full size glass Vivi Nova and full size Davide in the new BDC format.
My review of the fullsize glass Vivi Nova and full size Davide in the new BDC format.
I picked up these two BDC clearomizers (glassomizers to some) in a CoOp through the ECF forums. Which is a really nice place to get in onsome really good deals.
If you don't know what a CoOp is, look it up, or go to the CoOp section of your favorite forum and poke around a little. Just make sure you read any rules that are posted.
I received and began to unbox my order.
One thing I noticed is that the Nova was packaged in just a cellophane wrapper, and only had one of the BDC heads which was already installed.
The Davide was in it's normal cardboard box and plastic tray packaging but it seemed they used the same boxes from their Kanger style single coil Davide and just added a few stickers to identify it as the BDC style of system. But it did come with 2 heads. One installed, and one extra.
The Vivi Nova-S BDC glassomizer:
My first experience with these BDC (bottom dual coil) “glassomizers” was the Vivi Nova.
I chose this one mainly because I've never had one and wanted to seewhat they were all about.
I started out with a 2 hole 1.8ohm head and some of my home blended high VG juice on my USB VV pass-through set at 3.0V.
After the first couple of puffs it started to gurgle, then drown, then it got to the point where I was just drawing liquid, and my juice was leaking out all over the battery connection.
It has a fairly tight draw compared to the Evod and single Kanger coil Mini Davide I was use to. I was thinking that I may need to drill out the air feed holes a bit to get this thing to work correctly. But I later found out that this may not be the problem.
So I clean everything out, dial up my voltage on my pass-through, and tryit again.
At 3.6V the same thing starts to happen but after more draws. Once itstarts to gurgle I upped the voltage again. This time all the way tothe 4.8V limit on my pass-through. This stops the gurgling and turns the Nova into a cloud maker. The only problem is that it also mutes the taste of my juice.
So I drop the voltage down to 4.2V. This seems to keep it right on the edge of gurgling, yet still gives me some descent flavor, and gives a nice, rich, thick cloud of vapor that, at times, gives you a throat hit even for a mostly VG juice.
The heads on these are not interchangeable with with any other heads, as far as I can tell. Kanger single coils will thread up to the base, but their chimneys are too big around to fit in the Nova's centertube.
The Davide-S BDC glassomizer :
After my experience with the Nova I was expecting the same, or similar performance out of the Davide. This was not the case.
I can best describe the vapeing qualities of the Davide as the polar opposite of the Nova.
I've run a few different flavors through this tank and it seems to not like it when you take it above the 3.0V mark.
I am again using a 1.8ohm, 2 hole coil and my USB VV pass-through.
This thing seems to be having draw issues to the point as to where it seems it can't get enough juice into the coils to keep from getting burnt hits.
At the lowest 3.0V setting on my pass-through I can still get a slight hint of a burning taste when drawing normally. If I do a hard draw the burnt taste goes away.
I can't go any lower on voltage, and, from what I'm gathering, most APVs don't preform well below 3.7V. So this may turn out to be a problem for people who like to use APVs, and Mods. But there may be a solution.
The makers of these coils (Nhaler from what I gather) started this project with a 4 hole head. But evidently it started to receive some complaints from people who were having a similar flooding problem as I had with the Nova. So they decided to cut the the wicking holes back to 2 holes to keep the coils from flooding.
They did, however, ship a few of the Davides with the 4 hole, old style heads, installed in them. I happened to get one of these.
So I changed out the 2 hole head for a 1.8 ohm 4hole head and gave it another go.
What a difference!
I still get a crackling sound(not a rattle snake sound) coming from the coil while I'm vapeing. But the flavor has greatly improved.
I'm kind of hoping that Nhaler keeps the 4 hole design and offers it as a replacement coil option. If not, the Davide (at least mine) will windup in one of my drawers collecting dust unless I just put single Kanger coils in it.
The vapor production isn't AS much as the Nova, but it is still way above my single coil Evod and Mini Davide.
The main thing that I like about the new style Davide-S is that it was designed using the old Davide. It just has a few extra parts added to make the BDC coils fit.
So what does this mean to someone who's actually reading this?
It means that you can take these “added” parts off the Davide-S BDC,screw a standard Kanger single coil into it's base, thread it up to the bottom of the tank and vape it just like the old BCC Davide.
It means that both the BDC and the BCC coils will work in the new Davide-S!!
It's like getting two vapeing systems in one device.
My final thoughts:
My experiences with these two tanks so far has been fairly positive.
I would say these are not a good device for a vapeing beginner, at thi spoint, as there is somewhat of a learning curve to get these tanks to operate correctly.
They have to have the right heads in them, that are fired at the right voltage, or they will leave the user feeling a bit frustrated.
But after you get these things dialed in they work fantastic!
In my experience, I would not trust the Vivi Nova to anything other then a VV device that can handle voltages in the 4.0-6.0v area until they can address the flooding issues at lower voltages.
I would recommend the Davide-S for people who have those little eGo style batteries that have only one voltage setting (starter batteries as I call them).
I set the Davide on the one I have and it worked excellent on it.
So again, if they can tune these heads in correctly, this will be one outstanding glassomizer.
Both of these units produced a nice, thick, rich, vapor for me using my high VG juice.
But keep in mind, the more vapor you are producing, the more juice you will be using.
In the week since I've started testing these two tanks I've gone through about 30ml of juice. That's allot for me.
Now a word about the heads.
As I mentioned before, the Davide's BDC heads can be switched out for the Kanger style single coil heads and used in the Davide.
What I found is that when you do this, it loosens the draw quite a bit. So some of the problems I have been experiencing, especially with the flooding in the Nova, may have something to do with how small the airintake hole is at the bottom of the coils, and how tight the draw is. If your not pulling air, your pulling juice.
