kayfun build for 100% VG vaping

[xyanide]

Hello everyone. I seem to have a little trouble to get 100% VG to wick properly without me priming it constantly by blocking off the airhole. I know I can go through those 800+ pages of various kayfun threads, but I don't like doing that. Besides people can find the answers to this thread in the future easily now.

I've used a few recommended builds from youtube and the forums to no avail.
I can't post a picture of my build currently but I will once I get home. I use the method of sticking my wick to the side of the build blocks once I primed it (bamboo yarn). I do that to make sure I don't block off the channels in any sort of way. Do I just need to adjust my draw to uncomfortable levels? Thanks for the help.

 

[YuckMan]

What diameter is your coil? I find that I can't get 100% VG to wick through a coil less than 2.5mm in diameter no matter how I set the wick. 2.5mm works perfectly for me. It leaves the perfect amount of wick to fill enough of, but not block the liquid channels. If you go bigger than 2.5mm you'll probably have to trim some of the wick to the same length of the coil so it doesn't block them.

 

[xyanide]

I always use one of my fatter precision screwdrivers but mine looks pretty similar. Maybe I trim my wick just a little too much, it looks like you're sitting it pretty high up off the airhole. Do lighter/fruit flavors come out better that way?

 

[YuckMan]

I just go that high because I'm paranoid about shorts in my R91. Usually a bit lower on my genuine KFL+ and EHpro clone. It doesn't seem to make much of a noticeable difference in flavor to me. I've never done any bamboo yarn builds so I don't know how it wicks. Assuming you don't have your channels blocked, you might need to go a bit bigger with the coil. It's really hard to judge the size from the picture. A bigger coil will act as sort of a buffer and allow more time for the wick to bring liquid to the coil.



http://www.e-cigarette-forum.com/forum/rebuildable-atomizer-systems/508564-kayfun-russian-wick-setup-works-great-me.html

There are some pretty good looking builds in this thread. The first build can be used as a reference. Thats a 1.7mm coil and he has to leave a bit more wick so he can fold it along the bottom deck. I'm sure it works just fine for PG mixes, but in my experience it doesn't work well for 100% VG. Most of the builds in the thread you can see that the wick does not cover the liquid channels, but is right next to them.

 

[ankush]

Lighter fruit flavors require less heat to pop FWIW. As for the wicking issue, with 100% VG and cotton less cotton is more. Keep it nice and fluffy rather than packed tight into the coil and over the juice channels. Keep playing with different wick densities until you find a balance between flavor and flooding/gurgling. Keep a syringe handy to pull the juice out between rewicking. It took me 4-5 tries until I figured it out for 100% VG - but it took less than a few hours of vaping and rewicking. It's a trial and error science since no one can specify the density of the cotton. The main thing is to not pack the channels with cotton. Just enough so the juice can wick and feed the coil. The liquid will feed into the vacuum chamber and touch the wick because of positive air pressure when you draw from it.


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[Sweeperdk]

This is a video I did last summer... It's a fairly long video but very detailed. I vape this setup solely with 100% VG, so it should be what you're looking for:

 

[dflores]

I make my micro coils on kayfun with 1.5mm and it wicks fine for me. I do use a tighter draw on kayfuns which could make the difference. I also drip just one drop per ml on my really heavy vg juices to thin them out a little bit. Has worked very well for me.

 

[VaPreis]

I've vaped several tankfuls of Boba's Bounty (100% VG) through one of my kayfun clones with no wicking issues.

I always build them on a coat hanger which measures at 2.2mm and wick with cotton. My cotton fits snuggly, but does not bunch up as it pulls through the coil. There is a fine line.

I mount my coils with the open ends directly facing the juice wells, instead of what seems to be the more common way of mounting them diagonally across the air hole. Mounting diagonally is easier in terms of mounting the coil, but it also makes it necessary to have elbows in your wicks.

Mounting the coil with open ends to the wells = no elbows = better/faster wicking.

 

[vapdivrr]

Hello everyone. I seem to have a little trouble to get 100% VG to wick properly without me priming it constantly by blocking off the airhole. I know I can go through those 800+ pages of various kayfun threads, but I don't like doing that. Besides people can find the answers to this thread in the future easily now.

I've used a few recommended builds from youtube and the forums to no avail.
I can't post a picture of my build currently but I will once I get home. I use the method of sticking my wick to the side of the build blocks once I primed it (bamboo yarn). I do that to make sure I don't block off the channels in any sort of way. Do I just need to adjust my draw to uncomfortable levels? Thanks for the help.

as its been mentioned many times before, the correct amount of cotton is key. I cannot speak for the bamboo wick you are using but if you cannot get that to work, and if you try cotton you need to experiment on the cotton amounts. one thing that you can try is to make the part of the cotton in the coil sort of on the loose part, but not too loose, the rest of the wick can be thicker. you just don't want the part of the wick in the coil to thick. also placement of the tails is important as well.

