Help! Temp control has gone crazy!

[OhTheAgony]

Friday, I tried cutting my juice 50/50 with VG, but I barely noticed any change in flavor until today, with the 6 wrap twisted coil. It's making a lot more vapor though, enough that my wife complained I had fogged up the kitchen (I hadn't realized), so maybe with the increased vapor I can better taste the difference.

My tank was a Taifun GT II, but I just got a Kayfun 5 in tonight (it's been like a vaping Christmas these past few days, lol), and it's vaping wonderfully. I've changed no settings, and I'm still using the 6 wrap twisted coil build. Same juice. Ito too early to say, but I'm suspecting my RTA may be at fault. It needs a deep clean I think.

Ah cool, the K5 saves the day again, haha.

I hope your problems are gone now.

Some tanks just don't work very well for TC, it may not be fixable at all. I was using a Bachelor Nano as my daily driver for months that had something weird going on as well. For months I believed that it was normal that the resistance wandered sometimes on my cheaper mods, it wasn't until I got my first DNA when I finally figured out that there was something wrong with that topper instead of my mods, lol.

 

[Eskie]

Friday, I tried cutting my juice 50/50 with VG, but I barely noticed any change in flavor until today, with the 6 wrap twisted coil. It's making a lot more vapor though, enough that my wife complained I had fogged up the kitchen (I hadn't realized), so maybe with the increased vapor I can better taste the difference.

My tank was a Taifun GT II, but I just got a Kayfun 5 in tonight (it's been like a vaping Christmas these past few days, lol), and it's vaping wonderfully. I've changed no settings, and I'm still using the 6 wrap twisted coil build. Same juice. Ito too early to say, but I'm suspecting my RTA may be at fault. It needs a deep clean I think.

That's progress. Glad you were able to keep a bunch of variables the same to have a successful comparison. Sounds like a deep clean might be in order, but as OhTheAgony pointed out, not every tank works well for TC. I have a Squape that's a great vape with excellent flavor, but is notorious for bouncing resistance around. That makes it extremely difficult to rely on TC in use, so it's a straight wattage only tank for me.

 

[MikeB]

Ah cool, the K5 saves the day again, haha.

I hope your problems are gone now.

Some tanks just don't work very well for TC, it may not be fixable at all. I was using a Bachelor Nano as my daily driver for months that had something weird going on as well. For months I believed that it was normal that the resistance wandered sometimes on my cheaper mods, it wasn't until I got my first DNA when I finally figured out that there was something wrong with that topper instead of my mods, lol.

Haha, yes this Kayfun 5 is awesome. It's soooo easy to build and wick. Really the wicking is an absolute no brainer. The airflow is great too. It handles this 6 wrap twisted coil with no problems.

 

[MikeB]

That's progress. Glad you were able to keep a bunch of variables the same to have a successful comparison. Sounds like a deep clean might be in order, but as OhTheAgony pointed out, not every tank works well for TC. I have a Squape that's a great vape with excellent flavor, but is notorious for bouncing resistance around. That makes it extremely difficult to rely on TC in use, so it's a straight wattage only tank for me.

Yes, you may be right. There are a lot of inherent connections on the Taifun, for instance a spring loaded 510 screw that's caused issues on other devices in the past because screwing down the tank can unintentionally adjust that screw. The RTA may be at fault for all of this.

I was impressed with how the Kayfun's connections were few and tight. Nothing in the connections has room to float or move. It's very solid.

 

[MikeB]

Would it be safe to say that 50% or more of temp control issues lie in the connections?

 

[mackman]

Yes IMO

 

[OhTheAgony]

Haha, yes this Kayfun 5 is awesome. It's soooo easy to build and wick. Really the wicking is an absolute no brainer. The airflow is great too. It handles this 6 wrap twisted coil with no problems.

I'm glad you like it. After I got my first I've replaced all my tanks with K5 clones, it's all I use now.

Would it be safe to say that 50% or more of temp control issues lie in the connections?

I would guess as high as 85% even.

 

[OhTheAgony]

ps: that clean tasting VG (they also make PG and a 50/50 VG/PG mix) I mentioned the other day is from the brand "Revolute".

 

[MikeB]

ps: that clean tasting VG (they also make PG and a 50/50 VG/PG mix) I mentioned the other day is from the brand "Revolute".

Thanks!

 

[MikeB]

That's progress. Glad you were able to keep a bunch of variables the same to have a successful comparison. Sounds like a deep clean might be in order, but as OhTheAgony pointed out, not every tank works well for TC. I have a Squape that's a great vape with excellent flavor, but is notorious for bouncing resistance around. That makes it extremely difficult to rely on TC in use, so it's a straight wattage only tank for me.

So, more problems...

I put a new coil on last night, but I changed no variables in the coil, wick, settings, juice, tank, tight connections etc. It was vaping nuclear hot. It read my "cold ohms" as 0.513 ohms. It was pushing max wattage (25 watts) the entire time and never getting to 470f, reading instead about 330f. I let it sit forever thinking it would correct the ohms, but in the end it didn't so I just set it to 280f which felt about right, and I adjusted the max wattage to 18 watts / 25 watts preheat, just so it can't push more than I know this coil needs. It was vaping great at 280f, consistent and warm, though I knew the temp had to be wrong.

I pick it up this morning, and it's not making vapor at all. I notice it's reading my cold ohms now as 0.47 ohms. I adjust it up and land at 460f to feel about right. I'm thinking, "ah ha, it just hadn't dialed in the correct ohms".

