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jesseseetai

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Reply with quote  #16 
Quote:
Originally Posted by dwcraig1
0.41Ω to 0.46Ω is around 12.5%, it should have remembered it.


oh you know what, i changed my value to 6% ... i thought it would be better to use a lower value because 25% seemed high to me. do most of you guys just leave it at 25%?
jesseseetai

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Reply with quote  #17 
update

so i built an SS coil in my Narda (authentic). put it on the mod and it read the ohms at .63. it was vaping good but i noticed it was only hitting a temp of 135 C and i have the temp set to 240 C and it's running at 22 watts. i thought 135 C seemed a bit low, so i hooked it up to escribe and did the atomizer reading and let it sit for a while and it was showing the raw ohm as .587 ... so i did "override ohms" and put it in at .587 and now it's vaping great.

when i initially put the Narda on it was completely cold, i had just finished building it. so my question is, why would it initially read at .63?


VapingBad

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Reply with quote  #18 
That's refinement working out it was .587 and you shouldn't need to override ohms if that is what is on the screen when idle.  IDK exactly why, but would guess that it is either resistance in the atty and connections or less likely the mod was cooler than the atty at first.  You can also see room temp in atty analyser, this is normally a bit high unless the devices has been sitting for a while.
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• I am not employed by nor do I represent Evolv Inc.  All opinions are my own, they are just opinion not fact and can be wrong •

Latest versions of EScribe: DNA 200/250DNA 75
Common problems
jesseseetai

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Reply with quote  #19 
something is wrong with the mod/chip. i've now tested it with different attys and it's consistently reading the ohms at least .02 low (the one time it read the ohms as higher seemed to be a fluke). once i go into escribe and adjust to make the resistance .02 ohms higher then everything works much better.

i took apart the mod to look at the connections. let me know what you guys think. it's kind hard to see the 510 connection cause of the tape. 

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VapingBad

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Reply with quote  #20 
Have you subtracted the test lead res of the multimeter & what is the mod resistance set to?  0.02 should not be much of a problem unless you are sub 0.1 ohm, that only when using NiFe30 and Ni200 for me.
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• I am not employed by nor do I represent Evolv Inc.  All opinions are my own, they are just opinion not fact and can be wrong •

Latest versions of EScribe: DNA 200/250DNA 75
Common problems
jesseseetai

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Reply with quote  #21 
i have the mod resistance set to 0.008. and i agree, you wouldn't think 0.02 would make that much of a difference but it's making a huge difference
VapingBad

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Reply with quote  #22 
0.008 mod resistance seems high to me, I have both my 75s at 0.000 as testing they were both below 0.002, both have an Evolv 510.  I would try zeroing it IIWU.
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• I am not employed by nor do I represent Evolv Inc.  All opinions are my own, they are just opinion not fact and can be wrong •

Latest versions of EScribe: DNA 200/250DNA 75
Common problems
jesseseetai

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Reply with quote  #23 
yeah i'll set it back to zero, but the problem was occurring before i changed it from 0. 
jesseseetai

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Reply with quote  #24 
so i reset the mod back to factory defaults and i'm still having the same issue. i have a resistance reading of .56 and its hitting temp protect immediately and a cold vape at 23 watts. if i override ohms to .58 then it vapes way better and isn't aggressively hitting temp protect. could this be a bad 510 connection?
ChunkyButt200

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Reply with quote  #25 
could be a dirty 510. try cleaning her out with some iso alc. however, usually when a 510 is making a poor/weak connection to your atty the ohms will be higher, not lower. maybe there is a tiny piece of something metallic inside of the 510 slightly shorting it. you also have to make sure you're using the correct csv material curve/TCR for the wire you're using. keep in mind not all wire is created equal. there are varying grades of all TC wires. make sure you know what you have. i find i have to tweak the SS 316L  TCR of .00092 to .00096-.00098 to get the vape i like. using .00092 at 600°F doesn't quite do it for me so i bump the TCR up a smidge.
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• I am not employed by nor do I represent Evolv Inc.  All opinions are my own, they are just opinion not fact and can be wrong •
Latest versions of EScribe: DNA 200 • DNA 75  Common problems
EVOLV HELP DESK - https://helpdesk.evolvapor.com/?a=add
LOST VAPE WARRANTY REPAIR - http://www.lostvaperepaircenter.com
awsum140

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Reply with quote  #26 
Chunky, I clean both the atomizer base and the 510 on the mod with IPA at every atomizer change, even though I have zero leaking problems with any of my builds.  The TCR is the exact same one for each use, successful use followed by non-successful use, and the exact same TCR that works fine in other mods, DNA200s.  Something strange is going on and I have yet to identify it or get feedback from forums or Evolv that can identify it.  Multiple boards, added grounds and even did the "eggplant" dance with no changes in behavior.
JohnnyBigodes

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Reply with quote  #27 
Same problem here ;o(

It seems the Evolve chip isnt reading right.

The same issue i know from Joyetech chips.

It reads everytime to low, for some reason.

If you adjust you ohm readings higher it vapes like a dream.

The problem on all this is, that i am comparing a highend chip to a dirty cheap chip and both seem to have the same issues.
awsum140

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Reply with quote  #28 
I found a work around.  All I did was raise the temperature until things worked properly.  The DNA75 is set to 530F while a DNA200 with the same build is running fine at 480F.  It may just be a question of tolerances in components.  Beats me but it does work.  The 50F difference does bother me though.
BillW50

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Reply with quote  #29 
Temperature sensitive connection it sounds like to me. I too have seen this behavior before on even DNA200 mods.
awsum140

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Reply with quote  #30 
The funny part is that the 75 is an Evolv 510 and the 200, at least one of them, is an FD V4.
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