Attack of the (Kayfun v4) Clones!

[TheKiwi]

Peeks in

WELP a couple of folks PMed me to share this build in this thread too so here's it. Chimney build on the k4. 8 wraps around 2mm, 1.1 ohm

Make sure coil is in line with air hole

Leave the bit in while wrapping cotton around it

Add a slip of cotton over the top lead, and let both ends of the cotton to reach the deck

Top view: check to make sure the airflow remains unobstructed after wicking

And this is after 4 tanks. Using a DIY 86% VG. Wicks well, still all wet and saturated. Vaped between 19 and 27 watts.

And I'm out!


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[jhhollier]

Okay. I can't get the juice control ring to budge. At all. I've got the Tobeco version and this is starting to drive me crazy. Everything was a bit tight to get apart initially but this is ridiculous. Anyone else have this problem? Any tips to get it loose?

Edit: FINALLY. My fingers are killing me now but I got the juice control ring moving. Used a the end of a screwdriver in one of the airholes for leverage. Seems to be moving freely now, so time to put a build on it.

 

[Garemlin]

Check to see if you have (2) and (10) installed. Those are what seals your chamber from the 510 pin. (2) on my FT was so tight that couldn't get it out so I left it rather than risk damaging it. It fell out of my FC v4 and I almost lost it. (10) on all 4 are snug but fairly easy to push out.

I know they are in there because I could not get mine to budge either.

 

[Garemlin]

Here is probably what's happening, you have a slight leakage past # 16, it leaks out the 510 screw because it "can". It leaks out slow just like it accumulates so it never get to the level of the air holes hence no gurgling. Here's my work around for that as well as changing #16 (it does wear from opening and closing JC).
I tied this and it fits perfectly, install a 2 x 1 mm o-ring under the head of the 510 screw's head. Don't have one? Do you have one of those key chain screw drivers like some atties come with, there is one 2 x 1 o-ring on each end. This won't stop the leak but it will stop it from leaking into the 510 of your mod.

That my friend is ingenuity at it's best. I never even realized all of those little drives had o-rings. Just put one on my 510 screw.

Oh and mine does actually have gurgling after filling. Posted that a bit ago. It is only random though. Not every time I fill and it clears up after a few pulls. So it is not like it is a constant leak. I guess when I am closing the JC it isn't fulling sealing. I checked the #16 last time I had it apart and it looked fine.

 

[roqe]

I sometimes wonder if I have the only bad tobeco.

No you do not. My Tobeco KFV4 works fine now but it needed some work. My brother got HOTCIG version from FT (SKU: 2078203) 2 days ago and it's freaking beast! no problems whatsoever and lot's of spare parts

 

[dwcraig1]

That my friend is ingenuity at it's best. I never even realized all of those little drives had o-rings. Just put one on my 510 screw.

Oh and mine does actually have gurgling after filling. Posted that a bit ago. It is only random though. Not every time I fill and it clears up after a few pulls. So it is not like it is a constant leak. I guess when I am closing the JC it isn't fulling sealing. I checked the #16 last time I had it apart and it looked fine.

#16 gets quite a bit of wear and tear, needs replaced often (how often ???) I would/do use 12 x 1.5 mm for that one.

 

[Garemlin]

#16 gets quite a bit of wear and tear, needs replaced often (how often ???) I would/do use 12 x 1.5 mm for that one.

I'm guess that one is not included in the bag o' parts that come with the Kv4.

 

[dwcraig1]

I'm guess that one is not included in the bag o' parts that come with the Kv4.

They seem to be supplying 10 x 1.5 mm (oem) and 11 x 1.5 mm (bag) but not 12's
Only my Tobeco came with a 12 x 1.5 mm for #16, the Tobeco parts bags I bought have 11 x 1.5's but no 12's, go figure, outsourced maybe.

 

[KTMRider]

10 x 1.5mm is (18). I just ordered 10, 11 and 12 x 1.5 orings a couple of days ago. I should have them by the end of the week.

 

[ThunderDan]

10 x 1.5mm is (18). I just ordered 10, 11 and 12 x 1.5 orings a couple of days ago. I should have them by the end of the week.

I ordered those sizes too. I stocked up on several of each size o-ring on the parts list, and threw in some 12x1.5 just in case, but haven't needed them yet.

I think an order of o-rings is necessary for long term maintenance on most of these kf4 clones. (Probably authentic too).

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[Nibiru2012]

Okay. I can't get the juice control ring to budge. At all. I've got the Tobeco version and this is starting to drive me crazy. Everything was a bit tight to get apart initially but this is ridiculous. Anyone else have this problem? Any tips to get it loose?

Edit: FINALLY. My fingers are killing me now but I got the juice control ring moving. Used a the end of a screwdriver in one of the airholes for leverage. Seems to be moving freely now, so time to put a build on it.

I had some snugness with the Tobeco clone I bought. There's a screw (part #9) which was a little tight, plus on the air hole/finger ring (part #5) there was very slight burr on the edge mating to the ring with the Svoe Mesto logo (part #26). I gently rotated that on a piece of 800 grit wet/dry sandpaper and that smoothed it all out. Then when reassembling those parts I did not tighten the screw (part #9) too tight, just finger tight with the screwdriver and it now turns very smooth.

I realize that some people don't want to go to that trouble, but it works.
I highly recommend everyone with a clone V4 to take completely apart (excepting O-rings) and clean it thoroughly and to get acquainted with the parts and their assembly.

