Attack of the (Kayfun v4) Clones!

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Light Seeker

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I received my S kits from VapeTekUSA today and dropped one in the Black Tobeco. Built a .5 ohm dual coil and man does it vape really nice.

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I wanna try this ..... Shoot for maybe a .8 or so.
Do I really need the S kit? I'm not too concerned about the increased airflow...seems like my v4s are plenty airy.... But more the increased heat & insulator. Think I'll melt the stock delrin?
 

snow blind

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7/16"ID x 9/16"OD x 1/16" is just a fuzz too big (1/16" is slightly greater than 1.5 mm)
3/8"ID x 1/2"OD x 1/6 is close because it gets stretched but is on the small side..
I didn't see any metric o-rings at home depot. Some folks had good success with thread and dental floss, I used Teflon pipe tape early on, a bit of a pain to put on but it worked good.

Ah i forgot about the floss trick... and Teflon tape is another great idea to hold me over until i order some proper rings. Thanks! I'll report back on what i tried and if it worked.

I wanna try this ..... Shoot for maybe a .8 or so.
Do I really need the S kit? I'm not too concerned about the increased airflow...seems like my v4s are plenty airy.... But more the increased heat & insulator. Think I'll melt the stock delrin?

I cant see this working with the stock airflow personally... it wold be too hot. Even with the S kit a dual .5 seems way overkill for the V4... i cant imagine the tiny juice holes and all to keep up.
 

KTMRider

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Don't get panicky, just replace 16 with a 12 x 1.5 mm.
What you what to see when eyeballing it is the o-ring is sitting proud in the groove on the corners just about the same where it's straight. On a lot of them the o-ring about disappears on the corners resulting in the leakage you got.
I lube all my o-rings with juice except that one, I use Vaseline sparingly on it

I'm having the same issue with my black Tobeco. My silver one is still working perfectly with no changes from new. I swapped (16) on the black one and it still leaks. I'll probably try a 12.1mm x 1.6mm shaved down. I put 12 x 1.5mm on my FT and FC and they're working perfectly.
 

dwcraig1

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I'm having the same issue with my black Tobeco. My silver one is still working perfectly with no changes from new. I swapped (16) on the black one and it still leaks. I'll probably try a 12.1mm x 1.6mm shaved down. I put 12 x 1.5mm on my FT and FC and they're working perfectly.

So what size is on the black Tobeco? I found it interesting that mine had a 12 x 1.5 mm for #16 but the Tobeco spares bag (purchased)has 11 x 1.5 mm for #16
I have 4 of them with 12 x 1.5's not leaking anymore so far.
Nah, I still have a 12.5 mm on the Tobeco, works good but kind of tight, I'll change it back to 12, it never did leak with the 12, just wanted to try the fit of 12.5 one.
 
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Apulo

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I cant see this working with the stock airflow personally... it wold be too hot. Even with the S kit a dual .5 seems way overkill for the V4... i cant imagine the tiny juice holes and all to keep up.

With the S kit I have run two full tanks through it and the dual .5 is giving a warm (not hot), thick vape, with tons of flavor that keeps up just fine. I have built the K4 every which way from Sunday and this is by far my favorite build on it so far. I'm working on getting my preferred DNA40 device so until I get one and can work with TP, this is going to be my go-to build.

I have built a K4 with a .9 build and while I didn't melt the insulator, the airflow just wasn't enough.
 

snow blind

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With the S kit I have run two full tanks through it and the dual .5 is giving a warm (not hot), thick vape, with tons of flavor that keeps up just fine. I have built the K4 every which way from Sunday and this is by far my favorite build on it so far. I'm working on getting my preferred DNA40 device so until I get one and can work with TP, this is going to be my go-to build.

I have built a K4 with a .9 build and while I didn't melt the insulator, the airflow just wasn't enough.

Interesting... very good to know! Boggles the mind how it can feed juice that fast with such minuscule feed pathways. I can't even get a 1ohm single above 20 watts on mine... and i've got my coiling/wicking down to a micron measured science on it lol. I'll have to experiment some more this weekend after i sort my leaky #16 o-ring.
 

Monotremata

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With the S kit I have run two full tanks through it and the dual .5 is giving a warm (not hot), thick vape, with tons of flavor that keeps up just fine. I have built the K4 every which way from Sunday and this is by far my favorite build on it so far. I'm working on getting my preferred DNA40 device so until I get one and can work with TP, this is going to be my go-to build.

I have built a K4 with a .9 build and while I didn't melt the insulator, the airflow just wasn't enough.
Yeah my first build was a single .9 and it was a bit harsh. Back to 1.4-1.6 for me!
 

Light Seeker

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I'll have to experiment some more this weekend after i sort my leaky #16 o-ring.
U probably already tried this .... but ensure screw #9 is nice & tight. I replaced #16 ring for the fix on one of my leakers, but find I need to tighten #9 with each re-wick, some reason keeps coming loose.
 

k2zs

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Whelp... after a week with my Tobeco V4 i'm getting leaking inside the bottom deck making a slurping sound and causing an air restriction.

O-ring 16 seems to fit nicely but juice is getting in there somehow... it could be through the air hole... some flooding that seeps down.. no idea.

Any suggestions from other Tobeco V4 owners? Vapes amazing... but now after a handful of hits i get this leaking and air obstruction.

I had that issue too when I was running a 2.4mm I.D. coil. To keep the cotton right in the coil, it seemed to be under wicking in the juice well allowing the juice to flood the center post.

