coil build question

[betterthanyou]

new to this still, had a question.

Would it be effective (or possible) to use two independent strands of kanthal wire and make a micro coil with each strand of wire, and then seat it underneath the screws? Would that be a dual coil setup?? Or would a dual coil be one single strand of kanthal wire wrapped on two separate ends?

 

[PhatRon]

Technically they are both dual coil systems but the two separate would be easier to build, especially if you are new to building coils.

What are you building this on?

 

[fogcreature]

Both descriptions sound like dual coil setups. As long as both coils fire correctly and work in your setup. Some atomizers have dual negative posts specifically for dual coils which some use to create quad coils. I think using two separate strands would be the way to go though. Try it both ways though man rebuildables are all about innovation and experimentation

 

[betterthanyou]

Technically they are both dual coil systems but the two separate would be easier to build, especially if you are new to building coils.

What are you building this on?

I'm using a Kayfun 3.1 on an evic.

 

[betterthanyou]

if I use two separate strands to create a coil on each is the resistance measured by the ohm rating of each coil added together?

 

[MattyB1503]

For any dual coil set up the resistance is half. This is assuming each coil is the ~ same resistance, and example would be two 1 ohm coils equal a total resistance (at the 510) of 0.50 ohms. Dual coil implies you're running coils in parallel, you can read up on series and parallel resistors if this is unclear as the rule applies. A coil is a resistor.

Nested coils or dual stranded is defiantly achievable. It is somewhat of an advanced build though.








Nested quad micro coils.

28awg Kanthal, 1/16th ID, 7 wraps. Total resistance 0.22 ohms.

If you are gonna attempt something like this make sure you have a mod and batteries that can handle the current draw. I suggest the Sony 30a vtc3's or vtc4's.

I've also done a nested build on a KF/KFL using the carto method. 1/16th fits perfectly in the air hole, usual do 7 or 8 wraps.

I think the over all advantage of a nested build is a low resistance while retaining a larger surface area. Produces thick dense flavorful vapor IMO.

 

[betterthanyou]

For any dual coil set up the resistance is half. This is assuming each coil is the ~ same resistance, and example would be two 1 ohm coils equal a total resistance (at the 510) of 0.50 ohms. Dual coil implies you're running coils in parallel, you can read up on series and parallel resistors if this is unclear as the rule applies. A coil is a resistor.

Nested coils or dual stranded is defiantly achievable. It is somewhat of an advanced build though.








Nested quad micro coils.

28awg Kanthal, 1/16th ID, 7 wraps. Total resistance 0.22 ohms.

If you are gonna attempt something like this make sure you have a mod and batteries that can handle the current draw. I suggest the Sony 30a vtc3's or vtc4's.

I've also done a nested build on a KF/KFL using the carto method. 1/16th fits perfectly in the air hole, usual do 7 or 8 wraps.

I think the over all advantage of a nested build is a low resistance while retaining a larger surface area. Produces thick dense flavorful vapor IMO.

Thanks for the response, I appreciate it very much. I forgot that you take half the ohm measurement for each of the coils and cut it in half for total resistance.

I currently will be using an evic (I believe the minimum resistance on the evic is somewhere between 1.2-1.5, so I would need to build 3 ohm coils. Would this nested build work on my evic? And these are the batteries I currently have Samsung ICR18650 2600mAh Battery

 

[MattyB1503]

Any ICR battery should not be used in a mechanical, however they are pretty safe in a evic or any other regulated device.

Unfortunately until you graduate to a mech you're gonna be limited to single coil builds. Even if you have a DNA20 mod (which I have owned one) you're still limited to 20 watts and 7 amps. You may get it to fire but it's not optimal even for that chip set.

So, I would probably try the carto build on the KF with single wire.

 

[betterthanyou]

Any ICR battery should not be used in a mechanical, however they are pretty safe in a evic or any other regulated device.

Unfortunately until you graduate to a mech you're gonna be limited to single coil builds. Even if you have a DNA20 mod (which I have owned one) you're still limited to 20 watts and 7 amps. You may get it to fire but it's not optimal even for that chip set.

So, I would probably try the carto build on the KF with single wire.