This is one amazing piece of engineering!

 

[Elyptic]

After having some weeping issues around the tank sections, I replaced all the orings I could get to with ones I ordered. No more weeping! And even better wicking (I'm guessing a better vacuum is being made).

Regardless, it only took about 10 minutes and I think it's a worthy upgrade!


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[ricks]

I had some snugness with the Tobeco clone I bought. There's a screw (part #9) which was a little tight, plus on the air hole/finger ring (part #5) there was very slight burr on the edge mating to the ring with the Svoe Mesto logo (part #26). I gently rotated that on a piece of 800 grit wet/dry sandpaper and that smoothed it all out. Then when reassembling those parts I did not tighten the screw (part #9) too tight, just finger tight with the screwdriver and it now turns very smooth.

I realize that some people don't want to go to that trouble, but it works.
I highly recommend everyone with a clone V4 to take completely apart (excepting O-rings) and clean it thoroughly and to get acquainted with the parts and their assembly.

This is one amazing piece of engineering!

I keep my #9 screws tight on both of mine. Twist on and off smoothly.

 

[KTMRider]

I had some snugness with the Tobeco clone I bought. There's a screw (part #9) which was a little tight, plus on the air hole/finger ring (part #5) there was very slight burr on the edge mating to the ring with the Svoe Mesto logo (part #26). I gently rotated that on a piece of 800 grit wet/dry sandpaper and that smoothed it all out. Then when reassembling those parts I did not tighten the screw (part #9) too tight, just finger tight with the screwdriver and it now turns very smooth.

I realize that some people don't want to go to that trouble, but it works.
I highly recommend everyone with a clone V4 to take completely apart (excepting O-rings) and clean it thoroughly and to get acquainted with the parts and their assembly.

This is one amazing piece of engineering!

(9) should tighten down or you get fluctuating ohm readings. If it restricts the JC control, you can lightly sand down (7). I had to do that on both FT and FC versions.

My issue right now is with my Cloupor Mini and FT Hana mini clones where the 510 pin are adjustable and it tends to loosen (1) on the KF v4's. I'm planning to upgrade the Hana mini to a DNA40 with VT 510 so it should be an issue with that but the Cloupor Mini is a pain in the ..... Might have to upgrade the 510 on that too. Both my VS DNA30 and rDNA40 have spring loaded 510 pins and I have absolutely no issues with those.

 

[doofy666]

What were your issues?.

(With the Tobeco clone)

The main thing is the machining error between #3 and #8. I've shimmed #3 with a bit of 10 thou but it's not quite right. I still have to shave #7 a bit. Many thx to dwcraig1 for this.

Next is dry hits. I might have solved this with 3mm coils and short, trimmed wicks. But I still don't trust it. I thought at first it was cos I am a newbie, but my authentic wicks any old how. The tobeco is temperamental. I can see no obstruction to juice flow.

And it came drenched in machine oil. It took a full strip down and 30 mins of ultrasonic to clean it. It would've been uncleanable without the ultrasonic.

Unfortunately I have invested too much work in it to simply throw it away which would be my preferred option.

 

[nelsonm64]

today I replaced #16 o-ring on my robottech K4 with a buna70 11x1.5mm and, sofar so good bought 12x1.5 just incase but they are to big...

 

[Monotremata]

I'm a mouth to lung guy. I tried lung hits and it just doesn't do anything for me. When I want to impress friends, I'll do a lung hit for a ton of vapor.

I've been building 2.4mm - 2.8mm coils @ 1.2Ω - 1.6Ω for a while. I started with 2.0mm but found it wasn't that great after a tank. What I found was that it was gunking up too fast and was getting dry hits because there wasn't enough wick in the coil. Now with the bigger coils and rayon, I rarely get dry hits even while chain vaping. Better flavor and vapor too but at the expense of using more juice.

Holy crap you were right! Decided to bump up my normal 1.5 ohm 5/64" to a 3/32” last night. Followed Steam Engine to hit 1.4 but somehow ended up at 1.7?? Noticed right away my cotton yarn is just right to slide in.. Juiced it up and bam, vapor just about doubled and gives almost as much as a lung hit, and the flavor is more in my face now!! Sucked down almost a whole tank last night haha.. I'm guessing the increased airflow is why it works so well with the bigger coil? It hits better than my Magma which has the same size in it!

 

[Mazam]

Friend had his replacement #16 fail again today. First thing at work this morning too. Spent the the day carrying around his drip tip sneaking hits off mine whenever i put it down lol.

Guessing that the first tank that improves upon the design flaw (imo) of having your JC live and die off the constant wear and tear of an oring is gonna sell like hotcakes

 

[Mazam]

I saw on another board that the orchid base (v3 confirmed) fits inside the kayfun v4 chimney too btw. About to give that a test run when i get home and settled.

 

[Hemptation]

it does, the orchid base is interchangeable. just got a tobeco KF4 today to see if it was comparable to the Erl. and it def has its good points. I like a bit airy draw, so the Erl still takes the cake. I did notice that the Erl clone has a real small chimney. and is in no league with the the, or even the ErlPrinze overall I am pretty impressed with the KF4 cone I got. for the price that is, maybe not enough to buy an original, for that kind of money I think I will purchase an Origin genesis. it was not that hard to get the hang of the juice control either. after watching a Phl B. video everything just made sense.