eVic-VT mini?

[Mercster]

My question is My Crown SS coil have worked fine in Temp mode with the VTC is there a health issue by using that coil or is it just the accuracy in controlling Temperature

I don't think it's a health issue, it's just not designed to do TC so it probably doesn't do it accurately. If it's working for you, go for it . It's like how people with devices that don't support titanium use it in NI200 mode.

Of course if there are health questions about it, someone should speak, but I haven't heard of any...

 

[Gfdeputy2]

Thanks You That is what I thought been on the same coil for about a month & hasn't crapped out yet
just wanted to make sure it isn't a health thing as I quit smoking for a reason!

 

[Devlinukr]

Hi everyone, any of you have an idea why efun added 3$ to the black model price? I already asked them, waiting for reply.

Supply and demand I would imagine.

I ordered the white one because ft were out of stock on the black and tbh I'm glad.

 

[zeus01]

Hey peeps, have the fluctuating res and anemic vape probs in tc mode been resolved by jtech? Is there a thread dedicated to the issues yet?

nope has not been resolved as of posting,yesh there is a dedicated thread aside from this thread
one in ecf and 3 or 4 more on the joytech forums.

only 2-3 of us htat had the issue had the problems fixed and by no means with the software update.

Where (R) is used in the mix, it acts as a shunt and may(likely will) affect accuracy in controlling Temperature. Supplying Power through an nr-r-nr is not the issue, TC will.

Are people verifying SS compatibility or just assuming All SS is the same(Not) and 1 algorithm will work for all variations? TCR curves vary!

* eVic mini is a Product, sold by a Company(Joyetech) that is in the business of selling functional Matched Equipment.
Joyetech Tanks/Atomizers work on the Evic - Therefor the Device functions. Other Tanks/Atomizers can work on the evic, however for best performance they need to be of matching specifications. <ohm range, TCR>

***Anyone who has Not updated.....Don't blame Joyetech

well id happy even if the tank worked.
but it doesnt work too,
stock tank with the stock coils also suffer the weak vape bug ,

 

[cigatron]

Hi, thinking of making a switch to ss.
Either 316l or 317l, which guage is prefered for single rba build?
I have both ST mini and Smok tfv4.
Can ss be used with the original evic vt? I have the original and the new mini. On the original do you use the ti mode?
What is the prefered resistance and wattage for ss.
I know i am asking a lot of questions but would appreciate any help or advice on this.
Thanks in advance

Sent from my SM-N900P using Tapatalk

Yes ss can be used on a vt60 in Ti mode at around 240°f but only 430ss and only between .5-.7 ohms (verified) otherwise it will intermittently jump out of tc mode. The rest of the ss types have too low of tcr to be used on the vt60. Don't know for sure on the vtc mini.

28g 430ss is available from unkamen. 430ss is very springy so it's best to torch/anneal it before coil winding. Then it must be pulsed to yellow hot to settle the tcr and res.

Wattage is purely atty dependent and has little to do with wire type.

I've been using one of my evic vt60's with a 430ss .58ohm spaced coil in a subtank mini for a few weeks now with no trouble in Ti mode. It fires rocket fast and the vape is very good. The only issue I have had is the wire is kinda weak and requires careful rewicking after dryburns.

Good luck.

 

[VapingTurtle]

Where (R) is used in the mix, it acts as a shunt and may(likely will) affect accuracy in controlling Temperature. Supplying Power through an nr-r-nr is not the issue, TC will.

When speaking of nr-r-nr in this case I am considering the r wire to be the TC wire, i.e. Ni, Ti, or SS; not kanthal or nichrome r wire. All of the TCR would be in the r section, so how would it not maintain TC accuracy?

(Please explain to me again, @crxess, with a different statement, and maybe I'll understand.)

 

[scrappy]

Yes ss can be used on a vt60 in Ti mode at around 240°f but only 430ss and only between .5-.7 ohms (verified) otherwise it will intermittently jump out of tc mode. The rest of the ss types have too low of tcr to be used on the vt60. Don't know for sure on the vtc mini.

28g 430ss is available from unkamen. 430ss is very springy so it's best to torch/anneal it before coil winding. Then it must be pulsed to yellow hot to settle the tcr and res.

Wattage is purely atty dependent and has little to do with wire type.

I've been using one of my evic vt60's with a 430ss .58ohm spaced coil in a subtank mini for a few weeks now with no trouble in Ti mode. It fires rocket fast and the vape is very good. The only issue I have had is the wire is kinda weak and requires careful rewicking after dryburns.

Good luck.

I was under the assumption that you never want to torch or dry burn ss because you could create hexavalent chromium. I could have sworn I read that somewhere around here.

 

[crxess]

When speaking of nr-r-nr in this case I am considering the r wire to be the TC wire, i.e. Ni, Ti, or SS; not kanthal or nichrome r wire. All of the TCR would be in the r section, so how would it not maintain TC accuracy?