Can you explain why dual coil builds will not work on my evic? Pardon my ignorance on the subject.

 

[MattyB1503]

You simply don't have the power to push at both coils. What does the evic top out at, 15 watts (?).

So you'll be pushing ~ 7.5 watts at each ~ 3 ohm coil. It will be way more efficient to build a 14 to 16 wrap, 28awg kanthal micro coil (on 1/16th bit), which should ohm out to ~ 1.7 to 2.0 ohms, then push the full 15 watts at that single coil.

VV an VW are way different then mechs; remember with a mechanical you only get that what the batter has (~3.7v). On the evic you can crank it all the way up, where on a mech you have to sub ohm to hit 15 watts.

 

[betterthanyou]

Dual Coil Kayfun Setup
this guy is using dual coils on his evic. however his total resistance is .7, I thought the evic minimum resistance was like 1.2?

 

[betterthanyou]

You simply don't have the power to push at both coils. What does the evic top out at, 15 watts (?).

So you'll be pushing ~ 7.5 watts at each ~ 3 ohm coil. It will be way more efficient to build a 14 to 16 wrap, 28awg kanthal micro coil (on 1/16th bit), which should ohm out to ~ 1.7 to 2.0 ohms, then push the full 15 watts at that single coil.

VV an VW are way different then mechs; remember with a mechanical you only get that what the batter has (~3.7v). On the evic you can crank it all the way up, where on a mech you have to sub ohm to hit 15 watts.

this makes sense. thanks!

 

[MattyB1503]

Dual Coil Kayfun Setup
this guy is using dual coils on his evic. however his total resistance is .7, I thought the evic minimum resistance was like 1.2?

That guy doesn't even have proper coil placement. If you build a micro over the air hole you'll blow his build out of the water.

No problem man.

 

[ConradM]

You simply don't have the power to push at both coils. What does the evic top out at, 15 watts (?).

So you'll be pushing ~ 7.5 watts at each ~ 3 ohm coil. It will be way more efficient to build a 14 to 16 wrap, 28awg kanthal micro coil (on 1/16th bit), which should ohm out to ~ 1.7 to 2.0 ohms, then push the full 15 watts at that single coil.

VV an VW are way different then mechs; remember with a mechanical you only get that what the batter has (~3.7v). On the evic you can crank it all the way up, where on a mech you have to sub ohm to hit 15 watts.

Why is that dual coil clearos handle vv/vw just fine?

 

[betterthanyou]

Why is that dual coil clearos handle vv/vw just fine?

I was also thinking this. Take an aspire BDC for example. Dual coil 1.8 ohm total resistance meaning two 3.6ohm coils. These run fine even on less than 10W.

 

[MattyB1503]

Why is that dual coil clearos handle vv/vw just fine?

Higher gauge wire like 34 or 36 with NR legs. If you want to build a RBA with that then you could get a dual to work well on an VV/VW.

 

[ConradM]

Higher gauge wire like 34 or 36 with NR legs. If you want to build a RBA with that then you could get a dual to work well on an VV/VW.

Here's a rebuilt Aspire BDC with 32g kanthal on a Vamo. I think something similar in a Kayfun would work fine on a Provari.

https://www.youtube.com/watch?v=pwgkYUgZXHI

 

[JD1]

One way to do a single coil duel wire is of course to just twist the wire, then wrap the coil. That works well and some folks prefer it, but I'd rather fold the wire in half and start wrapping the two wires side by side as if you were wrapping one wire. It makes for a longer coil that way but still works well, and worth a try to see which you like best.

 

[betterthanyou]

One way to do a single coil duel wire is of course to just twist the wire, then wrap the coil. That works well and some folks prefer it, but I'd rather fold the wire in half and start wrapping the two wires side by side as if you were wrapping one wire. It makes for a longer coil that way but still works well, and worth a try to see which you like best.

would the ohm properties be the same with this method as with a dual coil in parallel?

 

[ConradM]

I don't understand exactly what JD1 is saying but, if the coils are connected at one end and not to the posts it would be in series which is basically like one big coil. Also, a twisted wire coil is nothing like a dual coil. People do that to drop the resistance on a single coil even lower.