I've been debating buying one of these, but along with all the good stuff, there are some negatives for me. (1) Even though it's a "mini", the Nautilus Mini is significantly fatter than the mPT3 and the mini AeroTank. This makes for a pretty suspicious/noticeable/ugly rig when used with an eGo style battery. When I have to fly around on business, and stealth is paramount, I use a tank setup (currently a franken-hybrid of the SS internal parts from an AeroTank mini with the top and bottom pieces from a mini ProTank 3, all on a small 450mAh VV Vision Spinner eGo type battery). When I don't have to go through some sort of security, I travel with an atty based rig (not a tank) and feed it non-liquid concentrates. I like the Pure Gold I run through the clearo, but I get sick of it if that's all I vape. (2) I don't like the idea of a threaded glass tank, which the Nautilus Mini has. This may be a totally unfounded fear, but I still have it.
On the other hand, I really like the idea of flexible ceramic wicking around the Nautilus Mini vertical coil, and I like the idea of a vertical coil with an open center, with the wicking surrounding the coil. (There's a thin layer of a cotton like material surrounding the flexible ceramic material, between it and the shell of the replaceable atty, but I don't think it will hamper absorption of even a very thick liquid, and there's a similar material in the newer versions of the dual bottom coil Kanger attys as well).
I couldn't agree with your observations more. I have the same love/hate of the GotVapes Sapphires; I finally stopped using them due to the hernia inducing draw necessary (and the shitty flavor, and I don't like having to use their "duck-bill" mouthpiece). I've been on the road for the past three weeks (hence my absence here) and I thought I'd pass on my observations with traveling with the mPT3 and Pure Gold. The observations should hold the same for any thick liquid, not just PG. I was in Dallas TX (105° day, 94° night), Las Vegas NV (110° day, 84° night), and Charlotte NC (100° day, 90° night), as well as a few other places with more human summer temps. I was on more than a half dozen pressurized jets. I followed the tips from you and
@215z (and probably others, I am so behind in catching up on my reading here I don't have time to search out the messages now), and they worked 100%. Understanding that the high temps caused the air in the top of the tank to expand and push the liquid in the bottom of the tank out the bottom air hole in the atty itself was the tip that made it all work. I had zero leaks the whole time. Oh, and I happened to have one of the "type one" Kanger atty's installed, the one with the protruding wicks. I don't think there's much difference with regard to the leaking between the different type atty's that Kanger has made. Haven't found one of the solid ceramic wick versions to try yet though...
When I was flying, I used one of the plugs that's from the GotVapes Sapphire clearo to plug the hole in the bottom of the mPT3 atty (cut the thicker cylinder plug side off, used the pointy side in the mPT3 atty hole). Then I screwed it lightly on to an eGo style VV battery. The plug kept any leaks from happening no matter what orientation the mPT3 took in my carry on luggage. After I landed and got where I was going, I removed the plug. I carried the rig upside down in my breast pocket whenever I was out and about. Again, that prevented any leaks, even in 105° temperatures.
One thing I've noticed (all along, even before the above tips) was that I would get a little clog when the PG dribbled (or was pushed by air pressure) down the air path between the coils and the bottom hole in the atty. If I didn't deal with it, it only got worse, culminating in a little leak out the bottom. It didn't impede the use of the rig, the clog "cleared" itself at the first hit, but it came back every time I used the rig cold. I figured out a trick to fix this without having to take anything apart. I just hold the rig upside down after every hit, and the heat from the coil warms up the bottom of the atty enough that the PG that's coating the inside of the air path below the coil runs down into the coil. After three or four hits, all the oil has traveled back to coil, and the atty doesn't start out clogged and any potential leaks have been avoided. Another thing that surprised me: I expected after a number of hours sitting upside down in my pocket that it would take some effort to get the rig working properly again. Not the case! Even though "all" the PG was sitting in the top of the tank, there was apparently plenty enough left in the wicks and atty to provide great hits long before the PG traveled back down the tank to the bottom. In fact, I never had to do anything special to grab a hit. Just took the rig out of my pocket upside down, turned it right side up, and took as many hits as I wanted. Didn't have to wait for the PG to travel down at all.