Anyone found a solution fir the burning Vivi Nova grommet issue?

[sawlight]

I'm really noticing the muted flavor on mine! I have a 555 type blend that I really LOVE! But in the Nova, I don't get the sweet peanut butter finish I get with other style tanks. Not sure what I'm going to do with this as I just bought 60ml's of that juice!
Mine is also more airy than I had imagined, not a real bad thing, but different for sure.

 

[FigNuts]

@Fignuts -- maybe you got a dud? It's possible. I currently have 12 Mini Vivi's filled with different juices in constant rotation. All 12 are always filled with juice. No leaks and no burnt taste. I use the 1.8ohm heads on a Twist at 3.6v with 50/50 juices and they perform like champs. I have yet to replace a head and three of them I've had since Oct. 12th. I also don't clean them nearly as often as some people do and don't have any problems, although none of my juices are dark colored. The only thing I've noticed is that if I haven't used a particular one for a couple days it takes a couple of hits for it to fully wake up.

There are some on here that knock the Vivi's, but a whole lot more that are in love with them. I find they mute the flavor maybe 10% vs. dripping on an atty but, for me, their convenience and reliable performance more than makes up for that. They're all I use these days.

Wow, 12 of them! That's crazy! Not like obsessive crazy, but pretty awesome crazy!

Maybe I jumped the gun on rebuilding the heads too soon, I was so excited to start rebuilding, I never thought to wash them. I'm a pretty heavy vaper IMO, I go through about 5-8ml a day. As soon as the flavor changed, I thought it was time to rebuild, about 3 days.

I saw the Zen and thought that was pretty cool, that's why I ordered the AGA-T, looks like a similar setup but 1/5 the price.

 

[texandziggy]

Wow, 12 of them! That's crazy! Not like obsessive crazy, but pretty awesome crazy!

Maybe I jumped the gun on rebuilding the heads too soon, I was so excited to start rebuilding, I never thought to wash them. I'm a pretty heavy vaper IMO, I go through about 5-8ml a day. As soon as the flavor changed, I thought it was time to rebuild, about 3 days.

I saw the Zen and thought that was pretty cool, that's why I ordered the AGA-T, looks like a similar setup but 1/5 the price.

I actually don't have any interest in rebuilding. I figure for around four bucks a head I'll just buy replacement heads. I'm not a heavy vaper, probably about 3ml a day or so, which might be why my heads last so long. Plus, with 12 in rotation, sometimes I might not use one for 2 or 3 days. For me, they're great because I like to change juice often, and it takes less than five minutes to clean and change to another juice.

PBusardo has a great vid on cleaning and rebuilding Vivi's. If you haven't seen it, you should definitely check it out:
A PBusardo Tutorial - Vivi Nova Cleaning & Rebuilding - YouTube

 

[FigNuts]

I did a calculation on rebuilding the heads and that was the entire reason I bought the Vivi, before that I was using LR Boge cartos (about $1 ea) I just got tired of dripping all the time and the cost per rebuild is something like 10 cents or less depending on how good I was with wrapping the wire without excess waste.

 

[AttyPops]

I have an authentic VN 2.5 with zero of those issues.

This is either:
A) Knock-off or defective
B) Just a "V.N. hater thread to advertise "Yeah, I got a ______ instead."
C) Pre-2.5 issues
D) Inexperience

The 2.5 came out relatively quickly.
There is no burning with the grommet. No leaking. Any burnt taste you're getting from the wick/coil is probably due to your inexperience with tanks [no offense] (wrong ohms, wicking issues, juice viscosity, etc.) There shouldn't be any burning at the grommet.

Not to be a fan-boy about it or anything...but this makes zero sense. The OP must have an old version or a cheap knock-off. But he sounds like he knows what "the issue" is (there isn't one BTW). So IDK.

Only thing I can say is already said above: verify the make/model, don't burn the juice. There is no v 2.5 grommet burn issue even while using resistance wire end-to-end.

(BTW...doubt it's B above...but everyone chimes in with one of these posts...snide comments fill the thread rather than useful advice. lol)

 

[TheVap3Junkie]

I did a calculation on rebuilding the heads and that was the entire reason I bought the Vivi, before that I was using LR Boge cartos (about $1 ea) I just got tired of dripping all the time and the cost per rebuild is something like 10 cents or less depending on how good I was with wrapping the wire without excess waste.

