My thoughts about sub-ohm and latest VV/VW devices...

[rusirius]

there's no real conflict between the the 4 pdf's as any water would have evaporated in the 3 you mention especially
if the solvent had a large evaporation rate relative to water.

You win...

Seriously, I'm not trying to be an .... but I'm just not exactly sure what you're trying to do here. It seems that you just try to contradict everything I state even when I've time and time again given evidence and even backed up the things that I've said with real world examples. It's starting to feel like I'm trying to explain the difference between leptons and bosons to my 7 year old.

Even in your prior post you state that PG and VG are anhydrous. The very term anhydrous is defined as a substance that contains no water. Yet earlier in a previous post you insisted that PG and VG contain lots of water and it's in fact this that creates the "steam". "Anhydrous" is not a term that states an action. Like saying Methanol is hygroscopic. (Meaning it absorbs water). Rather it is a description. i.e. anhydrous ammonia is ammonia that contains no water. anhydrous vegetable glycerin is vegetable glycerin which "contains no water".

Anyway, the point is, if it's a game you're playing, then you win... I give up...

 

[JeremyR]

Really with vv/vw your only limited by the mods amp limit. Gauge mostly plays a role in heat up time at the specific wattage.

Just a general FYI-
I have never popped 32g in 2 years... at 6v up to 24w never had any problem. Great clouds and flavor

 

[rusirius]

On a completely unrelated side note... well, not really but sorta....

Dr G! Calling Dr G!!!

Since you have a DNA40 device... Could you do me a favor? Can you wrap a large surface area build and let me know what the performance is of it? I'm thinking something like 30awg on a 2.5mm mandrel, 18 or 19 wraps on each coil, dual coil...

What I'm curious is what kinda of lag you do or don't see from the DNA40 given a larger build like this. Do you still see a practically instant heat up and vapor production?

 

[skoony]

my bad,i meant hygroscopic,helps your twinkies stay moist.

 

[dr g]

On a completely unrelated side note... well, not really but sorta....

Dr G! Calling Dr G!!!

Since you have a DNA40 device... Could you do me a favor? Can you wrap a large surface area build and let me know what the performance is of it? I'm thinking something like 30awg on a 2.5mm mandrel, 18 or 19 wraps on each coil, dual coil...

What I'm curious is what kinda of lag you do or don't see from the DNA40 given a larger build like this. Do you still see a practically instant heat up and vapor production?

Well one thing to keep in mind is 40w is still 40w. So the max heating you will see from the mod is 40w, and if you have a build that can absorb 40w for more than 1 second, then preheat is really not doing anything the mod would not do if it just fired at a straight 40w.

My builds have been generally in the 3-4mm mandrel, 10-12 wrap range. I did do some dual coils, yes there is still some lag but it's nice to be assured that it's about the very lowest lag the mod can deliver at any time. That and once you get some heat in the atty and coils, the temp regulation keeps things from getting overheated.

Or to come at it from the reverse angle ... traditionally with mechs with huge coils people would fire the coils with the mod up to their ears to listen to the crackle so they know when the coils are hot. That is the human equivalent of what the temperature chip does, were you to fire the mod before taking a draw. The difference is you could do it indefinitely before, after, between, or at any time with the temperature control chip.

 

[Katya]

As far as I understand, having never used one, the DNA40 behaves like a closed-loop system, in that you can set a target temp and it will adjust the power to maintain that temp. The current VV/VW systems are open loop, and the only way to compare them to a cruise control is a very crude one, like pushing the accelerator down a certain amount and then locking it in place. It won't account for undulations in the road, headwinds or tailwinds, and has no idea if the vehicle goes faster or slower, it is running blind. The DNA40 though is very much like a cruise control because it puts power into the coil and then measures the coil temp and adjusts the power to reach and maintain the target temp. That is what sets it apart from the others and could change the whole vaping game IMO.

Right! Cruise control it is. Now I get it.

So the Ohm's law can't be defied, after all.



Error message Temperature protection:

The heating coil reached the maximum allowed temperature during the puff. If this happens, the DNA 40 will continue to fire, but will not be able to provide the desired wattage.

 

[Ian444]

Katya, I thought it was you who came up with the cruise control analogy? I like it.

 

[Katya]

Katya, I thought it was you who came up with the cruise control analogy? I like it.

Nope. It was our friend K_Tech who was trying to help me understand the concept of temperature control.

http://www.e-cigarette-forum.com/fo...ohm-latest-vv-vw-devices-14.html#post14357728

I'm not that clever. But I can learn.

Thank you all for the great discussion, BTW.

 

[MattB101]

On a completely unrelated side note... well, not really but sorta....

Dr G! Calling Dr G!!!

Since you have a DNA40 device... Could you do me a favor? Can you wrap a large surface area build and let me know what the performance is of it? I'm thinking something like 30awg on a 2.5mm mandrel, 18 or 19 wraps on each coil, dual coil...

What I'm curious is what kinda of lag you do or don't see from the DNA40 given a larger build like this. Do you still see a practically instant heat up and vapor production?

I'd be curious to know myself.

Sent while presently sitting on my .... watching mind numbing prattle on the TV. 257 Channels and nothing on.

