iStick 40 TC doesnt fire titanium coils??

[Vaep]

Just got my iStick 40 and some titanium wire in today. I heard titanium was better than ni200 so I went with that.

First question: Why wont my iStick fire the titanium coil in TC mode??? It works in regular mode....

My second question is about titanium coils themselves: I was told not to dry burn these because if the coils become oxidized, the titanium becomes toxic. I tried dry-burning the coil anyway, and even though I built a pretty even microcoil, it was hot-spotting very bad in parts of the coil. (Much worst then any kanthal coil ive built.) So how can titanium coils be any good??? Even if I was using this coil in TC mode, wouldnt it also be hot-spotting??? I really dont like the idea of not being able to dry burn my coils and get out all the hot-spots...

 

[TXBiker]

No won't fire Ti Ni only not in it's software.

 

[Vaep]

hmmm... Its weird that I can use it in regular mode but not TC...

 

[KenD]

hmmm... Its weird that I can use it in regular mode but not TC...

Might be that the resistance of the titanium coil is too high for temperature control and that the istick therefore kicks you into vw mode? For example, some Yihi chips (I believe) have a .05 to .3 range for tc. What's the resistance of your titanium coil?

Sent from my C6903 using Tapatalk

 

[Vaep]

Ti coils have much lower resistance than kanthal coils...


Its 0.19ohms which, again, is really strange considering the limit is 0.3ohms. And yeah it kicked me into VW mode automatically..

 

[KenD]

Ti coils have much lower resistance than kanthal coils...


Its 0.19ohms which, again, is really strange considering the limit is 0.3ohms. And yeah it kicked me into VW mode automatically..

Yeah, I know, but it's quite easy to build coils over .3 with titanium. I use 28ga ti1 and I'm regularly at .32 or so (EvicVT, Kangxin Mini, Waidea flask). Weird that the istick kicks out of tc with a coil as low as .19. I can only guess that it's due to it being very strictly keyed in to the temperature coefficiency of ni200.

Sent from my C6903 using Tapatalk

 

[Cloudmann]

...I can only guess that it's due to it being very strictly keyed in to the temperature coefficiency of ni200...

Yep. The iStick can tell the difference. Ti and ni200 coils fire differently... it wouldn't be particularly effective at temp control with a Ti coil in ni200 mode.

That said, it won't be all that effective in wattage regulating mode with a Ti coil, either. Odd that it boots you out of one mode and not out of the other. It would make more sense that a Ti coil would register an error... that'd be a safer option IMO if it can't run a Ti coil properly.

 

[classwife]

Moved to Temperature Control from APV Discussion

 

[TheotherSteveS]

Yep. The iStick can tell the difference. Ti and ni200 coils fire differently... it wouldn't be particularly effective at temp control with a Ti coil in ni200 mode.

That said, it won't be all that effective in wattage regulating mode with a Ti coil, either. Odd that it boots you out of one mode and not out of the other. It would make more sense that a Ti coil would register an error... that'd be a safer option IMO if it can't run a Ti coil properly.

And why is that?? Every other TC mod (8 to be exact) that I use ranging from a chinA40 clones through authentic DNA40s, and SX mini m-class and a dicodes 2380 all work well or at least ok with Ti. Of these, only two explicitly support Ti!!
Interested to know therefore what feature about the I stick 40 that you know about would prevent it working!!

 

[TheotherSteveS]

No won't fire Ti Ni only not in it's software.

This is not true as a rule. Is there something special about this device that you know about??

 

[TheotherSteveS]

Just got my iStick 40 and some titanium wire in today. I heard titanium was better than ni200 so I went with that.

First question: Why wont my iStick fire the titanium coil in TC mode??? It works in regular mode....

My second question is about titanium coils themselves: I was told not to dry burn these because if the coils become oxidized, the titanium becomes toxic. I tried dry-burning the coil anyway, and even though I built a pretty even microcoil, it was hot-spotting very bad in parts of the coil. (Much worst then any kanthal coil ive built.) So how can titanium coils be any good??? Even if I was using this coil in TC mode, wouldnt it also be hot-spotting??? I really dont like the idea of not being able to dry burn my coils and get out all the hot-spots...

