Thanks again:-) Cool that you liked this one!

Thank you! I have not seen anyone else publish such findings, but I guess someone does it, and I have learned that at least one other developer is thinking about it. My highest hope is that there will be some properly developed RDAs soon:-)

Morten Oen Nah bettery mooch is the dude that tests different batteries and makes sure they aren't over rating their amp limits and checks for safety and stuff like that. I think you are the only one doing testing on airflow for rdas, which is also amazing! So great seeing more technical analysis of different aspects in vaping. Keep doing what you do, you are putting out amazing content! I hope you get an opportunity to design your own RDA some day, I bet it will be outstanding!

Thank you, Marco! And I'll do my best to keep on flowin' 😎

Thank you Matthew! I'll do my best. Lots of new stuff on it's way!

Thanks Nurb! And thank you for the tip. Very useful for angled air flow. Do you mind if I use that trick in a video?

Sure go ahead. No worries. :-)

Thank you Richard. Had to think about this one for a long time before executing it. There are just so many variables at play here.

I have used the Recurve for some days now. I just placed the coil right inside the air holes. Nothing fancy. Might do a video on it. Great little thing :-)

Thank you Wheel! I will look into a simulator, but I know nothing about them yet. Regarding two colors, that is exactly what I'm doing now. I have clear air comming in from the right, and vapor comming in from the left. But a computer rendering of the flow would be nice. Thank you.

I have spent the day looking at programs and simulators. None of them are useful to us regarding the details of flow and presure. But a lot of them can be used to study the angles of air holes. And I am glad and releived that all of them has shown that my calculations based upon observation has been spot on! Like the dotRDA, the Dead Rabbit, Pulse 22 & 24, and so on. I will include some of the graphics in my up-comming MadDog RDA air flow review.

Ha ha I was just looking at software too. Your findings sound exciting. I found Blender as the free option but I am not sure how well it simulates complex vortex interactions or pressures as you mentioned. Houdini is much more scientific and accurate in its approach but a beast to learn. It is used for all physics simulations in movie sfx where destruction, tornados, avalanches etc are needed. I bet there is some type of dedicated engineering software for the aeronautics and car industries. You can't beat the real thing though. Anyway, looking forward to your future experiments, regards wheel333.

Hi Khalil!Thank you for comment. The Goon is easy (both of them). Place your coil inside of the air hole so that the center of the hole is pointing at 3 o'clock (or 9 o'clock). Normaly there should be a space of 1/2-1mm between the edge of the well and the coil. Make sure there is at least 2mm space behind the coil and the center block. You can experiment by lifting the coil a 1/2mm from this ideal position, but no more.

Thanks man! Look at my wasp nano video. That should give you a hint, and watch my "air flow in single coil RDAs" video for the generic concept.

Hi! It is on my list, but the Phobia is pre order still. Nobody sends me anything, so I will have to wait untill it's retail available. From the images I have done some testing, and it looks like it's flaved, but I cant say for sure untill I have one in my hands. From the images I have done some computer simulations and air flow chamber testing, and the air flow from the sides will most likely shoot upwards in a 70 degree angle. I do not know if it will miss the coils entirely, but it looks that way. They could have fixed this so easily...

Thanks Ampdizzler! I have a Ceto here somewhere. Got it from Cthulhu as a gift. I'll look into it when I get time:-) I'm testing something else just now. Stay tuned and give me a couple of weeks:-)

Okay thanks i will be watching always .. And cnt wait to see that mesh when u get to it although the ceto was actually a very bad device out of the mesh ones the two that are good are the vapefly mesh plus and the digaflavor mesh pro but either way id like to see your opinion on them and the airflow and what not love the stuff you do

Thanks! lots of hard work on this one.

Thank you Kwan! I am working on that, but all my conclusions have always exceptions to them. But once you realize that air moves in in a straight line untill a force (or an object) acts on it, you should be able to reach a conclusion only by looking at an RDA :-) But I have an idea on how to show all I know in an animated video...

Morten Oen wow that will be awesome, thanks Brother

Hi, thank you for your insights. The coil needs to have a continous convex shape for the air to follow it around. In theese speeds a narrow slot will be a part of this effect I think.

Thanks Morten. Looking at Streamlining, do you think air resistance or drag is desirable in a coil shape? A flat surface has 100% drag, high turbulence, a round surface has 50% drag, less turbulence, a shallow teardrop has 15% and some turbulence, while an elongated tear drop has 5% and no turbulence. This would suggest that an elongated tear drop coil would have the least drag (zero turbulence) but an increased total surface area compared to a round coil of the same diameter. As your studies have shown, the air flow travels straight, regardless of the location of the suction so ideally, the air intake port would be positioned to direct air to the rounded edge of the tear drop. This begs the question though, how does air velocity across the surfaces and the time duration on the surface affect flavour and vape density and which I think, would be a factor of the air port size and the size of the slot (between coil and posts).

Your theory is correct when speeds are high enough. At the speeds we vape at, a smouth, round (cylindrical) shape have very little drag, because the separation points are pushed way back (due to Coanda effect). We are talking about Reynolds numbers (Re) at 3.5 (if I understand the calculators right). And at these Re's, as long as the coil have a continous convex shape, there should be little to no drag. Anyways, in practical use, it looks like the effective cooling let you ramp up the Watts, so you get more vape. Some say that gives bad flavor, other says this kind of dry vape is what they prefere. But the better the cooling, the less droplets in the vape. I really don't like to get a mouthfull of e-juice, so I prefere a properly placed flatwire coil. Others like a framed, stapled clapton away from the air holes and close to the drip tip, only cooled by drifting turbulence. So the right shape, the right position, the right coil wire, is a matter of taste. I just want to show what is happening, so people can make an informed choise. Make sense?

Makes sense. There are variables in terms of the atomiser set up as well as an individual's tastes and preferences so in the end, there is no ''one size'' fits all. Having said that, your vids illustrate an optimal set up for the atomiser in order to leverage the benefits of the design or mitigate the flaws. As for individual taste, there is not much you can do for that :-)