Joyetech Evic VT 60 Watt

[foggybottom]

Yes I'm seeing refinement, And it holds.

That's what my posts yesterday were showing in a long winded fashion.

I'm thinking... of course it refines why else would it be sampling for 4 mins after you put it down. (Tick&beep)

I was purposely cheating it for a minute though at the ~.1 higher res and the ti temps were more accurate.... But after I put it down it refined back to the correct res.

It holds only if the build holds, which means that the wandering locked resistance that happens with some toppers/builds is topper dependent, not the mod?

 

[Bikenstein]

I locked in my GS Air nickel coil cold at .064 and vaped it a full day. It performed great. But I locked it in a little warm at .075 and it hits just as good or better on the SX Mini. Same watt and temp settings. The only difference is that it shows it's applying a higher voltage to the coil. The dna 40 automatically locks the resistance. Once you apply heat to one of these coils it will take up to 20 minutes to return to it's ambient temp resistance according to tests.

 

[Bikenstein]

The SX Mini doesn't refine back to the correct resistance if you lock it in higher, it stays at the "locked" in resistance. I guess the VT has a different feature here. I haven't had a problem with res jumping with any att I've used including the rba in the ST Mini. I thought the BCC GS Air might but it stays steady too, even with the pin and grommet connection.

 

[USMCotaku]

I did exactly what you said. I've had no res fluctuations on my CLT v3 since I put it on last week. It has shown a steady .32 locked and unlocked, even after a wick change. After I vaped it I took it off and immediately put it back on. The res showed .43 and when I hit fire it asked new coil/same coil. I hit same coil and it went right back to .32. This was with the res unlocked as it's been for the last 2 days.

This is correct behavior

 

[USMCotaku]

It holds only if the build holds, which means that the wandering locked resistance that happens with some toppers/builds is topper dependent, not the mod?

In must cases, correct... The problem is usually with the build/coil. This mod seems more sensitive to anything off with the build or connection. The known perfect builds I've put on it have all worked exactly as they should...my sub tanks, not so much
I did figure out how to make them work ok (turning the mod off with res unlocked in Ni mode before putting atty on).

 

[Bikenstein]

In must cases, correct... The problem is usually with the build/coil. This mod seems more sensitive to anything off with the build or connection. The known perfect builds I've put on it have all worked exactly as they should...my sub tanks, not so much
I did figure out how to make them work ok (turning the mod off with res unlocked in Ni mode before putting atty on).

Are you sayin that you've had problems with your builds in sub tanks or the factory coils?

 

[USMCotaku]

Are you sayin that you've had problems with your builds in sub tanks or the factory coils?

Occ's other then one build, that was my fault (one of my coils was almost touching after wicking, but I left it thinking it would be fine )

 

[foggybottom]

Yikes, exploring the "refinement function" as described by Cigatron and Jeremy, I managed to replicate the flipping from Temp into Power mode that Busardo .....ed about:
Temp ti, res .42, unlocked
Take three vapes
Unscrew topper and screw back on
Temp Ti, res 0.54
"New coil right etc" toggle right
Screen reads Temp Ti, res 0.54
Fire and it flips into Power mode!

 

[cigatron]

Yikes, exploring the "refinement function" as described by Cigatron and Jeremy, I managed to replicate the flipping from Temp into Power mode that Busardo .....ed about:
Temp ti, res .42, unlocked
Take three vapes
Unscrew topper and screw back on
Temp Ti, res 0.54
"New coil right etc" toggle right
Screen reads Temp Ti, res 0.54
Fire and it flips into Power mode!

Try it with the res locked. It should just refine back to original ambient res.

 

[Thayamax]

Yikes, exploring the "refinement function" as described by Cigatron and Jeremy, I managed to replicate the flipping from Temp into Power mode that Busardo .....ed about:
Temp ti, res .42, unlocked
Take three vapes
Unscrew topper and screw back on
Temp Ti, res 0.54
"New coil right etc" toggle right
Screen reads Temp Ti, res 0.54
Fire and it flips into Power mode!

I believe the highest res you can use in Ti mode is 0.5. Isn't that what would cause it to flip to Power mode?

 

[atroph]

I believe the evic refines when its ambient temperature reading is lower when it was set. When ambient goes down so do the ohms from what I have experienced. Either way if need be I just up the temp to return to "normal".

So far I love my device with nickle coils. I have stayed below 0.2 ohms on all my builds and it has never dropped into vw mode.

The heating of the atty unscrewing it and rescrewing it seems kinda pointless as it isn't normal procedure IMO. If you were filling a tank the coil should have cooled off by the time you are done filling it up.

