1.8ohm vivi nova on ego c

[mainevaper]

The 1.8 ohm doesn't seem as potent on the standard ego-c battery(3.2v?) as my 2.8 nova on my twist at 4.2v, which, according to the ohms law calculator should be roughly the same. The 1.8's do have a 1.8ohm marking on them, as the 2.8's have a 2.8 on them.
What gives? Is it the difference in battery? Or did I maybe get some mislabeled heads?

 

[mooshman812]

From what ive read they have had some issues with getting the resistance right on the heads lately. Quality control or something. I have the same setup and i usually use the standard batts on the 1.8 and it makes enough of a hit for me. If you have a vape shop near you most of them have a head meter, otherwise you could get a cheap one from harbor freight or radio shack to ensure the heads are atleast close to what they say they are.

 

[mainevaper]

I assume I can just use a regular old multi-meter for that? Where would I touch the prongs to?

 

[mooshman812]

I do one lead in the center hole on the bottem where it screws into the post and one anywhere on the body, not sure if its proper but the res. Always is close to specs.

 

[mainevaper]

Right on! Thanks. I'll b testing some very soon!

 

[Blurgas]

http://i.imgur.com/Ohn8o.png
1.8ohm @ 3.2v is running cooler than the 2.8ohm @ 4.2v

 

[mainevaper]

Ya, about a half a watt, and that's assuming that the standard batt is only putting out 3.2v and not 3.3.
Would half a watt be enough to make a noticeable difference?
I just tested 2 of the 2.8's and 2 of the 1.8's w my meter. The 2.8's are spot on at 2.8ohms, the ones marked 1.8 are registering closer to 2.4ohm. I think that's where the issue is.

 

[mainevaper]

One other thing I notice.WWhen the liquid get down to about half, it doesn't wick very well. I have to turn it/roll it to get a good vape.
Maybe I need to try some bottom feeders?

Kinda pointless to have a 2ml tank if I have to fill up after using 1ml ya know...

 

[the_vape_nerd]

the vivi nova is a great tank i love it but those heads are no way near what they claim them to be...i've had a 1.8 ohm meter at 2.3 for example

i dont think i'd use a nova on a device without variable voltage

if your device meters resistance then see what's up, if not get a multimeter...its a good item to have anyway

 

[Kent C]

One other thing I notice.WWhen the liquid get down to about half, it doesn't wick very well. I have to turn it/roll it to get a good vape.
Maybe I need to try some bottom feeders?

Kinda pointless to have a 2ml tank if I have to fill up after using 1ml ya know...

Or...bottom coils and wicking like with the Kanger T3's...

Also - these are a good investment for checking ohms. Has 510 and KR8 threads and you might also get a 510 to eGo adapter - that sits on mine all the time....


Cartomizer and Atomizer Ohm Meter

510 Battery to eGo Atomizer Adapter

 

[mainevaper]

Thanks for the tip. I'm prolly just gonna stick to my trusty multimeter and save the $20 to buy some t3's =D

Seems these t3's are kinda rare? I've only found a couple places that carry them. And only with 2.4ohm heads. Will these be sufficient with my standard ego batts?

Another difference I noticed with my novas... The 2.8's seem to have one big wick, and the 1.8's have 4smaller wicks, is it supposed to be that way?

 

[Kent C]

I missed your 'old multi-meter' post - yep that will do it - center post and outside ring around center post....

Kanger T3's and aka Tabac BCC's so some vendors label differently.

Heaven gifts has them in 5 packs for a good price but with shipping it helps if you have a bigger order there. Good Prophets have them listed under 'new items' so a bit difficult to find unless you do a search on the site. But:

eGo 3ml Tabac BCC (Bottom Coil Changeable) Clearomizer

Their defaults are 1.8Ω which imo, is much better than the 2.4/2.5 coils. My lightest flavor does well at 2.2Ω and the 1.5 is, for me, only good for expresso - too hot for even tobacco flavor which does really good at 1.8Ω. My last order from them was 2 days from Pa to Oh but more usual is 3 days.

The wicking on the T3 is 2 short wicks sticking out just past one of the seals - bottom coil/wicking and I believe there are two 'flavor wicks' and two coil wicks... unseen unless you take it apart.

