Vivi Nova Rebuild tutorial

[gdeal]

Does the ceramic cup just sit in the tube?

And are you just using the VN's top cup to make the seal unmodified when fully assembled for vapin'?

The ceramic cup sits in a slightly slot torqued Vivi Nova head. Since the ceramic is a tight fit, I used a previously bored open head that I use for 5mm CC wicks. The bottom of the ceramic cup is long, so I use the botton silicon seal (the one below the ceramic cup) in the CE4, to seal the cup in the Vivi head. The cup will sit much higher than a stock Vivi head, so I used the original CE4 top silicon seal trimmed to fit and seal with the Vivi tube screw top. I put this in a older style vivi which has a lower base than the newer Vivi, so I assume this mod in a newer Vivi will require the top seal to be trimmed a bit more.

 

[Errol]

vaping zone and the super concentrates are excellent. I have dozens And more dozens of all the top flavoring brands, but rarely use them anymore.
Just treated myself to a huge order today with vaping zones sale.

they have free shipping also.' To stay on topic though- wish they carried the vivi mini's, but the sale is only on all their liquids.

Must be popular to discount flavorings during the summer. Good Prophet has a 30% sale on their DIY supplies and a pretty good price on the ViVi Nova at $8. Have a half dozen but couldn't resist another at this price with a free shipping order.

Would liked to try Vaping Zone flavoring but I didn't see anything other than Vanilla that I'd feel comfortable trying with $5 shipping so I'm taking advantage of GPs 30% sale to stock up on a dozen flavors at $4.19 for 30ml.

Errol

 

[WindLvr]

Any idea who makes the one at Good Prophet? It seems very different than all the Vivi Nova tanks I currently have, but I really do like that price! None of mine hold that much juice, and the metal piece inside the silicone cap is different as well. Can't tell where the air holes on this one from the pixelated pictures either. I have no experience with this vendor, so are they pretty reputable? Do they do good business? Fast shipping?

***Crap! I have to pay tax there because I live in Pennsylvania!***

 

[mrelwood]

Will try #400 next, or 1cm of #500.

1cm of #500 didn't work that well, so I went in the other direction: 2.5cm of #500 SS. This is atleast as good as the 2cm one, but the difference could also be in the new legs I did. I previously had issues with the NR silver legs, so I used double twisted kanthal as legs. I now used Kanthal-Silver twisted legs, and they have a perfect contact, and I get to use atleast 1 wrap of more coil. This setup is so far the best.

Summary: 26 strands of cotton, 5x25mm of #500 SS wrapped on a 1.5mm nail, Kanthal with Kanthal-Silver twisted legs (1.9 ohm) wrapped around a 2mm pole. Hard to imagine getting any better performance. Longetivity will be discovered later.

 

[gdeal]

1cm of #500 didn't work that well, so I went in the other direction: 2.5cm of #500 SS. This is atleast as good as the 2cm one, but the difference could also be in the new legs I did. I previously had issues with the NR silver legs, so I used double twisted kanthal as legs. I now used Kanthal-Silver twisted legs, and they have a perfect contact, and I get to use atleast 1 wrap of more coil. This setup is so far the best.

Summary: 26 strands of cotton, 5x25mm of #500 SS wrapped on a 1.5mm nail, Kanthal with Kanthal-Silver twisted legs (1.9 ohm) wrapped around a 2mm pole. Hard to imagine getting any better performance. Longetivity will be discovered later.

Have you tried to increase width .5MM on your SS and coil dimensions? You will get 30% more vaporizaton surface area.

On the 325 mesh experiment. Perhaps the SS mesh really is not acting as a wick. More like a pass through vaporization surface. At 325, you probably lose the thinner juice layer on the surface relative to the tighter porosity of 400/500?

 

[Shofixti]

Has anybody tried doing a ss mesh wick for a vivi nova 2.5 head? The slots seems to be narrower than previous versions.

Do I really have to file it down or is there another way?

 

[gdeal]

Has anybody tried doing a ss mesh wick for a vivi nova 2.5 head? The slots seems to be narrower than previous versions.

Do I really have to file it down or is there another way?

...have you read through the posts in this thread? There are numerous example of this.

 

[Shofixti]

Yes I have, all I see are heads with wider slots. I assume they are V2?

Would appreciate it if you could point me to the right post. I may have missed it.

 

[mrelwood]

Have you tried to increase width .5MM on your SS and coil dimensions?

I did. Felt like the coil took a few seconds longer to warm up and give a good vape. The surface area seemed to be less important than the right measure ratios. I believe it's the same as a straight resistance wire would barely heat up anything around it despite the larger area.

Has anybody tried doing a ss mesh wick for a vivi nova 2.5 head?

You mean SS only? I did on a Vivi Nova Mini. Posted the results a few days ago.

 

[Shofixti]

Layering the cotton wick above the coil didn't perform that well. My theory is that since a part of the wick is covered, there is less area (or length) where the coil can create vapor, as well as the bottom side of the coil and mesh without having a direct juice source getting dry during a single puff. Wick inside the coil and mesh gives atleast 30% more vapor, flavor and hit.

I tried to take pictures, but even the 1000W work light didn't give me good lighting conditions. Unfortunately I ain't a photographer...

Here's the assebled ato:
https://www.dropbox.com/s/4poit1537tm019g/Photo 24.9.2012 9.55.53.jpg
View attachment 137537

Here's without the cap:
https://www.dropbox.com/s/z876b1xsteou8v0/Photo 24.9.2012 9.54.23.jpg
View attachment 137538

Here's the coil, although you can't really see it:
https://www.dropbox.com/s/1o0bdh4ajq4t9oy/Photo 24.9.2012 9.53.38.jpg
View attachment 137539

Are you refering to this? The slots looks a lot wider than what I got. I'll try to post a photo asap. Would really appreciate any help I could get.

