TFV4 ISSUE'S

[sonnyjim007]

I have been using the smok tfv4 tank since xmas, apart from early wicking issues(which I kindly found the answer to on here) it's got great air flow, great flavour and great capacity for juice. However, I'm now having issues when I fill the tank all the way up to the top, if I do this it just doesn't wick properly. If I only put 1 or 2 ml in it works amazingly, I've tried smaller/larger coils, longer and shorter wicks and tighter and looser wicks. But not matter what I do with a full tank it's always...dry hit and re wicking required. Does anyone have any suggestions what so ever I'm happy to carry on doing what I'm doing but it's not ideal, I may as well be dripping

Appriciate any feedback

 

[Bunnykiller]

sounds like there isnt enuf air volume in the tank ( filled too full) to allow the juice to "pump" into the wick when you inhale.
Its called pressure differential displacement.....

 

[sonnyjim007]

It is definitely an air pressure issue, however when I fill it just over the bell cap for the coils/deck that's when it starts happening. So there could be 4 or 5 mm gap from where the juice sits to the top of the tank. If I go just below the cap it's perfect, strange one I know just hoping someone else has had this, I'm even considering changing to another tank but I love the airflow and flavour I'm currently getting. And do not know of another subtank quite as good, although that's for another thread I think

 

[ufosnowcat]

i never had this issue and i regulary fill it to much (point of juice overflowing)
i normally use 40pg/60vg maybe juice thickness could be related?

 

[sonnyjim007]

I must admit to mixing at 80/20, so high VG juice, I've tried mixing at 70/30 it didn't really make much difference and because of that, that's how I realised it must be air pressure that was my issue. It's definetley got to be worth worth dropping again then. I will try 60/40, problem is my friend got the same tank after he tried mine and we generally mix the same vg/pg and his is working perfectly (very annoying for me ). I will give that a try after work tonight though

 

[wheelie]

I was having trouble with Max VG. Went to 30pg/70vg and that went well but on occasion I was getting the odd dry hits still. Went to Rayon wick instead of cotton and that solved the problem. Interesting about filling to full. I was filling it too full sometimes till I seen juice come out the top but I stopped doing that. So perhaps that was the problem from the beginning. Have not got the duel RCA working as of yet as I am still perfecting the single coil RCA. Then the triple RCA. I love the tank but have only had it a couple weeks. CHEERS!

 

[suprtrkr]

I think I would try rayon.

 

[mudmanc4]

[...] I tip it, and fill that bubble. Every time I fill.

Sounds as if you are speaking directly to a rebuild able deck. Which in my experience is as touchy as it gets. Wicking style is crucial. Such as placing a clapton in there, that is a tough one, Too much wick, and no flow, not enough wick, and leaks through the air intake.

I've adjusted my wicking to the point where the cotton is all but combed straight and as even as humanly possible, end to end, prior to placement.

Then I don't shove the wick into the slots, I place it just below the deck , so that juice gets through the lower channel and fills the cavity under the wick, while keeping enough wick at that point, to stop free flow.

/book

 

[sonnyjim007]

You are correct it is the dual rba I'm using, I've had trials and tribulations on the wicking front and I had it working for well over 6 weeks using the same wicking style, but as I say it just stopped letting air bubbles out at some point in the last fortnight, I've had a dual clapton in there and as you say hard to fit it all in. I was hoping someone would say oh sounds like that seal gone or somthing along those lines, but it seems not to be the case. I appriciate everyone's comments none the less

 

[MikeTay9779]

First off I've been using my TFV4 about the same time or maybe a little longer than you....the only problems I've had are all wicking problems...the juice channels on the dual rba are small in my opinion, but once wicked correctly should give you error free use...try trimming the wick just short of the bottom of the juice channels...if there is too much cotton there it won't wick properly...I DIY my own juice at 20/80 pg/vg and I have no problems wicking...good luck....hope you find out what works.

 

[Robert Cromwell]

i never had this issue and i regulary fill it to much (point of juice overflowing)
i normally use 40pg/60vg maybe juice thickness could be related?

Yep what I was thinking. thick juice.

 

[sonnyjim007]

So theres the top juice channel then the ring around the middle then another juice channel, i have been positioning the wicks above the "ring" so not to have the wicks in the bottom part of the deck (apparently to let air out easier) so maybe just a smidge longer will do it, also not sure it's of any note but I've used koh gen doh and cotton bacon and same problems with em both. I will have to go back to the drawing board then maybe it is just wicking, if it is its super annoying I can't tell you

 

[ufosnowcat]

I think I would try rayon.

idd from all ive read rayon is indeed a lot better wicking in tight conditions (trying to get a load but no luck so far i'll have to order it from the us)

You are correct it is the dual rba I'm using, I've had trials and tribulations on the wicking front and I had it working for well over 6 weeks using the same wicking style, but as I say it just stopped letting air bubbles out at some point in the last fortnight, I've had a dual clapton in there and as you say hard to fit it all in. I was hoping someone would say oh sounds like that seal gone or somthing along those lines, but it seems not to be the case. I appriciate everyone's comments none the less

using the same cotton for to long could lead to the cotton getting dirty/blocked
new cotton could be a bit tighter than you tought
a seal going would equal leaking

disclaimer; i'm not claiming to be an expert, just trying to think out load and try to reason along your points
honestly i dont like the dual that much (regret not getting the single) i mainly use the tfv4 with the tripple and quad coils (find them better than w i can do) and the bachelor (that one even i can do(crazy builds and everithing works in its own way ;p))

 

[suprtrkr]

idd from all ive read rayon is indeed a lot better wicking in tight conditions (trying to get a load but no luck so far i'll have to order it from the us)

Look at a beauty supply shop, that's where most of us get it. It is used when ladies color their hair.

 

[ufosnowcat]

Look at a beauty supply shop, that's where most of us get it. It is used when ladies color their hair.

been looking for Graham Cellucotton Beauty Coil 44130 --> rayon (different sizes) in europe im only finding the 42251 same size but normal cotton, its like they dont do rayon here (and i would like something in a handy box over unrolling small balls that i would have to go search in germany)
srry for the off topic ranting but that one has been bugging me

 

[suprtrkr]

been looking for Graham Cellucotton Beauty Coil 44130 --> rayon (different sizes) in europe im only finding the 42251 same size but normal cotton, its like they dont do rayon here (and i would like something in a handy box over unrolling small balls that i would have to go search in germany)
srry for the off topic ranting but that one has been bugging me

Ah! Well, I can't help that. It's true Graham makes it both ways.

 

[sonnyjim007]

Vaping outlaws seem to make rayon for sale in the uk, only in 30 cm strips at about £1.50 a pop. Being fairly new here not sure I'm allowed to post the site I found it on. But a quick Google search will allow anyone to find it like I did, upon the recomendations I've purchased myself some, after all you can never have enough options. Going back to my problem the damn thing seems to be working whilst reasonably full certainly more than I have been doing. Still at 80/20 but with the slightly longer wicks, it's just a bit random it doesn't always work which is so frustrating as it's amazing when it does. Hoping it lasts longer than a day this time

 

[MikeTay9779]

So theres the top juice channel then the ring around the middle then another juice channel, i have been positioning the wicks above the "ring" so not to have the wicks in the bottom part of the deck (apparently to let air out easier) so maybe just a smidge longer will do it, also not sure it's of any note but I've used koh gen doh and cotton bacon and same problems with em both. I will have to go back to the drawing board then maybe it is just wicking, if it is its super annoying I can't tell you

I wick all the way to the threads maybe just a hair shorter...just got to make sure it stays in the juice channels.