Twisted coil jumping ohms

Discussion in 'Coil Building' started by snowbeast, Dec 7, 2017 at 3:11 PM.

  1. snowbeast

    snowbeast New Member

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    I'm a new coil builder. I do everything by hand, including twisting my wire.

    Tonight I spent an hour trying different coils and configurations on my voopoo drag and peerless rda.

    I built a 3mm id, 24ga ni80 coil with 6 wraps. First reading was 0.17ohms whilst pulsing and eliminating hotspots. Wicked it and it hit like a champ. 5 mins later it read at 0.27ohms and now it's on 0.3ohms and I can taste cotton.
    Can anybody suggest why a coil will jump around like this? Keen to learn
    Thanks in advance[​IMG]
     
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  2. Wtmke1

    Wtmke1 Silver Contributor Member For 2 Years

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    May be contact screws not tight. Usually when my ohms jump I have a leg not tight enough

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  3. snowbeast

    snowbeast New Member

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    Thank you. It's 22:20 here in South Africa. Ill check the legs as I get up tomorrow morning. I never thought of that.
     
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  4. HondaDavidson

    HondaDavidson Gold Contributor Member For 1 Year

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    Jumping ohm is almost always a loose connection somewhere.
     
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  5. HondaDavidson

    HondaDavidson Gold Contributor Member For 1 Year

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    Last edited: Dec 9, 2017 at 7:54 AM
  6. snowbeast

    snowbeast New Member

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    It's settled on 0.29ohms.
    The one connection was loose.
    Heats up evenly from the middle, but thinking of running a second coil next time
     
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  7. zombievapereview

    zombievapereview Bronze Contributor

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    Bro you need to twist that wire way more until it's even. Try this... I twist by hand as well.. also n80 will jump and settle higher than when it was installed. That is normal. Do yourself a favor and twist the shit out of it. [​IMG][​IMG][​IMG][​IMG]

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  8. zombievapereview

    zombievapereview Bronze Contributor

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  9. zombievapereview

    zombievapereview Bronze Contributor

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    I have started using kanthal again on twisted builds. I never do 2, I think 28g quad reigns supreme. Better taste

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  10. Wtmke1

    Wtmke1 Silver Contributor Member For 2 Years

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    Do you twist all four strands at once or twice two sets then twist the sets? If you can understand my giberish

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  11. zombievapereview

    zombievapereview Bronze Contributor

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    Dude it's not gibberish. Your curious and that's what got me into building. If you twist 2 sets then twist together tightly that is called hive, if your twist two sets then back twist that makes chain wire. To do quad twisted you have to twist all 4 wires at the same time together.

    Here's a quad and two hive wire[​IMG][​IMG][​IMG]

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  12. Wtmke1

    Wtmke1 Silver Contributor Member For 2 Years

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    Oh cool deal. Thanks

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  13. zombievapereview

    zombievapereview Bronze Contributor

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    No problem. You just need to figure out your sweet spot and that feeling when it's right about to head but before it bunched up

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  14. HondaDavidson

    HondaDavidson Gold Contributor Member For 1 Year

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    There really no wrong way to twist wire..... but yah more small wire is better than a single wire to get like power outputs.... experiment 4x twisted then try twisting pairs then doing a pair and aiding th 3rd and 4th with opposite direction of twist for each added strand... ect... steam-engine.org will even do calculations foe you. Just note error us greater for each strand of wire.

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