Finally arrived.
FIY up front:
Deck is small, 13mm dia. inside the juice well.
Post holes are wide, but a little less than 1.5mm high.
Chimney ID is 4mm, narrower than I expected.
Four air holes, 90 deg. spacing, not possible to adjust AFC to two.
Same air hole-to-coil alignment limitation as Aromamizer RDTA.
Juice capacity is 4ml (measured) filled to brim of the chamber.
Juice holes accept 16ga needle for filling, no bigger.
First impressions:
Arrived clean, only needing a rinse. Excellent fit and finish, clean threads. Especially nice surface grind everywhere, including inside the chamber and deck. Only exception to the machining finish is the rough edges on the chamber side of the air holes. The airflow was noisy at first. Steel wool helped, but a little more work on those edges will be needed to quiet it down to where I want it.
My first build is a
single coil between the posts: spaced twisted triple 28g, 3mm ID, .45 ohm. (3.5mm seemed a bit too tight between the posts.) Have not tried a dual coil yet. Wicked it with j-cotton, tails spread out like a bow tie, just long enough for the fiber ends to touch the deck over each juice hole.
80% VG juice is feeding/wicking just fine. No dry hits even when trying. The vape is nice and warm with very good flavor concentration due to the small domed chamber and short chimney. I'm currently using the same single coil build in a Serpent and Velocity Mini as well. Flavor is excellent in all three; vapor quality a bit different. The Serpent has the edge in both areas because it's designed as a single with air directly below the coil. The Train is more like the Velocity Mini with air coming from the perimeter, except the vapor is warmer and more concentrated in the Train because of the small chamber. Apples and oranges, I know. With a dual coil build, the vape will be very similar to the small Aromamizer of course, but oddly also to the Goblin Mini because of the small chamber and short chimney. I think the GM is a great vape, but I'm definitely liking the Train better for it's features, access to the deck with a full tank, easier no-fuss wicking, and no leaking onto your mod's 510.
Halfway through my first tank and I'm a happy customer. I think I'll keep it as a single, which is what I intended all along. And use it for NETs, which require dry burning and rewicking frequently, which will be easier on the Train than the Serpent, for example. The Train is also nice and small in stature, won't leak, and with a single build on a small mod I'm thinking will be a particularly good RTA for the shirt pocket.
