Question for all who use a VV.

Status
Not open for further replies.

Reroka

Senior Member
ECF Veteran
Sep 16, 2013
193
102
44
Durham, North Carolina
Sup Nicohog,

love the post, thanks for all your help.

I love reading your post, you bring a lot of insight and knoweldge.




Congratulations on finding your personal sweet spot!

From your range of 3.9 to 4.2V, and assuming
your 2.5Ω heads really are 2.5Ω, it is:
3.9V squared, divided by 2.5Ω = 6.1W to
4.2V squared, divided by 2.5Ω = 7.1W

For your 1.8Ω heads, and again, assuming they
and the 2.5 really are their stated values, these
calculated wattages translate to:
SQRT(6.1W x 1.8Ω) = 3.3V to
SQRT(7.1W x 1.8Ω) = 3.6V

For your 3.7V regulated EVOD batteries, assuming
the 2.5Ω I used to calculate wattage above is
their actual value, you're looking for:
3.7V squared, divided by 7.1W = 1.9Ω to
3.7V squared, divided by 6.1W = 2.2Ω

The Kanger heads tend to err on the higher side. A 1.8Ω head often reads 1.9Ω or 2.0Ω and would be at or beyond the hot end of your sweet spot on your EVOD batteries. A true 2.2Ω head would be at the cool end, with a 2.3 - 2.4 being beyond it. In other words, your sweet spot is probably between the 1.8Ω and 2.2Ω heads on your 3.7V EVOD batteries. The VV lets you adjust for any variance in resistance.

Finally, with VV, you can just ignore all the above and adjust to taste. :D
 

The Ocelot

Psychopomp
ECF Veteran
Verified Member
Aug 12, 2012
26,497
79,193
The Clock Barrens, Fillory
Congratulations on finding your personal sweet spot!

From your range of 3.9 to 4.2V, and assuming
your 2.5Ω heads really are 2.5Ω, it is:
3.9V squared, divided by 2.5Ω = 6.1W to
4.2V squared, divided by 2.5Ω = 7.1W

For your 1.8Ω heads, and again, assuming they
and the 2.5 really are their stated values, these
calculated wattages translate to:
SQRT(6.1W x 1.8Ω) = 3.3V to
SQRT(7.1W x 1.8Ω) = 3.6V

For your 3.7V regulated EVOD batteries, assuming
the 2.5Ω I used to calculate wattage above is
their actual value, you're looking for:
3.7V squared, divided by 7.1W = 1.9Ω to
3.7V squared, divided by 6.1W = 2.2Ω

The Kanger heads tend to err on the higher side. A 1.8Ω head often reads 1.9Ω or 2.0Ω and would be at or beyond the hot end of your sweet spot on your EVOD batteries. A true 2.2Ω head would be at the cool end, with a 2.3 - 2.4 being beyond it. In other words, your sweet spot is probably between the 1.8Ω and 2.2Ω heads on your 3.7V EVOD batteries. The VV lets you adjust for any variance in resistance.

Finally, with VV, you can just ignore all the above and adjust to taste. :D

That takes up way to much brain space to think about.
 

DaveP

PV Master & Musician
ECF Veteran
May 22, 2010
16,733
42,646
Central GA
When people talk about vaping at 12 to 14 watts I tend to think they are losing efficiency somewhere, either in a bad connection or an inaccurate voltage reading. Most people like something around 6 to 7 watts. If I climb to 8, 9, or 10 watts it's just a burnt tasting vape as the voltage or wattage goes up. Maybe they are vaping high VG juice and the throat hit doesn't become significant until the wattage is high enough.

I vape 100% PG down to 70/30 and 6 to 7 watts is the sweet spot.
 

Penn

Ultra Member
ECF Veteran
May 19, 2013
1,367
1,435
In the wilderness
My taste has changed since I started. When I first started I liked unusually low watts on a top coil. I got vapor's tongue and that changed to slightly higher watts on a bottom coil or low watts on a top coil and just didn't like RDA while working through it. That was all with either unregulated egos or constant 3.6V. Now I use an MVP and I find 6.5 - 8 watts depending on the flavor with bottom coil or RDA (but still hate having to drip every few puffs) works great but I can't even use my top coils anymore.

My point - Don't lock yourself into one setup just yet. I now believe vapors tongue is sometimes just a matter of your body's tasting system changes when you quit smoking.
 
Last edited:

DaveP

PV Master & Musician
ECF Veteran
May 22, 2010
16,733
42,646
Central GA
My taste has changed since I started. When I first started I liked unusually low watts on a top coil. I got vapor's tongue and that changed to slightly higher watts on a bottom coil or low watts on a top coil and just didn't like RDA while working through it. That was all with either unregulated egos or constant 3.6V. Now I use an MVP and I find 6.5 - 8 watts depending on the flavor with bottom coil or RDA (but still hate having to drip every few puffs) works great but I can't even use my top coils anymore.