It vapes most of the morning consistently until about 11:30, when it starts feeling too hot again. I look at the ohms, and it's reading my cold ohms at 0.5 ohms. Now I've got it adjusted down to 380f, which again feels about right.

My only guess is I have a loose connection, but I know without a doubt that I secured both the screws hard and tight, and trimmed the tails flush. I've become neurotic coiling and wicking now, like like playing a game of operation.

What's the deal? In less than 24 hours I've been vaping from 280f all the way to 460f, and I don't believe any of those Temps are correct. I must have a bad connection, but where? I've triple checked everything. Yesterday I was at 470f pretty solid all day. I'm used to a variable voltage device, where I set a voltage and forget it. I'm honestly considering running in wattage mode if I can't get this figured out and behaving consistently.

Is it my wire? SS316L? I have some SS430 I could try again. Is it a connection? Or is this just what vaping with temp control is like?

 

[KenD]

Clearly your atty doesn't work reliably in tc.

Sent from my M7_PLUS using Tapatalk

 

[MikeB]

Sometimes a picture is worth 1000 words...

I can't see where anything is touching, if it is. I don't have a Philips handy, so I can't verify the screws are tight, but they were tight last night, and still look snug.

PicsPlay_1475084039027

• MikeB
• Sep 28, 2016

PicsPlay_1475084070355

• MikeB
• Sep 28, 2016

Also, incidentally after accessing the deck to take pics, I'm back to 0.49 ohms / 460f. So... clearly a connection is loose?

 

[MikeB]

Clearly your atty doesn't work reliably in tc.

Sent from my M7_PLUS using Tapatalk

I'm using an authentic Kayfun5, new out of the box just two days ago....

 

[KenD]

I'm using an authentic Kayfun5, new out of the box just two days ago....

Ok, so it's not the same atty as before. Are you sure that all the parts in the base are tightly and securely screwed together, and that the posts hold the coil leads properly? Check the atty analyser. Does the resistance fluctuate when you touch the coil, wiggle it slightly?

Sent from my M7_PLUS using Tapatalk

 

[Dubminer]

Sometimes a picture is worth 1000 words...

I can't see where anything is touching, if it is. I don't have a Philips handy, so I can't verify the screws are tight, but they were tight last night, and still look snug.

PicsPlay_1475084039027

• MikeB
• Sep 28, 2016

PicsPlay_1475084070355

• MikeB
• Sep 28, 2016

Also, incidentally after accessing the deck to take pics, I'm back to 0.49 ohms / 460f. So... clearly a connection is loose?

Looking at the pictures it looks like the wire is trapped at the side of the screw and not completely under it.This will make it appear to be tight but really it won't be holding it correctly.There are longer screws in the spares
bag if the wire is too thick to get under the screws.You can also use the deck legs to trap it without going through the screw.

 

[MikeB]

Ok, so it's not the same atty as before. Are you sure that all the parts in the base are tightly and securely screwed together, and that the posts hold the coil leads properly? Check the atty analyser. Does the resistance fluctuate when you touch the coil, wiggle it slightly?

Sent from my M7_PLUS using Tapatalk

I didn't check the base. I'll check that tonight. The posts look good to me, but I'm not sure of anything now.

I'll test the coil in the analyzer. I checked it after the build and it seemed stable, but I think think to mess with it. I'll try wiggling it, twisting the screw posts, etc tonight.

Good ideas!

 

[MikeB]

Looking at the pictures it looks like the wire is trapped at the side of the screw and not completely under it.This will make it appear to be tight but really it won't be holding it correctly.There are longer screws in the spares
bag if the wire is too thick to get under the screws.You can also use the deck legs to trap it without going through the screw.

That could be I suppose. It's so small it's hard to tell. Maybe I over tightened it and it's pushing the wire out? I've had that happen before but not often.

Good tip on the longer screws! I assumed what was in the bag was identical spares, but these screws are hard to work with without them coming out.

I can't figure out how to make use of the deck legs. I've tired going around them on the outside, but the wire doesn't seem to stay put. Ive had more luck going on the inside and just wrapping the screw. Maybe I need to look at a Kayfun5 build guide or something.

 

[Dubminer]

Be careful with the longer screws. They are only meant for thick wire, if they screw right down with thinner wire they can wreck the deck.

 

[MikeB]

Be careful with the longer screws. They are only meant for thick wire, if they screw right down with thinner wire they can wreck the deck.

Oh? I assumed there would be a stop of some kind. Didn't realize they could go all the way through.

 

[OhTheAgony]

Sorry to read you're having problems again. No, TC should not be this hard, I'm afraid you're just a bit unlucky

Not sure if this will solve it for you, but a few things come to mind;

It looks like you have your coil-legs wrapped around the screw, it's possible that they touch the housing that way. I always trap them underneath the screw on one side of the post and cut them off as short as possible. Do you have a wire-cutter with a flat cutting side? I use 2 strands of 28g and have no need for the longer screws by the the way, twisted 26 might be a different story.

Your coil also looks a little warped to be honest, are you sure there are no hotspots anywhere..? This is usually the case ime when the resistance some times drops but then goes back up to the old value again, especially after messing with it a little bit.

Another thing you can check is if your number 6 is tight:

If you remove screw number one from your 510 connection the base-plate can be pulled out from the underside and you'll see a little nut (number 6 in metric if I remember correctly). It should be tight but not overtightened or your insulator (number 12) could break.

Good luck and keep us posted!