Just my thoughts.

 

[foggybottom]

Try it with the res locked. It should just refine back to original ambient res.

Yeah, I know, that's normal behavior, except it's an immediate reversion to the previously locked resistance, not a gradual one as happens if you lock it after answering the new coil question by toggling right.

 

[foggybottom]

I believe the highest res you can use in Ti mode is 0.5. Isn't that what would cause it to flip to Power mode?

According to the manual, the cutoff is 1 ohm

 

[foggybottom]

I believe the evic refines when its ambient temperature reading is lower when it was set. When ambient goes down so do the ohms from what I have experienced. Either way if need be I just up the temp to return to "normal".

So far I love my device with nickle coils. I have stayed below 0.2 ohms on all my builds and it has never dropped into vw mode.

The heating of the atty unscrewing it and rescrewing it seems kinda pointless as it isn't normal procedure IMO. If you were filling a tank the coil should have cooled off by the time you are done filling it up.

Just my thoughts.

It may not be a normal procedure, but we're probably not normal on this thread!

 

[foggybottom]

It may not be a normal procedure, but we're probably not normal on this thread!

Wrong emoticon, told you I'm not normal.

 

[paleh0rse]

Removed.

 

[atroph]

According to the manual, the cutoff is 1 ohm

Correct. What does a 0.5 ohm ti coil at vape temperature ohm out to? I am guessing it is close to if not above 1 ohm thus when you remove and replace the hot head it flips to vw mode. Just a guess.

I can figure the math if anyone knows the ti coefficient off the top of their head.

 

[paleh0rse]

I received the following email reply from Joyetech this evening in response to my request for a replacement/repair.

"Macy" from Joyetech is straight-up denying that they've temporarily halted production as a result of these issues, but then immediately contradicts herself when she says "this is what we are trying to improve" at the end of number one below.

According to her, they didn't stop to fix anything. Instead, they stopped merely to catch up on orders?

Dear friend,

Thank you for your email and sorry for the delayed reply.

Firstly, we must make a statement that our evic-vt is not temporarily out of service. Because of too many orders, we just do not have enough time to arrange shipment.
Secondly, for the issues you mentioned, the explanations are given as follows:

1. Under the conditions of resetting or installing a new atomizer, the screen will display 30w which lasts 1-2 seconds. This is used to detect whether it is VT heating wire. The high output power may do certain damage to some atomizer heads. This is what we are trying to improve.
2. Our atomizer is equipped with gold plated connector which will greatly improve the resistance accuracy. If other atomizer is used, it is normal to have some difference between the resistance. You can try to tight up and loose the atomizer for severl times.

Hope this can help you.

Best wishes!

Number one was referring to the wattage pulse at start up, and number two was referring to the wandering and/or inaccurate resistance issues some of us are experiencing.

 

[madrabbit]

I received the following email reply from Joyetech this evening in response to my request for a replacement/repair.

"Macy" from Joyetech is straight-up denying that they've temporarily halted production as a result of these issues, but then immediately contradicts herself when she says "this is what we are trying to improve" at the end of number one below.

According to her, they didn't stop to fix anything. Instead, they stopped merely to catch up on orders?


Number one was referring to the wattage pulse at start up, and number two was referring to the wandering and/or inaccurate resistance issues some of us are experiencing.

this don't sounds like they have any solution for all the problem but try to push u away from catching them to salve the problem. plus they keep on mention their atomizer work better with their evit vt, and this sounds like sony last time use to do, they can only as sure hugh quality picture when u use sony player with a sony tv, gosh…..i hate to admit it but i feel a bit not so happy hahahaha….

 

[AnsonJames]

Hehe, yeah. I've always found it funny that the one part of ohm's law they cannot control, because it's a physical property, they put a lock on it to make you feel better about your connections.
If your resistance is varying there are a number of different places it can happen. It can be the fault of the atomizer or the device itself. To read resistance, it has to be measured from the positive connection leaving the chip all the way to the negative connection at the chip. This loop has many factors here. Wire, insulator, solder points, 510 positive pin, all the workings inside an atomizer, back through the negative threaded side of the 510 connection. It's a mess of resistance that needs to be kept at a constant value, and that value can only be controlled by it's physical parts. Not a chip in the world that can change physical properties.

It has nothing to do with the device "changing psychical properties" of the coil - the electronics and software are supposed to deal with heat
effecting the resistance change by keeping the power level the same based on the original "locked" reading - but it's not staying locked.


The Yihi temp control chips can do it, as can the later versions of the DNA 40 - the VT can't do it very well - apparently.