Vcore - vertical micro coil in oddy/kayfun/Russian/Ithaca/ect.

[JeremyR]

This cloth like viva towels are working good. It really saturates the coil to the max like you would think it would be on the verge of flooding but it holds it completely. Here's a pic from my last rewick. Strip of the towel, and the wick of rayon I use.

.

Just got a new vv mod - sig v3 tele w/ tobec oddy

 

[sectopod]

nice topic, some specific tips for kayfun vertical microcoil ? I found only 1 video around

thanks

 

[JeremyR]

Hey sectopod, thanks for stopping in. Take what you can from here and put it together in the kayfun to make it work. Let us know how it goes for you. Please post you experiences with photos if you can. We can help you troubleshoot it, it's very similar to the Russian posted here. Just make sure your wick material isn't too tight on the coil.

 

[sectopod]

ok thanks
how much cotton should I put on the base deck ? and it should be all from the same stripe that I putted around the coil or I can take random pieces of cotton and put it around ?

thanks

 

[JeremyR]

I always say less is more. I like to use separate pieces. A light wrap around the coil, wet it down so it stays wrapped. This provides even contact with coil. Then the wicking just needs to be touching that basically to wick to the core wrap. If you taste cotton or have muted flavor your too tight on the coil. You can use a needle to loosen it a bit. Or just make sure you have a needle by the coil when you wrap it this will help from over tightening the wrap on the coil. Use enough cotton so that it doesn't leak and provides you enough reserve juice for chain vaping. I would say if your using cotton now about the same amount your using to wick a standard but split it around the coil. There's different ways to do it whatever works for you. When you get it right you will know right away!! Just give your cotton a 10 min soak time before you fire it up. ( if your going sub ohm you may want a lot more cotton packed around.)

 

[sectopod]

thanks jeremy will try.

Now i was using kanthal 0.25, today I ordered kantal 0.30 mm that should be better

 

[JeremyR]

Yeah heavier gauge is better. So what I'm talking on your wicking, outside of the core wrap which should be pretty thin, the amount you used before so it wasn't flooding or over wicking is about how much you should start with for wicking from the channels/deck to the coil. Bu you can see dice uses more. It depends on how much power your able to push to it.

 

[sectopod]

my first try on kayfun 3.1. Used cotton on kantal 0.25 , ohm 1.8

I did good ? screw size was 1mm

 

[dice57]

^That might work, the strand size looks about right. If the heavy wrap around the coil doesn't produce flooding, then it's all good. I had to much on one build which caused the whole chamber to get flooded. Also, to much cotton can retain the heat more, making for heating issues of the atomizer.

 

[sectopod]

I. Changed the cotton wick it does a lot of rumour like little fireworks, what i did wrong?

Thanks

 

[JeremyR]

Sounds like its too wet, either getting too much juice from the tank or too much cotton around the coil. I never make mine tight on the coil either. Use a needle and run it around the coil between the cotton to give the cotton some room to expand.

 

[JeremyR]

Gonna post a couple shots of my last two builds on the oddy clone. FYI I only have 32g kanthal.

This is a dual wire 32g coil @ about 2.5 ohms around 25 wraps total. I was playing with hemp fiber on this build and never got it to my liking plus I think it took too long to heat up for me. With less wraps it would be better. Plus taking the resistance wire into the channels is not good. Its a lot better to take the no res into the cup.

This is NOT a good way to run the legs on an oddy !

 

[JeremyR]

Deviating a little from my standard 32g 8 wrap that has been working great. Pulled out an old twisted 32 gauge I had, twisted with a drill. This build is better for me this time. Tried the hemp fiber for a day in it and still don't have the hemp down. Went back to my Kleenex viva core and rayon wicking flavor is spot on and working perfectly.

I still think a coil the same height as the upper channel like the first post works a little better even at 3 ohms. It probably has to do with the higher amount of wraps on this twisted coil.

This is twisted 32, 1/16 ID, 11/12 wrap @ 2.2 ohms

It's better if you size it and form the legs out of the cup, with needle nose pliers, for a uniform bend without damaging the micro coil.

 

[JeremyR]

View attachment 276225

my first try on kayfun 3.1. Used cotton on kantal 0.25 , ohm 1.8

I did good ? screw size was 1mm

Secto looking closer at your pic it looks like way too much cotton around the coil. Try to use about 1/3 or less of what you have there.

.25 (30g)should be fine I'm using .20 kanthal (32g)

How many wraps were you at? 1mm is too small you need to be at about 1.6mm . Good luck!

 

[DrMA]

Here's a new build with Mundy's Magic wire on the Kayfun 3.1 all wrapped in hemp fiber.


I've been building hollow coils for almost a year, mostly as "birdhouse" setups with ceramic wicks. Here's a couple examples.

 

[dice57]

Kewl deal Dr. I just finished a new build on my Aqua using a 20 gauge blunt tip needle for my wrapping mold. 12 wraps for each coil, 28 awg kanthal, vertically mounted in the Aqua for a .52 ohm build. Having a great vape!!

I still have lots of 28 Kanthal, so haven't been tempted with the twisty wisty timey whimey Doctor Who builds yet. but loving what I am getting with what I have.

