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nttdemented

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Well taking a cue from Dusty's 32awg dual wire twist build I did dual twisted 30awg micro coil over mesh wick build this morning. Came out at 1.1ohms and kicking but! The only difference from my previous mesh build is that I did this one with 2mm inner diameter, it came out at 2.5mm outer diameter with 10 wraps of the twisted 30awg.

cwrv.jpg


The only problem I'm getting is that it doesn't seam to wick fast enough for this power level it seems. I have to take pretty hard draws while chain vaping, if not I get that metallic taste caused by the mesh wick drying up slightly. But if I take hard draws the flavor is perfect and its really chucking out the clouds. What should I try? Less contton density, a wrap or two more to lower the power, or a smaller diameter build?
 
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Dusty_D

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What's the reason for having the mesh in there? I'm not seeing any benefit other than adding to the possibility of introducing hotspots against the twisted wire.

As for the build itself, I see only 7 wraps of coil against the mesh. As for the wicking itself, I would say that you have just a bit too much cotton in there because it seems to be clumping up where it exits the mesh tube.

Gotta ask again. Why the mesh? Try the build without the mesh tube, and you should be just fine.
 

nttdemented

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What's the reason for having the mesh in there? I'm not seeing any benefit other than adding to the possibility of introducing hotspots against the twisted wire.

As for the build itself, I see only 7 wraps of coil against the mesh. As for the wicking itself, I would say that you have just a bit too much cotton in there because it seems to be clumping up where it exits the mesh tube.

Gotta ask again. Why the mesh? Try the build without the mesh tube, and you should be just fine.

You're right its 7 wraps. Still 1.1ohms as described, my bad. I like the flavor of mesh for most of my juices. It tastes cleaner to my taste buds. I also like this style of build because maintenance is easy as pie. Re-wickiking the cotton tails is a lot easier to me than rewicking through the coil itself. I've gotten pretty good at doing this build and I'm not getting ANY hotspots whatsoever. Another benefit is that without cotton tails I can use this build to drip test my juices by saturating the mesh without cotton tails. Lasts about 2 or 3 good draws before it dries up then a few pulsed dry burns and I can try another juice without any flavor creep.

My favorite build on the KFL has been this same build but with 4 standard wraps of the 30awg around the mesh at 2mm outer diamter, decided to try this to see the difference between running with 4 standard wraps vs a micro coil over the mesh and I'm the the micro coil is consuming the juice to fast from the mesh. I'm having to let it sit for a while to let it soak back up or do hard draws to help the cotton push more juice towards the coil. The vape itself when it works is working awesome, just need to figure out how to make the mesh wick keep up so I'm debating what to try before I take it apart again, if I need to rebuild it with more wraps over a smaller diameter, if the cotton is the issue or if its the power of 1.1ohms. Not really sure at this point.

EDIT: Just noticed something on your comment. That is not a mesh tube. Its a mesh stick. Its rolled solid without holes on the end. The cotton is just wrapped around the tips of the mesh and layed over the decks. I posted this build on page 350 of this thread.

EDIT2: Sorry meant page 350.
 
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Lord Vaako

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Hey guys, got another question, well more of an issue. I've had this happen with both cotton and silica - burnt juice. My first build was a .8ohm micro coil using 30g and silica. My next few builds had a larger diameter (all with 30g) and were 2-2.2 ohms. I vaped the .8 coil at 3.8v and have been vaping the 2ohm coils at 4v. I never let my cotton go longer than 2 days and I will have burnt juice on the second day. The silica is supposed to last longer and I still had burnt juice over the same time frame. The juice doesn't taste badly burnt, but it's definitely not as great. You really see it visibly though. The color is a lot darker. Any ideas?
 

Dusty_D

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Hey guys, got another question, well more of an issue. I've had this happen with both cotton and silica - burnt juice. My first build was a .8ohm micro coil using 30g and silica. My next few builds had a larger diameter (all with 30g) and were 2-2.2 ohms. I vaped the .8 coil at 3.8v and have been vaping the 2ohm coils at 4v. I never let my cotton go longer than 2 days and I will have burnt juice on the second day. The silica is supposed to last longer and I still had burnt juice over the same time frame. The juice doesn't taste badly burnt, but it's definitely not as great. You really see it visibly though. The color is a lot darker. Any ideas?


What juice are you vaping LV? I vape NET's (Naturally Extracted Tobacco) and they have a tendency to go really dark after a day or two of usage. The juice does not taste burnt, but if you looked at the coil, you would recoil in horror! :)

You're vaping at 8 watts equivalent and that should not be burning your juices, unless you are having wicking issues still.