 

[MattB101]

Well one thing to keep in mind is 40w is still 40w. So the max heating you will see from the mod is 40w, and if you have a build that can absorb 40w for more than 1 second, then preheat is really not doing anything the mod would not do if it just fired at a straight 40w.

My builds have been generally in the 3-4mm mandrel, 10-12 wrap range. I did do some dual coils, yes there is still some lag but it's nice to be assured that it's about the very lowest lag the mod can deliver at any time. That and once you get some heat in the atty and coils, the temp regulation keeps things from getting overheated.

Or to come at it from the reverse angle ... traditionally with mechs with huge coils people would fire the coils with the mod up to their ears to listen to the crackle so they know when the coils are hot. That is the human equivalent of what the temperature chip does, were you to fire the mod before taking a draw. The difference is you could do it indefinitely before, after, between, or at any time with the temperature control chip.

Except the DNA40 would drop the voltage back down once it reaches temperature to preserve the coil and avoid burning the juice.

Sent while presently sitting on my .... watching mind numbing prattle on the TV. 257 Channels and nothing on.

 

[rusirius]

Well one thing to keep in mind is 40w is still 40w. So the max heating you will see from the mod is 40w, and if you have a build that can absorb 40w for more than 1 second, then preheat is really not doing anything the mod would not do if it just fired at a straight 40w.

My builds have been generally in the 3-4mm mandrel, 10-12 wrap range. I did do some dual coils, yes there is still some lag but it's nice to be assured that it's about the very lowest lag the mod can deliver at any time. That and once you get some heat in the atty and coils, the temp regulation keeps things from getting overheated.

Or to come at it from the reverse angle ... traditionally with mechs with huge coils people would fire the coils with the mod up to their ears to listen to the crackle so they know when the coils are hot. That is the human equivalent of what the temperature chip does, were you to fire the mod before taking a draw. The difference is you could do it indefinitely before, after, between, or at any time with the temperature control chip.

Gotcha... The reason I asked was because I thought that might be the case. While I have convinced myself that this is definitely a step in the right direction, I'm just not site I could find myself totally happy with only 40 watts. I think I'd always be waiting I had more, especially with the preheat part.

However, I just found out the within the next 2 months yihi is supposedly releasing the SX350 v250 that features the same temperature limiting the dna40 uses but instead offers a stupid ridiculous 250 watts.

Would I ever vape at anything over 100 watts? Not likely. But for the preheat portion on big coils I can definitely see it being very nice.

Anyone else know any details on it?

 

[dr g]

Gotcha... The reason I asked was because I thought that might be the case. While I have convinced myself that this is definitely a step in the right direction, I'm just not site I could find myself totally happy with only 40 watts. I think I'd always be waiting I had more, especially with the preheat part.

Don't assume anything until you try it. The maximum wattage is only a tiny, tiny part of what this new technology brings. One thing temp control brings is the ability to take indefinite draws. If you are interested in maximum vapor production, you can vape as much as your lungs can handle. Vape a whole tank dry without ever "lifting throttle".

However, I just found out the within the next 2 months yihi is supposedly releasing the SX350 v250 that features the same temperature limiting the dna40 uses but instead offers a stupid ridiculous 250 watts.

Would I ever vape at anything over 100 watts? Not likely. But for the preheat portion on big coils I can definitely see it being very nice.

Anyone else know any details on it?

That is a joke, doesn't even exist. It's intended to get people to do exactly what you are doing, think that "something better" is coming so you don't buy the actual revolutionary product. Truth is YiHi's technology doesn't even compete with Evolv's non-temperature DNA technology, the temperature stuff is a quantum leap above that, so YiHi's several steps behind now. Notice how they crammed just about everything they could think of into that "announcement"?

China is known to do this, they make up some fake device with specifications they claim are better than whatever just came out, when it doesn't actually exist. Then they try to copy whatever it is that came out.

 

[MattB101]

I do like YiHi's board but have to agree. Also who in their right mind would vape something at 250 watts?!?

Sent while presently sitting on my .... watching mind numbing prattle on the TV. 257 Channels and nothing on.

 

[Ryedan]

Anyone else know any details on it?

You've probably already seen it, but just in case; YiHi SX350 V250 new chip News.

 

[Rossum]

That is a joke, doesn't even exist. It's intended to get people to do exactly what you are doing, think that "something better" is coming so you don't buy the actual revolutionary product. Truth is YiHi's technology doesn't even compete with Evolv's non-temperature DNA technology, the temperature stuff is a quantum leap above that, so YiHi's several steps behind now. Notice how they crammed just about everything they could think of into that "announcement"?

Including Bluetooth!

 

[Ryedan]

Including Bluetooth!

I know! And a 2.8" screen if I remember correctly ... Hmm, I wonder if it runs a browser

 

[Rossum]

Why not throw in a GSM chip too; with batteries capable of providing 250 watts of vape power, the talk time should be unbeatable.

 

[Ed_C]

Now if they offered something where it would beep when I lose it behind the sofa, they'd be onto something!

 

[Katya]

Now if they offered something where it would beep when I lose it behind the sofa, they'd be onto something!

You know how to whistle? Just put your lips together...

$1.98 Mini Key Finder Locator with Red LED Light and Deep Sound - with keychain at FastTech - Worldwide Free Shipping

 

[Aal_]

If you have temp control, 250W or even 1000 watts is not a bad thing.