(Please explain to me again, @crxess, with a different statement, and maybe I'll understand.)

Yea, like you don't know 2-3x what I do.......

 

[cigatron]

When speaking of nr-r-nr in this case I am considering the r wire to be the TC wire, i.e. Ni, Ti, or SS; not kanthal or nichrome r wire. All of the TCR would be in the r section, so how would it not maintain TC accuracy?

(Please explain to me again, @crxess, with a different statement, and maybe I'll understand.)

If I may? The more static res (non tc wire) you have in a tc circuit, the less accurate the temp will be because not all of the coil circuit wire is changing res (tcr). So, the non tc wire is contributing to the baseline res at 68°f but not contributing to the tcr algorithm (TFR) as the coil heats up.

The static res contained within the mod, 510 connector and internal current carrying components of the atty all contribute to temp inaccuracy.

The more total static res in the circuit the more the mod will show lower than actual coil temp, unless of course you have a mod with adj tcr or nickel purity settings whereby you can compensate for temp offset.

Static res is unavoidable but can be minimized with good quality atties and mods.

Cig

 

[scrappy]

If I may? The more static res (non tc wire) you have in a tc circuit, the less accurate the temp will be because not all of the coil circuit wire is changing res (tcr). So, the non tc wire is contributing to the baseline res at 68°f but not contributing to the tcr algorithm (TFR) as the coil heats up.

The static res contained within the mod, 510 connector and internal current carrying components of the atty all contribute to temp inaccuracy.

The more total static res in the circuit the more the mod will show lower than actual coil temp, unless of course you have a mod with adj tcr or nickel purity settings whereby you can compensate for temp offset.

Static res is unavoidable but can be minimized with good quality atties and mods.

Cig

So the easy way of saying this would be, nr wire has some resistance and the mod can't take that into account?

 

[Carnage9270]

Yeah, naming wire "nr" is a big misnomer.

 

[cigatron]

Yeah, naming wire "nr" is a big misnomer.

Yes, not an accurate depiction. In this case we're talking about non tc wire, that is, wire which has little to no tcr value and does not increase in res with rise in temperature. That's static res.

So the easy way of saying this would be, nr wire has some resistance and the mod can't take that into account?

Better would be, non tc wire has res which the mod DOES take into account when setting ambient baseline res but causes temp offset due to it's lack of tcr value (res does not increase with rise in temp).

Now if you are talking about wire with little to no res (nr wire), like with nr-r-nr coils then your temp control would still be accurate.

 

[CorallineAlgae]

Just put a .27Ω 24 gauge 316l SS coil in the Crown RBA. The VTC is working well in temp control set to 40w and 460°. I've tried SS TC using three tanks and 6 different builds. The update is a big success on my end.

 

[cigatron]

Just put a .27Ω 24 gauge 316l SS coil in the Crown RBA. The VTC is working well in temp control set to 40w and 460°. I've tried SS TC using three tanks and 6 different builds. The update is a big success on my end.

What all was updated besides the 75w upgrade?

 

[VapingTurtle]

If I may? The more static res (non tc wire) you have in a tc circuit, the less accurate the temp will be ...

sounds good and true, but...

Now if you are talking about wire with little to no res (nr wire), like with nr-r-nr coils then your temp control would still be accurate.

nr-r-nr coils is exactly what we are talking about. @Mercster suggested that they are not appropriate for TC. I don't see why they are inappropriate; that's why I was asking. nr leads on a coil add hugely insignificant resistance relative to the r wire, and insignificant static resistance to the circuit.

I think. I may be wrong.

 

[Tol]

What all was updated besides the 75w upgrade?

1.20 added 75 watt, 1.30 added SS mode and 2.0 changed screen layout i think?

sent using Tapatalk

 

[cigatron]

sounds good and true, but... nr-r-nr coils is exactly what we are talking about. @Mercster suggested that they are not appropriate for TC. I don't see why they are inappropriate. nr leads on a coil add hugely insignificant resistance relative to the r wire, and insignificant static resistance to the circuit.

I think. I may be wrong.

Yes, all true.

 

[cigatron]

1.20 added 75 watt, 1.30 added SS mode and 2.0 changed screen layout i think?

sent using Tapatalk

Thanks @Tol . I'm doing a little research for friend who's looking to buy a single 18650 tc mod. I'll probably have lots of device specific questions.

 

[VapingTurtle]

And nr-r-nr coils keep all of the heat on the wet wick (instead of the dry leads), so they may in theory be more accurate for TC.

Maybe.

In theory.

 

[cigatron]

So far from skimming this thread I've only picked up on one problem with this device, the misreading res too low/underpowering problem in Ti and SS tc modes. Are there others?