If it's hotspotting it won't work in TC mode since the measurement of the base resistance will be bogus and all hell will break loose. It's not the mod it's your build that's the problem I fear!,

 

[TheBloke]

Yeah this makes no sense. It should fire Titanium in Ni200 mode. There is no way a Ni200 mod can tell the difference between a Titanium and Ni200 coil.

Both of them increase their resistance with temperature, they both look identical as far as the mod is concerned.

With a Titanium coil it will simply think it has a Ni200 coil that hasn't heated up as much as it really has. Ie when you heat the Ti coil to 200°C, it will think it's a Ni200 coil that's been heated to 150°C (or similar numbers). Hence a Ti coil can be used on a Ni200 mod with an appropriate target temperature offset.

My guess is there might be something wrong with the specific Titanium coil(s) being tested with.

 

[TheBloke]

Well, one caveat- Titanium coils usually have a higher base resistance than Ni200.

So I suppose it's theoretically possible the iStick has done something stupid like set a maximum resistance for Ni200 TC mode.

Like it has a hardcoded check "if base resistance is greater than 0.2Ω, then always do VW"

If so, that's ridiculous for several reasons.

I still think it's more likely an issue with the Titanium coils tested. I might get an iStick TC at some point, as they're so cheap - $35 on 3FVape for example (though it's possible they won't ship to UK, because of ELeaf's desire to fleece certain countries and not others)

 

[TheotherSteveS]

Let's be clear here. If the mod will not support firing a properly built Ti coil in a decent atty then the device is broken! End of!

 

[TheotherSteveS]

Well, one caveat- Titanium coils usually have a higher base resistance than Ni200.

So I suppose it's possible the iStick has done something stupid like set a maximum resistance for Ni200 TC mode.

Like it has a hardcoded check "if base resistance is greater than 0.2Ω, then always do VW"

If so, that's ridiculous for several reasons.

Hi Tom. Saw you lurking in the background! That is the only thing that could be going on but I very much doubt it don't you?? I have one of these on the way (couldn't resit for £25 delivered in UK) . I'll have a look and test it during the week! Stay tuned!!

 

[TheBloke]

Hi Tom. Saw you lurking in the background! That is the only thing that could be going on but I very much doubt it don't you?? I have one of these on the way (couldn't resit for £25 delivered in UK) . I'll have a look and test it during the week! Stay tuned!!

Ah great - is that SR Vapes?

 

[zoiDman]

Just got my iStick 40 and some titanium wire in today. I heard titanium was better than ni200 so I went with that.

First question: Why wont my iStick fire the titanium coil in TC mode??? It works in regular mode....

My second question is about titanium coils themselves: I was told not to dry burn these because if the coils become oxidized, the titanium becomes toxic. I tried dry-burning the coil anyway, and even though I built a pretty even microcoil, it was hot-spotting very bad in parts of the coil. (Much worst then any kanthal coil ive built.) So how can titanium coils be any good??? Even if I was using this coil in TC mode, wouldnt it also be hot-spotting??? I really dont like the idea of not being able to dry burn my coils and get out all the hot-spots...

My iStick TC works with Ti Grade 1 Coils.

I have to Lower the Temperature setting to account for the Non-Nickel coil. But aside from that, it seems to work OK.

 

[TheBloke]

My iStick TC works with Ti Grade 1 Coils.

I have to Lower the Temperature setting to account for the Non-Nickel coil. But aside from that, it seems to work OK.

Awesome. So it's an issue with the OP's coils for sure. Thanks for confirming!

 

[zoiDman]

Awesome. So it's an issue with the OP's coils for sure. Thanks for confirming!

To be Honest with you, I'm not sure What is going on?

Maybe there is a Problems with His/Her iStick? I dunno? I Wouldn't rule that completely out.

But I think it is Much More Likely that there is a Problem with the OP's Coil.

I would also like to know More about the Build He/She is using? And what Temp Setting He/She has their iStick TC set at?

 

[VapingTurtle]

Just for another data point, I'm sitting here vaping away in TC mode with a Ti coil (generously donated to me, thank you donor) on my iStick TC40 and a KFL+v2.

28g Ti, if I remember correctly 5/4 slightly spaced wraps on a 2.4mm mandrel, 0.30 ohms base resistance, 310 degrees F setting. Nice, flavorful, easy mtl vape. Kinda like my usual 1.5-1.7 kanthal contact coil.