Evolv-ing Thread

[BillW50]

It is very easy not to exceed a given temperature by wattage mode only. For example when I am working on an atty, I'll usually have the mod live while I am working on it (although I am not normally firing). But I dial the wattage all the way down. Don't quote me, but I believe DNAs are 0.5v minimum and can't go lower than that. For a 0.1Ω coil, that is only 2.5 watts. Even with 32g wire, you're never even going to reach 400°F. It just won't happen. You will need more power to do so.

You can calculate what temperature for a given coil(s) at a given wattage by using Steam-Engine. For vaping temperatures, you want to be somewhere between 120 and 350 mW/mm². This stuff isn't really that hard. And your wicks and juice are in no danger if you are not supplying enough wattage to get the temperature high enough to do so. No, I am not saying wattage only mode is perfectly safe or anything. Although there is very little danger if you use your head a little.

Now another and better way and the way we are familiar with is by regulating by live TC resistance. But to do it right, I would guess you would need to read resistance better than 100µΩ. In the past, that would have cost thousands of dollars to read resistance that well. But I guess Evolv cracked the cost factor and brought down the cost.

 

[SlickWilly]

REPLAY essentially works off of duplicating the "live ohm" curve of your seed puff.

That "seed puff" can come from either TC mode or wattage mode.

If you care about max temp, then you should use TC mode for the seed puff, as that is the only way you will have any confidence you arent exceeding max. While it may sound redundant, it really isnt. We have all seen builds that would go wonkers in TC mode but REPLAY smooths that out.

The reason you need TC wire, and reason it doesnt care what kind if you seed from wattage mode, is that it still needs to have enough of a resistance change to track the change in LIVE ohms during the puff. Non TC wire doesnt have enough resistance delta.

So, once you capture a seed puff, it then try to duplicate the LIVE ohms trace of that puff, which gives great repeatability, BUT no temperature protection unless the SEED was obtain from TC mode. If the seed came from wattage mode then you have ZERO clue what the temps are because REPLAY has no clue what the TCR is, it is simply looking at the LIVE ohm change.

TBH, I see Evolv moving away from TC and promoting REPLAY, which unfortunately leaves us with no clue what temps we are actually running. It is a response to the market, the vast majority of folks love the quality of a DNA but most dont run in TC mode.

I hope they keep escribe or something like it so we can see what the temps are reaching, at least that way we (hopefully) can capture a seed under the temps we are looking for.

Mike, is there a way to keep have a screen showing the charge status while on a charger with the C's or are they now just using the LED's? I can't find a way to make the charging show.

 

[awsum140]

Willie, you asked that before and I've been thinking about it, for what that's worth. I'm not sure it's available in Escribe, haven't really looked to be honest, but it would also need to be enabled in the theme for it to appear I believe. I went the easy route and bought a USB volt/ammeter that also calculates watt hours and total time. Works even with the plain, old, DNAs as wells as the Cs and provides a lot more information.

https://www.amazon.com/gp/product/B01D9Y6ZFW/ref=oh_aui_detailpage_o09_s00?ie=UTF8&psc=1

 

[BillW50]

Mike, is there a way to keep have a screen showing the charge status while on a charger with the C's or are they now just using the LED's? I can't find a way to make the charging show.

Oh yeah... I meant to tell you about the update about what I told you earlier that I thought it was there. I did later open EScribe and had a DNA75C connected to it and looked for a stay on charging screen. Well I guess you already knew, but it isn't there and the LED is all you have to work with.

 

[SlickWilly]

It is very easy not to exceed a given temperature by wattage mode only. For example when I am working on an atty, I'll usually have the mod live while I am working on it (although I am not normally firing). But I dial the wattage all the way down. Don't quote me, but I believe DNAs are 0.5v minimum and can't go lower than that. For a 0.1Ω coil, that is only 2.5 watts. Even with 32g wire, you're never even going to reach 400°F. It just won't happen. You will need more power to do so.

You can calculate what temperature for a given coil(s) at a given wattage by using Steam-Engine. For vaping temperatures, you want to be somewhere between 120 and 350 mW/mm². This stuff isn't really that hard. And your wicks and juice are in no danger if you are not supplying enough wattage to get the temperature high enough to do so. No, I am not saying wattage only mode is perfectly safe or anything. Although there is very little danger if you use your head a little.

Now another and better way and the way we are familiar with is by regulating by live TC resistance. But to do it right, I would guess you would need to read resistance better than 100µΩ. In the past, that would have cost thousands of dollars to read resistance that well. But I guess Evolv cracked the cost factor and brought down the cost.

My wife has been telling me for years "You use your head a little". It just dawned on me that's not a compliment. But I guess that means she's been right all along. I'm gonna go give her a piece of my mind.. oh, wait...

