Ok, I tried. Not once, twice or three times but 1/2 a dozen times to get the Cubis 'RBA' to do something other than gurgle, flood or draw worse than a Nautilus when the Cubis is wide open. (sigh) I even tried the included clapton coil for grins and was unable to get a vape out of it.
Has anyone gotten a build to work?
I'm going to pack up the 'RBA's and clean the tank then toss it in a drawer for when I want some frustration.
On my 2nd build. First was floody and gurgles. This time I used more cotton and let a bit of the ends stick out of the side holes and into the tank. It's much better, still get some gurgles, but as some others have speculated, the air and chimney design seems to lead to a lot of juice condensation in that area right above the coils. So when I feel it's starting to make me drink rather then Vape, I take a pipe cleaner and carefully clean out the chimney. Solves the issue for a decent amount of time. Better then taking the messy tank apart, but when changing a coil or an empty tank, that's the best way to start fresh, but that's a good time to look down the chimney pipe to see how much it's blocked by the liquid and condensation. If you don't have any pipe cleaners, that's a good time to blow it out.
The design of the tank is intriguing, but not perfected yet. I've have only tried the .5 ohm coil as well as the RBA, but looking at on of the higher ohm coils, the air is routed down the outer part of the Atty shell and then up and under the coil. That seems likely the real idea of this system, but I guess they could not do it on the larger ohm coils and RBA. Whether or not that design really works better doesn't matter to me as I'm not using the lower ohm coils.
My RBA build, 24 gauge titanium, 6 wraps, 3mm ID, .20 ohms. KGD cotton, on an EVIC MINI. 470 degrees @35watts, hits temp almost instantly, which I love.