Does TC settings change on different cells or as charge fades?

[Robbert]

I have a dna 75 with dual titanium coils.
I figure it's normal that temp settings change as cell discharges but not by close to 200 degrees Fahrenheit.
Ive been using Sony vct5 and set temp to 580 after putting in freshly cell,but I just got some new 30q cells and have to change temp settings down to 390.
Can cell chemistry have this much effect on temperature control?
When I first got my dna 75 I thought the wattage out put at atomizer stayed constant as cell discharged but just like a mechanical mod,I can sense the vape changes through the discharge curve or the chip in mine isn't working.

 

[Eskie]

Given the cell chemistry is essentially the same, something else must be going on. What resistance is your build, and what is the wattage set in TC. Have you also tried using device monitor to see what the mod's behavior is?

 

[Robbert]

I cleaned the battery contacts,hcigar inbox,and noticed an improvement.I think when I put a fresh charged cell in,it scraped a bit of film off.
I'm using 24 gauge titanium #1 0.24ohm dual coils.
I set the wattage to 55watts.
I can't remember the ramp up setting,Id have to use evolve.

I'm going to clean,510 pin,check connections,coils,etc...
I'll also use evolve again and take a look at settings on a graph.
I'll post again with results and more accurate data on settings.
Thanks for the help!

 

[Eskie]

So not a crazy load drawing on the board. Yeah, the rechecking and tightening can resolve a multitude of problems. A 200F difference is just nuts.

One of the best parts of a DNA mod is the ability to open device monitor and see exactly what is going on. But it sounds like you're moving along now OK.

 

[Robbert]

I put it on escribe and checked atomizer.
I can't say for sure but either the 510 connection was a bit oily or one of the coil legs wasnt making a good contact.
Works consistently now.

 

[Eskie]

As long as it works. Glad it settled in.

 

[Chodi]

I also have a dna 75 (Lost Vape) and I gave up on TC. I use it in wattage mode only. TC mode is too inconsistent for me. I played around with the software but I decided I don't want to work that hard to get a decent vape. I guess if you are in love with Escribe and playing with software it is possible to get tc to work well on a dna 75 but I have several mods and I wound up using them all in VW mode it works for me. When I did try tc on other mods it worked reasonably well without all the software/computer effort. I think the dna 75 is overcomplicated for the average user. I give the Lost Vape credit for looking good and solid as a rock.

 

[kiba]

I also have a dna 75 (Lost Vape) and I gave up on TC. I use it in wattage mode only. TC mode is too inconsistent for me. I played around with the software but I decided I don't want to work that hard to get a decent vape. I guess if you are in love with Escribe and playing with software it is possible to get tc to work well on a dna 75 but I have several mods and I wound up using them all in VW mode it works for me. When I did try tc on other mods it worked reasonably well without all the software/computer effort. I think the dna 75 is overcomplicated for the average user. I give the Lost Vape credit for looking good and solid as a rock.

What do you mean by inconsistent?

Just curious bc from my experience, dna TFR ranges are about 75% more accurate the higher your temp than just a TCR input... The dna boards were tested by a guy on here and it turns out they are actually accurate within +/-10F. If you are having inaccurate readings with a dna board there's only a few things it could be, for example one would be a high internal resistance without the internal resistance being set, or like using the wrong material type or a material type that is slightly off for the TFR range you're using. Lots of "316L" out there but zivipf and unk have never done me wrong. I use mostly 430SS btw though, but I do use 316L for my claptons and it works just as well.

The reason for evolv using a TFR range in csv format though was for increased accuracy while still being simple to use, you can choose to screw around with it or just plug wire type into steam engine and download the file. IMO that's much much easier than doing a dry cotton burn test on a mod like my G class that uses a tcr input. I have just the one yihi board and the rest of my mods are dna's, but the dna's have given me way less trouble.

 

[Chodi]

I never set the internal resistance through Escribe. I have no idea how to do that. The reason it is inconsistent is because I use tanks that are single coil and there is not enough mass to get a stable reading. I have several single coil tanks and all that I have tried have the same results. 6-8 wraps with ss 316 produces low resistance and low mass. Not a good combination for tc on small single coil atomizers. Those small atomizers don't like large coils. They will only accept 2.5-3.0mm coils. Try putting 12 wraps on a Rose 3 to get over 1 ohm it cannot be done (just an example).

 

[kiba]

I pretty much exclusively use single coils and SS. Have you tried deleting the stock material profiles and downloading new ones? I found the stock ones for SS to be incorrect.

You test the internal resistance by shorting out the 510 and opening atomizer analyzer. I use a copper plug but you can use whatever.

 

[kiba]

Here's a link to some material profiles that work great for me on all my dna's. SS 316 and 316L are included in there.

Dropbox - Material CSV's.zip

 

[Chodi]

Here's a link to some material profiles that work great for me on all my dna's. SS 316 and 316L are included in there.

Dropbox - Material CSV's.zip

Thanks very much for the files. I have downloaded those I could find through Steam Engine and one other forum source. None of them work to my satisfaction.

If you could advise how to safely short the 510 I would be interested in that advise? The internal resistance setting may be the problem but shorting the 510 is nothing I would do without clear direction. Considering the power of the two 18650's I would not want to cause an explosion.

 

[kiba]

I use a little 510 threaded peice of copper. But if you have an atty that you can short out,you can just use that and subtract the resistance the atty.