Hey guys, kind of a coil amateur here but I'm looking to improve my Kayfun build. Currently using 28 gauge wire, usually getting around 1.2 to 1.5 ohm builds, I'd like more vapor and throat hit, should I try 26 gauge wire or use less wraps? It does seem like it takes a moment to heat up, I'm typically used to higher resistance and higher gauge wire but have been slowly venturing into the lower side.
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Definitely Kyi, if your not getting any dry hits while comfortably vaping, then I'd try either less wraps (or a smaller coil diameter), or some 26ga. I'd recommend even 24ga, because that's what I use on my russian 91, because that's not as big a leap from 28 as you'd think.
But definitely before you buy something else, try a smaller diameter. I personally like my russian wrapped 9-11 times (depending on my mood

) on a 1/16th" guide, which comes out to about .7-.9 ohms (with 24ga, with 28 you'd only need about 6 wraps).
It's not extremely low ohms or anything dramatic, but with the smaller diameter the center of the coil heats up faster, which is right over the airflow, so it's perfect for the Kayfuns in my opinion. It's nearly instant vapor production, because there isn't a massive juicy wick "working against" the heat if that makes sense. With wider coils, I think the airflow has a harder time working around the coil and cooling off the top (thus making vapor), so I seem to get dry hits much easier. That and normally the outer coils don't ever get a chance to heat up, with this relatively long coil (because you can get more wraps, while staying lower in the ohms), the airflow stays cooling down the center hot spot, while the outer coils are kinda off to the side, so they get a chance to heat up as well, since they get less airflow. I really think with a skinny, long coil, it's the best way to evenly heat up everything, while making it easier for the kayfun to "squeez out" the juice in the wick, and the wick being thinner, can definitely wick juice alot easier against gravity (like trying to suck a 10 foot straw, as opposed to a 10 foot garden hose if you catch my drift.).
I meant to keep this short and sweet my bad lol, give it a shot though, if your confident in your wicking skills

. It seems to wick better only if your already getting good results with wider coils, if you wick it too dense, it may dry hit easier because there's simply less juice in the smaller coil. But it really does pay off if you wick just enough to have a little resistance when you pull through the coil, and I fluff my wick tails out when done, usually having them touch the juice deck just so.
Hope this helps!

Believe me, if you know your kayfun well, you can build some really hot coils in'er. Alot of people underestimate it, and build 2-3 ohm (slow) coils in them, because they are afraid of the wicking being too slow, but you can catapult some vapor really well. (I'm sure you already know, but just in case, max out your airflow, and build your coils to work for that, you'll get much better performance.