Newbie to tc advice

[KittenJuggler]

Hi all,
Thought I would try the dark art of tc.
I'm using an aegis legend and kf lite clone.
Using 316l ss my coil is reading. 83 ohms.
Started tc at 200 deg C.
The tcr on the mod for ss is 112,not sure how accurate that is. Took a few tentative puffs OK bit warm, noticed mod Wattage for coil was 55 w.
Changed Wattage to 20w.
Just want to check I'm doing this right.
In power mode 20 watt's would be as high as I would go, however as I'm in tc mode can I go higher safely without knacking the coil or am I best to stick where I am.
Thanks in advance.

 

[nwhornet]

You can go higher as you want the initial power to get the coil up to temp asap & then the mod should regulate power to maintain that temp. TCR for SS316L is 87-88 if I recall right.

 

[KittenJuggler]

You can go higher as you want the initial power to get the coil up to temp asap & then the mod should regulate power to maintain that temp. TCR for SS316L is 87-88 if I recall right.

Thanks mate does the tcr depend on the gauge of the wire?
Also how high can I go without ruining the coil, the mod had it at 55 w, but in power mode it would ruin the coil as around 20 would be max, I'm guessing it doesn't matter as much in tc mode as mid will regulate it?

 

[nwhornet]

TCR is material dependent, wire guage makes little difference. Best way to set up for TC is set power between 10-20% higher for that initial heat up. Once the mod detects resistance change it then takes over power delivery, dropping it to a level that maintains the temp. Some mods do this far better than others though so results can be mixed. Temp wise you can increase it as high as you feel your getting the vape you want.

 

[red5]

Tcr for ss316 and 316l is 92.
Djlsbvapes found the tcr 112 to be more accurate on the aegis legend though.

 

[Simon G]

if it's a bit warm lower the temperature, not the wattage.

 

[Simon G]

as a general rule I'd have the power set to double I would use for wattage vaping.

 

[lucifah]

as a general rule I'd have the power set to double I would use for wattage vaping.

^^ this. I set it least 50% higher than I would on wattage. Makes the ramp-up almost instant, and then as previously said, the mod will regulate down at the set temperature.
If you set the wattage too close to what you'd use in wattage mode, the ramp-up takes longer, because the mod considers your setting a hard limit. If the wattage is too low to reach the temperature, you will effectively vape at a temperature below your setting.

Some mods can show you what the effective wattage and temperature of your last puff were. I find that quite useful info. DNA will do that (with escribe tweaks), Arctic Fox enabled mods (Pico and other eLeafs/iJoys) do it, and Dicodes Dani Box does it per default.

 

[Deleted member 54254]

TCR Values

Ni200: 0.00620

Ti01: 0.00350

SS316L: 0.00092

SS316: 0.000915

SS317L: 0.00088

SS317: 0.000875

SS304: 0.00105

SS430: 0.00138

SS410: 0.00155

NiFe30 (Resistherm): 0.00320

NiFe30 (Stealthvape): 0.00500

NiFe48 (CWC): 0.00310

NiFe52 (CWC): 0.00340

NiFe70 (CWC): 0.00500

Tungsten: 0.00450

Platinum: 0.00392

Nichrome: 0.00040

Gold: 0.00340

Iron: 0.00500


https://www.djlsbvapes.com/different-wires/

When building coils, over 0.15 ohms for Ni200 or NiFe30, and over 0.25 Ohms for SS316 and Ti01 are good targets to aim for. I think the term is resistive sensitivity. Tubby discussed this, have a search on the forum.