Alright, here's my a concept drawing of my atty...
Notice the very small clearance (about 1.5mm) between the top of the coil post screw and the atty cap. The diameter of the inner chamber is 13 mm. This has about 25- 30% less chamber volume than the Cyclone. According to my personal experience and that of some other vapers, small chamber volume increases the intensity and flavor of the vape. We'll see how this vapes...
I guess I'm just a bit obsessed with chamber volume. For those who vape with single coil, I'm even thinking about making a silicone insert (chamber reducer) that can be attached to the cap in order to further decrease the chamber space (where the 2nd coil goes).
Also notice the funnel like shape of the deck, to facilitate draining.
Feedback?