 

[mainevaper]

Disregard... I figured it out..

 

[wyojoe]

So I just cleaned one of the 2.8 heads. Looking down, it was all gunked up w thick black nastiness. I was able to pull the wick out enough to gently caress most of the gunk away under hot water.
I have a couple questions...
1) what causes the gunk? Flavorings? Pg/VG ratio? It wasn't used for more than 4ml before I cleaned it. I assume this is the carmalizing I have read about?
2)My 1.8 head has done the same thing, but I can't pull the wick out, without forcing the coil.
Will a dry burn help free the wick? Or further ruin it?

Really starting to think about the kanger, but it has a wick as well, could this be a problem with the kanger as well?

I may end up just sticking with the original tank setup that came with my ego at this rate...

1. yes, a kind of carmelization, no matter what fluid you use.
2. I never pull the wicks out, so I don't know if it would help or not, but dry burning is the ONLY way you can clean a coil to get it back to the clean original condition.

 

[Blurgas]

Ya, dry burning is easy, and there's an easy way to watch the coil so you can tell when it's actually getting hot: take the silicone+metal cap off of the atty head, screw the head back onto the base piece and attach that to your battery
The resistance of the atty head also makes a big difference in how long you can run power through the coil. A 1.8 you'll have to be careful because the heat can build up rather fast, which can break the coil

As for pulling the wicks out, should probably watch a few vids on rebuilding Nova atty heads just in case you yank the coil out

 

[mainevaper]

Thanks guys!
I figured out the dry burn thing by watching some youtube videos... exactly as I thought it should be done. Guess I lucked out pulling the wick, cuz it still works!
The question is... What causes this carmalizing? It happened in 4ml of juice. I make my own juice, and mix it 70/30 vg/pg. I'm pretty sure I used to much flavoring in my last batch, but its not "dark". its only just a shade darker than clean tap water.
So... Is it too much vg? Too low/high a voltage? too much flavoring? Or all the above?

 

[Bamafan]

I was going to buy one of the ohm checkers but when I finally dug out my meter there is no need.

 

[wyojoe]

Ya, dry burning is easy, and there's an easy way to watch the coil so you can tell when it's actually getting hot: take the silicone+metal cap off of the atty head, screw the head back onto the base piece and attach that to your battery
The resistance of the atty head also makes a big difference in how long you can run power through the coil. A 1.8 you'll have to be careful because the heat can build up rather fast, which can break the coil

As for pulling the wicks out, should probably watch a few vids on rebuilding Nova atty heads just in case you yank the coil out

So far I have not tried rebuilding heads, so have no wire and so on, for doing that.

Just a side note. I don't know why I did not think of this sooner, but you can screw the atty head right on the battery if it has a 510 thread so you don't need to screw it back on the base, this makes it even easier to do the dry burn.

UPDATE: The coil assmly will only screw into my 510 to 510 extension, it will not screw directly to the battery, so you WILL need to first screw the coil assmly to the base piece first then to the battery connector.

 

[wyojoe]

Thanks guys!
I figured out the dry burn thing by watching some youtube videos... exactly as I thought it should be done. Guess I lucked out pulling the wick, cuz it still works!
The question is... What causes this carmalizing? It happened in 4ml of juice. I make my own juice, and mix it 70/30 vg/pg. I'm pretty sure I used to much flavoring in my last batch, but its not "dark". its only just a shade darker than clean tap water.
So... Is it too much vg? Too low/high a voltage? too much flavoring? Or all the above?

Some different ratios of pg/vg or different flavorings will gunk up the coil quicker that some others, but they will all gunk the coil sooner of latter. Don't know about voltage, I would think that higher volts would be hotter and therefor overheat the juice quicker? The hot coil is what burns the liquid and causes it to form the gunk. Try a experiment with a piece of foil on a burner and heat it up, then drip some e-liquid on it and see what happens. (CAUTION) Don't burn yourself.LOL

 

[mainevaper]

Ya, I'm learning the subtle differences in pg/VG ratios now. I mixed up some 50/50 last night and it seems to have solved the wicking issues I was having. Also seems to have cut down on the sweetness of the juice.
Guess I just gotta keep messing with my mixtures.