My point - Don't lock yourself into one setup just yet. I now believe vapors tongue is sometimes just a matter of your body's tasting system changes when you quit smoking.

Vivi Novas and most clearos (top coil) keep me at the low end of voltage at around 3.4v-3.6v. I'll crank up to 4.2v on a 2.5 ohm Protank or Evod sometimes. It all depends on the juice's ability to produce the taste I want. Even on a 3 ohm coil, I rarely go past 4.2v for long. It just starts putting a burnt edge on the vape.
 

suspectK

Vaping Master
ECF Veteran
Verified Member
Aug 7, 2013
4,573
2,893
Alabummer
When people talk about vaping at 12 to 14 watts I tend to think they are losing efficiency somewhere, either in a bad connection or an inaccurate voltage reading. Most people like something around 6 to 7 watts. If I climb to 8, 9, or 10 watts it's just a burnt tasting vape as the voltage or wattage goes up. Maybe they are vaping high VG juice and the throat hit doesn't become significant until the wattage is high enough.

I vape 100% PG down to 70/30 and 6 to 7 watts is the sweet spot.

I can't go below 11 Watts with dual coils. Whenever I decide to use them.. I tend to stick at 9 Watts..sometimes going down to 8 with single coils. I don't really like high PG liquids.. I can deal with 50/50 mixes..but I won't go any higher with PG than that.
 

S1LV3R

Super Member
ECF Veteran
Verified Member
May 2, 2009
838
1,208
Knoxville, TN
So today I received my vision spinner. I tried it out with my pro tank 2, I also installed a 2.5 ohm coil. I started at 3.3 volts and agent up from there. I got to about 3.9 to 4.2 volts. I found that I liked to vape at the lower voltage. I believe it some like 4 to 5 watts. Is it odd that I like to vape at that low of wattage?
Also, I did a little testing. What I found out is, the tanks that came with my 1100 may EVOD I can take a real long puff with out getting a Burt taste and I can vape on it more times than with my pro tanks. What I learned is pro tanks must like a VV system mor than a contest volt system. I am not sure if this is true or if it is the way I vape with my pro tank attached to my evod. However when the pro tank is attached to the spinner it works a hell of a lot better.

Any want to give me your opinions?

Sent from my DROID RAZR HD using Tapatalk now Free

Im in full agreeance with everyone else. Whatever works for you, do it!!

i vape 2.5ohm coils on my protanks at anywhere between 3.6-4v on my Vamo. Its the sweet spot for me. Glad you found yours.
 

degnr8

Ultra Member
ECF Veteran
Aug 29, 2009
1,281
1,311
Aberdeen,WA,U.S.A
When people talk about vaping at 12 to 14 watts I tend to think they are losing efficiency somewhere, either in a bad connection or an inaccurate voltage reading. Most people like something around 6 to 7 watts. If I climb to 8, 9, or 10 watts it's just a burnt tasting vape as the voltage or wattage goes up. Maybe they are vaping high VG juice and the throat hit doesn't become significant until the wattage is high enough.

I vape 100% PG down to 70/30 and 6 to 7 watts is the sweet spot.
There may be something to this, that huge wattage seems to be mainly with sub-ohm cloud chasers.
 

DaveP

PV Master & Musician
ECF Veteran
May 22, 2010
16,733
42,646
Central GA
I can't go below 11 Watts with dual coils. Whenever I decide to use them.. I tend to stick at 9 Watts..sometimes going down to 8 with single coils. I don't really like high PG liquids.. I can deal with 50/50 mixes..but I won't go any higher with PG than that.

With dual coils half the voltage drop is across each coil, so you can go higher and still get the same wattage across the two coils combined. Total wattage will be doubled, but the heat increase is a combination of two elements glowing at half the voltage. You also benefit from the increased contact area with the wick, which atomizes more juice for more vapor.

It's all a matter of how many coils, wire length and gauge, and whether the coils are in series or parallel, but the resistance you measure at the atty connector determines how many watts the atomizer will produce at a given voltage, so juice contact is the biggie in dual coil atties. You may be able to drive up the voltage without burning because each will affect the juice more completely due to voltage drop across each coil. Dual coil is just more efficient at contacting more juice when you fire it.

I sense virtually the same vape when I change from 1.5 ohm to 2 ohm to 2.5 ohm to 3 ohm in my VW mod. If I switch it to VV, then I have to accommodate the vape by raising and lowering the voltage to suit. I agree that dual coil atties produce a more flavorful vape with more vapor than a single coil atty. They also eat juice faster. :)
 
Last edited:
Status
Not open for further replies.

Users who are viewing this thread