I've had my Joyetech Riftcore Duo from
Heaven Gifts for almost a week and I have been pleasantly surprised. I took it all apart to check it out and it is machined very well, threads are smooth, everything fits snug and comes with all the expected extras, even a set of tweezers. It is easy to fill, just slide the top cap, unlike a couple of reviews I've seen, I did not have to remove or lift the drip tip to slide the top cap. The resistance was just right, easy to slide but snug enough that it is not going to open by accident. I would have liked the fill port to be a tad bigger, I didn't have issues filling with any unicorn or plastic bottles, but some glass droppers may be an issue.
Wicking is about as simple as it gets and doesn't need much cotton at all. You could probably wick it at least a dozen times with a single Muji cotton type pad. The RFC heating element heats up quickly and evenly. The flavor was quite good, I didn't notice any off or strange flavor coming from the RFC. With both elements, mine read 0.28 ohms and they suggest 40-50 watts. I tried it at many different wattages and liked it best at 45w. I tried it 60w and it vaped alright, but really needs more airflow. It did work very well as a MTL, I closed off the airflow and vaped it at 28-30w and it worked very well. I got a very nice MTL vape, I was kinda surprised, didn't think it would have been enough to heat up the element, but worked nicely. The inner chamber is quite shallow and rounded which is probably why I got a good MTL vape. I tried different juices and the RFC didn't get too badly gunked up and it was easy to clean, without cotton, just heat it for a few seconds at 30w a couple times.
The only con I have is, I would have liked to have a little more airflow as it does get a little warm when chain vaping. Overall, I was quite pleased and didn't know what to expect since this was the first coilless tank I had tried. I think a squonk RDA would work nice with this coilless tech. I went to Joyetech's site to see what the RFC is made of and find more info. The RFC is made in the USA, but couldn't find what the materials were. They did have a MSDS report, but would like to have more details.
http://www.joyetech.com/product/riftcore-duo/
Overall, it's a nice tank and works well. This isn't a tank for people that like to build and want the flexibility and customization that a traditional rebuildable offers. It is a good choice for someone that wants to transition from a sub-ohm tank and doesn't know how or intimidated to build or tired of constantly buying heads, or someone that has a hard time building, physical reasons and such, or someone that wants a simple low maintenance tank. Simple to clean, easy and cheap to maintain.
I took out one of the RFCs, just to check it out.
Here's the airflow slot with the RFC removed
Doesn't get any simpler to wick than this.
Wicks ready to go, very small inner chamber
Didn't need to remove the drip tip to refill
And here it is out in the wild. Just had to include that sign I saw while walking, just so many questions raised by that sign.
