low end coil build.

[aliadnan116]

hello everyone.
Im using an evod and going to upgrade in a few weeks but as for now gotta work with what i have.
I have a pheonix v6 rda clocking around 2ohms on a single coil on the evod battery.
I was wondering that if i make a dual coil build and stay at the same amount of resistance (1,8 or above ) by making two coils at around 3.8ohms each which will make the combined resistance around 1.9 ohms, will that make a difference because i would then have 2 heating elements instead of 1 ?
I hope you guys can help and sorry if i sound really dumb or stupid, im a newbie.

 

[Robert Dupre]

Yes it would make a difference but you would need more power to beable to geat the coils properly

 

[drunkenbatman]

Heya!

1. You have it exactly right that doubling your coils will halve your ohms -- so two 2ohm coils would look like 1ohm to the battery.

2. A second coil gives you twice the surface area to vape eliquid, but you're also halving the voltage going to each coil. So before, you had 4V going to one coil, and now you'll have 2V going to each coil -- so you won't be doubling your vapor production.

I'm not up on the specifics of your battery, but you'd generally either need a lower ohm (pulling more amperage) within your battery's safety constraints or pumping out more wattage at the same ohm to see a doubling of vapor.

 

[HecticEnergy]

Disclamer: I am no battery expert, this is based on what I've read/experienced.

I think it only requires more ramp up time. Your battery doesn't know what it is powering, 1.8ohms is 1.8ohms - requires same amperage no matter how many coils.
Think of it as a kanger head - they have dual coil heads that work just fine.
You will want to use thinner wire like 32ga or a higher gauge... 28ga MAY work. I would say 26 ga is out of the question, but I don't know for sure. I'm not sure about the science behind wire gauge and heat flux, but I'd think steam-engine.org has some words on it. The higher the gauge the smaller the coil - fewer wraps and/or smaller inner diameter, so the heat will be more concentrated. You didn't mention wicking material, but I think it may burn up the juice faster than the coil can wick it if you use a micro coil. That will result in a burning the cotton wick. I would say with 32 ga you may need to do a spaced coil, and possibly switch to a more heat resistant wick like silica or something along those lines.

 

[HecticEnergy]

Heya!

1. You have it exactly right that doubling your coils will halve your ohms -- so two 2ohm coils would look like 1ohm to the battery.

2. A second coil gives you twice the surface area to vape eliquid, but you're also halving the voltage going to each coil. So before, you had 4V going to one coil, and now you'll have 2V going to each coil -- so it'd be about the same vapor production.

I'm not up on the specifics of your battery, but you'd generally either need a lower ohm (pulling more amperage) within your battery's safety constraints or pumping out more wattage at the same ohm to see a doubling of vapor.

I'm not sure it'd be the same vapor production - I'd have to play with it to be sure, but I'd imagine it would just lengthen the heat up time and maybe give you lower overall temperatures - but having more coil surface area should increase the vapor noticeably. Again, look at the popularity of the dual coil kanger heads - granted they are in a really tight space which will create more dense vapor.

Over all, I wouldn't caution you against it - you can give it a shot as long as you test your coil on an ohm reader (either dedicated or a decent quality multimeter) before trying to fire it..

 

[drunkenbatman]

I'm not sure it'd be the same vapor production - I'd have to play with it to be sure, but I'd imagine it would just lengthen the heat up time and maybe give you lower overall temperatures - but having more coil surface area should increase the vapor noticeably.

Good point! Changed to "...won't be doubling your vapor production." which is what it should have been in the first place. There are types of coils where you'd not see much change, but some you would.