I do not know if this has been discussed before but here is what I have learned through experience and being an engineering student. Sorry but this is a long post.
If you get harsh hits from an rda please do read this before:
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Any way I stuck with it (because my Tatroe tanks still have not arrived) always tweaking thinks to try making it better with little to no improvement.
So today, just for the heck of it, I switched out my Cherry Vape Ming Drip Tip that I was using for a Doughnut Trippy Tip that I had and BOOM!!!
ALL THE HARSHNESS WAS GONE!!! It was a night and day difference. I was getting an unusual flavor from my Honey Pearry before this point (not bad but it seemed like there was A LOT more strawberry than I remember from the first time I tried vaping), but the delightful flavor I remember is back now.
I can now: vape my 24mg nicotine juice, dual micro coil, cotton wick, at 12 watts, in my Atomic RDA, and blow awesome clouds with absolutely no coughing.
At the moment I thought it was the difference in the material or some voodoo magic, but now I realize what it is.
Even though I had my air holes set full open (dual 3mm) and positioned right at the coils, the Ming Drip Tip's smallest inner diameter was too small to give me enough airflow.
This might be a little confusing to some, but if you look at it like a straw because air is a fluid just like water it makes more sense. If you have a straw that has a big opening at the bottom but a cocktail straw sized opening at the top your not going to drink any faster than if you had a regular little cocktail straw. If you have a straw that has a big opening at both ends but has a middle section like a cocktail straw, you are still not going to be able to drink any faster. Now if you have a big straw all the way through (like a smoothie straw), you can drink incredibly fast.
MY Math and Theories
My Trippy Tip is not hugely bigger in the smallest internal diameter than the Cherry Vape Ming but it is noticeable. I do have a plain flat metal drip tip that is barely bigger than the Trippy Tip (tenths of a mm) but I notice the flavor starts to mute a little. This tells me I am not reaching the full capabilities of the dual 3mm air holes with the Trippy Tip. The area of 1 - 3mm air hole is 7.069 square mm. So the area of 2 - 3mm air holes is 14.138 square mm. A single hole diameter (like drip tips have) that equals this total area is 4.500mm. This means to get the most out of my dual 3mm air holes I have to have a drip tip that has a smallest internal diameter measuring 4.5mm or greater.
So the goal is to find a drip tip where the smallest internal diameter is as big as you can-get-it/need-it.
Other possible solutions that drip tips may be able to solve (theories I have in mind but haven't been able to test yet):

If you get harsh hits from an rda please do read this before:
-You lose hope in RDA's
-You go out and buy juice with lower nicotine levels or higher VG juice
-You drill absolutely huge air holes in your RDA
-You consider that you might have PG, VG, or cotton sensitivity
So I just started using my Atomic RDA and was quite disappointed that at only 12 watts I was coughing out my lungs and getting that burning feeling in my mouth and throat. It did not matter if I used silica wick, how tight or loose I had the cotton, which dual air hole setting I used, or which one of my 5 favorite juices that I used. The result was the same every time, -You go out and buy juice with lower nicotine levels or higher VG juice
-You drill absolutely huge air holes in your RDA
-You consider that you might have PG, VG, or cotton sensitivity

Any way I stuck with it (because my Tatroe tanks still have not arrived) always tweaking thinks to try making it better with little to no improvement.
So today, just for the heck of it, I switched out my Cherry Vape Ming Drip Tip that I was using for a Doughnut Trippy Tip that I had and BOOM!!!
ALL THE HARSHNESS WAS GONE!!! It was a night and day difference. I was getting an unusual flavor from my Honey Pearry before this point (not bad but it seemed like there was A LOT more strawberry than I remember from the first time I tried vaping), but the delightful flavor I remember is back now.
I can now: vape my 24mg nicotine juice, dual micro coil, cotton wick, at 12 watts, in my Atomic RDA, and blow awesome clouds with absolutely no coughing.
At the moment I thought it was the difference in the material or some voodoo magic, but now I realize what it is.
Even though I had my air holes set full open (dual 3mm) and positioned right at the coils, the Ming Drip Tip's smallest inner diameter was too small to give me enough airflow.
This might be a little confusing to some, but if you look at it like a straw because air is a fluid just like water it makes more sense. If you have a straw that has a big opening at the bottom but a cocktail straw sized opening at the top your not going to drink any faster than if you had a regular little cocktail straw. If you have a straw that has a big opening at both ends but has a middle section like a cocktail straw, you are still not going to be able to drink any faster. Now if you have a big straw all the way through (like a smoothie straw), you can drink incredibly fast.
MY Math and Theories
My Trippy Tip is not hugely bigger in the smallest internal diameter than the Cherry Vape Ming but it is noticeable. I do have a plain flat metal drip tip that is barely bigger than the Trippy Tip (tenths of a mm) but I notice the flavor starts to mute a little. This tells me I am not reaching the full capabilities of the dual 3mm air holes with the Trippy Tip. The area of 1 - 3mm air hole is 7.069 square mm. So the area of 2 - 3mm air holes is 14.138 square mm. A single hole diameter (like drip tips have) that equals this total area is 4.500mm. This means to get the most out of my dual 3mm air holes I have to have a drip tip that has a smallest internal diameter measuring 4.5mm or greater.
So the goal is to find a drip tip where the smallest internal diameter is as big as you can-get-it/need-it.
Other possible solutions that drip tips may be able to solve (theories I have in mind but haven't been able to test yet):
-If something with too airy of a draw you might be able to tighten it up with a smaller internal diameter
-If you have a problem with burnt hits on a BCC, a bigger internal diameter drip tip might be able to help you create more negative pressure with less effort (which in turn helps pull more juice to the coil)
-Possibly vice versa as above if you are having flooding issues (smaller internal diameter drip tip)
-If you are not getting enough throat hit a smaller internal diameter drip tip may help
Now I'm not saying that this will help every one but:-If you have a problem with burnt hits on a BCC, a bigger internal diameter drip tip might be able to help you create more negative pressure with less effort (which in turn helps pull more juice to the coil)
-Possibly vice versa as above if you are having flooding issues (smaller internal diameter drip tip)
-If you are not getting enough throat hit a smaller internal diameter drip tip may help
-You may find out that you were doing everything right but getting bad results because of your drip tip (like I did)
-You may find that you can enjoy an RDA like other people (like I did)
-You may find that you can enjoy an RDA like other people (like I did)
-You may find out that you do not have a sensitivity to certain things you thought you did (like I did)
-You may find that you don't need to keep 2 different nicotine levels on hand (like I did)
-You may find that you do not need to drill ridiculous sized air holes
This will obviously not help you if:-You may find that you do not need to drill ridiculous sized air holes
-you are scorching your wick
-you are getting dizzy really fast (over nic'ed)
-you actually do have a sensitivity to certain things
-you are under dripping (getting dry hits from not dripping enough)
That is all I have for you folks. I hope I posted this in the right spot and that I wasn't too confusing. Just thought I would help out some people with my experience. -you are getting dizzy really fast (over nic'ed)
-you actually do have a sensitivity to certain things
-you are under dripping (getting dry hits from not dripping enough)
