Burning Hot Kayfun v4

[Zabolee]

I picked up a Kayfun v4 clone a few weeks ago. And I love the flavor and airflow. It's relatively easy to build on (though my first RTA was a Sqaupe R, so nothing will be easier for me). I did have some issues with it leaking, but I figured that out, and it was my own stupidity.

Back to the title problem, though. I started building nickel coils for it since they work so well in my Squape. They wick fine, and the flavor is great. I don't do anything fancy, and I have the ohms set between 0.12-0.14. However, recently, the whole tank seems to get hot REALLY FAST. Not warm to the touch. I mean burning hot. In fact, I have been having problems with my Vaporshark DNA40 since this started happening. The mod won't switch out of temp control mode for hours after I remove the Kayfun. I'm starting to think that the heat of the tank did some damage to the wires or circuitry in the mod.

I have my temp set at 480C, and am vaping at 14 watts. Has anyone else seen problems with their Kayfun's overheating? I assume that it is the tank since my Squape R (set up the exact same way) doe snot even get warm. The only other tanks that get as hot are my Nautilus and Atlantis. The Atlantis can actually get too hot to touch sometimes

 

[AmandaD]

I have three Kayfun 4 clones running with nickel - they all behave relatively well (not hot)! Two of them have the S kit installed, but the other doesn't and is still fine.

 

[Zabolee]

I'm not really interested in the S kit since I like where the air flow is at. Does the kit do anything else? I know the insulator is different, but it's not just the bottom of the tank that gets hot. When it starts getting that hot, the whole tank warms up. The only part that stays cool in the top of the tank and the drip tip. The glass gets warm, but it doesn't burn

 

[roxynoodle]

I'm wondering if the spring is giving you problems? Steam Tuners makes a shim that replaces the spring to give a solid tc connection.

 

[Zabolee]

Maybe. The resistance does not fluctuate much at all while vaping. Not like other reviews I've read. But that may work. It'll take a while to get to me in the states, but it sounds like it might help. Since I don't change my temp setting between my nickel builds.
Thanks for the hint

 

[vapo jam]

i'm not really familiar with the v4, but perhaps it would help to do a full strip-down to ensure all of the connections are tight. i had a similar problem with my russian, turned out the inner center screw (the one that holds the build deck and the center pin in place) was loose. the loose connection caused the resistance of the tank itself to skyrocket, so i was essentially firing the tank instead of the coil.

like i said, i'm not too familiar with the v4 so i can't point you to a specific part, i just know that it has lots of different pieces that go into it.

 

[Zabolee]

That may make sense. I'll give that a try.

 

[Boden]

If the whole body is getting hot I would take the whole thing apart to make sure there are no metal shavings or other short circuit paths. You will see tiny dark spots if there is chuff in the gaps.

Also if the spring is discolored at all it may be acting as a heating element.

 

[Zabolee]

I took it apart yesterday, and there is no discoloring. Neither on the body nor the spring. I can't figure what would be causing this. When I can, I'll try the shim from Steam Tuners. But for now, I'll have to shelve this tank

 

[roxynoodle]

I'm guessing all the insulators looked ok? Is that (I think #9) counternut in the base tight?

 

[roxynoodle]

I'm wondering if stretching your spring a little might help as well.

 

[Zabolee]

Insulators looked fine. I don't have a socket wrench that fits the nut, It felt tight as far as I could reach it with my big fingers. But I can't be sure. I have thought about stretching the spring. Haven't tried it yet

 

[Boden]

I wonder what the resistance of the spring is.

Who made the clone?

 

[Boden]

I just measured the spring that comes with the tobeco clone. Did six runs on a calibrated resistance tester. Average was 0.097 ohms

@roxynoodle

 

[roxynoodle]

Interesting. I have a Tobeco also.

 

[Marc411]

I have two Tobeco's and used the Kayfun V4 "Spring Update" - Accessories - SteamTuners P.C. on them and it works great.

 

[Zabolee]

Mine is a Tobeco as well. Marc411, did you have a similar problem that the update fixed, or did you just use the update for the sake of it?

 

[roxynoodle]

Mine is a Tobeco as well. Marc411, did you have a similar problem that the update fixed, or did you just use the update for the sake of it?

He got me mine. For stable tc was why we got them, but I would have to think it would cure any spring problem, tc or not.

 

[Monotremata]

Mine is a Tobeco as well. Marc411, did you have a similar problem that the update fixed, or did you just use the update for the sake of it?

The spring was supposed to keep the resistance from fluctuating, which can sometimes happen with the stock springs. I have three of the Tobecos (all with the original springs still), ran them between 15-18w and have never had any problems with heat (I also only ran them around 1.5ohms too). Since you mentioned your Vaporshark started having issues when this started, its possible its the mods fault. That tank wouldve had to generate A LOT of heat to mess with any soldering inside. Could have a bad DNA chip in it that just went crazy after awhile. Does the Vaporshark get hot at all like the tank does? Do you have a backup mod you can try the Kayfun on?

 

[roxynoodle]

The spring was supposed to keep the resistance from fluctuating, which can sometimes happen with the stock springs. I have three of the Tobecos (all with the original springs still), ran them between 15-18w and have never had any problems with heat (I also only ran them around 1.5ohms too). Since you mentioned your Vaporshark started having issues when this started, its possible its the mods fault. That tank wouldve had to generate A LOT of heat to mess with any soldering inside. Could have a bad DNA chip in it that just went crazy after awhile. Does the Vaporshark get hot at all like the tank does? Do you have a backup mod you can try the Kayfun on?

Ah, I didn't know about the mod. I had a mod that went nuts and was outputting a huge amount of voltage. Even turned down to 7W I couldn't use it, and had to exchange it.

Yes, try your K 4 on another mod first to determine which is the problem. My Tobeco is still wearing its spring without issue since I haven't done a tc build in it.