Kayfun 3.1 Setup questions, airflow, looking for the perfect vape.

[RugerRob]

Okay fairly new to the kayfun world and mech mods. Picked up a Hcigar Nemesis and and Hcigar Kayfun 3.1 Plus with airflow adj.

Being a fisherman with excellent knot tying techniques mastering the coil build was a non issue, they always turn out nice. I have tried the Ehpro and Tobeco clones and the air draw on both where too tight and there was not enough adjustment range for my liking. I picked up the Hcigar Kayfun 3.1 plus clone and it's amazing, the airflow is huge on this thing and turning the screw in you can adjust it to a tight draw if that's your preference. Ease of use, top filling, draw, nice threads and hassle free use on the Hcigar are top notch and I sold the Ehpro and Tobeco which in my opinion sucked.

The kayfuns go through 2x the juice compared to my Kanger Aero Tanks but the vaper density, warmth, and flavor is amazing. I have one built at 1.4 ohm and the other built at 1.7 ohms.

I found on the 1.4 ohm I was getting dry hits. If I left the unit sitting with out vaping it for awhile and took a long drag off it I would get it. If I was vaping on it consistently it seemed to run fine then out of the blue another dry it.

Took it apart, replaced the cotton, tried again, checked cotton, channels, etc same results. None of this happening on the other one built at 1.7.

I tightened the airflow adjustment screw and it appears to be working perfectly now. So my question or thoughts, when building the coil lower it appears to be more sensitive to getting dry hits or burning the wick. Is there a relation to the airflow draw, too loose a draw just pulls too much air and dry's the wick or perhaps does not create enough of a vacuum draw in the tank to pull juice up the channels to the wick?

Running a higher coil 1.7-2.0 perhaps less prone to being dry hitting?

All opinions and thoughts appreciated.

 

[Choc_Addic]

I'm no expert but though about trying vertical coil?

It could help since the coil would have more wicking all around it instead of just in the middle of the kanthal?

A few things you may want to indicate tho..kanthal ga, coil diameter, number of wraps and pg/vg ratio.

Cheers

 

[Harleybarbie]

I took the AFC screw out of my Tobeco Russian Clone it is hitting great now. No leaking, no whistle, no awful burnt taste. Finally another tank working great and big ole clouds!


Sent from my iThingy using Tapatalk

 

[HughDaHand]

You seem to be on the right track here. Increasing the airflow will decrease the vacuum in the coil chamber causing it to draw less juice from the tank. This holds true for pretty much every vacuum fed tank such as kayfuns and protanks. It can also be effected by the strength at which you suck through the tank, a harder inhale causing more vacuum feeding more juice (a big cause of the "gurgling protank" threads around here). Also the higher ohm coil will run cooler vaporizing less juice, drying out the wick slower allowing a slower feeding tank to keep up.

 

[anumber1]

You seem to be on the right track here. Increasing the airflow will decrease the vacuum in the coil chamber causing it to draw less juice from the tank. This holds true for pretty much every vacuum fed tank such as kayfuns and protanks. It can also be effected by the strength at which you suck through the tank, a harder inhale causing more vacuum feeding more juice (a big cause of the "gurgling protank" threads around here). Also the higher ohm coil will run cooler vaporizing less juice, drying out the wick slower allowing a slower feeding tank to keep up.

Exactly!

Negative air pressure is needed in the chamber to allow juice to reach the wicks.

Too little draw results in no juice flow into the chamber and dry hits.

 

[bFolk]

My Kayfun has always been a little finicky. Even when I (thought) I wicked it perfectly, I would get the beginnings of a dry hit every once in a while.

Usually, re-wicking does the trick for me. Putting on the chimney, and then using liquid to really smash the wicks to the side of the deck. I usually hold the unit sideways up to a light, so I can make sure I can see there's a gap between the channel and the wick. usually, it ends up working out.

 

[tuxracer]

your answer is probably already posted, but the only thing that no one has asked is what thickness of juice are you running? ive switched from 50pg/50vg to 20/80 and i have some issues with wicking in my kayfuns from time to time i normally just unscrew the top cap a turn or so and let an air bubble pull into the tank to even out the vacuum a bit and it works without gurgling every time

edit: wanted to add im running that 20/80 in them at ~1 ohm on my mechs its strange that your having troubles running an hcigar at 1.4

 

[RogerWilco357]

I just prime the kayfun by tapping on the air hole while inhaling and you can see the little bubbles as liquid enters the chamber . But you have to make sure you don't over do it or it will flood and go into the reservoir tank below which you have to clean every so often . I love the 3.1 it is my favorite to date. I bought the EhPro and it worked flawlessly no dry hits no leaks just awesomeness to the point where I had to get the original 3.1 and lite versions matched with the Provari and Lava tube just all day vapes with no issues . When I smoked a carton of cigs it was like burning money nothing left but ashes . Now over the course of a year I have tried a lot of ecigs till i found this combo. But the point is I smoked and money turned to ashes..Now i have come down from 24mg to 12mg and now moving to 6mg. soon I will be done with nicotine and maybe vaping. And instead of ashes to show for it I will have 2 Provari and many kayfun to re-sell and get most of the cash back just awesome . Hope your journey turns out as well as mine...good luck and enjoy those Kayfuns...
Roger Cast

 

[RugerRob]

I'm back to happy vaping, I think I was getting too light on the cotton wick along with the airhole being too open. Rebuilt both tanks last night, new coils at 1.4 and 1.5 ohme 9-10 wraps with 28 Ga Kanthal wire. Rolled the cotton a big denser than before (but not too much) after putting everything back together again no more issues. Part of the Kayfun learning curve... The Hcigar kayfun's are so easy to work with, really like them and the vape densitity and flavor is just amazing.

Oh I run 60/40 or 70/30 juice most the time, I stay away from anything that looks thick, darker colors tend to be thicker and higher VG thicker as well (0 Nicotene). The less hassles I get from a Mod/Tank the happier I am...

You just have to find that perfect combination that works for ya.

I think I want a panzer clone and a hades clone next.

 

[RugerRob]

I'm no expert but though about trying vertical coil?

It could help since the coil would have more wicking all around it instead of just in the middle of the kanthal?

A few things you may want to indicate tho..kanthal ga, coil diameter, number of wraps and pg/vg ratio.

Cheers

I've thought about doing a vertical coil, but being a newbit to the rebuildable world I'm sticking with horizontal for now... My issues are more I think to wick and airflow I think I have it ironed out.

 

[CassiusCloud]

I made a vertical coil..it's defiantly about getting the wicking and airflow right..
It's easy to pooch the wick.
because the wick holds so much at first that it makes you think everything is fine,then bam! choked out by dry hit..

 

[autobiogphnation]

But you have to make sure you don't over do it or it will flood and go into the reservoir tank below which you have to clean every so often .

Do you wait until the tank is empty to clean the bottom juice reservoir or can this be done at anytime?

 

[tj99959]

With my 3.1, I have the air flow screw removed, 1.3 ohm micro coil wrapped on silica wicks, and the Kick-2 set at 11 watts. (3.78v)

 

[coalyard]

I have said before, it's kind of hard to believe how little cotton you need to properly wick a Kayfun, probably due to the fact that the build deck looks positively enormous in most pictures! Really, just a small wisp is good, not compressed, and just enough to pull through the coil with very slight resistance. Clip the ends so the just reach the bottom of the lower deck if you mount your coil perpendicular, or to the width of the base if you mount diagonally as I do. It takes a little trial and error. I run my coils at 1.8 ohm, so feeding is never an issue. The lower you go, the more finicky it becomes. Good luck!