more airflow for kayfun lite plus

[FatherTime]

i was going to try drilling a bigger hole in my kayfun lite plus until i realized the hole doesnt go straight though. it curve around then up sorta like a hockey stick. so how do i get more airflow to this atomizer? the airflow screw is all the way out and its still not enough

 

[crxess]

Might want to strip your kayfun and do some testing. The air holes are Straight. They are Bored, not cast.

Caution when drilling. Go slow and apply minimal pressure. Stainless is extremely hard.

You MUST remove the center pin and Air adjust screw while drilling.

 

[JoeDerty]

here you go we made a video showing exactly how to do it! You will love it when you get done! How To Drill The Air Hole On a Kayfun!!! - YouTube

 

[crxess]

here you go we made a video showing exactly how to do it! You will love it when you get done! How To Drill The Air Hole On a Kayfun!!! - YouTube

Good Video covering steps.
Additional info for alignment of air hole.
After snugging Center pin - place suitable bit, paper clip, Syringe needle into Air hole.
Turn clock/counter clock slightly to align Holes. Guide will Drop into second opening when aligned

 

[FatherTime]

when i vape all the juice inside im going to take it apart and check out that video if the airhole goes straight through. thanks people, ill keep you updated

 

[BuzzKilla]

your airflow is limited by the inside diameter of that hollow center pin... and no, that cannot be drilled out.
If you think drilling out the side hole will make any difference, you will just be wasting your time.

If you are looking for easy drags and lung hits, the Kayfun is the wrong tank to use.
trying to increase airflow in a kayfun, will reduce its ability to feed the coil. Therefore making it useless.

You want heavy clouds and lung hits, get an AQUA... at least you can drill that out.

 

[ronpaek100]

There is a thread on calivapor and people have said drilling out the airhole on the side actually does make a difference and that it didn't effect the juice flow at all.

 

[BuzzKilla]

the side air-hole can only go as large as the hole going through the centre pin.

If you try to drill it any larger, you are just wasting your time.
As the airflow is bottle-necked at the centre pin.

As the OP seems very new to the forums, i thought i would share that info.


Doesn't matter how open you make a kayfun, it is still a relatively tight draw compared to other tanks/attys.
It is better to let the OP know the results and alternatives, than to butcher a Kayfun that they may not be happy with.

ronpaek100, the term "loose draw" is subjective. and we cant say that all juices will wick properly in a Kayfun.
Just because you read it on the internet, doesnt make it true

I personally only speak from experience, so take if for what it is.

 

[HazMatt]

You might be able to notice a slight increase in airflow by drilling out the side hole on Kayfun style atties. But, I agree with BuzzKilla. The airflow is ultimately restricted by the center pin. You cannot expect airflow equivalent to a 1/4 inch when, the center pin's opening is smaller than that.

This is the same for Protanks/Aerotanks or whatever clearo tank someone is using. The airflow has to travel through the small hole in the bottom of the positive pin. This restricts the airflow to the size of that small hole.

 

[SkvLTD]

I personally just carefully drilled right in to make the outer most and slightly past the AFC screw areas bigger. Since you can't really do anything about the center pin, and that's the limiting factor aside from the outer-most opening. Took care of most of the whistle for me. Now, I'm not sure whether mine is true SS or not, but the shavings were a mix of shiny metal and dark gray (R91 kinda finish). Blew it all out and used a thin drill bit + cotton to swab everything up.

 

[steel bender]

your airflow is limited by the inside diameter of that hollow center pin... and no, that cannot be drilled out.
If you think drilling out the side hole will make any difference, you will just be wasting your time.

If you are looking for easy drags and lung hits, the Kayfun is the wrong tank to use.
trying to increase airflow in a kayfun, will reduce its ability to feed the coil. Therefore making it useless.

You want heavy clouds and lung hits, get an AQUA... at least you can drill that out.

I drilled out my side air hole to 3/32 and center pin to 5/64. It made a HUGE difference. I would not suggest drilling the pin to 5/64 like I did however, wouldn't go past 1/16th to be safe. I drilled out one to 5/64 and it's fine, so I tried drilling out a second pin and it cracked when I tried screwing it into the positive block.

When I finally got a replacement pin, I haven't drilled it out at all, but the side air hole is still at 3/32 and even with the stock pin hole, it can be nice and airy, with the air adjustment open.

I've heard it before that we're limited by the hole in the pin and it makes sense, but for whatever reason, in my experience, drilling the side air hole bigger than the pin still makes a very noticeable difference.

 

[crxess]

The only limitation is the Vertical opening in the Center pin.

The Air channel can be drilled to match, or slightly larger to allow less restriction to the Vertical shaft.
The Center pin has 2 open sides and will accommodate more air than a single hole.
So, Vertical bore is the key in maximum air flow.

 

[ronpaek100]

Fat Daddy Vapes should be having some center post pins with a bigger bored out hole for sale soon guys

 

[TheJohnG]

After snugging Center pin - place suitable bit, paper clip, Syringe needle into Air hole.
Turn clock/counter clock slightly to align Holes. Guide will Drop into second opening when aligned
View attachment 324444

This step alone made a huge difference on my Ehpro model.
I have since added the adjusting screw and have useful air control.

 

[mrmoto]

I've heard it before that we're limited by the hole in the pin and it makes sense, but for whatever reason, in my experience, drilling the side air hole bigger than the pin still makes a very noticeable difference.

I'm glad I didn't read this thread before drilling out my Kayfun Lite clone today. It is a huge improvement in my experience as well. It's nice and airy for big cloud lung inhales now - almost as good as my drippers. And no problems coil feed (wicking?). Also, I was worried about more juice leaking from the huge air hole but that has actually improved. I think changing the o-ring at the bottom while I had it in pieces fixed that completely.

I'll report back if problems arise - I'm just only through my first tank full - but really liking the improvement so far. Of course, I think the fact that I was only risking a $14 FT clone helped. Not sure I would have tried it on an expensive collector type doodad.

edit: I should point out I'm not using a Plus - just a Kayfun Lite clone. A KayFun Lite Minus?

 

[scrappy]

Drilling out the side hole helps, but drilling out the center pin made all the difference in the world. I drilled mine out with a 5/64 bit. Don't take the pin out when you use this large of a bit or the opening will flare and you'll have to sand it flat. (if it will even screw back in at all) leaving it screwed in provides support to the sidewalls and keeps it from deforming.