Voltage difference between bifferent PVs

[FocusTorn]

So why is it that on my friends VMax, she is running 5.5 volts with a Single 3 ohm carto giving ~10.08 watts to the coil tastes and hits fenominal, but my twist(which I still cant get dialed in) running a 2 ohm single coil carto with anything over 3.5 volts tastes and smells burned.

I would think that

5.5*5.5 / 3 = 10.08
4.4*4.4 / 2 = 9.68

Those two should be a comparable experience.

My piddly 3.4 or so

3.4*3.4 / 2 = 5.78

is not hot, low TH, but tastes good.

I was under the understanding that a watt is a watt, and comparable wattage would = comparable vaping.

Is the twist funky, am I doing something wrong or what?

Any input from the masters would be great.

 

[NGIB]

One of the experts here explained it once, I'll try to remember:

The coil on a higher resistance carto has more wire wound around the wick. The larger the surface area of the heating element the more juice can be vaporized at the same time. So the watts may be equal but the HR carto is vaporizing a higher volume of juice. Makes sense to me from a physics standpoint but I have no idea if it makes a real difference. I vape at 3.7 volts using LR systems 90% of the time.

Also, the Twist is amp limited to 2.5 max or so. Many "lighter" juices, like fruits will burn quickly at high voltage...

 

[itsadogslife]

Focustorn, I've noticed the same thing.

My friend has both a Twist and a Lavatube.
But the same Phoenix with the same liquid tastes different at the same volt setting on each of them.

The Twist tastes burnt over a 4 or so, but the lavatube tastes good on this set up all the way to 4.5 or so.

I wouldnt think it's just power because I would think the lavatube would be more powerful than the Twist.

I have no idea why this happens, but I agree that it does happen.

 

[FocusTorn]

The napkin math shows

4.5v with a 2ohm carto gives 10.125 watts at a 2.25 amp load... should rock socks, not burn filler.

5.5 with a 3ohm carto gives 10.08 at 1.83 at a 1.83 amp load... does rock socks, with out burning filler.

Granted my batt will die a hell of a lot faster, but should be equivalent vaping, or so I thought

Is the twist a load of hyped up junk?

 

[tj99959]

The difference can be as simple as the air flow through the connectors. The nice thing about a VV is you can always turn it down to where you don't get a burn't taste.

 

[FocusTorn]

That is the weird thing though... hers tastes a million times better. My orriginal little regulated ego battery tastes better. Everything seems to taste better than the twist

 

[tj99959]

That is the weird thing though... hers tastes a million times better. My orriginal little regulated ego battery tastes better. Everything seems to taste better than the twist

The twist only delivers power, and has no taste.

 

[FocusTorn]

Very true, but the power given affects the burning of the liquid, thus does have an effect on the taste. Root is still my question of why the twist acts so differently than other power supplies. Not trying to be argumentative, just very curious.

 

[tj99959]

You would need to measure the actual under load output of each device for a proper answer. Just because the meter or dial on the PV says x.x volts doesn't mean that is what you are actually delivering to the coil.

As an example on the early Vmax set at it's lowest setting it was delivering 5v.

 

[Kay1959]

I was just watching a review from PBusardo about the VMax the other day. If I remember correctly, he said that whoever set the volts on the VMax didn't do such a hot job of it, because....oh heck! just watch the video, he explains it much better than I ever could! lol!

A PBusardo Review - The V-Max by SmokTech - All About Vapor - YouTube

 

[hairball]

So why is it that on my friends VMax, she is running 5.5 volts with a Single 3 ohm carto giving ~10.08 watts to the coil tastes and hits fenominal, but my twist(which I still cant get dialed in) running a 2 ohm single coil carto with anything over 3.5 volts tastes and smells burned.

3ohm coils are better for higher voltage vaping regardless of what your figures state. I vape 3ohm at 6V.

2ohm coils are low resistance and should not be used over 3.7V. When they came out, they were designed for a 3.7V battery to simulate 5V vaping. However, if you vape a 5V device with a 3ohm carto/atty, there is a big difference between the 2.

There is one exception to this rule, dual coil cartomizers. There were designed for 5V and higher but many people like them on an eGo. Downside to this is that it stresses the mosfet swift in a proprietary battery and will cause premature death of the battery.

If using the twist or any type of variable voltage device, I recommend the 3ohm. It allows you to use all voltages safely. It also will allow you to tune into your sweet spot whereas your 2ohm won't.

 

[FocusTorn]

I found this

http://www.e-cigarette-forum.com/fo...ur-battery-temperature-preferences-excel.html

and looks as though, that along with what you said, 3ohm is what I am in need of.

So, correct me if I am wrong in thinking that a watt is a watt like what was said before, but the actual heating element is different in more than just the ohm rating and affects the juice being burned differently. So that would by why a 2ohm burns filler at the same output of a 3ohm at roughly the same wattage?

 

[SissySpike]

The VMax Uses a cheeper form of Pulse Width Modulation (PWM) the numbers are really more settings than voltage. It has no coil its just dumping raw power to you atty cart that's why it hits harder also why a voltage meter wont work on it. With out having any feed back you are potentially burning threw your attys and carts faster using a device designed this way. I have a Vmax and use it off and on but its not my favorite

 

[DaveP]

One day a designer will produce a variable ecig that allows us to control the temperature of the juice at the coil. This is where we could truly tailor the vapor to our liking.

The number of turns around the wicking in an atomizer and the variance in actual contact between the coil and the juice is critical to the quality of the vape. Variable voltage allows us to tailor the vapor to the juice and the atomizer to produce the best vape. Right now, the only two things we can control outside of the voltage or amperage is the efficiency of the atomizer we use. There are also differences in design and quality control issues of the shipped products, so one box of cartomizers may deliver a varied experience from the next at times.

The Twist has some limitations, as was mentioned above by someone else. Here's a review that measures voltage under load.

 

[FocusTorn]

Great vid, and great info about the VMax. Not being able to put it on an actualy tester due to the PWM makes it sketchy. So might be that the twist is giving a more accurate output than the VMax with that being known now. Are all large sized PVs like that or just the VMax?