standard ego 1000mAh with 2.4ohm?

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huysus

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Oct 29, 2012
40
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Texas
I have a noob question as well. Just ordered my first mods, two with VV. The tank carts I got are rated at 1.5 ohm, and are dual coil. So I guess what I'm unsure about is whether having dual coils will factor into the voltage question or if following the elementary expressions of Ohm's law is enough, taking the 1.5 ohm rating as the equivalent load impedance. The reason I ask is because I heard someone say that dual coils makes calculating the requisite voltage more complicated.

I have never used a dual coil cart but I think it's just two 3-ohm coils wired in parallel. You can use the ohm's law on the 1.5 ohm equivalent. But keep in mind that each coil is now only getting half the power you calculate. And half may not be enough to adequately vaporize the juice. So you have to crank up the voltage.

I found this out by wiring a dual coil into a Vivi Nova and had to crank up the provari to produce 14 watts! It went from very little vapor to nuclear throat hit very fast.
 

vander

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Oct 21, 2012
21
3
alberta
not to hijack this thread but I was wondering about this as well, running the twist with a 1.8 @ about 3.4/3.6 max go any higher i start getting the "burnt" taste

thanks for the replies

i'm the same with my twists. i usually am rocking SR clearos between 3.4-3.6v, but im starting to think i'm in the minority of liking cooler vapes
 

Flameing

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Nov 29, 2012
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I have a noob question as well. Just ordered my first mods, two with VV. The tank carts I got are rated at 1.5 ohm, and are dual coil. So I guess what I'm unsure about is whether having dual coils will factor into the voltage question or if following the elementary expressions of Ohm's law is enough, taking the 1.5 ohm rating as the equivalent load impedance. The reason I ask is because I heard someone say that dual coils makes calculating the requisite voltage more complicated.
And if all the formulas and figuring aren't enough to complicate it enough for you, alot of vv mods have a self protection wired into them that cut the voltage back to under four if you use a dual coil. They see the decreased resistance of two coils in parallell as a partial short.... so they cut back the power for you. Even a Provari has this built in. Now.... I was considering dual coils myself, and went hunting for mods that had more cahonies to put out six volts into lower resistances (like a vv gripper) but, after further research, found that the reason they can claim to do this, is because they use pulse width modulation to give you the variable voltage. To explain that as simply as possible... they always put out six volts, no matter what you set the voltage at... they just put it out in varying lengths of pulses. So... at say around three volts, it will "turn on and off" like say somewhere around a thousand times a second, giving you an "average" voltage of three going between zero and six volts. When you turn it up, it just stays on for longer spurts, bringing the "average" voltage up. On the test bench, under a LR load, it still will cut back by giving a faster pulse rate. But does it still give you six volts? Sure.... it NEVER gives less than six volts by design. Could you exploit that design to effectivly mislead the public without lying? Sure, and they do. They do a little better than most, but not as well as you would think. Bottom line? "I" decided to give it up for now. I'm satisfied with my vape. Quitting the quest to make it more difficult right now will leave more money to spend when the technology gets up to speed with the dual coil cartos and tanks.
 

tickerpop

Full Member
May 30, 2011
5
1
Closet
not to hijack this thread but I was wondering about this as well, running the twist with a 1.8 @ about 3.4/3.6 max go any higher i start getting the "burnt" taste

thanks for the replies

I get the same thing with mine. I'm using the 1.8 as it was suggested for my Ego VV, and I noticed anything above 4.0v and it's burnt. I'm just curious if maybe going to dual coil would help.
 

Nickel City Nomad

Full Member
Nov 20, 2012
22
10
buffalo,ny
I get the same thing with mine. I'm using the 1.8 as it was suggested for my Ego VV, and I noticed anything above 4.0v and it's burnt. I'm just curious if maybe going to dual coil would help.

I'd try a 2 or 2.4, Maybe even a 2.4 to a 3 ohm single coil first if you really want to run higher voltage. Higher resistance coils just require higher voltage to attain the same wire temp, that's all. But.... different juices taste better at different temps..... and, jacking up the voltage on a lower resistance coil will shorten it's life. I've found a 2.8 ohm coil suffices all my needs. Able to take the full 4.8 volts on my spinner without burning out the coil, yet enough resistance to not overheat at 3.3 volts with the juices that taste good cooler.
 

lulu836

Jambalya, crawfish pie, 'da filé gumbo
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May 1, 2011
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Shreveport
And if all the formulas and figuring aren't enough to complicate it enough for you, alot of vv mods have a self protection wired into them that cut the voltage back to under four if you use a dual coil. They see the decreased resistance of two coils in parallell as a partial short.... so they cut back the power for you. Even a Provari has this built in. Now.... I was considering dual coils myself, and went hunting for mods that had more cahonies to put out six volts into lower resistances (like a vv gripper) but, after further research, found that the reason they can claim to do this, is because they use pulse width modulation to give you the variable voltage. To explain that as simply as possible... they always put out six volts, no matter what you set the voltage at... they just put it out in varying lengths of pulses. So... at say around three volts, it will "turn on and off" like say somewhere around a thousand times a second, giving you an "average" voltage of three going between zero and six volts. When you turn it up, it just stays on for longer spurts, bringing the "average" voltage up. On the test bench, under a LR load, it still will cut back by giving a faster pulse rate. But does it still give you six volts? Sure.... it NEVER gives less than six volts by design. Could you exploit that design to effectivly mislead the public without lying? Sure, and they do. They do a little better than most, but not as well as you would think. Bottom line? "I" decided to give it up for now. I'm satisfied with my vape. Quitting the quest to make it more difficult right now will leave more money to spend when the technology gets up to speed with the dual coil cartos and tanks.

Could you please cite specific references to this hypothesis? Thanks
 

Nickel City Nomad

Full Member
Nov 20, 2012
22
10
buffalo,ny
Could you please cite specific references to this hypothesis? Thanks

Well...... that's what pulse width modulation is. Not a hypothesis .... it's been around for a long time, nothing new. Ever use a dimmer switch on room lights? Pulse width modulation, not variable resistors (rhetostat). Look it up on Wikipedia for a description in laymans terms. Pete Busardo also reviews the gripper, and shows you the scoped output of a VV Gripper.
 
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