From Old Thread:
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WickedWicks said:Has anyone compared the Subtank 1.5Ohm vertical heads to the GS Pure Cotton? I'd be interested in MTL experience not 20+W DL.
WickedWicks,
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@WickedWicks : Well the Subtank Mini (same as subtank coils I understand) Vertical OCC coils are 1.2 ohms, I think that's replaced the 1.5's, kangertech is terrible about communicating when they drop a line, change versions, modify their tanks, etc, even with their resellers. I'm on my third day with my new Subtank Mini, and can report this personal opinion regarding the GS Air Vertical 1.2 ohm OCC coils, the GS Air 1.5 ohm dual coils, and the Nautilus Mini 1.8 ohm Vertical cotton coils. Vaping 70pg/30 pg NETs, I have to give a big flavor nod to the stock 1.2 ohm VOCC Subtank mini coils. The vape on the subtank mini coil is so smooth, and flavor is lovely, third day on the coil too, with NETs. No crackling and popping like I seem to get on the other tanks unless I go from cold to warm, then I get some gurgling. In warm weather, all the tanks and coils I've mentioned gurgle when I go outside on a warm day with my thin juice (like today, just moderately warm), the temperature change just does that, and the best explanation I've heard is the air warms up in the tank and expands, pushing juice through the wick. Sounds plausible.
Now the minus on my Subtank Mini, at work today, it started leaking out the air holes when i was outside, never did that until today. I cleaned it up, and went on. When I got home, it was even worse, I took it apart, looking for the source of the leak, inspecting orings, seals, etc. I noticed that where the coil pin end seals, their really is no seat in the base, just threaded, so the silicon seal has to seat into the beginning of the threads, not a great design. I thought that might be the cause, but after cleaning and putting the coil in tight, it leaked worse than before. Took it back apart, this time looking even closer, and the leak is not at the coil seal to the base, its definitely coming through the coil itself, and so I took a look at how it all sealed, and saw that the top of the coil head has a seal that has to seal on the inner tube, and it didn't seem to go very far. This time when i put it all together, I tightend the base very tight to compress the really soft red o-ring at the base, which slid the top coil seal further up on the inner tube. No leaks after that, but its cooler outside now, and my juice is thicker, so we will see what happens when its warm tomorrow.
Sorry to post so much subtank mini stuff, but i had to tell the full story to answer the question, being me and all, lol.

Edit: I should add, when I vape a high VG juice, which I am now with my Clockwerks Custard on my GS-Tank, that tank and Nautilus Mini tanks and coils behave well. except that stuff clogs up coils pretty fast, haha. By clog, I mean sucks in the cotton its so thick lol