Dual sub ohm micro coil concern

[KLS12]

I have built a dual sub ohm micro coil on a trident three post RDA using 28 gauge Kanthal, seven wraps per coil, with cotton wicks. The set up reads .5 ohms on my evic and obviously won't work on it. However, on my sigelei #19 brass mod with a protected AW 18500 battery, 1500mAh, it is BY FAR, the best vaping set up I have ever built. Plumes of vapor!

I should note that I built the two coils out of one continuos piece of wire as the center positive post is slotted and allowed me to drop the wire in from between the two coils.

Despite the fantastic vape, with all of the battery safety warnings out there, it kinda scares me. Should I be concerned about this set up?

Thanks for any advise.

 

[_sidekick_]

What is the contiuous discharge rating for the battery? And how many amps is your setup pushing? That will give you your answer.

 

[KLS12]

The battery has a 1C rating. At least that's what I believe from the battery label. (hoping it's not an "I" C)

Question - how do you figure out the amps the set up is pushing?

Thanks again

 

[KLS12]

Here are the specs for my battery....
Specifications
Size 18500 = 150A
Dimensions 18.45 x 51.33mm ( +/- 0.05mm )
Normal Voltage 3.7V
Capacity 1500mAH ( rated at 0.2C discharge 4.2V - 2.5V @ 25℃ )
Operating Temp Charge 0 to 45℃ / Discharge -20 to 60 ℃

 

[9ball_AJ]

That dual coil is pulling up to a maximum of 8.4 amps from the battery. If the battery is rated at 1C: 1500mah x 1C = 1.5 Amps continuous discharge. If it's 0.2C as stated in the post above it is rated for much lower. The AW IMR 18490 is an 8C battery at 1100mah, therefore is rated at 8.8 amps continuous discharge.

 

[retired1]

Moved to Rebuildable Atomizer Systems.

 

[KLS12]

I was too concerned with the dual micro coils at 7 wraps each being only .5 ohms, so I took it apart and built this 12 wrap each dual micro coil which comes in at .7 ohms. I was really expecting more resistance going from 7 to 12 wraps each.

 

[Technonut]

http://www.e-cigarette-forum.com/fo...-discussion-safety-battery-info-warnings.html

 

[KLS12]

http://www.e-cigarette-forum.com/fo...-discussion-safety-battery-info-warnings.html

Thank you very much. After reading as well as watching the video from "Lordy" I placed my order for the Panasonic CGR18650CH batteries immediately!

 

[dr g]

That dual coil is pulling up to a maximum of 8.4 amps from the battery. If the battery is rated at 1C: 1500mah x 1C = 1.5 Amps continuous discharge. If it's 0.2C as stated in the post above it is rated for much lower. The AW IMR 18490 is an 8C battery at 1100mah, therefore is rated at 8.8 amps continuous discharge.

The AW 18490 is actually a 15C battery. But yeah the rest is true, that battery is not good for .5 ohm use, stop using it immediately OP.

 

[9ball_AJ]

The AW 18490 is actually a 15C battery. But yeah the rest is true, that battery is not good for .5 ohm use, stop using it immediately OP.

Good to know, I was going off the specs listed on the Wonderlite Thread

 

[Jaseruckus]

I tried dual micro coils with cotton several times and I just didn't like it as much as a normal dual coil build. It would perform good at first but after a day it starts tasting awful to me. Every time I changed out the cotton, it would be burnt. I don't think cotton is suited for the amount of heat that dual coil sub-ohms produce. Maybe I should needle some folded silica through the micro coils, but for now I'm enjoying my dual coils with just plain silica 28awg kanthal 4/5 wraps. I still enjoy micro coils with my KFL but it seems like my sweet spot for micro coils are from 1.1 and up.

I remember when micro coils were being praised for being able to achieve the same warm vapor and flavor you would get from sub-ohms with a mech mod but using higher ohms with a vv/vw mod. Kind of confused why all the sudden need to sub-ohm micro coils when just regular sub-ohm set ups already achieve the warm vapor, flavor, and TH.

 

[gankoji]

I tried dual micro coils with cotton several times and I just didn't like it as much as a normal dual coil build. It would perform good at first but after a day it starts tasting awful to me. Every time I changed out the cotton, it would be burnt. I don't think cotton is suited for the amount of heat that dual coil sub-ohms produce. Maybe I should needle some folded silica through the micro coils, but for now I'm enjoying my dual coils with just plain silica 28awg kanthal 4/5 wraps. I still enjoy micro coils with my KFL but it seems like my sweet spot for micro coils are from 1.1 and up.

I remember when micro coils were being praised for being able to achieve the same warm vapor and flavor you would get from sub-ohms with a mech mod but using higher ohms with a vv/vw mod. Kind of confused why all the sudden need to sub-ohm micro coils when just regular sub-ohm set ups already achieve the warm vapor, flavor, and TH.

@Jaseruckus: What you say here is true, micros do give off plenty of VTF, usually comparable with much lower resistance coils of the 'normal' variety. But I've run dual micros in a dripper before, just to give it a shot, and found it to be one of my favorite vapes. When I did, though, I wrapped each coil at roughly 1.2-1.3 using 28ga Kanthal, which was roughly 12 turns each. Overall resistance was ~.65 ohm. Normally I wrap my single micros at ~1.0.

I found that getting that much wire in contact with the wick and drawing that much power led to an incredibly satisfying vape, and the clouds were seriously thick. Also, with that much wire, I never had a problem with scorching the cotton, since the heat was well distributed.

Just my two cents .