Coils. Not as easy as they look

[fiddleshe]

I watched many a YouTube video on building a microcoil. Well today at the vape shop I bought some unknown brand rba in the clearance bin. They said it was as easy to build as the Russian 91 I was currently vaping. Having no other rba atm and for $5.99 I took it home.

I took it apart. The deck looked similar to the Russian and having installed a coil on it before but not building it I was thinking piece of cake. I got out some wire I was told was 32 ga kanthal. I built what looked to be pretty decent coil for the first time and I installed it. Not hard. But it turned out to be .70 ohms. I don't care for subohms so I took it off and for our a new roll of labelled 32 gauge kanthal. I tried again. This time my coil sucked. So I tried 2 more times before I got one that looked decent. Then I realized you have to wind it around the posts counterclockwise. Messed that one up. New coil.
Finally I have a coil that came out at 2.4 ohms. I was aiming for 1.2. I wicked it. I'm leaving it for now. I want to try the mother's milk I bought damn it.

Long story short why did I come out 2.4 ohms? It was only 7 wraps.

 

[fiddleshe]

The rba says fogger on it.

 

[93gc40]

Single coil 32 awg at 1.2 ohms is way too hot.......... 2.4 would be better..
What is your core diameter.....


My fave kayfun kanthal builds are 2x32 twisted at 1 ohm to 1.3ohm. 5 to 7 wraps spaced on 2mm to 2.75mm.

Coil building does take practice..... wicking more.. pretty looking coils don't really vape better than ugly ones. Their just more photogenic.

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[fiddleshe]

I built over a 1/16 bit.

 

[fiddleshe]

When you say spaces what does that mean?

 

[ChelsB]

Single coil 32 awg at 1.2 ohms is way too hot.......... 2.4 would be better..
What is your core diameter.....


My fave kayfun kanthal builds are 2x32 twisted at 1 ohm to 1.3ohm. 5 to 7 wraps spaced on 2mm to 2.75mm.

Coil building does take practice..... wicking more.. pretty looking coils don't really vape better than ugly ones. Their just more photogenic.

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I'll second that, patience is key. I've built almost 100 coils and only a handful turned out to my liking. But I'll also picky[emoji4]

 

[93gc40]

When you say spaces what does that mean?

Non contact..... there is space between wraps...



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[fiddleshe]

Non contact..... there is space between wraps...



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Why and why not?

 

[93gc40]

Why and why not?

Personal preference.....

I find I get better wicking. Better flavor. And longer wick/coil life with spaced coils.



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[fiddleshe]

I'll try that next time. I saw on half the videos people pushing the coil together so that's what I did.

 

[93gc40]

Contact coil work also. They do look better....







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[fiddleshe]

Contact coil work also. They do look better....







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Figure they are easier to wick.

 

[93gc40]

Figure they are easier to wick.

Meh.... to me difficulty same contact vs spaced.

I guess if your hand wrapping coil and perfection is important... squeezing fixes errors.

Fwiw I use a coil making machine... homemade version of The Artistic Wire "coil gizmo" and my Kayfun coil wrapping rods started life as a 2.5mm clothes hanger and a 2mm bike spoke. 1/16" works just fine.. but the larger the ID the easier to wick.

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[kiba]

I watched many a YouTube video on building a microcoil. Well today at the vape shop I bought some unknown brand rba in the clearance bin. They said it was as easy to build as the Russian 91 I was currently vaping. Having no other rba atm and for $5.99 I took it home.

I took it apart. The deck looked similar to the Russian and having installed a coil on it before but not building it I was thinking piece of cake. I got out some wire I was told was 32 ga kanthal. I built what looked to be pretty decent coil for the first time and I installed it. Not hard. But it turned out to be .70 ohms. I don't care for subohms so I took it off and for our a new roll of labelled 32 gauge kanthal. I tried again. This time my coil sucked. So I tried 2 more times before I got one that looked decent. Then I realized you have to wind it around the posts counterclockwise. Messed that one up. New coil.
Finally I have a coil that came out at 2.4 ohms. I was aiming for 1.2. I wicked it. I'm leaving it for now. I want to try the mother's milk I bought damn it.

Long story short why did I come out 2.4 ohms? It was only 7 wraps.

First, kanthal has a high resistivity compared to other wires and heats up slower, if that is what you are aiming for but want a lower resistance I'd switch to a lower Guage, start with 28.

Second, make sure your coil's inner diameter is the right size, for a kayfun/Russian, that's around 2.5mm

Third, get yourself one of these.

Mine was 10-15 bucks on Amazon.

 

[wheelie]

Build on Steam Engine coil builder. A 32 g Kanthal, 2.mm coil, 6.35 wraps is 2.4 ohms. Want lower Ohms coil you need a lower wire. Like 28 Gauge Kanthal. CHEERS!

 

[93gc40]

Build on Steam Engine coil builder. A 32 g Kanthal, 2.mm coil, 6.35 wraps is 2.4 ohms. Want lower Ohms coil you need a lower wire. Like 28 Gauge Kanthal. CHEERS!

Or 2 strands of the 32 either parallel or twisted together....... the multi wire coil will give better flavor than the 28.. more surface area while being very close electrically.



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[wheelie]

Or 2 strands of the 32 either parallel or twisted together....... the multi wire coil will give better flavor than the 28.. more surface area while being very close electrically.



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[Two_Bears]

I watched many a YouTube video on building a microcoil. Well today at the vape shop I bought some unknown brand rba in the clearance bin. They said it was as easy to build as the Russian 91 I was currently vaping. Having no other rba atm and for $5.99 I took it home.

I took it apart. The deck looked similar to the Russian and having installed a coil on it before but not building it I was thinking piece of cake. I got out some wire I was told was 32 ga kanthal. I built what looked to be pretty decent coil for the first time and I installed it. Not hard. But it turned out to be .70 ohms. I don't care for subohms so I took it off and for our a new roll of labelled 32 gauge kanthal. I tried again. This time my coil sucked. So I tried 2 more times before I got one that looked decent. Then I realized you have to wind it around the posts counterclockwise. Messed that one up. New coil.
Finally I have a coil that came out at 2.4 ohms. I was aiming for 1.2. I wicked it. I'm leaving it for now. I want to try the mother's milk I bought damn it.

Long story short why did I come out 2.4 ohms? It was only 7 wraps.

Resistance is determined by the length of wire the coil is made from.

Thinner wire has higher resistance than thicker wire.

With my Juice and flavors i find a .8-1 ohm coil lovely.

 

[Two_Bears]

Resistance is determined by the length of wire the coil is made from.

Thinner wire has higher resistance than thicker wire.

With my Juice and flavors i find a .8-1 ohm coil lovely.

Someone will be along with a website that WILL help you build coiks to the resistance you want.

 

[kiba]

Somebody already mentioned it.

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