I'm nervous about dual coiling on my kayfun 3.1

[sahsah]

I've been told by several staffers at my local vape shop, the Vape spot (fun fact:it was the first Vape shop in the entire country) that a dual coil build in a kayfin or russian will melt the delrin insulators connected to the base of the build-posts. What do you guys think? Any insight into this would be greatly appreciated. The reason I'm hesitant to just believe the people that told me this is because I've seen countless dual coil and even quad coil builds on kayfuns and Russians, so what's the deal? Thank you and Vape on! =].

 

[K_Tech]

Single or dual-coil, what matters is the total resistance of the build. A dual-coil setup with two 2.8 ohm coils (1.4 ohm resistance) will pull the same current as a 1.4 ohm single coil.

Current creates heat, the more current, the more heat produced.

I don't know what the maximum "safe" current for a KF is, but I believe that as long as you don't try to go crazy sub-ohm, I think you'll be fine.

I just recently started playing with my KF (clone) and haven't thought of going dual-coil - yet.

 

[sahsah]

Single or dual-coil, what matters is the total resistance of the build. A dual-coil setup with two 2.8 ohm coils (1.4 ohm resistance) will pull the same current as a 1.4 ohm single coil.

Current creates heat, the more current, the more heat produced.

I don't know what the maximum "safe" current for a KF is, but I believe that as long as you don't try to go crazy sub-ohm, I think you'll be fine.

I just recently started playing with my KF (clone) and haven't thought of going dual-coil - yet.

true, but if you have one coil burning at let's say 300 degrees Fahrenheit (I'm just pulling a random number I know that's not right) compared to two coils burning at 300 degrees, since they are going to cover more surface area, despite having the same temperature each, being that there are two wouldn't that create a higher propensity towards melting susceptible components in immediate proximity...?

 

[antonioslz]

I use the original KF 0.8 ohms mechanic

 

[DigitalVI]

Would dual coils over one air hole be an advantage?

 

[Asbestos4004]

Is there an advantage to running duals in a kayfun? Kinda. It vapes much warmer and it tastes a little different...not better or worse...just a little different. I haven't had any problems with the insulators. My build came to .7 ohms.

I only did it to try it and because I like tinkering. I wouldn't say it's any better than a good standard 1.2 ohm micro with cotton. I'll probably do it again but it doesn't get any more attention than my other Kayfuns. It was fun , though.

 

[K_Tech]

true, but if you have one coil burning at let's say 300 degrees Fahrenheit (I'm just pulling a random number I know that's not right) compared to two coils burning at 300 degrees, since they are going to cover more surface area, despite having the same temperature each, being that there are two wouldn't that create a higher propensity towards melting susceptible components in immediate proximity...?

Yes and no. The melting point of Delrin is around 350°F. Now, that Delrin is sitting under a small block of stainless steel, surrounded by stainless steel, wick, and e-liquid, in a system that while in use is constantly getting a flow of air AND losing heat through the vaporization of e-liquid.

I think that if you pulled the wick and dried out the atomizer, the held down the fire button long enough (assuming the coil wouldn't burn out) you could absolutely heat the delrin up hot enough to melt it (assuming that your coil didn't burn up first).

In a working atomizer my gut feeling is that the Delrin insulator would never even get close to its melting point. It would be a different story if it were in direct contact with the coil itself, but it's not.

Add to that the "proof" that there are a several people running duals on a Kayfun without issue, and I wouldn't sweat it.

 

[sahsah]

Is there an advantage to running duals in a kayfun? Kinda. It vapes much warmer and it tastes a little different...not better or worse...just a little different. I haven't had any problems with the insulators. My build came to .7 ohms.
View attachment 296687View attachment 296688View attachment 296689View attachment 296690
I only did it to try it and because I like tinkering. I wouldn't say it's any better than a good standard 1.2 ohm micro with cotton. I'll probably do it again but it doesn't get any more attention than my other Kayfuns. It was fun , though.

ok, but at the end of the day which would you prefer to take with you on to a desert island, the single micro coil or the dual?

 

[Thomasis]

ok, but at the end of the day which would you prefer to take with you on to a desert island, the single micro coil or the dual?

I would choose the single coil, unless there was a power plant on the desert island to recharge my batteries.

 

[Asbestos4004]

ok, but at the end of the day which would you prefer to take with you on to a desert island, the single micro coil or the dual?

I'd say the single...but I say that while sitting in a hotel room trying to decide whether or not to put duals in the other kayfun that I brought. I'd be happy with any Kayfun on a deserted island...but the dual coil is really growing on me.

 

[rurwin]

You can boil water in a leaf over a fire. Try that without the water and the leaf would be history. No matter how many coils you have, if they are working efficiently they are not much hotter than the boiling point of the eliquid. The thermal conduction from coil to terminals is going to be very low even if the coils are glowing, and the terminals are again cooled by the liquid.

It might be possible to force enough power in to melt the delrin, if you tried very hard and had a massive power supply, but it would be a terrible vape.

A simple dual coil stands no chance.

 

[Raydogg523]

I have been building dual coil on my kayfun for at least a month now with no problems at all....

 

[Raydogg523]

@ Asbestos4004
Very clean build... much props!!

 

[mrfollis]

I sub ohm kayfun lite 3.1 to .4 it gets hot quickly but several factors apply to cooling it, as previously posted, the air sucked in, and the liquid vaporizing, much like sweating evaporative(SP) cooling, also convective cooling through the attached post into the unit and the surrounding air, I've sub to .2 on an k101 with a dual coil and promptly cough on fire, blew it out with no problems since i'm using silica wick stuff, juiced it and had the worst throat hit in history, then drilled the holes out to size several tries, eventually got massive clouds and mountains of taste as nic. The down side is I can't taste regular atomizers,cartomizer, clearomizers, etc I would recommend not getting into rebuilds and if so, definitely not into the sub ohm range, it's just too dam much, not to mention the cost if your vaping something like five pawns. (costly)

I'm sure that would melt it, so their is a point, but I would guess unless your getting into sub ohms and possibly sharing it with multiple people you should get adiquite nic fix before melting point. As all things their are exceptions and of course it applies, here. My humple and ignorant guess. Thank you for reading.

 

[rurwin]

^^^ .2 ohm, 3.7V, 18.5A, 68.4W
I'm not surprised it got warm.