SS316l TC issue

[slater_furious]

Ive just got a Koopor Plus and excitedly built my first SS dual coil, the very thing that made me but this in the first place.

I just cant get it right. The TC dosnt seem to kick in and i get hot legs. Ive tried many variations and all the connections are solid. Ive tried this on two RDA's and my aromamizer and i get the same with each. Ive tried spaced coils and contact coils. Ive changed the TCR to 0.00092 as recommended in many places and reviews. Ive even had it down at 200f with the same issue

Its driving me nuts. The same coils work fine in watt mode, which is what im doing until i can figure this out

 

[spikey1]

I have the Koopor mini which prior to the so called available firmware update is meant to do Ni and Ti coils. Ni works fine as too does Nife30 setting the Nickel TCR to 0.0050 which is the wrong default for Nickel!

However Ti doesn't like TC at all, it just doesn't seem to moderate correctly. What's more annoying is even if you run Ti in Nickel mode and set the TCR to it's lowest 0.0040 AND use a temp off set, it still doesn't seem to work.

I understand the Plus may have addressed the Ti issue somewhat but have read the same sort of things happen to SS on it.

Is the Koopor jumping out of TC into wattage or just not regulating correctly?

 

[slater_furious]

Just not regulating correctly. It doesn't even reach 200f and the legs glow red. I can see the temperature rising on the mode, it just never hits 200f. Actually set fire to a coil and wick last night and the temp still wasn't 200. I've seen quite a few reviews on how well this mod tc's, so I figure I must be doing something wrong. I've ordered some larger gauge wire in case its a problem with the wire.

 

[danb]

Just not regulating correctly. It doesn't even reach 200f and the legs glow red.

Strange. I've never used SS, mainly because the TC precision is poor on paper. Maybe you can get some more ideas if you post the full specs of the coil (wraps, resistance, diameter, gauge)? It sounds like it's overheating, or heating unevenly. If you're under 0.5 Ohm, the mod may be struggling to detect temperature changes properly. Are you sure the coil resistance is correctly calibrated at room temperature?

Lower resistance (e.g. thicker wire) will result in lower precision and potentially more problems.

 

[slater_furious]

Strange. I've never used SS, mainly because the TC precision is poor on paper. Maybe you can get some more ideas if you post the full specs of the coil (wraps, resistance, diameter, gauge)? It sounds like it's overheating, or heating unevenly. If you're under 0.5 Ohm, the mod may be struggling to detect temperature changes properly. Are you sure the coil resistance is correctly calibrated at room temperature?

Lower resistance (e.g. thicker wire) will result in lower precision and potentially more problems.

I've tried quite a few coils with different grades of wire with resistance ranging from 0.11 to 0.55. I've tried spaced coils and contact coils. Three different wire gauges 30, 28 and 24. Nothing works. If also tried them on an aromamizer and my 15 heavens, all get the same result, not limiting a nd glowing red legs. Probably going to give up and wait until I get on of my dna 200 mods.

 

[danb]

I've tried quite a few coils with different grades of wire with resistance ranging from 0.11 to 0.55. I've tried spaced coils and contact coils. Three different wire gauges 30, 28 and 24. Nothing works.

I'd try higher resistance, like 0.75 Ohm or more. Reason being that the mod will then be able to monitor the temperature accurately. At 0.5 Ohm with SS, your mod needs to be able to detect a temperature change of 0.0005 Ohm to be accurate to 1 °C - this seems to be around the point where things get a bit wobbly, it's roughly equivalent to a 0.07 Ohm Ni200 build. The sensitivity of Ni200 and SS are about the same, so my guess is you need to use similar builds with SS as you would for Ni200 - thin wire and lots of wraps. This is why I haven't bothered with it myself.

I hope you get it sorted.

 

[jimsie33]

I'm having troubles with ni200 and the temp control, have to turn coefficient right down to 0.00400 to get the temp protection to kick in. Using 0.3mm wire with 3mm I'd at about 0.18ohms. Would a thinner gauge be better? Cheers ☺ Wattage mode is just ace though.

 

[danb]

Using 0.3mm wire with 3mm I'd at about 0.18ohms.

How many wraps in that build? I suspect your overheating problem is due to static resistance, but can't be sure without full coil specs.

Would a thinner gauge be better?

No, <0.3 mm Ni200 is very fragile. The wire thickness is probably not the problem here.

Wattage mode is just ace though.

Be careful. You shouldn't vape Ni200 in wattage mode.

 

[brixpaul]

Since I got some 316 and 317 ss to use with tc, I haven't used tc lol I found it such a nice vape in wattage mode that I haven't bothered.

 

[jimsie33]

How many wraps in that build? I suspect your overheating problem is due to static resistance, but can't be sure without full coil specs.

Coil specs are 0.3mm ni200 10 wraps with 3mm id ohming out at 0.18.


No, <0.3 mm Ni200 is very fragile. The wire thickness is probably not the problem here.

Will persevere with the 0.3 then.


Be careful. You shouldn't vape Ni200 in wattage mode.

No, I meant with kanthal. Cheers for the reply

What is static ohms?