Re-building experience ( coil build issues )

[nitewalkr]

Greetings fellow cloud chasers and e-cig forum members;

First of all, i complement with respect to those who took their time to help others, to start up with e-cigs. Not only that, you have further on made tutorials of different types and levels of coil builds and reviews upon different RDAs and RTAs that helped us out in our transition. Thank you for helping me start up and especially this forum that has helped me do my research before i started vaping.

That being said, allow me to share my experience that i had yesterday. According to my last post in ( "do you save your coil?",) got me an idea to burn my previously made micro coil for 10 sec and wash it under cold water which will make it as good as new. The cleaning part did work (partially) and it was good until i "rewick n primed" it and took a first hit, which drove me in to a constant coughing followed by a metallic taste. It wasn't until later on i realized that i had been getting the dry hits. ( washed up old micro coil with extended wicks. ) 7 rings for micro coil, rounding up to 0.7 ohms, recommended 3.7v.

I had to redo my build the second time but it lead to the same end, constant cough after hit followed by a metallic taste. ( new micro coil with extended wicks close to the deck. ) 8 rings for micro coil, rounding up to 0.7 ohms, recommended 3.7v.

The third time i wrapped another coil. It worked the flavor was there but it was unable to produce the amount of a cloud it used to, also it is sucking up a lot of juice. ( Not a micro coil but the rings were closer to each other with extended wicks up words and then were stuffed in to the barrel yet ensuring that it isnt blocking the holes.) 6 rings non micro coil, rounding up to 0.6 ohms recommended 3.4v.

So tl;dr version; current build, fails to produce an excessive amount of vapor and sucks half a tank in approximately 2 hrs. I would appreciate if anyone would help me out with this. Working with lemo 2 RTA and istick 50w battery. Currently 30% pg / 70% vg e-juice, battery running on 20w.

Thank you.

With kind regards
Nitewalkr

 

[Cullin Kin]

iStick 40W? I'm not sure there is such a thing. There is a 30W and 50W...

Regardless, the trickiest part about the Lemo line is the wicking. So, I would guess it is not the coil, but the wick.

Just in case, before you wick, do you make sure your coil glows evenly? It starts glowing in the middle then spreads bilaterally to the ends? No dark spots while everything else is glowing? Hot spots will most certainly cause dry hits.

If everything is okay with your coil... It's definitely your wicking methods. Tell me how you go about wicking your Lemo 2.

 

[nitewalkr]

Ya sorry about that Eleaf iStick 50w

All three of them were glowing from the middle spreading outwards. ( even the one that i attempted to re use. )

The first wicking method was where the ends were touching the deck.

The second wicking method was where the ends were near the deck but not touching the deck.

The third wicking method ( currently being used; ) was where you place an extended wick equivalent to the size of the chamber that goes on top of the deck. You pull them upwards and cut them by the measurement of the chamber. Then they are combed upwards using any pointy object to spread the wicks out and then you stuff the combed ends in to the chamber making sure the holes have space. If that makes any sense.

With all these of course it goes without saying that you prime the wicks.

 

[Rsunderl]

Wicking is tricky at first, but you get the hang of it fairly quick. If using cotton, you want enough cotton so that it always touches and "hugs" the inside of the coil. If there is too much, you will "choke" the fibers and the juice will not get to the middle of the coil. too little and juice will get there, but not enough juice to keep the coil saturated.

The way to get the right amount is to have enough that ,when you are pulling it through the coil, it's a slightly tight fit and there is some resistance. Depending on the thickness of the wire used, your coil might move slightly, but it shouldn't be so tight that it deforms the coil while pulling the cotton through.

Hope it helps and Happy Vaping!

 

[Ou2mame]

I use a 3mm screwdriver to wrap my coil on. I do 6 wraps of 26g, for 0.5 ohm. I used to do 8 wraps of 28g on a 2.5mm screw driver for 1.2 ohm.

For the cotton I use organic Japanese cotton, peal it into 3 pieces. I cut roughly 4mm for the 2.5 and 8mm wide cotton for the 3mm diameter coil. I roll it in my fingers and twist the end and bring it through. I cut the cotton so that it doesn't touch the deck. Barely doesn't touch. Like half a mm from the deck.

Then I wet the cotton with juice. I put the chimney on and use a pair of tweezers to push the cotton into the deck away from the juice hole on the bottom so that it's open. Then reassemble the rest.

You want the cotton snug in the coil, not easily pulling through and not moving the coil either. Kind of in between.

 

[nitewalkr]

To be honest that's what i do sir Ou2name. The problem comes after when i cut the wick before it touches the deck. I do use 3-3.5mm to roll the coil. But this isnt working out for me. I am still experimenting even though I requested help here after failing at it three times. Also i dont even know what wire came with the Eleaf Lemo 2

Allow me to specify; The wicking method that you suggested was what i attempted the second time and that didn't work for me.

 

[Ou2mame]

26g comes with the lemo. You might want to check the top oring and check out the glass orings too.

 

[nitewalkr]

Glass oring came off on my third cleaning phase ( assuming you are talking about the rubber rings that allow the tank to be air tight.) That isnt the issue since i placed it outside the deck right beside the holes

I had to rebuild my coil and rewick it leaving more then enough space for the juice to flow since its 70% vg

This was my last build it was working amazingly except later on when it started showing me different ohm reading every time i take a hit.

 

[Ou2mame]

You probably have a lose screw on one of the coils and when it heats up it expands so the ohm changed cause it's contact isn't constant.

 

[Cacique]

I don't have a lemo, but I sub ohm at high wattage and wrap 3 to 3.5mm coils. When I wick, I do it so the cotton is snug in the coil, but still be shifted back and forth pretty easily, which I do a couple of times after it's through. I then cut my wicks enough to touch the deck, sometimes a bit more depending on my RDA. The first thing that I noticed is that your wick is too short to reach the juice channels. You could try trimming the wicks so they reach the juice channel. I use japanese organic cotton, so preparing it is different than regular cotton balls but works similarly. I found this link here, don't know if you've seen it but hope it helps The Lemo RTA: A Build With Pics | E-Cigarette Forum

Good luck!

 

[nitewalkr]

I am not certain if i can do the 12 wraps with of micro coil on lemo 2 with extended wicks expecially for thicker juices, but I'll see what i can do that is relevant.

I also think it wasn't 26g that came with lemo 2. It was probably 24g because when i thread the wick through it, it would shift. (Non micro coil.)