DNA40 vs SX350j

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TKS

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I don't vape while sleeping or at work, and do take breaks where the mod just sits there. This is a very small price to pay for the mod to have accurate knowledge of the resistance thus resulting in solid accurate performance.

Does the DNA40 accurately calibrate baseline no matter which atty is used at all temperatures and differences between them?

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Yes if you let refinement process occur though. It's not like just slap attys one right after another and think it will instantly be ready for accurate temp controlled vaping.
 
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Vlad1

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Yes if you let refinement process occur though. It's not like just slap attys one right after another and think it will instantly be ready for accurate temp controlled vaping.
Evolv has apparently conceded their design of refinement inferior with the implementation of resistance lock in later revisions to match what other manufactures in the industry did from the beginning. There's a reason for that. Scorched burnt hits as you've stated you received with the DNA 40,
I then in actuality begins to scorch and I get burnt hits really quick
as well as other consumers complaining of scorched or anemic hits and inconsistent vapor production. You really don't see these problems being reported on a continual basis with any other device that I'm aware of other than the DNA 40.

Perhaps in their next implementation of refinement they will take into consideration the output power the user had defined and adjust for that as well so when the user picks up the device they will get the same vapor experience time after time like we see with the SXmini M. Instead of the scorched or anemic hit one may get when picking up the DNA 40 without first verifying it hadn't automatically adjusted on them and receiving that unpleasant experience:shock: which is the intent of temp limiting to begin with isn't it.
 

TKS

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@Vald1

The scorched hits were all due to my misunderstanding. The arty lock is a nonsense feature as we have all said because of the inherent inaccuracy due to changes in ambient temp. Refinement takes a little bit of time but when it's done, it's as close to temp regulation as possible and no more burnt hits. The reason the Vape isn't as warm at conservative watts and temp limit after refinement is because that's the true state of the settings you would use. The warmer vapes have to have a higher temp limit, there is no setting that is calibrated to just be at the vaporization point of something and then having airflow go right over it, of course it's gonna cool off.

Cotton is to blame as a medium of wicking because of its low flash point. I now exclusively use rayon and it is great and never see any scorching after I replace gunky coils ( the rayon has discoloration from the gunk, but it's only surface blemish, it's not the actual fibers that have anything deconstructed about them, this I can confirm when I wash the wick, it returns to pure white even at the coil area where it makes contact).
 
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Yozhik

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Cotton is to blame as a medium of wicking because of its low flash point. I now exclusively use rayon and it is great and never see any scorching after I replace gunky coils ( the rayon has discoloration from the gunk, but it's only surface blemish, it's not the actual fibers that have anything deconstructed about them, this I can confirm when I wash the wick, it returns to pure white even at the coil area where it makes contact).

Ah, so it's a feature of the DNA40, not a fault, that it scorches cotton wicks? Must be really good temp control. ;)
 

Vlad1

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Pretty obvious what's superior. Not only in specs but in consumer satisfaction as well.

Dna_Comparison.png


Good thing you like Evolv as they're like a dime a dozen right now, retailers can't get rid of them fast enough even selling them without warranty.

Do note the SXmini M is now capable of up to 150w and 10 more memory locations and another mode "Eco" with the firmware update. Specs alone make DNA 40 look like outdated equipment even if we don't consider the design problems & complaints from the consumers that bought the DNA 40 devices. Or inability to do firmware updates etc...etc..
 

JimScotty0

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Yes if you let refinement process occur though. It's not like just slap attys one right after another and think it will instantly be ready for accurate temp controlled vaping.
How much time does it need to get an accurate reading if you have a hot atty from another device and your DNA40 was also just used?
 

TKS

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Then Evolve has some great technology going for them. Too bad it doesn't work.

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It works flawlessly. What doesn't work is some people's brains and reasoning mixed with expectations. It's good that they have the arty lock feature for the impatient. The only thing Evolv doesn't make apparent is the instructions and telling people about refinement.
 

JimScotty0

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It works flawlessly. What doesn't work is some people's brains and reasoning mixed with expectations. It's good that they have the arty lock feature for the impatient. The only thing Evolv doesn't make apparent is the instructions and telling people about refinement.
My reference was about being able to just put on any atty in any heat or mod condition and it would automatically just like magic be able to set the resistance. I don't believe that statement is true.
 

TKS

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How much time does it need to get an accurate reading if you have a hot atty from another device and your DNA40 was also just used?

You can get an accurate reading almost instantly, but when you leave it for a moment, your atty might cool off fast enough where the ohm drop won't be taken into account for. I think refinement should be fairly accurate after leaving the device for 10 mins. But longer periods of time will let it read the new lowest ohm drop (usually around .02 to 0.3 in some cases drop from a recently unfired coil).

It really depends on how much overall the arty and mod are in terms of temp and how much it will be lowering when you leave it.
 

