Introduction – Combo Rdta by Ijoy/Limitless
I said in my iJoy Limitless XL review that the guys at Limitless & iJoy had been busy.
I underestimated, as hot on the heels of the XL comes the Combo Rdta.
iJoy/Limitless are advertising this as being a RDA, RDTA and sub-ohm (as in premade coil
head) tank with a few part swaps.
You can choose from a range of build decks and other parts to accommodate different usage, build styles and wire types.
The Combo RDTA comes in a tasteful black and gold card sleeve over an acrylic box in the same style as we saw with the RDTA+ and XL.
On the front, we have the Limitless and iJoy logos and product name, with a cut out showing the tank.
On the sides, we have a breakdown of some of the various changeable parts, indicating a few that are included.
On the rear, we have a description/sales blurb, an authenticity scratch panel and a contents list.
The additional parts (more on this later) come in individual black cardboard boxes and are bagged inside. The boxes are marked with the iJoy and Limitless logos and check boxes for what they contain:
One of the six deck types, premade coil, spare glass tank, ceramic drip tip or RDA base.
The Combo RDTA is available in black and stainless steel finishes
Inside The Box
Opening the box reveals
- Combo RDTA with IMC-2 Deck installed
- Alternative IMC-3 deck
- Prebuilt IMC Coil head,
- Cross-head and one flat blade screwdriver,
- Alternative top, cap,
- Spare glass
- Bag of parts. The bag contains two fused Clapton coils, spare silicone seals, spare screws, a Delrin drip tip, silicone single coil plug and a spare gold plated centre pin.
- Warranty card
Design and Build Quality
The Combo RDTA sits a touch larger than the standard RDTA (but much smaller than the RDTA+) at 53mm tall, 25mm in diameter but strangely has a larger capacity than either of them at 6.5ml.
No blue boxes here, this is due to the shaping of the base and centre pole.
At the top, we have a chuff cap (Delrin) with knurled edges. This unscrews to reveal the inside and the bright stainless airflow control sleeve which sits inside the black finished main body that has wide air slots in either side.
Removing the main body reveals the gold-plated build deck with sprung dual clamps. This is held in the deck ring, also gold plated, that has two silicone seals and the filling slot, easily big enough to accept your unicorn bottle even if it has a chunkier tip.
We then see the glass tank portion and base, on the bottom of which we find a serial number, logos and tank name. There is an easily fully adjustable gold plated Centre Pin that can be removed, allowing the deck and glass to be separated.
The supplied alternative deck is a velocity style.
The other boxes contain;
- The four alternative decks, all gold plated
- 4-hole IMC-6 triple post
- Flat dual clamp
- Dual post with large vertical slots
- Dual post with large horizontal slots & four screws.
- The RDA base, also gold plated and comes with a centre pin.
- This has a stated capacity of 2ml beneath the deck.
- A white ceramic chuff cap/airflow top.
How Does The Combo RDTA Perform?
The Combo RDTA performs well as an RDTA, very like the RDTA/RDTA+ with all the same caveats about careful wicking to avoid leaks and not using too long a wick.
About halfway down the tank is fine.
Filling was easy; the fill port is easily big enough for most droppers and bottle tips.
The supplied fused Claptons are happiest around the 50-60W mark, with different coils I could get higher but oddly not quite as high as the power handled by the RDTA+.
As expected with the coil plug in place and a single coil the maximum power dropped to around 30-40W.
The airflow control worked smoothly but didn’t feel as airy as the RDTA+. More on this later.
The alternative black Delrin top cap takes a standard 510 drip tip, including the one supplied. The white ceramic chuff cap felt very cool in use, insulating well.
The pre-built coil works well and easily matches its quoted power levels, with good vapour and flavour.
Changing the decks over was a relatively simple process: remove the centre pin and unscrew the deck from the deck ring and reverse.
However, the threads between the deck and deck ring feel rough and coarse, occasionally sticking.
The post screws themselves were good and the variety of clamp and hole styles accommodated everything from single wires to quad twists and exotic claptons with ease.
The RDA base is easily fitted with a deck, just screw into place and screw the centre pin into place.
Centre Pin Problem
But here we hit a pothole, the centre pin is supposed to be insulated with PEEK (solid) in the same way as the RDTA base. It’s not, instead there’s a soft silicone grommet.
Which of itself wouldn’t be the end of the world were it not for the fact that there’s no depth stop on the deck pieces.
This means it’s easy to screw the pin in too far, compressing the grommet and causing damage.
In fact, the pin will go in so far as to be totally flush with the thread. This is dangerous, especially on a hybrid mod where a hard short would result.
The RDA base is easy to wick, but impossible to fill without removing one of the wicks.
In theory one could drip from the top and let it soak down but there is so little clearance between the level of the deck and the airflow (about 1mm) that trying to do so results in juice flooding out the sides.
Even normal dripping results in bad leaks.
And that airflow clearance also affects the RDTA use, the tank is more prone to leaks than the RDTA+ which has deeper milling in the deck and a slightly higher airflow position.
Final Review Verdict
iJoy/Limitless are marketing this as a Combo device, RDTA and RDA in one.
It’s not as you have to buy a separate RDA part and that’s misleading.
If you do indulge in buying the RDA base it’s disappointing as it’s a nightmare to fill, dangerous with the potentially shorting centre pin and again the marketing is misleading as it claims this is a PEEK solid insulator.
I’m disappointed with the execution and quality control here. This could have been a great, different tank/RDA combo.
Instead it’s a misleading, potentially dangerous and damn infuriating to use one.
iJoy/Limitless, you need to sit down and have a think about where you’re going with this.
Would I replace it? Not very likely.
- Variety of centre posts/clamps
- Smart looking
- Must buy RDA deck separately
- No clearance between deck and airflow on RDA deck
- Awkward filling of RDA
- No “stop” on centre pin screw of RDA
- Centre pin insulator on RDA base is not PEEK as stated
- Tends to be leaky
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