I got the vivi nova for this reason and this reason alone. I don't have to buy cartos and punch and go through all of the hassle and expense. To be honest I can rebuild heads faster than taking a carto out out of the package, prefilling, punching, inserting in tank, filling the tank and then cleaning up the mess. I messed around for the first evening and found the wick and coil config that works best for me and now its almost all I vape with. Costs me around 20 cents per head compared to the $1.59 a piece I was paying for a boge LR cartos.

 

[Thrasher]

I have an authentic VN 2.5 with zero of those issues.

This is either:
A) Knock-off or defective
B) Just a "V.N. hater thread to advertise "Yeah, I got a ______ instead."
C) Pre-2.5 issues
D) Inexperience

The 2.5 came out relatively quickly.
There is no burning with the grommet. No leaking. Any burnt taste you're getting from the wick/coil is probably due to your inexperience with tanks [no offense] (wrong ohms, wicking issues, juice viscosity, etc.) There shouldn't be any burning at the grommet.

Not to be a fan-boy about it or anything...but this makes zero sense. The OP must have an old version or a cheap knock-off. But he sounds like he knows what "the issue" is (there isn't one BTW). So IDK.

Only thing I can say is already said above: verify the make/model, don't burn the juice. There is no v 2.5 grommet burn issue even while using resistance wire end-to-end.

(BTW...doubt it's B above...but everyone chimes in with one of these posts...snide comments fill the thread rather than useful advice. lol)

the nova is probably the most care free and reliable device to come along in a while, but there are reports of a few bad ones, I sent on back maybe a month ago because the center post was crooked and did not seal correctly, i have seen others with this same issue, and when I still used clearo's I had more than my fair share of vision clearo's with this same issue.
While I in no way say i have any idea what the op is talking about, they are stamping these out by the 1000's and there is a chance there will be a bad one here and there, while I do knock on it it sometimes as I do not care for the nova, I do love the mini. and MVP now sells them with the metal tanks attached for near the same price. (got 2 more fri). just because everyone you have works doesnt mean every single one that comes from the factory will.

 

[AttyPops]

Yeah...hence A) above (defective)

 

[Thrasher]

Yeah...hence A) above (defective)

darn it! I hate multiple choice lol

 

[FigNuts]

Well, I won't claim to be as experienced as you guys, this is my first semi RBA. I try not to burn hot (4.5V max usually on a 2.4~2.8 wrap) but I'm getting some undesirable taste with it. The first rebuild, I tried cotton wick and had a weird taste (prepped and boiled the wick and all), I wrapped just as shown in a lot of the videos with good ohms readings. I thought the cotton was causing the burnt taste, so I ordered silica wick and still had the weird taste. Now when I'm looking at my grommets, they have a burn mark where the wire was. I tried doubling up on the legs and still had weird taste. I'm not putting it down, maybe I am actually doing something wrong. I really like the idea of what it is supposed to be, but when I get leaks and liquid that gets stuck in the black outer jacket, I'm a little perturbed. I would ask for a replacement, but MV says on their site that you cant return them.

I didn't start this thread to hate on it, I just ordered the AGA-T as an alternative to tinker with coil building and changing different NC wire without having to drain or start from scratch. I want it to work, so If I have to order another one to try, I will.

Just to clear this up on a version, It is a Vision Vivi Neptune, so I don't know if that's considered a 2.5.

 

[Thrasher]

yea thats considered one of the new ones, you may have just simply shorted out the coil against the tube and burned the cup, if anything dont worry bout returning it, just buy some more heads for it they are cheap and keep using it, if you want to try again just open one of the new heads.,
the aga t i think will be a little better for a first time thing, as the head is more open and forgiving.

personally I avoided this cover for the very reason you stated while its cool to look at its just a fluid magnet.

 

[macro]

If it's short wick, may be just make it wet turning device.....

 

[AttyPops]

IDK about the Neptune.... the plastic tank on my 2.5 is a flush-fit...no o-rings. I haven't used the metal cover yet. I'd check that the ends are smooth so no leaking....maybe even put a piece of fine sandpaper on a pane of glass...and then run the ends of the metal tube back and forth over it to make sure they are flush (just a thought).

The cotton wicks do have an aftertaste to em. I use SS mesh but that's prone to shorts.

The silica should have worked. IDK. If you're re-wicking, and getting burning around the grommet, I'd seriously consider A) ordering different heads...maybe those have inferior silicone grommets...or B) reconsider doubling the contact points...just twist em around in a little loop at the end where the grommet is.

I wasn't really saying you hated the VN...it was really intended to be a comment on other stuff (like "I just threw mine in a drawer and it's fine there..." ...zero help.)

