With this review, I hope to please the DL users again! Today’s test subject arrived from Sourcemore, and it is none other than the Hellvape Fat Rabbit Solo 2 RTA! It was a pleasure to test it, because although I am an MTL enthusiast, I look at DL tanks with a critical eye precisely because of that. If it passes the test with me, it will perform even better for you, because you can bring out the maximum from it! Just like any other Hellvape product, certain parts of the internet are raving about this one too, and it’s absolutely understandable why. After what one can read/hear about this tank, I became even more curious about it. Hellvape products are very simple, their construction is not complicated at all, and both are extremely user-friendly, just like the FR Solo 2! Although it looks quite bulky, that’s just the exterior, as it was originally designed for only a single coil, and the 25mm diameter is a bit protruding for that, but since it can accommodate even two coils, there needed to be plenty of material, of which there is no shortage, yet it cannot be called heavy. It strongly reinforces the mid-range, specifically its upper segment, and what it can offer, it does very well, as is generally characteristic of Hellvape products!
Its appearance itself is not too flashy, but due to its size, it is quite attention-grabbing. It is available in seven colors, which are full matte black (where the logo is also colored), SS, blue, gold, gunmetal, matte black, and rainbow. Mine arrived (naturally) in SS. Well, let’s take a closer look!
Hellvape Fat Rabbit Solo 2 RTA Review
Box Contents and Getting Acquainted with the Tank
The FR Solo 2 arrives with what can be called standard equipment. Inside the box, there are two small bags; one contains a bunch of spare O-rings, spare screws, and a flathead screwdriver. The other bag contains a Ni80 Clapton coil wrapped on a 3mm mandrel, and a shoelace-style cotton wick matching the coil’s diameter. Of course, we also find a 5ml bubble glass section in the box. Furthermore, the manufacturer has included a coil measuring tool, which I am personally very happy about, because the tank has a postless deck, so it matters how long we cut the coil legs. But fortunately, this is also marked, as Hellvape has marked on the coil measuring tool spanning 4-8mm that 5mm is the ideal length. Naturally, we can also find the indispensable user manual at the bottom of the box.
The first thing that meets our eyes in the box is the spare glass section with which we can increase the liquid capacity from 3ml to 5ml. The larger volume will be needed because I think it consumes quite a lot. For now, I haven’t installed the factory-supplied wire, although I must say I never install that one, but I dare say it would consume even more with it.
We have now arrived at the components of the RTA. As we can see, it is a relatively simple tank. The first component is the top cap, which features an 810 resin drip tip, but its internal diameter is narrowed to 510, because the tank’s name implies it accepts a single coil, so everything is adjusted for that, except for the airflow, but we’ll get to that later. Let’s move on. The second component is the airflow control ring, but there is nothing to see here, so let’s move on to the third component, which is the 3-in-1 Chamber itself. This turned out quite interestingly, because the smart people at Hellvape finally figured out that if the filling port slopes slightly inwards, we won’t be swimming in liquid even after the umpteenth refill, so for me, this is the second positive point after the coil measuring tool. The Chamber itself functions as usual, meaning it is the chimney, airflow, and filling port all in one. Then follows the 3ml glass section, whose sibling I presented above. Next in line is the FR Solo 2 postless deck, on which we can also see an air inlet.
The 25mm diameter deck received a single-coil design, whose maximum internal diameter can be 4mm; despite this, according to the manufacturer, 2 coils with a 2.5mm mandrel can also fit inside. Furthermore, it can breathe from the bottom as well as the top, which becomes truly advantageous when we operate 2 coils in it. We lead the cotton down from the side to the bottom of the deck, similar to the DR Solo. Actually, that’s pretty much all that needs and is worth knowing about the deck. In this case, its greatness lies in its simplicity!
What is definitely worth writing about is the interior of the Chamber. The left picture perfectly shows the contact point between the deck and the Chamber, based on which we can already draw the conclusion that it is indeed not worth cutting coil legs longer than 5mm, because they will touch the top of the Chamber, and then the bogeyman of short circuits will come and get you! The right picture reveals the exit of the top airflow, which takes the form of the well-known honeycomb style. The bottom airflow system in the deck is also honeycomb style, which softens the flavors and the vapor alike.
Let’s Build It!
I stayed true to the tank’s name, which means it received a single coil build; I wrapped 6 wraps of Ni80 Coilogy Clapton, the 26/36 gauge type, on a 3mm mandrel. For cotton, I chose Vapefly Cotton Cloud’s with a 3mm diameter, so I didn’t have to trim any off it. Long live laziness… Building on this tank is straightforward, not complicated, but it is worth paying attention to wicking, as it is not enough to cut the cotton wick at the edge of the deck; it needs to be left a bit longer so that it can reach the bottom of the deck later. Fluffing it is almost mandatory, as the cotton wick compresses itself slightly during the leading down process. Although I noticed that denser cotton fits better here, it also worked great with Cotton Cloud’s. I was a bit worried that it would be too little, but 3mm fits perfectly into the wicking channel. However, if someone wants to use it with a dual coil build, they should definitely use Cotton Cloud’s or similarly loose cotton, because the total diameter of the two coils will be 5mm, so the cotton’s diameter will be too, so attention should be paid to the details there, because it will become compressed in the wicking channels.
