MAGIC RDA for only 10 Dollars !
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So, if I make a dual coil and test it on my APV and it reads 1.2ohms... does that mean it has two .6ohm coils? Or two 1.2ohm coils?
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it means you have two 2.4 ohm coils....
Because you doubled the flow, you are essentially cutting the resistance in half...
(something i learned with custom automotive speaker/sub-woofer installs
)it also messes up the amperage loads, but im not a mathematician so i cant give you those numbers...
ohms law has to be modified to calculate dual coils, so its not so cut and dry.
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it means you have two 2.4 ohm coils....
Because the two coils run in parallel you are essentially cutting the ohms in half...
(something i learned with custom automotive speaker/sub-woofer installs
it also messes up the amperage loads, but im not a mathematician so i cant give you those numbers...
ohms law has to be modified to calculate dual coils, so its not so cut and dry.
No modifications needed. If you want to figure the amperage, use the total resistance (1.2Ω in this case) in your Ohm's Law formulas.
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hmmmmmm. i was told the amperage changes....
but wasn't explained as to how, so i don't really like to preach it.
But i do know that dual coils mess with wattage on PV's, well it feels like it anyways, so that's why i assumed there was some validity to that statement.
Since it was never explained as to how, I feel obliged to explain as to how it's not.
Treat a parallel setup as 2 separate 2.4Ω single coils, and do the calculations:
4v / 2.4Ω = 1.67A per coil.
Since they have the same current source, the sum of the currents will equal the total current.
1.67 + 1.67 = 3.33A (<--on the surface the math is wrong, but the 1.67 is actually 1.66666666666666........so the math is correct)
Then check it against the calculations for the total resistance of 1.2Ω:
4 / 1.2 = 3.33A
Treat a parallel setup as 2 separate 2.4Ω single coils, and do the calculations:
4v / 2.4Ω = 1.67A per coil.
Since they have the same current source, the sum of the currents will equal the total current.
1.67 + 1.67 = 3.33A (<--on the surface the math is wrong, but the 1.67 is actually 1.66666666666666........so the math is correct)
Then check it against the calculations for the total resistance of 1.2Ω:
4 / 1.2 = 3.33A
it means you have two 2.4 ohm coils....
Because you doubled the flow, you are essentially cutting the resistance in half...
(something i learned with custom automotive speaker/sub-woofer installs
it also messes up the amperage loads, but im not a mathematician so i cant give you those numbers...
ohms law has to be modified to calculate dual coils, so its not so cut and dry.
So an Innokin iClear Dual Coil 2.0ohm clearo that reads 2.0ohms on my apv really has two 4.0ohm coils in it?
Or are all the cartos and clearo dual coils wired differantly that we are these RBA's?
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The thing about duals people aren't getting is that you're using that lower voltage to apply heat to a larger surface area. You could take a wire (e.g. 32ga) and make one twisted coil at 1.2ohms or use the exact same length of wires to make two individual coils of 2.4ohms each. The difference is that in your dual coil setup, you have twice as much wick/juice that you're trying to heat up with the same amount of power. This is why with dual coils, you'll typically want to run a higher voltage/wattage as compared to a single coil setup of the same resistance.
Unless otherwise noted, all "OEM" dual coils will be in parallel AFAIK. So yes, a dual coil 2.0 ohm atty will have two 4.0 ohm coils in it wired in parallel. If it were in series, then you'd have two 1.0 ohm coils, but that's not ever the case. Again, AFAIK regarding off the shelf dual coil atty's.
Just got one of these RBAs in the mail... First RBA ever... Just wondering if there is some kind of break in period on the stock coil and wick as there is a weird taste coming off the atty... My MT Baker Caramel Candy tastes really weird... Kinda like pakalolo... lol... It is measuring at 2ohms and I am vaping it at 6-8ohms... Can I get some suggestions please...
Rinse the whole RBA with water when you get them to get rid of any machine oil or other crud. Some silica also has a funky taste when new unless you torch it about 10-15 seconds first.
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Just thought I'd share one of my recent RDA builds. I call it the Bunny build (single wire dual coil gravity fed wicking system):
http://www.e-cigarette-forum.com/forum/tutorials/402928-cottontail-bunny-octopus-rda.html
http://www.e-cigarette-forum.com/forum/tutorials/402928-cottontail-bunny-octopus-rda.html
Awesome build man! Not sure exactly what I'm going to do when the stock build wears out, but I've been leaning toward a vertical wick since the RDA seems perfect for it. Might give this a try.
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Thanks, bud. Give it a shot. This build holds over half a ml of juice.
Sent from my pho...my portable communications, navigation, and media command console.
Sent from my pho...my portable communications, navigation, and media command console.
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Actually I prefer SS wick in my IGO. =]
Dual Coil SS Mesh setup? =D
As for the above post
This thing is a vapor monster but the IGO-L ended up surpassing it once I setup SS wicking. I wonder how well SS wick(s) would preform in an RDA... Perhaps a test is in order. As for that issue with over dripping, and also the issue some have had with the o-rings being loose and the top coming off, a small screw fixes that and you can drill your own air holes fairly easy since the top is aluminum. Worked great for mine!
.21 ohms, 28g Kanthal, 1/2 wrap
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