RDA Single coil vs duel coil? Flavour chaser
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The single coil is easier to build. A dual coil at the same OHM as a single will have much more potential for flavor..
I use a single coil mainly for the simplicity.. But also because of the power levels I vape at and the device I'm using are more suited to generating flavor from a single coil.
I use a single coil mainly for the simplicity.. But also because of the power levels I vape at and the device I'm using are more suited to generating flavor from a single coil.
I prefer dual coils, but it really comes down to the particular atty and user preference.
I've vaped with both, built to the same resistance. If there is a difference in flavor output, it is so subtle that it is negligible.
When it comes to flavor I prefer singel coils. My daily setup is a Derringer RDA on a Sigelei Mini. Running a single coil 0.9ohm at 28 watts in it and the flavour is great. I was aiming for a heat flux at about 270 which delivers my preferred vape....
Very much depends on the atty. Larger attys might be better for duals, while smaller attys are great with single. What do you have? Or are you looking to buy?
Thanks for your reply everyone. I use single coil myself, would like to to try a double though. I'm still new at rebuilding so I'm going slow. I have a dark horse RDA clone. It's easy to do single coils on it but I've got big hands so its hard for me to do more than one lol. I have also been twisting 28 gauge kanthol to see if it makes a difference to taste, I know it lowers the resistance but I've got 24 gauge now so I've just been building normal single coils with that recently 
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To add to this, it also requires more power to heat both coils so youre going to kill your battery quicker, AND youre going to blow through juice quicker..
Wow really?? I use the Sig too, and switch between a Derringer and a Samurai Bonsai (theyre both practically the same thing) and I dont know if I could hit 28w without burning my throat.. Its been awhile though, and I just went down to 1 ohm coils about a month ago. I gotta go try that now, its 10w more than what Im at but maybe I can take that wattage now.
I use a single in my astron, double in almost everything else. It's a combo of many different factors- size of the chamber, Airflow, wattage...
After a few months trying lung hits I went back to mouth to lung inhales. That means I need a restricted air flow. I can't restrict the air sufficiently with 2 air supplies so there is only going to be one coil. I've been using rda's exclusively for a couple of months. Because most of them are built for lung hits it's hard to restrict the air sufficienlty. I have covered the unused air holes on several of my rda's with an adhesive tape we use in the shop for making labeling stickers. It works well.
It's been challanging to find rda's intended for restricted air and single coils. So far the only one that does it well is the titanium Achilles. With tape I've got a Derringer, tugboat v2, and a marquis working reasonably well for restricted air. Can anyone suggest other rda's that might work well for my vape.
It's been challanging to find rda's intended for restricted air and single coils. So far the only one that does it well is the titanium Achilles. With tape I've got a Derringer, tugboat v2, and a marquis working reasonably well for restricted air. Can anyone suggest other rda's that might work well for my vape.
how on earth is a single coil easier to build than a dual coil?
Dual coils setup DOES NOT require more power than single coil IF you are aiming for the same target resistance
Say to build 0.5ohm resistance
Single coil : you just need a coil of 0.5ohm
Dual coil : a coil of 1.0ohm x2
The end result is the same target resistance which is 0.5ohm and will draw the same amount of power.
Basically, with dual coil you are splitting the workload of one coil into two
Now because most likely you will be using thinner / higher gauge wire in dual coil setup to achieve same target resistance, those coils will have less lag than single coil, means coil will ramp up faster / more responsive.
Naturally dual coil setup needs extra airflow compared to single coil. So depends on your preference, you may end up getting too much airflow that may / may not hinders flavour buildup compared to just one airflow. For sure it will be more airy.
So if your RDA have a fixed airflow for dual coil. You have no choice but to use dual.
But if your RDA have option for single coil setup. Try single. If you feel the air draw is too tight, go for dual.
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True, but if you want it to heat up in the same time and have the same kind of response to the fire switch on the mod, then you NEED to drop the total resistance when adding coils. For example, if you already have a good vape with single coil using a 0.5 ohm coil and want to add coils, it is going to require two 0.5 ohm coils for a total resistnace of 0.25 ohm (in order to have a vape that works that same way except with more vapor and flavor).
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Can you explain more what you means by "to have a vape that works that same way" .
My measure of a quality of vape is from the amount of vapor and flavor.
Some times ago i tested 2 very same rda both on a mech mod fully charge.
One with single coil, one with dual coil, same target resistance.
They both more less vape the same way (similar flavor n vapor) except the dual have more airy feel because of that extra airhole but it depends on how quick or slow you suck/drag the air in.
I am curious about your findings too
is it the time to produce the exact same vapor u mean?
What I mean is that if you have a single coil at 1 ohm, and then build a dual coil build with total resistance of 1 ohm (so two 2-ohm coils), then the dual build is going to take twice as long to heat up. Sure, the circuit has exactly the same amount of power, only now that same power has twice as many coils to light up.
TL;DR : more coils works better with more power.
TL;DR : more coils works better with more power.
My suggestion for a starting point would be to take the coil build you like as single and double everything.
For example if you enjoy a 1 Ohm coil made with a certain wire gauge. Make 2 coils of it (in this example lands you at 0.5 Ohms), double the wattage compared to your single coil build and keep the airflow hole size the same, except now use both airholes.
For example if you enjoy a 1 Ohm coil made with a certain wire gauge. Make 2 coils of it (in this example lands you at 0.5 Ohms), double the wattage compared to your single coil build and keep the airflow hole size the same, except now use both airholes.
True if you are building the Dual Coil with the same gauge wire. But why would anyone do that. Heat flux would drop stone cold. Most dual coil setup would absolutely use a thinner/higher gauge wire to achieve the same heat flux and maintain the same surface area to the single coil setup counterpart.
Thinner higher gauge is the key for the faster ramp up speed to maintain if not exceed the single coil counterpart.
Lets put this into our smarty steam engine calculator
Steam Engine | free vaping calculators
They all fire @ 16 watts
Single coil target: 1 ohm using 28ga Kanthal
Heatflux: 284
Surface area: 51mm
Heat Capacity: 14.77
(The heat capacity of the wire affect coil lag. A lower number means a faster coil)
Dual coil target: 1 ohm using the thinner higher gauge 32ga Kanthal
Heatflux: 284
Surface area: 24.8mm each coil = 49.6mm
Heat Capacity: 4.62 each coil. Even if we double it still lower than the single coil counterpart.
and of course if someone for some reason decided to do dual coil using the same 28ga kanthal wire as in the single coil setup:
Dual coil target: 1 ohm using 28ga Kanthal
Heatflux: 71 --> its gonna be a cold vape..
Surface area: 107mm --> way too much surface area for that little heat and power to properly produce decent vape
Heat Capacity: 29.54 ---> yes it will need double the time...
Result: one messy vape..
not to mention i needs a full 13 wrap on 2mm..
They all just numbers in some extend, but i have tested it with many of my builds using this steam engine theory regarding relationship of heat flux, surface area and heat capacity and it seems pretty spot on to determine vape quality.
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