 

[Shofixti]

This is the head I have to work with:

I wanted a single ss wick but it would not fit. Would the predator head technique work on this? Smaller multiple ss wicks?

 

[gdeal]

This is the head I have to work with:

I wanted a single ss wick but it would not fit. Would the predator head technique work on this? Smaller multiple ss wicks?

That is the older vivi head. The slots are smaller and longer. Predator (multiple SS wicks) may work. The challenge is that it is difficult to get the wicks into a configuration in the head so that the coil has 100% contact. If you are not against opening the slots, I would use mrelwoods technique or if you want ss with an overlay, try MikeE3 technique. The cotton overlay softens the vape a bit. Both have less complexity and both work well.

 

[Shofixti]

Oh yeah, I remember Mike's technique. Much simpler. May try that out. Thanks bro.

 

[MISTer E]

Errol I lunched out on my last post, I am really enjoying VZ alcohol based blueberry, a nice floral to fruit ratio. It is potent after the mix & mellows a bit in a few days. I like it fresh mixed & mellowed. warning: MISTer newbiE has only tasted this blueberry

gdeal is the real deal!, laying waste to the over the grail seal issue MikeE3 & many may have with the ceramic grail mod. (I do not use soft silicone type stuff over the coil) Sweet pix gdeal, the ceramic shines with glassy pinpoints reflecting your lighting off the Eliqiud coating. With that mesh bamboo, I imagine masses of tasty vapor

I would like to note, that before I could use the ceramic as a head, I used it to replace the siliconey thing. It was not a perfect seal & it seemed to tighten the draw a bit. I figured it could be used for people whom over modded the air restriction too much & reduce the flow a bit for them.

mrelwood like a vapor science journal of experimentation, feeding valuable information to help others vapor experiments. Very interesting on the warm up time.

Shofixti I have filed one wider, not to fit ss mesh. Just to use a thicker wick. It led to more down the airtube shaft pooling for me(base leaks). I went too crazy with the file. I would post a pic, but I seemed to have tossed it away. I hope you find some of the posts here & in other threads
about modding the slots. I know I need to re-review them too,

chohan & anyone waiting for my ceramic grail head tutorial. I have the images, ready I think . It will take a few minutes to upload them, because its an all image based mass of megabytes. The ceramic head mod is just the way I do it, & I hope if anyone tries it they can enjoy it their way. I shall try to keep up with questions, but it takes me along time to write my posts & keep up with all of the post here on ECF.

I would like to add a disclaimer that hemp twine is an acquired taste that many will not enjoy. It has more of a taste than cotton. I have only just got into using cotton & I find its taste dissipates & then seems to disappear. Whereas hemp taste remains & does not taste great with all liquids. Do not rush out to get hemp, because i used it in the tutorial.

Be right back soon, I hope.

 

[MISTer E]

 

[gdeal]

I did. Felt like the coil took a few seconds longer to warm up and give a good vape. The surface area seemed to be less important than the right measure ratios. I believe it's the same as a straight resistance wire would barely heat up anything around it despite the larger area.


You mean SS only? I did on a Vivi Nova Mini. Posted the results a few days ago.

Can you expand on your comment "right measure ratios"?

Using your measurements I get a wick thickness of ~.5mm. (thickness from wick outside to the inside hole) If you go .5mm larger on coil and wick, you can use 35mm of ss rather that 25mm to get a .5mm thickness wick. It you want the same wattage on a wider wick, just raise volts.

Your 1.9 ohm coil on a 2mm base is about 6 turns of 34ga. If you use 6 turns of 34ga on a 2.5mm base you get a 2.3 ohm coil.

To get the same wattage over the same wick length you just increase voltage. So, if you are using 3.7v on your 2mm coil, you need about 4.1v on the 2.5mm coil. Both will yield ~ 7.3 watts.

Am I missing an important point?

 

[gdeal]

MISTer E

Outstanding! Emmy award winner.

 

[chohan]

MISTer E

Outstanding! Emmy award winner.

Agreed, fantastic job. Methinks I'll give it a shot with some Aunt Lydia's bamboo. Thanks for taking the time to work all that up. And the rest of you also... plenty of great ideas in this thread to keep me busy.

cheers,
cho

 

[silversx]

so i put my genesis aside last night and decided to rebuild a vivi.. turns out very easy and vapes good.. but then i noticed that there was smoke/vapor in my tank???!! and the taste was a bit funny.. is that due to the legs touching the rubber grommet? i read about twisting the legs to eliminate this but not sure exactly how and where

does anyone have any pics of how they should be twisted? do i only twist the positive end? and once they're twisted and installed can i cut the extra wire off?

 

[gdeal]

so i put my genesis aside last night and decided to rebuild a vivi.. turns out very easy and vapes good.. but then i noticed that there was smoke/vapor in my tank???!! and the taste was a bit funny.. is that due to the legs touching the rubber grommet? i read about twisting the legs to eliminate this but not sure exactly how and where

does anyone have any pics of how they should be twisted? do i only twist the positive end? and once they're twisted and installed can i cut the extra wire off?

This is a picture of Sicarus's double coil. His twisted legs provides a very nice example.



Follow the first tutorial in this thread for installation and wire clean-up.

Smoke vapor in the tank is from a loose seal on the silicon cap or you head is not screwed all the way into the base. Funny taste could be legs burning rubber, short in the coil, what was on your hands when you twisted your wick....your wick burning etc..