Others I have talked to have had different experiences with these same tanks and coils. So there may also be a problem with the consistencies inthe manufacturing of the heads.
After seeing a few people take these heads apart it is apparent that these heads are not rebuildable.
They use two different types of wire (a resistant and a non-resistant wire) fused together to make up the coils. This way your not heating up the silicone insulator the wires travel through in the bottom ofthe coil. They also use small silicone sleeves on the lead wires to the top coil so they don't ground out on the coil body or short tothe bottom coil.
There may be some out there who will get adventurous, and attempt to rebuild these coils. I hope they post video of it. But for most of us, we'll have to buy our extra coils.
One last final thought.
This BDC system is a step in the right direction. It is right now setting industry standards. I'm hoping the improvements to this system keep coming. But there is one area that a few Mod makers have addressed,and I WISH the tank makers would look into. That is variable airflow.
You can get adjustable airflow in drippers and RBAs. Now we need a bottom coil tank system with adjustable airflow. If we could get it in a system such as this, and again, do something about the wicking on the heads, I think they would be creating an almost perfect system.....for now.
Thank you to all who have read this. I hope it will help you in your research into these systems, and will shed some light on my persona lexperiences with them. Or, if nothing else, I hope it was at least entertaining reading.
Last edited by Screamin Eagle; 10-30-2013 at 11:39 PM.
The one thing I don't understand about your review is that you seem to say there's a learning curve and that you didn't check your ohms and that it's not for beginners, and all such, yet before you said all that, you seemed to have followed all the vaping rules to a tee - starting out at low ohms, all that - you said that the device didn't taste good and gave burnt hits unless it was set at 3.0V's (hardly anyone has a battery that goes down to 3.0V), and yet that it leaked unless it was set at 4.8V. And then you said that the 4-hole head is truly the only one that worked well for you, which is out of production.
I just grow tired of the mentality on this forum where if a user has an issue, they have to find reasons to blame it on themselves. Don't blame it on yourself, The Aspire is just crap. I've been vaping longer than most of the people on this forum and I do more tips and tricks to my devices than half of the top reviewers. Air flow controllers, dripping on heads, letting a tank sit overnight, cleaning, all that good stuff. The Aspire was awful to me, mainly in the taste. Mine absolutely does not leak though, strangely, and I've filled the tank up 6 different times. The two-hole heads just don't get enough juice to taste great, and I even blocked all the air off mine completely to see if it'd suck it in better. Nothing.
"The device"? I'm actually reviewing two seprate devices here. The BDC Vivi Nova, AND the BDC Davide. I did seprate their indavidual reviews by large heading text.
Originally Posted by GoodNews!
The Nova is the one where I was having the flooding problems, and the Davide is the one where I was having the feeding problems.
Both of these devices are in the Aspire LINE of products. Which include a host of other BDC tanks in both plastic and glass. So I have no idea which "Aspire" you were having problems with. It seems, from my experances, that it does depend on what tank system you actually have as to what problems you will incur.
I AM somewhat inexperanced in the "vapeing" world, and this, by no means, was a definitive "end all, do all" review. As I had stated throughout my post this is ment to give "my" oppinion and experance with these products. It's kind of like any review, it's all subjective. My intention was to give people an understanding of these products from a novices point of view.
I am a novice to the extreme (think Jack of all trades, master of none). I have a novice understanding of Mechanics, Physics, Electronics, Writing (altho my spelling has always sucked), amoung other things. I may not be an expert, but I tend to tell a subject in a way that I hope most people (expert or beginner) can understand. Because I know what it's like to not understand what some experts in some fields are refering to when they discribe something in their "expert" terminology.
I "personally" don't think the entire Aspire line is crap. I think they may have rushed it to market and could have done a bit more product testing before letting these things go out. But, with a little more engineering, I do believe they will be a much better option as far as the bottom coil tanks are concerned.
Originally Posted by Screamin Eagle
I had similar experiences with both the Anyvape BDC and the Aspire BDC. I've been using 20/80-100% liquids. I found they both don't vape well on thick liquids. I decide to do some experiments. First I added about 10% distilled water on the Aspire. It really woke up. It vapes cloud of smoke. I did the same on the Davide. It also works real well. I thought, why not just add 2 more holes on the heater coil? So I drilled the heater coil housing 2 more holes. Now they both work real well without adding any distilled water. I really believe the reviewers , sometimes, overlook the viscosity (thickness) of the liquid they are using whenever they do some reviews. I believe they should be tested on thick and thinner e-liquids to avoid coming to the wrong conclusions. On a side note, On the new Protank 3, I did a little bit of experimenting too. The heater housing is quite different. What I've done is remove the extra top wicks. It improved it just a hair. Perhaps I should add two half-rounded sluts on the top tube to prevent it from pinching the wicks thereby to allow more liquid in or let the air out.
no to drag up an old post, but that seems like a waste of two good sluts????
Originally Posted by Nicotinologist;11454118 Perhaps I should add two half-rounded[B
I love messing around with sluts. On a serious note, I just love doing some tweeking on almost all my gadgets. Most of them work and some are just wasted. Is it worth it? To me it is, lol... Here is a good one for you. On Kaifuns: I ground the internal vertical fluid inlet channels deeper than the originals and the outside channels equally. I don't know if anyone has done this before, but I wouldn't doubt it if they did. I am a chain vaper and use almost 100% vg. They do thin out each time I chain vape for 30-40 seconds. The mod did work for me, they don't thin out anymore and there is no issue on flooding either.
Originally Posted by dirty_luck
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