Two posts vs three posts
- Thread starter Saltraker
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2 posts are designed for a single coil. 3 posts are designed for dual coil. The positive post will receive a leg from both coils, whereas the negative leg from each coil will have its own post. You can run a 3 post RDA with 1 coil, but airflow is generally designed for 2 coils, and thus you may get a more airy draw than you'd otherwise like if you ran just a single coil (one air hole would be providing very little except extra air on your inhale rather than flowing on to a coil).
However you can run dual coils on a two post, but it's more fiddling getting them thru the post and usually you would have to drill your 2nd hole yourself on the other side.
*cAtCh YoU oN tHe Flip SiDe*
*cAtCh YoU oN tHe Flip SiDe*
Also some 3 post designs have adjustable airflow, you can cut off one of the air holes when using a single coil. If your not sure about dual core but think you might want to check it out those would be the ones to look for.
It's certainly possible to run dual coils with a 2 post setup, though, as you said, could be a PITA to set on the posts.
Were I looking for a new device and planned to run dual coils, I wouldn't even think about a dual post, however.
If the OP is looking for a first dripper (which seems obvious from his original question), I'd buy an Igo-L from one of the vendors on eBay (or elsewhere online) who will drill out the air flow hole on the cap and use it with a single coil until I was ready to move on, then I'd look at the available options again and go from there. MAKE SURE YOU GET THE AIR HOLE DRILLED OUT unless you like the feeling of sucking a golf ball through a hose. Drilling it to 1/16" is fine. Many eBay vendors will do this for a small fee. You can alternatively do it yourself once you received a stock top cap, but I wouldn't try it without a drill press (yes I'm aware that many people do just fine with a hand held drill, I'm simply stating my preferences).
Igo-L is a great starter. It was my first and i still have it all banged up and stuff lol got a huge dent in one side but vapes like day 1
*cAtCh YoU oN tHe Flip SiDe*
*cAtCh YoU oN tHe Flip SiDe*
No, I am not looking for my first dripper. I was asking specifically regarding the advantages of two post vs. three post designs. The three post seems more popular. Yet, the Fogger V4 for example, which is getting respectible reviews right now, uses a two post system. I've watched both Todd and Matt on YT build this device and I wouldn't call their experiences PITA. I can see where three posts makes installing dual coils "easier", but it looks as if building a dual coil on a two post system ain't that difficult. So, I will ask one more time...what are the advantages of one system over the other?
As has been mentioned above, three posts make it easier to build dual coils and also gives you the option of quad coils if you're interested in that sort of thing. Generally, three post designs also come stock with at least 2 air holes so that you can get air flow to your dual coils.
The advantage of a two post design is that the chamber can be quite a bit smaller which too a lot of people, including me, means better flavor.
The advantage of a two post design is that the chamber can be quite a bit smaller which too a lot of people, including me, means better flavor.
I am liking 2 post atomizers better then 3 posts. Mainly because that gives me more room for mounting my builds and have more coil to wick coverage. A lot depends on the atomizer and the build platform. Do wish more rba's came with slotted & holed post's options. Makes for easier mounting sometimes.
Three posts are fore dual setups. Two posts are for single, but with a headache and strained eyes you can get a dual on there. Four posts are nice which are on the Helios and the IGO-M they have their own slot for dual coils, you can even make them quad coil setups with kanthal sharing a hole . Good luck making your choice.
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