I've since switched to a 3.0mm I.D. coil which allows enough cotton to fill the juice well preventing that excess liquid up by the air hole. The cotton is cut so that it just sits on the juice channels and pasted in place with juice before screwing down the inner chimney (B25).

Since then, I've had no liquid in the base and it's wicking perfectly. No more dry hits, no more flooding.
 

jchisholm

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My coloured glass sections came in :) now my 3 KF V4's are colour coded :D I even have a black one for when my Black Infinite KF V4 shows up.
FT has bin jerking me around on it for 2 weeks now :( there saying it will ship tomorrow but I'v heard that before :(
What is the consensus on the best way to eliminate the spring? I plan on using the Black KF V4 on a DNA 40 with TC :)
BTW the mods are FT enclosure with authentic DNA 30's
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Hey Steamer greets from Nova Scotia..
Get a few of these for your KF4 if you want to use them with a nickel build on a DNA 40.
What a difference, the resistance is ROCK SOLID at .13 ohm with 10 turns 28AWG nickel
Can't recommend them enough!!

Kayfun V4 "Spring Update" - By Steam Tuners - SteamTuners P.C.
 

snow blind

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U probably already tried this .... but ensure screw #9 is nice & tight. I replaced #16 ring for the fix on one of my leakers, but find I need to tighten #9 with each re-wick, some reason keeps coming loose.

Yeah i figured that out on my first tear down... leaked when i just finger tightened it lol. I've been snugging the crap out of it with a big flat head driver... def not moving now! But thanks for the warning!


I had that issue too when I was running a 2.4mm I.D. coil. To keep the cotton right in the coil, it seemed to be under wicking in the juice well allowing the juice to flood the center post.

I've since switched to a 3.0mm I.D. coil which allows enough cotton to fill the juice well preventing that excess liquid up by the air hole. The cotton is cut so that it just sits on the juice channels and pasted in place with juice before screwing down the inner chimney (B25).

Since then, I've had no liquid in the base and it's wicking perfectly. No more dry hits, no more flooding.

I also use 3mm coil... 28 gauge... wrapped as a tension coil then pulled and spaced with about .5mm between each wrap.... wicked thick and fluffy with KGD down to a science with 21mm's of wick that float .5-1mm above the juice deck. Wicks unbelievably good... damn near perfect. I love my 3-3.5mm macro spaced coils. It's funny that after a solid year and a half of micros the trend is moving back to macro spaced coils lol.

Def a seal issue and not wicking it looks like. Will thread/floss wrap the o-ring tonight and order some 12x1.5s. Thanks for the good suggestions!
 

jchisholm

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Has anyone ordered or received the spring update from steamtuners? I ordered it back on the 6th. Looking forward to see if it stabilizes the current. I'm using the fastech A version. Been pretty happy with it after changing out the orings. Although I know the current is fluctuating with the crappy spring.

Yes and they make an amazing difference.
Absolutely rock solid with a nickel build. I bought 4 of 'em and I'm gonna order more.
 

Ph0t0man

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MattB101

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Good thought, I may try that. I use cheapo yard gloves to get the "stuck" bits apart when they are being stubborn.

TsikPNC.jpg

Can you pick up a dime with those? Old reference to a TV commercial.

Sent with no malice and not a whole lot of forethought from my new Galaxy Tab 4. Thanks Santa!
 

MattB101

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Just got my updated EHPro base in today. It does come apart. So all is soaking now. My seller also included two extra springs. They appear to be a little beefier than the stock spring. Even included a pre-paid padded mailer to send them back my old base. This seller has gone way out of their way to make this right even though none of this was of their doing. Hopefully this will be the thing that gets this bad boy working as it should.

If you don't mind me asking, where did you get it? Sounds like someplace I might want to do business with.

Edit: Nevermind, I would of seen it if I'd just read ahead a little!

Sent with no malice and not a whole lot of forethought from my new Galaxy Tab 4. Thanks Santa!
 
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MattB101

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Waiting on some replacement glass .... same thing, not supplying tracking numbers anymore, & I also didn't see where there was an option when I purchased it.
Would imagine 95% of their customer service calls are concerning product shipments/tracking .... guess they now see this as a profitable 'value-add'. :facepalm:

I don't think I want to deal with somebody who lists the vaping gear under "home & garden". Really doesn't give one a warm fuzzy feeling that they know what they're talking about.

Sent with no malice and not a whole lot of forethought from my new Galaxy Tab 4. Thanks Santa!
 

Fernand

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I don't want to insult anybody, but when I hear of dry hits I wonder if everyone is familiar with this trick for getting more liquid to the wick. I don't think it should be necessary under normal operation, but when it's needed, it's needed, at the slightest hint of a dry hit, before the wick gets burned. Like after rebuilding the deck, after refilling, etc. Just hold the V4 with fingertips on the 4 air holes on A5 and gently suck (on D41 ;-). Watch for air bubbles and stop when they appear. Check operation and repeat if necessary.

If after leaving home base you find that your new build is blocking the fluid holes too much -- and crippling your style, before you can touch down and perform full maintenance, you can just keep fingers positioned to block 1, 2 or 3 holes while vaping, to suction enough additional liquid to get through the mission.
 

Viluxia

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Well pictures should show something wrong with my builds i would think, so here we are, this is just one of the many that work for 12 hits or so then dry hit city, requiring hard pulls or blocking air holes and even unscrewing the drip tip adapter to get air bubbles.

2mm micro 28awg, 1.3ohm, with KDG this one is a thinned tailed version, which is roughly 22mm from end to end but everything has the same effect :(

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