JimScotty0

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You can get an accurate reading almost instantly, but when you leave it for a moment, your atty might cool off fast enough where the ohm drop won't be taken into account for. I think refinement should be fairly accurate after leaving the device for 10 mins. But longer periods of time will let it read the new lowest ohm drop (usually around .02 to 0.3 in some cases drop from a recently unfired coil).

It really depends on how much overall the arty and mod are in terms of temp and how much it will be lowering when you leave it.
My original response was in reference to leaving the SXM at room temperature for 15 minutes and it was more or less stated that it was unreasonable to leave it for so long to wait for calibration. Now I said 15 minutes because that is more of a sure thing with all temperature conditions and environmental situations. You could do it in 5-10 mins but it may not be as accurate. So with your statement I really see no difference because the physics are the same in needing to have a known temperature of both atty and mod to have these systems produce an accurate understanding of what the actual resistance will be at. This is due to the NI200 changing resistance with the various temperatures that it may be at. Short of having an accurate temperature probe measuring the atty and the mod the process is to have them both match temperature and then it can be measured by the chip accurately. Same process for both devices except that the SXM is a manual process and the DNA40 may have an automated process.

Am I correct?
 

TKS

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My original response was in reference to leaving the SXM at room temperature for 15 minutes and it was more or less stated that it was unreasonable to leave it for so long to wait for calibration. Now I said 15 minutes because that is more of a sure thing with all temperature conditions and environmental situations. You could do it in 5-10 mins but it may not be as accurate. So with your statement I really see no difference because the physics are the same in needing to have a known temperature of both atty and mod to have these systems produce an accurate understanding of what the actual resistance will be at. This is due to the NI200 changing resistance with the various temperatures that it may be at. Short of having an accurate temperature probe measuring the atty and the mod the process is to have them both match temperature and then it can be measured by the chip accurately. Same process for both devices except that the SXM is a manual process and the DNA40 may have an automated process.

Am I correct?

Correct, though why anyone would want it done manually is beyond me, if I have the thing resting, and when it goes in idle, I'd rather have the thing constantly monitoring and "refining" instead of me having to go in and press a few buttons to get a read on, over and over until I think it's right while I am trying to vape.

Leaving it overnight while it charges and finishes seems to get me the most accurate reading for that ambient temp.
 
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JimScotty0

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Correct, though why anyone would want it done manually is beyond me, if I have the thing resting, and when it goes in idle, I'd rather have the thing constantly monitoring and "refining" instead of me having to go in and press a few buttons to get a read on, over and over until I think it's right while I am trying to vape.

Leaving it overnight while it charges and finishes seems to get me the most accurate reading for that ambient temp.
Maybe you didn't see my post last night about this subject. I just have no need to recalibrate. So there is no over and over again.
I have been using the same coil for about 10 days now changing wicks every 2-3 days and maybe 1x or 2x a day when I have let the device sit for an extended period I may set the resistance to see if there are any changes. I rarely see it go away from the .073 that it usually reads about 90% of the time. Sometimes if it is cooler or warmer than normal I might see it change to .072 or even more rare .074. Never anything more than that with my favorite coil so far using a twisted 26ga NI200 with a 30ga Kanthal A1, 3mm with 6/7 wraps on my Lemo 2 and my connections are very tight. I have had the same experience and resistance with 2 similar coils on the same Lemo 2 just prior to this current build. Now I would think with a prebuilt coil that has the wires pressed up against the pin with a rubber sleeve you might see more resistance variations but I don't see that with a build like the Lemo 2 and solid tight connections.

I vape a variety of ejuices using anything from 50/50 PG/VG to 100%VG so my temp settings do vary accordingly to give me the right warmth and flavor that I desire. My temp is usually between 385F to no more than 440F with my normal being around 400F. Today I checked the resistance in the morning and it was at .073. When I got home I re-wicked, juiced up and then after about 5 mins I checked the resistance again and it was at the same .073. I really don't see a need to recalibrate myself since I am mainly using the same atty and build. In either case, I always check after re-wicking or if I should change to another atty.

I did make about 10 of those same coils one after another with the same twisted wire so I would have a stash to use when needed. I use the same build on my Delta II and on my Kangertech Mini. The Lemo 2 seems to always give me right around the .073 but the Delta II around .079 and the Kanger Mini gives me around .059. Must be the atty's themselves having different resistances due to different metals, etc. causing a difference. Even the RBA's of the Kanger and the Delta are fairly consistent but not as rock solid that I get with the true RTA of the Lemo 2 which I tend to use the most.

I feel that as long as I calibrate the resistance with the atty attached and sitting on the SXM for at least 15 mins I will get repeatable performance and temp settings whether the device has been unused in my pocket for a while or quite cooler in the early morning sitting on my desk. As long as both the atty and mod are the same temp it all works the same for me. Now I haven't tried to do this outside in the winter or when in a very hot place such as in the open sun at the beach so I don't have experience with locking it with such extremes. But for my normal lifestyle in SoCal it works well for me.
 
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