What's the most coils I can power with a DNA250?

Discussion in 'General Rebuildable Discussion (RTA/RBA/RDA)' started by vapesmooth1234, Feb 17, 2018.

  1. vapesmooth1234

    vapesmooth1234 Member For 1 Year

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    I have a DNA250 with three 3000 mAh vtc6's.
    I'm trying to for fun now and then vape a giant ~30mm RDA with 4-6 coils in it (as much vapor as possible).
    I didn't realize until I saw the video below that a regulated MOD like DNA250 isn't really supposed to power so much coil mass. It's a .04 or .06 ohm build by the way in the video.

    According to this reddit though, the DNA250 CAN fire down to .05 but at only 150 watts.

    "It will fire down to 0.05ohm in regular wattage mode, but it will only hit 150w max. To hit 250w it needs to be at least 0.07ohm. Check out page 5 of their spec sheet for the actual board from EVOLV."

    https://www.reddit.com/r/Vaping101/comments/5uiyu2/dna250_minimum_resistance/


    Bascailly, I'm just asking how many coils (quad? sextuple?) and how many wraps (5-wrap? 8-wrap?) and what Id (3.5mm? 4.5mm?) can I put in an RDA and get some giant vapor with the DNA250? Once I know that, I can decide if I might just get a quad coil RDA and put 4 somewhat smaller coils in it, or maybe just a large like 28mm RDA for two very long like 9-wrap coils in it.
    No, sorry I'm not gonna get an unregulated mod just for this.

    I have right now fused klapton kanthal 28x2 - 32ga.
    I ordered SS fused Clapton 26*2+30.
    I'll buy whatever wire is suggested for this though.

    I would hope ramp-up is not super long.
    I know batteries won't last long but I'm only going to vape this RDA on rare occasion. Thanks.

     
  2. HondaDavidson

    HondaDavidson Gold Contributor Member For 2 Years

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    How many pairs of coils can you fit in the attie? thats the limit..... Steam-engine.org might help.
     
    r055co and St.Roostifer like this.
  3. r055co

    r055co VU Donator Platinum Contributor Member For 2 Years

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    To figure out resistance, wraps, etc. www.steam-engine.org is your best friend.

    SS is an excellent option but fused claptons 26g is a lot of wire mass especially with 30g wrapping wire. Ramp up time is going to be brutal not to mention heat retention especially with 30g wrapping wire. I love fused claptons but use 38g - 44g wrapping wire, I wouldn't use anything fatter than 36g for wrapping wire. The ramp up time and heat retention sucks.
     
  4. vapesmooth1234

    vapesmooth1234 Member For 1 Year

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    basically I'm just asking for an answer that will sound something like this, although this might be completely incorrect (because I dunno): "with a DNA250 triple vtc6, you should be able to fire quad 3.5mm 7-wrap coils of 316LSS 26*2+30 or the same if 6-wrap Kanthal 28x2 - 32ga.

    Or.... maybe the answer is that I can fire 6 coils in an RDA like the So Horney. Or.. maybe I should stick with a triple coil RDA with 8-wrap coils and get better ramp up?

    Keep in mind too, I don't vape very high wattage. I have TFV8 T-10 coils (5X doubled-up parallel round coils they claim to be '10 coils), and says on the coils "50-300 watts, best at 130-190" but I'm vape them at only like 80 watts.
     
  5. r055co

    r055co VU Donator Platinum Contributor Member For 2 Years

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    Will it fire? Of course it will, but keep in mind what was pointed out and that is Ramp up time and Heat.

    There's much better ways to go about this and that is less wire mass.
     
  6. Carambrda

    Carambrda Gold Contributor Member For 1 Year

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    First off, the VTC6 is too weak for 250 watts if using 4 batteries, let alone using only 3 batteries. Just get the VTC5A instead. Secondly, there is no standard answer to your question of how many coils you can fire and still get the amount of vapor production you are looking for. It basically depends on the design and size of your atomizer in conjunction with your coil building skills. One way to up the resistance of your coil build if going for multiple coils is to mount the coils in a series configuration (as opposed to using a common-traditional parallel connection scheme), which normally requires an atomizer that features a neutral post (e.g. the Vaperz Cloud Temple 2 NP, which is a 30mm RDA), but which can also be achieved by creating a so-called bridged coil build. In addition, ramp up time can, at the sacrifice of a certain amount of sustained power output, be tamed by setting up a custom power curve in EScribe in such a way that the wattage briefly peaks at the start of your puff similar to how a standard preheat works, but hugely more flexible to work with, bringing to the table an advanced way for you to custom tailor the ramp up.
     
  7. vapesmooth1234

    vapesmooth1234 Member For 1 Year

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    hmm I have to look into "power curve" if I can do that with escribe or DNA with kanthal (just bought fused SS claptons though). I think maybe 'steam engine' (software?) is also needed and then somehow transfer file to escribe.


    can anyone answer final question: If I do get a 6-coil RDA like the So Horney, and find that I can't fire 6 large (6-wrap 3.5mm or so) coils with a DNA250, can I just make those like 4-wrap coils and a smaller diameter (like 2mm) and then SPACE the coils (like a spring) and then it should fire fine, right?

    I'm just seeing which rdas I should even consider. If I can fit 6 smaller spaced coils in something like the so horney, maybe I'll get that, but I'd rather an RDA which isn't coils stacked on top of each other, so if I can get a similar vape with a quad coil with a usable juice well, I might get that instead.
     
    Last edited: Feb 19, 2018
  8. HondaDavidson

    HondaDavidson Gold Contributor Member For 2 Years

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    Get over numbers of coils... a good vape can be had on 1.....it all about the metal in the coil(s) and it's mass.. the only reason to do multi coil builds is if you don't have enough space for that one BIG coil.... but you do have space for 2 or more small coils.

    The amount and type of metal you use determines how many watts you need to reach desired temperature. Wether in TC or VW or on a mech. The more metal a coil has the more wattage.. and the more heat it can produce.... Noting a small coil at 100 watts will be hotter than a big one.... but may not produce as much heat. (Think fire. Wooden match burns at the the temps as a camp fire... which is hotter) A big coil takes longer to heat and cool.......

    This is what steam-engine.org is for. It helps you build your coils..... it can help in setting up the mod but that's not the purpose.

    Sent from my SCH-I605 using Tapatalk
     
  9. Brad Mitchell

    Brad Mitchell Silver Contributor Member For 3 Years

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    It comes down to resistance and mass. If the resistance is high enough to fire but you have so much mass (big coils/many wraps) then you will run out of watts.

    A 5 wrap parallel 28 kanthal might work. You would be at .12 ohm
     
  10. SteveS45

    SteveS45 Diamond Contributor Member For 2 Years ECF Refugee

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    Just because someone doesn't agree with a theory or practice does not mean it can't be done.

    upload_2018-2-19_10-23-10.jpeg
     
  11. SteveS45

    SteveS45 Diamond Contributor Member For 2 Years ECF Refugee

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  12. Zohmbiebuilds

    Zohmbiebuilds Silver Contributor

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    I want to try the squonky Kong

    Sent from my Z981 using Tapatalk
     

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