what type of coil produces best flavor? input greatly appreciated

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IMFire3605

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Simple, Center posted, elevated, 5/4 wrap, diameter can be any, wire gauge can be any on my RDAs, presently though it generally 24 or 26awg.

RTAs like my Kayfuns, tiger coils, 28awg twisted with 0.5 flat ribbon, 2mm, 10wrap opposing leg build

Subtank rda Decks, 28awg tempered Ni200, 12 wrap opposing leg, spaced spiral coils wrapped on a #14 machinist screw.

All produce great flavor, coil configs depending on the atty to play on the strengths of the atty, ymmv ;)
 

edyle

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ribbon wire? is that a type of flat?

yes it's flattened wire; like 0.1 mm x 0.3mm.
Basically you have more surface area.
It make sense.

My first roll of wire was ribbon wire, but I deliberately bought 34,32,30 and 28 gauge round wire in order to experiment with different wire gauge, and because people already knew what ohm ranges worked for round wire; steam engine calculator can show you your builds for round wire, not flatten wire.
 

edyle

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Flavor is produced by coil temperature & AFR (air fuel ratio). Saying a specific coil design gets great flavor simply means that you got the temp. & AFR right for the RDA you put it in.

There is surface area.
If you wrap a 28 gauge 1 ohm coil you get one result.
But if you twist some 34,32 or 30 gauge together to get the same 1 ohm on the same diameter and wraps, you now have the same coil electrically, but physically there is more exposed surface area to vaporize liquid.

And if you get flattened wire (ribbon wire) of the same ohms per inch as the 28 gauge, and build the same coil, again, you can have more surface area.
 

tj99959

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    There is surface area.
    If you wrap a 28 gauge 1 ohm coil you get one result.
    But if you twist some 34,32 or 30 gauge together to get the same 1 ohm on the same diameter and wraps, you now have the same coil electrically, but physically there is more exposed surface area to vaporize liquid.

    And if you get flattened wire (ribbon wire) of the same ohms per inch as the 28 gauge, and build the same coil, again, you can have more surface area.

    NO!
    More surface aria effects quantity of liquid vaporized, not quality of flavor. It may, or may not, change the flavor, but there is a lot more than just quantity of vapor that makes for best flavor.

    Here's one example:
    Many of the 'assumptions' we see are based on using a 22mm chamber. Well try those same assumptions in a 11mm chamber and see what happens. Then try them in a 9mm chamber. No different than attaining ideal fuel ratio in a 50cc engine compared to a 5 liter engine. So it's a mistake to confuse quantity with quality.
     
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    edyle

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    NO!
    More surface aria effects quantity of liquid vaporized, not quality of flavor. It may, or may not, change the flavor, but there is a lot more than just quantity of vapor that makes for best flavor.

    Here's one example:
    Many of the 'assumptions' we see are based on using a 22mm chamber. Well try those same assumptions in a 11mm chamber and see what happens. Then try them in a 9mm chamber. No different than attaining ideal fuel ratio in a 50cc engine compared to a 5 liter engine. So it's a mistake to confuse quantity with quality.

    The topic is certainly about flavor, and your comment, which I was responding to, was about flavour, however, my response was not about flavour (and does not mention flavour).

    What I was saying is that the difference between the different styles of coils all boils down to surface area.

    Whether surface area affects flavour is an open question.
     

    tj99959

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    The topic is certainly about flavor, and your comment, which I was responding to, was about flavour, however, my response was not about flavour (and does not mention flavour).

    What I was saying is that the difference between the different styles of coils all boils down to surface area.

    Whether surface area affects flavour is an open question.

    I'll buy that.
    We're saying the same thing, just in different words.
     

    CannonE

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    28g twisted is all I use. Great flavor and last FOREVER!
    In general, what's the point of twisting....I know "more surface area" is what's been given as the reason for better flavor....but if the internal diameter of the coil and the length of that coil "tube" is the same....I see that as the same surface area that's being heated. How does the twisting change it?

    And what's the method you use to twist the kanthal?
     

    Matty316

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    In general, what's the point of twisting....I know "more surface area" is what's been given as the reason for better flavor....but if the internal diameter of the coil and the length of that coil "tube" is the same....I see that as the same surface area that's being heated. How does the twisting change it?

    And what's the method you use to twist the kanthal?

    Twisting 2 or more strands of wire together creates more surface area than a single solid wire with the same internal diamiter because of the ridges made through twisting.

    If you look on youtube there's lots of tutorials on how to twist wire.
     

    CannonE

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    Twisting 2 or more strands of wire together creates more surface area than a single solid wire with the same internal diamiter because of the ridges made through twisting.

    If you look on youtube there's lots of tutorials on how to twist wire.

    I tend to think of the surface area (that is important) as the amount of wicking that is available to touch the coils. That's why I don't understand how those ridges touching makes any difference....since the surface area is still the same diameter and length of the coil, ridges or not.

    Maybe it's that the twisted wire keeps the coil gaps from being too tight and thus more airflow between?

    I don't know....just throwing that out.
     

    Matty316

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    I tend to think of the surface area (that is important) as the amount of wicking that is available to touch the coils. That's why I don't understand how those ridges touching makes any difference....since the surface area is still the same diameter and length of the coil, ridges or not.

    Maybe it's that the twisted wire keeps the coil gaps from being too tight and thus more airflow between?

    I don't know....just throwing that out.

    The space between the ridges gives the wick more room to expand into so has contact with a larger area of the coil i also think the small gaps that the ridges create between the wraps help also.
     
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    Completely Average

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    I tend to think of the surface area (that is important) as the amount of wicking that is available to touch the coils. That's why I don't understand how those ridges touching makes any difference....since the surface area is still the same diameter and length of the coil, ridges or not.

    Maybe it's that the twisted wire keeps the coil gaps from being too tight and thus more airflow between?

    I don't know....just throwing that out.

    Surface area isn't how much of the surface is touching the wick, it's how much of the surface is touching the liquid. The liquid fills into the gaps, even if the wick isn't directly touching it.


    Here's a simple way to explain it...

    Take an 8X11 sheet of paper and cut a 4X5.5" rectangle out of it. Lay it flat on the table. The side that is facing up has a surface area of 4X5.5 inches, right?

    Now, take a second 8X11 sheet of paper. Wad it up into a little ball, Unfold it and crush it up and again. Do this a few more times until it's nice and wrinkled all over. Then, gently spread the ball out until it's a 4X5.5" rectangle, half it's original size.

    Now, both sheets are the same 4X5.5" size, but the one you've wadded up and made all wrinkled has a total surface area of 8X11 while the flat piece that you cut out only has a surface area of 4X5.5". That's the effect that you're getting with twisted wire. Instead of a smooth wire you've got bumps and cavities, ridges and dips, and all of those increase the surface area more than if it was just smooth and flat.
     
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