Burning Taste on a few Vivi Nova head coils

[Coersum]

I recently started vaping again, got my old Riva 510 manual batteries (3.7v 650mah) and my old 901 usb passthrough + 510 adapter out of my old vaping stuff.

One battery is dead, the other works well + passthrough so I ordered a Vision Vivi Nova 3.5ml tank (official one) which came with a 1.8, 2.4 and 2.8 ohm head coils, looking around I decided to also order 5 replacement head coils at 1.8 ohm each.

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Day 1:
Using : both battery and passthrough
Coil: 1.8 ohm that came with the nova
Result: GREAT, but burn taste started after a day or so...

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Day 2:
Using: Battery Only
Coil: 2.4 ohm that came with the nova
Result: ok (not as much TH or vapor) but burn taste started after a couple of hours.

Using: Battery Only
Coil: 1.8 ohm extra ordered
Result: burn taste right away and for the hour or 2 after that (till now I only change the head using same liquid just topping off).

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Day 3:
Using: Battery Only
Coil: 1.8 ohm extra ordered (2nd one)
Result: burn taste right away and for the hour or 2 after that.

Using: Passthrough Only
Coil: 1.8 ohm extra ordered (3rd one)
Note: took everything appart, cleaned with hot water, hand paper dry + let air dry. Brand new juice.
Result: burn taste right away and for the hour or 2 after that .

Using: Passthrough Only
Coil: 2.8 ohm 3rd coil that came with the tank
Note: again took everything appart, cleaned with hot water, hand paper dry + let air dry. Brand new juice.
Result: burn taste right away and for the hour or 2 after that (watching the Packers win! woot).

I always make sure to fill the tank to 3/4, and roll the tank to make sure it wicks and I don't dry vape, there is always liquid present. I also let it sit for 10mins after filling the tank.

Throughout the tests, I made sure to use juice I could taste (peppermint candy cane or Irish Cream), nothing comes close to that first one (even on first one I could slowly start tasting burn). My wife even asked me if something burned, she could smell it in the air by my desk...

Maybe I am doing something wrong, I know I have to expect bad coils from time to time but that many in a row is a stretch... I tried during dried burn before to add the liquid (5 sec 3 times), tried cleaning the heads to test them again... same story...

Sadly I can't find my mutimeter to check the actual battery and passthrough power but it worked the 1st day so I don't know anymore... the battery charges fine, fires fine (coils turn red if I dry test)... (ordered all that from aquavapor, confirmed all tank/heads are official vision ones).

 

[Kable]

Might want to read through this thread about this issue:
http://www.e-cigarette-forum.com/forum/new-members-forum/357876-mini-vivi-nova-help.html

 

[Coersum]

Might want to read through this thread about this issue:
http://www.e-cigarette-forum.com/forum/new-members-forum/357876-mini-vivi-nova-help.html

Thanks for the link, sadly I have already tried the stuff said in that thread

Clean tank and coils: done
Tip/Roll to keep it from vaping dry: done
Too much power? Following this chart, my 3.7v should be fine with either 1.8 to 2.8ohm which I tried.

Maybe I am not doing the dry burning correctly (I tried that one 2), I open it up so I can see the coil, no liquid, dry burn for 5-6sec, 3 or 4 times....

 

[kiwivap]

Your dry burning sounds ok. I do that too, until the whole coil glows. If you stop the dry burn before all the gunk is gone it can give a burnt taste. So I do the 5 seconds, rest it 3-4 seconds or so - but I do have to do it more than 3 times in a row before they are properly dry burned quite often. That may be the issue for you - that you are partially dry burning off the gunk but some is still there and causing a burnt taste.

 

[StereoDreamer]

One easy modification that I do to ALL my Vivi Nova heads to help wicking is to "fluff" the ends of the wicks. On the heads that have multiple wicks (the 1.8 and 2.4 ohm heads), I hold each individual wick between two fingers about 1.4" from the end, and un-twist the threads on each one. When I get them all un-twisted on the ends, I'll brush them over my finger lightly to fluff them out a little more. On the 2.8ohm head (which has a single, thicker wick) I do the same thing--un-twist and fluff it out but a little further up so more of it is fluffed.

This seems to go a LONG way to help with wicking, and makes them less likely to get burnt-tasting or have dry hits. You also don't need to wait so long between hits, as the fluffed wicks seem to absorb and wick up the juice quicker.

Also, you need to have pretty good airflow through the Vivi Nova, so it will hit hot and rough. I don't screw mine all the way down tight on my mod. I'll screw them in until they are JUST finger tight, and then back them out about 1/4 turn. That way they are still tight and don't wobble in the threads, but it increased the airflow a little and makes them vape a little cooler, and with better vapor production.

