Youde (UD) Simba Intro
The Simba Tank is Youde Technology’s most recent offering in the crowded sub-ohm clearomizer/RTA tank market. I received what looked like a retail package that contained a black Simba Tank engraved with “Sample.” I assume that this means a pre-production model, so your tank may vary from mine.
The 4.5 mL capacity Simba tank has a number of attractive features: Top fill (nearly universal for new tanks), dual bottom and top air flow adjustment, easily adjustable e-liquid flow control to the head, condensation and anti-spitback protection, and — most significant of all — a new head design embedding a stainless steel vertical coil inside an all-ceramic housing that wicks e-liquid directly to the coil without cotton/rayon wicking.
Youde (UD) Simba Specs and Features
- 49mm * 22mm
- 510 thread
- 4.5 mL capacity
- Top filling
- E-liquid flow control
- Bottom Airflow control
- Stainless steel drip tip with adjustable air flow
- Without cotton ceramic design
- Condensation collection
- Filtering impurities
- 304 stainless steel anti-spit mesh
- 3 heads:
- 0.5Ω Kanthal A1 dual horizontal coil in a ceramic cup with cotton wicks
- 0.5Ω 316L SS vertical coil in a ceramic cup with no cotton wicking
- RBA head with Velocity posts for single or dual coils
- includes an Replacement Glass Tank and spare o-rings
Currently, the UD Simba Ceramic Tank is offered only as a pre-order. Price on the sites I found accepting pre-orders (in China) is $23-30. A number of American vendors list the Tank, but are not taking pre-orders yet.
Air Flow Design
The Simba tank incorporates dual air adjustments — bottom and top. The air intake from the bottom is a typical design with two opposite slots and a control ring that rotates to open or close off the slots. The top air control regulates the draw from the chimney inside the drip trip, which can be turned to open or close off the air flow. That’s an odd design, since half the air from the chimney is blocked even if the drip tip is adjusted to fully open. When completely closed, the draw is so tight than no vapor comes through at all. Unless the tank is directly illuminated from the top down by a light source, adjusting the air flow with the drip tip is difficult to gauge. With a black tank, it’s dark inside the drip tip!
This is the first all-ceramic head I’ve vaped. (The ceramic head into which the wickless coil is embedded fits into a thin metal shell that provides the threading, but I understand why the head is called “all-ceramic.”) I’ve read reports about this style head, with judgments that vary from great to meh. I have to weigh in on side of those who were not wowed by this new technology. For me, performance was OK, but nothing special. I’ll take Crown or Starre vertical coils wrapped in cotton over this wickless ceramic head any day of the week.
The other factory coil has dual horizontal Kanthal coils atop a ceramic base inside a metal housing. These are almost identical to the Youde coils that came with my Zephyrus v1, with performance that’s similar in both cases: pretty good, but not stunning.
The included RBA deck is small, like all such decks in sub-ohm clearo tanks, but was my favorite of the three choices. To prevent dry hits, the wicks have to be short and thinned at the e-liquid channels, as is true of many RDAs and RTAs. The wire holes on the two Velocity-style posts aren’t particularly large, but they’re adequate for 26-gauge, 2.5mm diameter dual coils.
The performance of the Simba tank failed to live up to my expectations. Flavor was very muted with both factory heads, and vapor production, while adequate, was nothing to write home about. Basically, I didn’t like either of the factory heads.
The included RBA deck was a different story, at least somewhat. I built the deck with a single stainless steel coil at a resistance of 0.36 ohms, and the vapor production was quite good, even at a modest 30 watts. Flavor was improved, but still seemed muted to me. Given my choice, however, I’d rather vape my single-coil Taifun GT-T v2 FrankenTanks, which are virtual antiques compared to the Simba.
After one full day of constant use, I’ve seen a little leaking of e-liquid from the bottom air slots, but not enough to aggravate me. A quick wipe with a kleenex on the top of my Wismec RX200 and around the base of the Simba took care of it. Apparently Youde recommends closing off both the bottom air intake slots and the inner e-liquid flow control when not using the tank. Personally, I regard that as a pain.
I feel somewhat embarrassed to say this, but for me, the cons of the Simba tank so far outweigh the pros that I don’t even want to list them. So I won’t.
I checked out numerous YouTube video reviews and first looks. Apparently, Youde has sent out a lot of sample Simba tanks for review. Uniformly, every reviewer praised the tank and its performance, emphasizing the high quality of both flavor and vapor.
I don’t get it. Maybe I’m the only reviewer who didn’t like the Simba tank, but I simply wasn’t impressed. Overall performance was OK at best, but leaning toward mediocre. The exception was the RBA deck, which provided a better vaping experience, although still not comparable to the best sub-ohm clearo tanks and RTAs. While the machining is adequate, the tank seemed to me both fussy and fiddly. If this had been my first blind date with the Simba tank, we wouldn’t have a second date.
Were it up to me (which, thankfully, it’s not), I’d go back to the drawing board and re-design the Simba tank from the ground up.