 

[ronpaek100]

Did a dual vertical build on the Terminator-C today. Calling it the Snake in the grass. Used 28awg Kanthal, doing two separate coils on the same wire each with 6 wraps each. Measured 1.4 ohms vapping at 15.36 watts. This was my first attempt at this build, using Jeremy's idea of the cotton core wrap but around two coils vertical mounted. It is hitting really well, up to the Russians performance. Just need to play with my cotton densities and the non resistant wire connection. But quite pleased with the initial results. I've also drilled to 2 air holes on the stem out to 1/16", so that I could get better air draw through the Term-C. Glad I did, much better draw for my taste when vapping at 15 watts.

I used one rolled stand of cotton, and snaked it between the coils S style. so the cotton wick goes around on side of the coil and between the 2 coils, then around the other side of the coil.

I'm leaving the ground wire a little bit long after wicking the coil, and tuck it into the O-nut once tight. This way I can easily re-wick the term.-C by lifting the coils to the side, slide in the new twisted wick between the 2 coils, pull the ground wire down into the track, twisting and placing the cotton wick into the tracks and then screwing down the O-nut then install the ceramic housing into the base. Kind of like popping the hood. lol.

I have the juice control wide open, as far as it will go, with no leaks or gurgling. Just a nice good vape. At first I had it only a partial twist open, then had to open it more so that it could wick more at the high wattage, finally opened it fully, been like that for an hour with no issues.

what happens if you don't raise the coils at all from the deck? even less no TH? or does it not vape as well

 

[sahsah]

The following is the photo's of the build I used on the Rocket rba, kayfun clone, cheap clone. lmao. I used 28awg Kanthal, 12 wraps around the tip of a blunt nose needle tip from a juice bottle, build at 1.1 ohms. When fired at ~15 watts, I get awesome results. I tried to show the cotton amounts and lengths. Getting it just right is a matter of trial and error. I have the Russian and 2 Rockets set up with this build and all 3 perform flawlessly. Great wicking, can chain vape a whole tank with no dry hits. I can use the same wick for 5 days without need of fresh cotton. I also have started to clean out the wicking channels with a Q-tip and some rubbing alcohol, to insure my heavy VG juice does not clog them, when I change out the cotton.

Have found that the legs of the cotton need to be just touching the end of the juice deck so when you put on the containment ring it screws on nice and easy, with no need to stuff the cotton up and in. Again, this is a matter of trial and error, to much cotton in the juice deck and it can flood or block the juice channels. But now I can re-wick these rba's and get tank after tank of great vape consistently.

Also, height of the coil above the air intake is critical. To high and you'll get a nasty throat hit, almost as bad as a dry hit. I have mine about 1/2 the hieght of the mounting screw from the air intake. This came to my attention after a new build on the Russian, was working great but seemed to lean towards dry hits, so when I went to try a new wick wrap, noticed how high the coil was, so I simply put my needle back through the coil, so that I could align it, and pushed the coil closer to the air intake. Pulsed the coil to reset the new position, re-wick and working like a charm.

Hey Jeremy, How about M.E.W. for this build? Micro External Wicking. The kitty connection. lmao.

can you please go into more detail about how you are setting up the wick? That seems to be where I'm messing up, thank you.

 

[dice57]

what happens if you don't raise the coils at all from the deck? even less no TH? or does it not vape as well

For a single vertical you can actually have the bottom of the coil resting on top of the air intake, and it vapes great. Raising it just increases throat hit and then flooding can be an issue.

can you please go into more detail about how you are setting up the wick? That seems to be where I'm messing up, thank you.

I twist up the wick fairly tight, so that it passes through the loop with some resistance, then wrap it totally around the coil with each wick tail ending up in the juice decks. When I screw the containment ring on, I fold the wick tails up so as not to catch in the threads, then tuck the tails into the juice decks after the ring is tight.

I pretty much use a dual series vertical coils now. Vapes the best for me and much more forgiving on the wick densities. I thread the wick between the two coils then completely wrap both tails around the coils, with the tails ending in the same side juice deck that they started from, taking care to cover the entire coil surface without covering the end holes of the coils. Also folding up the tails while screwing on the containment ring. Think most wicking issues occur when the wick gets caught it the threads and block the juice channels.

 

[ronpaek100]

For a single vertical you can actually have the bottom of the coil resting on top of the air intake, and it vapes great. Raising it just increases throat hit and then flooding can be an issue.



I twist up the wick fairly tight, so that it passes through the loop with some resistance, then wrap it totally around the coil with each wick tail ending up in the juice decks. When I screw the containment ring on, I fold the wick tails up so as not to catch in the threads, then tuck the tails into the juice decks after the ring is tight.

I pretty much use a dual series vertical coils now. Vapes the best for me and much more forgiving on the wick densities. I thread the wick between the two coils then completely wrap both tails around the coils, with the tails ending in the same side juice deck that they started from, taking care to cover the entire coil surface without covering the end holes of the coils. Also folding up the tails while screwing on the containment ring. Think most wicking issues occur when the wick gets caught it the threads and block the juice channels.

I don't know why i'm getting more TH from the vertical coil build than with a standard horizontal micro coil I do my wraps with a 16g blunt tip needle i do 10 wraps on 28g kanthal comes out to around 1.1 ohms and i've been having the coils be flat with the deck unraised, do you pack the chimney with cotton and make it carto style?