This is why I always use a single coil over a center air hole design. The air is sucked right over the coil and creates a direct stream of flavor even at higher ohms. (Yes, my MS Paint skills are Vermeer-esc in their realism.)
I have been wrong about air flow in RDAs all the time...
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I've never used a Goon, so keep that in mind, but from what I can tell the airflow is aligned pretty much dead centre to where the clamps are. Using what we've seen at this point, it seems fair to say the coils should be as perpendicular to the posts as possible, and due to the design in the centre, I would be looking at getting the coils reasonably close to the airflow itself to ensure the air has a pathway around to the back of the coil.
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im gonna have to build one of these too now lol.
This is very cool, actually performing the experiments. However when you start filling in the gaps with cotton, or have a shallow deck etc. that looks to me it would affect the airflow once the proximity is close enough. Looking at my build, once the small amount of cotton goes in and walls off the sides and below the coil, the bottom of the atty is a small dead end without room for much anything to go and some air needs to be forced under there to keep it from becoming a dead zone. So, it probably still makes sense I have the bottom of the coil even with the bottom of the hole but not beyond that. My previous reasoning had more to do with the vacuum of the vapor exit, while after seeing this I get the same result just different reasoning. More tests with boundaries would prove this.
Also, with the multiple holes, do the streams still converge without a coil there? I'm currently guessing yes.
Also, with the multiple holes, do the streams still converge without a coil there? I'm currently guessing yes.
Thank you !! Superb video!! I never mind watching a long video when it contains good information and I will surely benefit from your efforts.We all make mistakes and it takes a person of great character to admit they were wrong. Don't beat yourself up I was wrong once too.
Hi mcclintock,
The closing in of the sides does not influence the Coanda-effect, or the circum-navigation of the air stream. Unless it is extreme. Having a closer space reduses the time for the turbulence to wander to the drip-tip. In extreme cases, like the Hadely and the Entheon RDAs, where 4 jet streams meets under the coil, I, and others, have found out that you should create a chamber under the coil (i.e. lift it much higher) if the coil is very big. This will result in a second stream pass the sides of the coil and enter the upper chamber,above the coil. But these are very special circumstanses. The Govad RDA is a RDA that does all this for you. It's impossible to build wrong on it, and I guess thats why it has been my favorite for a long time. Now it has competition.
Thanks for the input, and yes, the air converge on a multiple hole RDA even without a coil.
Cheers!
I didn't specify that it's the Goon 1.5 so the airflow holes are different. I'm using 8 wrap fused claptons. I tried placing the coils at a 3 o'clock position but I forces me to have the coils lowered really down to the point that the coil gets in the way of the space on the deck making wicking really annoying. Is this a circumstance that you would consider another position for the coils or I should keep to the way it is?
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In my case, the space between the coil and the cotton is about the coil diameter high and only as wide as the coil at the top. Above the coil is pretty much wide open. I think this 1) would affect the air stream some and 2) even if it doesn't, it wouldn't be bad to get more than half the air going under the coil, as long as none of the air completely misses it. While I have made some effort here to shape the air flow, this is a small coil in a medium size atty without a lot of cotton. So I think it's pretty common to have some major or "extreme" influences in the airflow path.
What even your first test does is show that the airflow hole(s) do direct the air and the resulting air stream does have some momentum. Any desirable offset is going to be small.
Hi!
If there is no room for cotton under the coil, that's fine. Just have cotton on the sides. On a dual coil like the Goon it's really important to be precise on the air flow, at least there should be no air that is missing the coil.
From the images it looks very nice. Good luck!
Small, but not insignificant, especially when aiming for efficiency. It's not like these things won't vape unless perfectly situated, but when minute adjustments can yield real gains, it's something to strive towards. Especially when dealing with a fundamental concept, where we can use this information to enhance whatever atomizer we wish to use!
Furthermore, one of the things Morten and I seem to share is a strong desire to minimize ramp up. Fast ramp up requires precise airflow otherwise you're going to scorch your cotton. I haven't dabbled into flat wire yet (though curiously have been eyeing it for months after seeing a commercial flat wire product in the UK), but even with my zippy little fused claptons, thick though they may be, I need perfect airflow or things get ugly real quick.
[EDIT] @dethmedalmuziq - those pics look about perfect to me. Doesn't look too low at all, unless you like to really fill up that well. How is it vaping?
It's vaping really well and I'm so happy we have Morten here. I'm glad I am benefiting from his genius video. I just have to place the wick slightly different than I usually do. I usually slide the cotton through the bottom of the coil to the sides but because the coil is lower to the deck than I had it before the video, I need to do it differently. But all is good. I'm vaping in my basement with nobody here to bother me and I am loving my goon most now since I bought it because I'm doing it the right way
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I'm at work right now and have to start cooking.. but I saved the video to my Watch Later list. Thanks for experimenting and sharing your results
Also that beard is just too great. Lol.
Also that beard is just too great. Lol.
I generally rotate from using the goon to the velocity v2. On the velocity v2 I installed the coils in the 3 o'clock position and have the bottom airflow open all the way. But on this rda there are 4 small holes for additional airflow towards the top on the rda. I'm wondering if the top airflow changes anything as far as coil placement.
Golden Greek, GP, By Leo, Titanium Mods, SvoëMesto....we have been using this style atty for years.
If it ain't broke...
Cheers
I
Golden Greek, GP, By Leo, Titanium Mods, SvoëMesto....we have been using this style atty for years.
If it ain't broke...
Cheers
I
Bingo! Squape and Taifuns too. Easy to build, direct airflow and no need for two poorly placed coils due to lazy design.
Maybe its just my imagination, but it seems that when i drip on my limitless+ with the tank empty, the empty tank serves as an expanded air chamber, producing huge cloud. The dead rabbit i have is very nice for flavor but cloud production is way less than the limitless+.
Other have to chime in on tanks, but regarding the Dead Rabbit, it will never be a cloud chaser unless you modify it. I'll make a vide on that fix soon.
I really like the dead rabbit, even though i just got it 2 days ago. Im not at all disappointed with it. Ive somehow collected a couple different types of atomizers, go figure lol. If i just want to make big clouds, my tfv8 works very well for me. The limitless+ makes a nice thick cloud as well. My only regret, i guess, is that i didnt start doing all this earlier. Ive only been off cigs and started vaping since august.
I stopped smoking the first day I vaped, 4 years ago. Then and there I decided to spend the rest of my life in awesome flavors
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