 

[tw33k]

I've tried everything to get a 1.5mm coil to work with 100% VG but I've given up. I'm going back to a larger size (don't know the size exactly, I wrap it around a small allen wrench that's maybe 2mm) This worked best for me.

 

[YuckMan]

Given that your wicks are properly set up, I think the difference here is the rate that people vape at. If you don't wait long enough between vapes on a smaller coil, you can get a dry hit because smaller coils just wick slower. Just tested a 1/8" coil and I can vape pretty much non stop on it through the whole tank and never get a dry hit. However I don't need this, because I do take breaks between hits. I usually go with a 2.5mm coil.

 

[tw33k]

just built a new coil, i think it's 2mm. I did 8 wraps of 28 gauge kanthal and it came out at 1.5Ω (a little higher than i'd like) but i can chain vape Bobas Bounty at 10watts and it's near perfect.

 

[YuckMan]

This isn't something I would normally do, but I made a video showing just how well the Kayfun will wick 100% VG when properly set up. I could go through an entire tank like this with absolutely no dry hits if I wanted to risk melting my insulators.





I wasn't inhaling much because it's just too much for me, just showing how well it wicks. 1.8 ohm 1/8" coil at 4.2V.

Set up pics are of a 2.5mm coil, just a little smaller, but it's basically the same setup. I needed to trim the wick a bit more with the 1/8" coil so they didn't block the channels. That's pretty much the only difference.




The wick goes all the way to the bottom of the deck by the liquid channels, but not in them.




Make sure you can see the liquid channels, do not block or cover them. This is the brilliance of the Kayfun design. We all know that liquid needs to come in through these channels, but what most people forget is that air needs to go out as well. It's just easier for it if it doesn't have to go through a bunch of wick and liquid to get out, and it will increase wicking if you do not cover them. The only reason for covering them is if you have a high PG liquid and get flooding, even then it's more likely that you have an O-ring issue than an overfeed.

 

[YuckMan]

Micro/Nano coils are great for drippers, but If you want your coil to actually wick from a tank, go bigger.

 

[xyanide]

Thanks you guys so much for all the tips and replies, also great video there. My problem was I needed my coil size a bit bigger. I checled and have a coil just under 2mm in here currently with probably a bit too much wick sitting on the deck. I tested it again today just to be sure and chain-vaping 50/50 is no issue at all just under 2mm. I'll build it nice and fat when I get the VG liquid again.

 

[ronpaek100]

what differences does wrapping the coils with a larger diameter 1.5mm vs 2mm have?

I'm looking for the build with less throat hit and good wicking and great flavor.

I heard that the smaller the coil the better the flavor but i'm not really sure..

 

[YuckMan]

what differences does wrapping the coils with a larger diameter 1.5mm vs 2mm have?

I'm looking for the build with less throat hit and good wicking and great flavor.

I heard that the smaller the coil the better the flavor but i'm not really sure..

In a Kayfun style device a smaller coil does not really help the flavor much imo. You can go smaller, but if you start running in to wicking issues, go bigger. Drippers like the smaller coils because they dry out quickly, you can drip more on it without flooding it and drowning the flavor. That is not a problem in a tank system, a lot of people run into the opposite problem because tanks run a bit more dry naturally.

It's all about finding the balance that works best for you and your liquid. I'm not saying a bigger coil is better for everyone and is the best build. It's more about finding what works best for your taste and your liquid. It just seems that people seem to think that micro/nano coils are the only way to go for a good vape, but they aren't. There are other options.

 

[tw33k]

I could never get a 1.5mm coil to wick consistently in my Russians or HCigar Kayfun clone. Had to keep giving it primer pulls to avoid dry hits. Now I've got a 2mm coil 6 wraps on my Stingray mech and it's absolutely fantastic.

 

[YuckMan]

Thanks you guys so much for all the tips and replies, also great video there. My problem was I needed my coil size a bit bigger. I checled and have a coil just under 2mm in here currently with probably a bit too much wick sitting on the deck. I tested it again today just to be sure and chain-vaping 50/50 is no issue at all just under 2mm. I'll build it nice and fat when I get the VG liquid again.

I could never get a 1.5mm coil to wick consistently in my Russians or HCigar Kayfun clone. Had to keep giving it primer pulls to avoid dry hits. Now I've got a 2mm coil 6 wraps on my Stingray mech and it's absolutely fantastic.

Glad it's working for you guys.

 

[MPZ]

This is a video I did last summer... It's a fairly long video but very detailed. I vape this setup solely with 100% VG, so it should be what you're looking for:

Your videos are really helpful- as someone pretty new to this forum and vaping, I just wanted to say thanks. Frankly this thread is kinda reassuring as have a PG allergy, thus it's 100% VG only for me.