Also, I ALWAYS soak my heads in Everclear for a few hours when they are new, and do a dry burn before I ever use them. And when I clean the tank (every two refills or whenever I change flavors) I soak the heads for several hours in Everclear, and then let them air-dry overnight, and do a dry burn before re-installing them. I also put a drop or two of VG on the coils after each dry burn. That way if I'm not going to use them right away, they don't oxidize too much and seem to stay "fresher tasting". If I'm going to use the head right away, I find that a drop or two of VG on the coil helps get the new juice wicking into the coil faster. The first few vapes will taste a little light in flavor, but after the second or third hit, they vape like a champ--clean, full-flavored, and produce clouds of vapor.

Good luck, and keep experimenting. The Vivi Nova can be a VERY good tank if you fiddle with it a little bit.

 

[Cetra]

Pretty much what Kiwivap said. I run the dry burn for 2-5 second bursts. I always know it's completely degunkified when the whole coil glows within a couple of seconds. If it doesn't there's still some gunk. But when the dry burn process is complete you should see the entire coil glow within jst a couple of seconds.

 

[kiwivap]

Are you dry burning new heads before you use them? Just re-read your post it, it looks like you're dry burning before you use a new head. Is that the case? I never dry burn a new head. I dry burn after a tank or two.
I have some heads that have been going for over a month. I'm vaping with one now.
I haven't tried stereo dreamers wick fluffing - I've heard that is good for some people. I have found that the vivis shouldn't be screwed on really tight. That usually just impedes airflow though.

I'm a bit puzzled that this is happening with every head you use. With a 3.7 volt pv I use resistance of 2.4 - 2.8 ohms. I think the 1.8 ohms may be an issue here, and also if you are dry burning partially could be something to do with it too.

 

[StereoDreamer]

Are you dry burning new heads before you use them? Just re-read your post it, it looks like you're dry burning before you use a new head. Is that the case? I never dry burn a new head. I dry burn after a tank or two.

Yes that is the case. I soak them in Everclear for a few hours, dry the end of the wicks gently with a paper towel, and then do a short dry burn. (usually just one or two cycles gets the entire coil glowing when they are new).

I do this to make sure I've got any sizing cleared out of the wicks before I start using them, and it seems to work well. I mostly use the 2.4 heads, and I'm vaping juices that are almost all 30/70 (so they are on the thick side). I My main two heads are now about 2 months old, and still chugging along just fine...

 

[Cetra]

I usually dry burn new heads to get that awful primer flavor off of them. lol, gawd I hate that flavor.

 

[kiwivap]

Yes that is the case. I soak themin Everclear for a few hours, dry the end of the wicks gently with a paper towel, and then do a short dry burn. (usually just one or two cycles gets the entire coil glowing when they are new).

I do this to make sure I've got any sizing cleared out of the wicks before I start using them, and it seems to work well. I mostly use the 2.4 heads, and I'm vaping juices that are almost all 30/70 (so they are on the thick side). I My main two heads are now about 2 months old, and still chugging along just fine...

Ah. I've not done that with new heads. I vape a thinner juice than you though - usually 80/20 or 70/30. Haven't noticed any primer to be honest. My vivi heads are lasting well. I think the OP may have a combination of needing higher ohms and maybe adjusting the dry burning.

 

[PickyJuicer]

I generally use the 2.4 heads on my bolt (it's 3.7 volts I believe). I ran out of all heads for my mini vivi except for the 1.8. I think my husband has been rummaging through my drawers...

So now I'm nursing this thing. With the lower ohms and higher volts, it's burning hotter giving me a singed taste here and there, although not a true dry hit taste. Once you get a little singed taste, it's hard to ditch unless you clean or replace it.

It's a good thing that I have to go to my vape shop later - the hubby is getting a hand painted glass carto/tank setup for christmas from me but I don't know how to set the darn thing up so I'm going in for a tutorial. Not sure he deserves it after the head-napping offenses.

 

[michliu]

In the pbusardo video in the other thread, he cuts a notch in the silicon cap. Try doing that to help with the wicking. I find really sweet juices gunk up the coils pretty quickly. Also, the coils are usually wound pretty tight and can impede wicking. If you aren't into rebuilding the coils, try cutting the notch and laying an extra piece of wick or cotton over the coil under the silicon cap. A tiny bit of rolled up cotton ball or cheesecloth will do. Just make sure the wicks aren't pinched tight to prevent wicking.