 

[SlickWilly]

Willie, you asked that before and I've been thinking about it, for what that's worth. I'm not sure it's available in Escribe, haven't really looked to be honest, but it would also need to be enabled in the theme for it to appear I believe. I went the easy route and bought a USB volt/ammeter that also calculates watt hours and total time. Works even with the plain, old, DNAs as wells as the Cs and provides a lot more information.

https://www.amazon.com/gp/product/B01D9Y6ZFW/ref=oh_aui_detailpage_o09_s00?ie=UTF8&psc=1

Ugh, you know I have one of those and didn't even think about using it... There I go using a little of my mind again.

Oh yeah... I meant to tell you about the update about what I told you earlier that I thought it was there. I did later open EScribe and had a DNA75C connected to it and looked for a stay on charging screen. Well I guess you already knew, but it isn't there and the LED is all you have to work with.

That's what I was afraid of, I can use a piece of clear plastic to make a piece to act as a fiber optic and mount it in the front of the mod, it's not that hard to pop the board back out and make a hole for it. But that will be later down the road, in the mean time I can use the usb meter like awsum linked, it does work well.

ETA: Just happen to think, maybe I can make a clear plastic fire button, that would pull the led light right through it.

 

[BillW50]

ETA: Just happen to think, maybe I can make a clear plastic fire button, that would pull the led light right through it.

I was playing with DNA75C/250C charging and the screen just 6 hours ago and the power got knockout again until now. Sure is odd watching vapor from a flashlight. That is like twice this month. Now I am thinking about buying a backup generator.

Anyway I ran into Frank's Theme awhile back and installed it on all of my C's. And one screen has the battery and USB info on one screen. Just perfect when charging. I am sure other themes are similar. But even when charging, any key press will turn the display back on, even on that screen if you left it there. And I don't see that as a bad deal at all. One tiny tap and there it all is. And that isn't good enough for you? Gee I think it will be fine with me if I ever charge internally. I am glad I don't especially during all of these blackouts.

 

[tiburonfirst]

 

[mikepetro]

 

[cigatron]

TBH, I see Evolv moving away from TC and promoting REPLAY, which unfortunately leaves us with no clue what temps we are actually running. It is a response to the market, the vast majority of folks love the quality of a DNA but most dont run in TC mode

I couldn't agree more and moving to "Replay Only" mods would reduce/eliminate liability law suits. As it is many TC vapers think that merely using a TC wire, a "matching" Curve and setting cold res means they are vaping at their set temp. I have not seen documentation from Evolv that states otherwise. No warnings that our coil temps can easily/likely be off 50°f when using crappy 316L SS wire either. IMO they had to do something to cover their ***.

 

[mikepetro]

TC was great idea and I still swear by it. It gave us repeatability and (if you knew what you were doing) a measure of safety from over cooking juices without knowing it.

Replay is another great idea, but for different reasons. It nails repeatability better and it doesnt require as much of a techy learning curve. What Replay doesnt give is that temperature safety warm fuzzy. If you use a 490f puff as a seed, then thats what gets replayed.

 

[cigatron]

Replay is another great idea, but for different reasons. It nails repeatability better

Does it? It uses the same max res reference to prevent overtemping. Does the whole TFR (temperature coefficient of resistance) algorithm thing impede the production of a smooth and consistent tc vape? Not in my experience but I haven't tried replay yet. Damn, I guess I'm gonna have to build my two 75C mods. Get ready for a crap-tonne of questions.

it doesnt require as much of a techy learning curve

Agreed

What Replay doesnt give is that temperature safety warm fuzzy.

Agreed

If you use a 490f puff as a seed, then thats what gets replayed.

Agreed, no warm fuzzy there.

 

[BillW50]

If you use a 490f puff as a seed, then thats what gets replayed.

Agreed, no warm fuzzy there.

If that is what they normally dial in on TC, that is what they will use in Replay to reproduce.

 

[cigatron]

If that is what they normally dial in on TC, that is what they will use in Replay to reproduce.

And thus the issue, not a good thing.

 

[BillW50]

And thus the issue, not a good thing.

Wasn't good how they set TC either. But luckily they can't dial in above 600°F.

 

[cigatron]

Wasn't good how they set TC either. But luckily they can't dial in above 600°F.

On come on Bill, no one can vape at 600°f, much less 500. Man, I can't vape above 500°f, way too hot for me. But that's with a dailed in res so I know I'm at least the ball park. Anyway I get what you're say'n.

 

[SlickWilly]

Never mind...

 

[BillW50]

FYI Lost Vape Mirage DNA75C (Ends Today!) $89.01 - VAPE DEALS: Vaping | Vape Mods | E Liquid | Ecigs

I think it ends 6/18/2018 in China. As coupon code 3ADBF10 is already expired. Although it was a good try though.

 

[SlickWilly]

Made a new clear plastic fire button, it has solved the problem, now I can see the LED's through the button while the 75C is charging.

Told you this one was ugly... Almost didn't post a pic, didn't want anyone to see it. But it's meant to be functional, not win any prizes for pretty, the next one will be better.

 

[awsum140]

Functional is good, Willie. Looks fine to me and if you're happy vaping it, so much the better. I know I would be!