Very simple and helped me.
http://www.youtube.com/watch?v=75V9y0qxHCU&feature=youtube_gdata_player
http://www.youtube.com/watch?v=75V9y0qxHCU&feature=youtube_gdata_player
A video every new vapor should watch on ohm and voltage
- Thread starter bentandshallow
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Thanks for sharing this! It's somewhat helpful, but not what I was expecting, which was a video about electrical theory, and how it applies to vaping. 
I was hoping to figure out why somebody would want to run a 2.5ohm setup over, say, a 1.8. What's the difference? The videos I've seen suggest that much the same effect is produced by either by varying the voltage, so why aren't they all one standard? Then we wouldn't need vv to be happy--I must be missing something here.
Is there more coil to the higher ohm ones, producing more vapor when driven properly? Makes some sense to me, but I haven't really heard that anywhere, and the videos show them all looking about the same.
Is there more coil to the higher ohm ones, producing more vapor when driven properly? Makes some sense to me, but I haven't really heard that anywhere, and the videos show them all looking about the same.
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Reaperman, I am in the same boat as you. From my understanding higher ohms or resistance = more flavor and vapor, which is why I don't get why everyone wouldn't go for a high ohm setup?
You need power to drive ohms--I use 7.4v with a 2.5 ohm atty to make +10 watts.
That's what the videos all say, and I *think* I understand that, but why do we want to drive extra ohms?
Is it providing something like more flavor/vapor?
Is it about device longevity?
Or is it just about less efficiency in coils?
Really I don't know. I don't have vv gear yet (in the mail). I'm getting it because I think I'm overdriving my low ohm gear with newly charged batteries (would it have killed them to put a potentiometer on them?). The mod is coming with 2.5 ohm stuff, which I know my current batteries can't drive right and it will. Maybe it will be instantly obvious in a few days why, but my low ohm stuff already puts out more vapor than my lungs can deal with as is.
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Very good question.
Basically the higher ohm coil allows you a wider voltage range for fine tuning to your particular tastes than what you would have with the lower ohm coil. For example, if a person wants a really hot vaping experence (high watts), they will exceed the amperage limit of many PV's before they get to their desired wattage with a low ohm coil.
This is also why you will see a lot of the guys using Gennies & RBA's with very low resistance coils switching over to mechanical mods and high drain batteries instead of using PV's with a lot of electronics. Scroll through this thread and you will see most of the Gennies on mechanical mods made for this reason. http://www.e-cigarette-forum.com/forum/new-members-forum/225727-pictures-your-setup.html
The irony is that most of the $300+ PV's are fully mechanical with no advanced electronics in them at all.
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By the replies in this thread, I'm guessing it's really not such a helpful video. It's real simple in the way I tell my Three year old that she should eat her vegetables because it makes her grow up strong is simple. She's not ready for the food pyramid yet, but I'm guessing the majority of vapors have a mental level above a three year old, and can at least be given mention of Power being the factor that determines Voltage and Resistance matching.
Ohm's Law is fairly simple math and understanding that It's power (watts) that is ultimately what gets you into the sweet spot is the simple way to understand it.
That being said his ranges actually we're not even consistent Power wise, ranging from 6.4W to 10.4W for the 1.7ohm up to 8.3W to 12.0W for the 3.0ohm. I'm guessing that's because many of the High voltage PV's out there don't actually supply the voltage they advertise.
I'd also say it's a bit silly to make such general statements when the power settings may be different for different juices. The Minis I started with put out 3.4V and sell with 2.6ohm and 3.5ohm cartos, that's 4.4W and 3.3W, way out of his suggested ranges. The flavor as I remember it sucked, but it was powerful. Now I didn't try any of those flavors up as 12W, but I'm guessing they'd taste like crap.
It would at least better to point out that his suggestions are a good starting point (although I'm guessing that by the time someone buys a 6V device they have a bit of experience).
Ohm's Law is fairly simple math and understanding that It's power (watts) that is ultimately what gets you into the sweet spot is the simple way to understand it.
That being said his ranges actually we're not even consistent Power wise, ranging from 6.4W to 10.4W for the 1.7ohm up to 8.3W to 12.0W for the 3.0ohm. I'm guessing that's because many of the High voltage PV's out there don't actually supply the voltage they advertise.
I'd also say it's a bit silly to make such general statements when the power settings may be different for different juices. The Minis I started with put out 3.4V and sell with 2.6ohm and 3.5ohm cartos, that's 4.4W and 3.3W, way out of his suggested ranges. The flavor as I remember it sucked, but it was powerful. Now I didn't try any of those flavors up as 12W, but I'm guessing they'd taste like crap.
It would at least better to point out that his suggestions are a good starting point (although I'm guessing that by the time someone buys a 6V device they have a bit of experience).
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