 

[klynnn]

I usually dry burn mine after I clean so the wick is still damp, just keep pulsing the button for 5 seconds each time. It will start smoking and eventually the coil will glow. If you are using very sweet juices you will dry burn more often. I only use the mega just find it easier to fill. Save your heads they are easily recoiled. I have never had to notch the silicone caps, but make sure the flat side of the metal piece inside the cap faces down towards the battery.

 

[Coersum]

I generally use the 2.4 heads on my bolt (it's 3.7 volts I believe). I ran out of all heads for my mini vivi except for the 1.8. I think my husband has been rummaging through my drawers...

I just did another clean all, new juice using the 2.8, I think it's a little bit better, sucks that I ordered the 1.8... I think I am going to get a Variable wattage soon, this way I won't have to worry about that. Sadly they don't come cheap!

In the pbusardo video in the other thread, he cuts a notch in the silicon cap. Try doing that to help with the wicking. I find really sweet juices gunk up the coils pretty quickly. Also, the coils are usually wound pretty tight and can impede wicking. If you aren't into rebuilding the coils, try cutting the notch and laying an extra piece of wick or cotton over the coil under the silicon cap. A tiny bit of rolled up cotton ball or cheesecloth will do. Just make sure the wicks aren't pinched tight to prevent wicking.

That was one of the first video I saw when researching the Nova's, I also tried it but didn't do anything.

I think my problem might just be voltage problem, I kept thinking it couldn't be voltage because my first 1.8 ohm worked fine but just because it was etched 1.8 ohm doesn't mean it wasn't REALLY a 2.2/2.4+

 

[Dansauls]

I fixed this issue, I quit using ViVi Nova tanks. I hate dry hits and too many other issue. I like low maintenance vaping.
I have had real good luck with the bottom feed clearos....

 

[Maka]

I have had real good luck with the bottom feed clearos....

which ones?

 

[Dansauls]

I like the Kanger T3 EGO bottom coil tanks

 

[Coersum]

I fixed this issue, I quit using ViVi Nova tanks. I hate dry hits and too many other issue. I like low maintenance vaping.
I have had real good luck with the bottom feed clearos....

This is what I was looking for by going the Vivi Nova tank way (low maintenance)! When I was doing research I wanted to either go with the Kanger T2 or Vivi Nova (found the switching head on the T3 to be too messy) but I can see how bottom feeding head can help constant wicking.

I think I am going to do some more research and see about using one of the true rebuild-able like the genesis types.

 

[Thompson]

I just did another clean all, new juice using the 2.8, I think it's a little bit better, sucks that I ordered the 1.8... I think I am going to get a Variable wattage soon, this way I won't have to worry about that. Sadly they don't come cheap!



That was one of the first video I saw when researching the Nova's, I also tried it but didn't do anything.

I think my problem might just be voltage problem, I kept thinking it couldn't be voltage because my first 1.8 ohm worked fine but just because it was etched 1.8 ohm doesn't mean it wasn't REALLY a 2.2/2.4+

The VAMO is VW for $40~ doesn't get much cheaper than that
My 2.4Ω head that came with my Vivi reads 3Ω. The inconsistencies with these heads are a joke IMO and until they fix that problem I personally won't be giving any more money to the headaches.

If your feeling up to it, rebuilding VVN heads isn't that difficult, its much much much cheaper than buying factory replacements, and gives complete control. I'm using #400 stainless steel mesh and 30awg Kanthal A and there is no comparison between this setup and the stock heads.

If that is too much, I have read of people just lightly pulling the wick out of the stock heads and replacing it with bamboo or cotton. Either should wick better. But seeing how tightly wrapped these stock coils come, I could see that being just about as much of a chore.

 

[Coersum]

The VAMO is VW for $40~ doesn't get much cheaper than that
My 2.4Ω head that came with my Vivi reads 3Ω. The inconsistencies with these heads are a joke IMO and until they fix that problem I personally won't be giving any more money to the headaches.

If your feeling up to it, rebuilding VVN heads isn't that difficult, its much much much cheaper than buying factory replacements, and gives complete control. I'm using #400 stainless steel mesh and 30awg Kanthal A and there is no comparison between this setup and the stock heads.

If that is too much, I have read of people just lightly pulling the wick out of the stock heads and replacing it with bamboo or cotton. Either should wick better. But seeing how tightly wrapped these stock coils come, I could see that being just about as much of a chore.

My plan in the long run was to rebuild them, I've seen a few videos about it and it didn't seem very hard, that was the reason I went with the VVN instead of Kanger T2 (much cheaper head coils). Now I am wondering if I would not be better off going with a Genesis type tank as they are much faster to replace (do you ever have to replace SS wick?) (Griffin Stainless Rebuildable Atomizer or the DID)

PS: did you find a vamo kit for $40 from a US supplier or is it with no battery ?