RBA Reviews

Hellvape Fat Rabbit Solo 2 RTA

Hellvape are flying the flag for the rebuildable vapers with their latest addition, the Hellvape Fat Rabbit Solo 2 RTA

by Antony Lord
Nov 13, 2024

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Hellvape is back again with my favourite type of rebuildable, a single coil RTA. The newly released Fat Rabbit Solo 2 doesn’t just do single coil vaping though as you can also use this in a dual coil configuration. I had to take a look back to earlier reviews before I realized that it’s actually been almost three years since we last had a single coil version of the fat rabbit with its signature dual airflow option, so I was looking forward to this one arriving.

Specifications

24.8mm diameter
40.9mm tall (excluding drip tip & 510)
810 drip tip
Dual adjustable bottom and side airflow
3ml straight glass (2ml for TPD) + 5ml bubble glass

The Fat Rabbit Solo 2 is available in seven colour options, and I was sent the Gunmetal and Rainbow versions for testing. Out of the box the RTA comes with a 3ml straight glass fitted but this will be substituted for a 2ml plastic tube for the TPD compliant versions plus a 5ml bubble tank (in both international and TPD regions). You will also get the usual array of spare O-rings and screws, a coil cutting guide, screwdriver, and a prebuilt coil and cotton.

The Fat Rabbit Solo 2 is relatively compact with a 24.8mm diameter that tapers down to just 24.2mm at the very base, and even with the 5ml bubble glass installed, it only goes out to 28.2mm. It’s fairly short as well at just 40.9mm (excluding the drip tip and 510) which means that it looks nicely proportioned on most compact single battery mods which makes this a great pocketable every day carry option.

There’s a nicely protruding positive pin at the base with plenty of insulation so I feel safe using this.

We have the signature independently adjustable bottom and (top down) side airflow common to the fat rabbit RTA lineup and both have a perfect amount of tension making them easy enough to turn but ensuring that they don’t get accidentally moved about in pockets. Both airflow rings can be removed for deep cleaning, and there are also hard stops at the fully open and fully closed positions.

There are some bold diagonal cutouts on the airflow rings to break the design up and add some visual interest, but this doesn’t quite mesh with the texture on the top cap which looks slightly out of place. Overall it’s a pretty nice looking RTA.

That texture on the top cap does serve a purpose though as it makes it easy to use the ⅓ turn top fill. This reveals two decently sized fill ports, and I have had no issues with filling this up. The top cap also uses a standard 810 design with a rather nice resin drip tip included in the package.

With the tank removed from the base, we have a postless build deck design with a slightly raised GTA style wicking system. Both the bottom and side airflows feature a honeycomb pattern with 20 x 1.1mm holes at the bottom and 32 x 1.2mm holes on the side airflow.

As I got sent two RTA’s for testing I thought I’d try this out with a single coil and a dual coil build at the same time. As usual the supplied coil is ni80 so I can’t use it and there is only one coil included in the box so if you want to go down the dual coil route you’ll need to supply your own coils from the get-go.

Installing the coils was a breeze on both builds with the postless deck design, and I went with the suggested 5mm leg length on both. Whilst there’s ample room for a fairly beefy single coil build, you’ll need to bear in mind that you only have about 9.4mm available between the internal side airflow system, Hellvape actually suggest using 2.5mm inner diameter coils here and that came out to 8.4mm wide on my build so it’s tight but perfectly do-able.

I cut the wicking in line with the outside of the base, this was barely enough to reach the wicking ports at the base, and I paid for this mistake later as I dumped almost a full tank of liquid when I left this laid on its side for a while. Opening the tank up revealed that once the cotton had saturated, it was actually covering the wicking ports quite well but some of the cotton was in contact with the outermost airflow holes, so I gave it a slight nudge away from those and decided to persevere and it hasn’t leaked once since. The wicking has also held up well in both single and dual coil configurations with plenty of bubbles being generated with each draw.

With both setups ready to go, I played around with the airflow and found that using just the bottom or jus the side airflow was a little underwhelming, you really need to use both at once to get the best out of this. Whilst there is a slight restriction even with both airflows fully open I found that having them both set to around ⅔ to ¾ open gave me the best flavour.

Both builds came out to about 0.3ohms (purely by accident), and I needed quite a bit more power to get the same vape quality from the dual coil build. Flavour was great with both, but my choice here would be the single coil option.

Conclusion

The Hellvape Fat Rabbit Solo 2 doesn’t disappoint, easily living up to previous RTAs bearing the Fat Rabbit name. For me this sings as a single coil RTA, but it’s also perfectly usable in that dual coil configuration so long as you’re careful with your coil selection. Hellvape products are usually very competitively priced, and with the lack of rebuildable options on the market these days, this should definitely be on your radar.

Many thanks to Hellvape for sending the Fat Rabbit Solo 2 RTA out for review.

Pros

Easy to build
Nice compact RTA
Dual and Single coil compatible

Cons

Make sure your cotton is clear of the airflow or you’ll leak!

Antony Lord

Reviewer at POTV

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I was a twenty a day smoker for 25 years and like most smokers I was always going to quit "next week". Having hit my mid forties and having the usual smokers cough and difficulty with anything more than moderate exercise it was obviously time to give up the cancer sticks. I bought my first e-cigarette in 2013 when they were expensive, difficult to find and quite frankly... crap. I used it for about a week then went back to the roll ups, mark up another failed quit attempt. The fact that I had just changed jobs and was under quite a lot of stress probably didn't help. Move on to 2016 and whilst I was browsing eBay I noticed that one of the suggested items that would occasionally pop up was for a cheap e-cigarette. It looked similar to the one I'd bought 3 years earlier but it was only £5 (about 8 times cheaper than before) so I decided to give it another go on a whim. Once the kit arrived I managed to gradually replace the cigarettes with my new kit over a two month period and got into watching YouTube reviews for newer kit. My cheap and cheerful kit was replaced by a more upmarket affair, and being a noob I made a mistake once it arrived... I put in the supplied direct lung coil, this was of course a complete revelation and I haven't touched a cigarette since. Oh and I no longer spend the first five minutes of every day having a coughing fit either.