Like Thrasher said....IDK how it would burn the grommet unless it shorted, but who knows with QC these days. The factory heads I had were a combination of NR and resistance wire. So maybe they aren't worried about the grommet material in new production runs. The hottest part of the wire should be the center post (positive wire). I"m assuming that you got brown spots on the inside circumference of the grommet. If only there and not both...you may have to only double+twist that one end a bit.

 

[FigNuts]

I think I may have just finally realized my issue, I'm using 36AWG NC wire, I think the resistance is too high per mm.

If I switch to a lower ohms/mm wire, I imagine I will be able to do more wraps to get the same overall resistance but far less heat/mm, thus heating the coil and not scorching the rubber grommet.

Guys, please let me know if I'm on the right track!

Any recommendations on what wire brand/type/gauge I should try next?

BTW, i received my AGA-T atomizer yesterday, it's a beast, a lot bigger than I expected and very heavy. It'll make a nice coil practice/test bed for liquids and wick materials.

 

[larktdl]

I think I may have just finally realized my issue, I'm using 36AWG NC wire, I think the resistance is too high per mm.

If I switch to a lower ohms/mm wire, I imagine I will be able to do more wraps to get the same overall resistance but far less heat/mm, thus heating the coil and not scorching the rubber grommet.

Guys, please let me know if I'm on the right track!

Any recommendations on what wire brand/type/gauge I should try next?

BTW, i received my AGA-T atomizer yesterday, it's a beast, a lot bigger than I expected and very heavy. It'll make a nice coil practice/test bed for liquids and wick materials.

I do believe you are correct in your assesment. I tried a new coil rebuilt with 36 awg on the Vivi for the heck of it because I have a lot of it for rebuilding my Eternity. Yick, yuck, yick, yuck. Try using 34 awg and a cotton yarn / silica wick combo on the Vivi. 3 wraps of 34 awg on this type of wick and the results are pretty good (for me anyways).

 

[FigNuts]

Should have read that first, ha ha. I just ordered 100 feet of 32AWG Kanthal A1 off eBay for just under $11. Oh well, just have to make more coils!

 

[JazzyTech]

I have the 4 Stardusts, 2 nova minis, and 1 tank. All are "Vision" and purchased from gotvapes.com (just a customer, no affliation). None of them leak after 2 months of use. The mini seems to be the most solid build of them all. My father recently purchased 2 Stardusts and one of them started leaking. After inspecting it, I realized there were threads missing which made it impossible to tighten correctly.
I've rebuilt them many times (since I like to tinker). I use square-braid cotton and Kanthal A-1 32awg. Resistance is typically 1.6-2.4 ohms (depending on preference). Although I've never had a silicon taste, I did notice that a few of the grommets had a brown tinge where the wire met the metal to them. After I've inserted the grommets and cut the excess wire off I take a screwdriver and press the ends of the wire down flush to the metal. I've since not had any issues with burning silicon.

 

[larktdl]

Should have read that first, ha ha. I just ordered 100 feet of 32AWG Kanthal A1 off eBay for just under $11. Oh well, just have to make more coils!

I think you will be okay with 32 ,,, just wrap it 4 times instead of 3, possibly 5 times but that might be a bit much for the space to work in ...

 

[FigNuts]

I think you will be okay with 32 ,,, just wrap it 4 times instead of 3, possibly 5 times but that might be a bit much for the space to work in ...

My wraps are pretty tight, I found a method to make it easier to wrap silica wicks. I'll try to describe it and possibly post a pic tomorrow.

Take your wick (or wicks), slide them through a piece of heat shrink tubing (just bigger than your total wick size). To make things even easier, I cut the heat shrink tubing to half the size of the total length of the wick (minus half the coil), this makes it easier to get the coil exactly in the midpoint. Then take a pushpin and slide it in the end of the tubing the wick is sticking out of (about 1/4 inch). Now take a locking pair of hemostats (a must have I've found) and clamp the tubing right at the end where the wick is coming out. You now have an easily handle-able way to wrap your coil as tightly as you need to.

Enjoy!

 

[cedric212]

Should have read that first, ha ha. I just ordered 100 feet of 32AWG Kanthal A1 off eBay for just under $11. Oh well, just have to make more coils!

32AWG Kanthal a1 is what I'm using, so you're fine. I typically wrap 5-6 coils (~2mm diameter) and usually the resistance measures in the 2.2-2.6ohm range.