It seems promising so far, right? Let’s delve deeper! Next up is the:
Review
I have absolutely no complaints about the build quality! The threading on every component is perfect, jamming is not characteristic at all. The top cap received a bayonet lock, which shortens the filling time, and moreover, we don’t have to turn it a quarter turn, but a third of a turn, thanks to which it is quite stable and won’t unscrew easily. (Of course, the third turn should be understood relative to the circumference of the top cap.) The drip tip becomes a bit slippery and starts to wobble slightly if there is some liquid condensation underneath it, but it’s not bothersome, and fortunately, it doesn’t slip out of place either. However, replacing it will be difficult because its inner circumference is 510 (more precisely, about half a millimeter smaller than the actual 510 size), and not 810, which means it has been aligned with the chimney, so even if we put on a drip tip with a wider inner diameter, it won’t allow more air through. This is fortunate because the drip tip is comfortable enough that we won’t even think about replacing it. The airflow control rings run smoothly; we don’t need extra effort to dial in the airflow, but I would also call them fixed, meaning they won’t turn accidentally in a pocket, yet they are still quite easy to turn, although, as we have come to expect, the seals will hold them tighter initially, but they will break in over time; in my observation, this is characteristic of all Hellvape products, but this should not be counted as a problem, but rather as a sign of durability. The filling port, as I mentioned, slopes slightly inward, which is perhaps the biggest positive of the tank, because although the aforementioned openings are slightly lower, precisely because of this, liquid does not pool at the edge of the tank when we screw the top cap back on. The other big positive is the coil sizing tool. Not everyone has one, so it is commendable of Hellvape to include such a plastic piece in the box, it is a huge help!
As for the experience, it is very flavorful, very cloudy! But besides these, it is also very airy. Although the latter is not a significant problem, as the air can be restricted, it is understood inherently that there is a lot of air in the FR Solo 2. This is why I mentioned at the beginning that you (DL users) will surely be able to get the maximum out of it, because for me, this tank has too much airflow, but this is not a complaint, as we are talking about a DL tank. It conveys the flavors very well; perhaps the liquids from the FR Solo 2 taste slightly sweeter, but I attributed this to the thick wire and the 40 Watts I used to drive my 0.6 ohm build. Building is easy, almost too easy, so there shouldn’t be any issues with that, especially since we get a coil sizing tool as a crutch. Wicking is also not complicated, although, as I mentioned above, the unwritten rule that you should cut the end of the wick at the edge of the deck does not apply to this tank, because then it won’t be long enough to reach the bottom of the deck. However, in the FR Solo 2, it must reach the bottom of the deck, firstly because this is the only way to properly empty the tank, which is important not only when re-wicking but also when we want to switch to a new flavor after the current one. Secondly, the wick cannot be too tight in the wicking channels, otherwise the risk of a dry hit may arise, and since it is not worth overstuffing with cotton, loose wicking, or loose cotton can be pushed back by the liquid, causing it to gurgle, so it is definitely worth letting the cotton down to the bottom. I also mentioned above that a slightly denser cotton than Cotton Cloud’s fits better here, because I think the liquid can still push this back, although it didn’t happen because I let it down to the bottom of the deck, but I still think that despite all this, for example, a BP Mods might be a better choice.
To cause some dilemma, I thought I detected some experiential difference between the bottom and top airflow systems. Separately, through both airflows, the flavor is soft and the vapor is silky; there is no problem with this, and there is no difference in flavor either, because everything tastes just as fine regardless of which airflow we use, but I preferred the top airflow because the vapor was warmer through the bottom one, which personally tends to bother me, and that happened here too. If I opened both, I only got a lukewarm result, which was not so bothersome anymore, rather pleasant, but that’s why I used the top airflow more often, because there I got distinctly cold vapor, just how I like it. Speaking of airflow, everyone will obviously have to calibrate this according to the Wattage, but since a minimum of 40 Watts is required for a 0.6 Ohm build, plenty of air will be needed if the wire is thicker or if someone uses two coils. So, it’s actually not a problem that there is this much air in the FR Solo 2, because it’s better to have too much than too little.
Finally, what I must write is that it delivered an absolutely suitable DL experience for me! Although there is a lot of air in it, this is not a disadvantage, because a true DL user will be able to utilize it! Building is easy and simple, wicking requires a little attention, but that is not complicated either, and you don’t need to use different wicking tricks, just don’t let the wick pack tightly in the channels and make sure it reaches the bottom of the deck! So I must say that the Hellvape Fat Rabbit Solo 2 RTA is a very decent DL tank, with good material usage, simple operation, and last but not least, it delivers flavors well and has abundant vapor production! Not to mention, it can cover every usage mode from restricted DL to truly airy DL. If you are a DL user, you shouldn’t miss it!
You can purchase the tank at the following link:
https://www.sourcemore.com/hellvape-fat-rabbit-solo-2-rta.html
Thank you for reading! Have a nice day! 
), this turned out to be a good test article too 
and a lot of vapor. I found the best setting for me with single 
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