Can you take a picture of one of your coils, before you change it? It would help to identify where the problem lies.
 

nttdemented

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Well I decided to try the easiest thing to do. I twisted the mesh wick out and put a straight piece of cotton. Besides the flavor difference between mesh and cotton its working perfectly now. I might have to revisit my mesh build with 28awg when I finally order some.

*goes to rtdvapor.com to check if its back in stock*
 

Lord Vaako

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What juice are you vaping LV? I vape NET's (Naturally Extracted Tobacco) and they have a tendency to go really dark after a day or two of usage. The juice does not taste burnt, but if you looked at the coil, you would recoil in horror! :)

You're vaping at 8 watts equivalent and that should not be burning your juices, unless you are having wicking issues still.

Can you take a picture of one of your coils, before you change it? It would help to identify where the problem lies.

Ah, ok. So you're having a similar experience. I'm vaping Rawr Caramel 50/50 24mg. I was thinking that the flavor drop off was just a because the cotton was no longer new and wears out faster than the silica. It's not really tasting burnt, but there's a hint of it there by day 2. The juice is definitely a lot darker now. I'm getting my wick wet without any issues there now. I can tell the difference from before when I wrapped my coil too tight. You can also see little bubbles rising from time to time letting you know that juice is in fact flowing and the vapor production is still very strong.

Since I was getting such great vapor on my last rebuild, I decided last night to refill. I left my syringe and supplies at home so I can't drain it at the office to take a picture. The juice did get considerably darker after only 6 hours though following the refill compared to about a day and a half after the original fill. This was happening with my Zap as well.
 

turbocad6

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man I really like my kayfun, it's reliable and aside from the fact that some builds tend to run a little on the dry side needing a lil primer pull here and there it's just a great pocket mod, and I really like it on my svoemesto semovar, as perfect of a match as it can get and really works well but it is just so very looong. I tried it with an 18350 tube and with that it's size becomes very manageable but battery life just sucks as an 18350 mod.

I really really like svoemesto's sticker, the base thing that allows you to use the battery along side the head making it a side by side and making it closer to half the length but these things are just impossible to find. I even sent an email to svoemesto about buying one but never got a response, and I've searched high and low to no avail. anyone have any idea where to buy something like this?? I want one so bad that I'm even considering building one myself now from a few spare parts I have from the svoe stuff, a little leary about welding up my svoemesto stuff but man just can't deal with the whole light saber look of this thing any more, it looks like a mini bat or a weapon or something, great vape but way too long and dildoey :)
 

rouxdoo

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I really really like svoemesto's sticker, the base thing that allows you to use the battery along side the head making it a side by side and making it closer to half the length but these things are just impossible to find. I even sent an email to svoemesto about buying one but never got a response, and I've searched high and low to no avail. anyone have any idea where to buy something like this?? I want one so bad that I'm even considering building one myself now from a few spare parts I have from the svoe stuff, a little leary about welding up my svoemesto stuff but man just can't deal with the whole light saber look of this thing any more, it looks like a mini bat or a weapon or something, great vape but way too long and dildoey :)

http://shop.svoemesto.ru/index.php?productID=1119

In stock now at SM's online shop. I got one and like the feel of it with an 18650 tube, but it's got a really bad design at the collector spring assembly. It has an inconsistent point of resistance that causes E5 errors for me. I can measure resistance with my meter at the positive post that fluctuates depending on spring compression. I'm tempted to smear the whole mess with noalox to see if that helps.
 

turbocad6

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wow, last time I tried at there site they didn't even have usa on the dropdown menu's and I couldn't order it, that's why I sent them an email and they never replied. wow that sucks about the connection issues, the nivel chip is so sensitive that it detects a less than perfect connection and gives errors easily. I would def say clean the connections up and use nolox. if there smooth connections then don't scratch them up, polish them clean with a pencil eraser and put a lil nolox to keep them from oxidizing.

I decided to build my own base for this, and now hearing your contact issues maybe it's not so bad that I do build my own :) I used an end cut from a spare 18500 tube and a spare tank collector, welded them both to a stainless steel base. I decided to go a little more squared off for my base. I have another dual tube mod like this with a rounded base and it tips over pretty easily, I wanted mine to not tip over easy. how is yours? does it knock over easy or is it very stable standing on a table?

I'll put up a pic of the one I made tonight in a bit, didn't come out so bad I think :)
 

turbocad6

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well, here's my version :)


went from this







to this







I still need to polish the base, might round off the sharp edges a bit, it's not 100% finished but it works. it looks burnt from the welding. I welded the 2 connections and then used a brass bar and brass screws for the contacts. it works really good but I think I just toasted my wick :(

not the best welds but they'll hold :D this is all 316L stainless steel










still need to make a lower cap :) but right now gonna rewick wit some hemp and see what that's like :D
 
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