How to build accurately with SS316L on non-step-up mods (ohm jumps)?

[UncLeJunkLe]

I'm dabbling a bit with SS316 more these days because I acquired a single battery mod with no step-up. and noticed that upon firing the resistance always jumps about 0.1 to 0.3 ohms as soon as I hit the fire button. Then within seconds after I release the fire button the ohms go back down to where it was as the coil cools. Is this normal?

If it's normal, then how do you accurately build using SS316L since you don't know exactly what the resistance is going to be when you hit that fire button?

This is important to me because this mod does not have step-up (yes, I knew it lacked step-up going in). So vaping at 25-30W, in order to use the battery through to say 3.5V and never notice a drop in wattage, I have to build at 0.3-0.4. But if I build an SS coil at 0.3 and it jumps to 0.55 upon fire, then that means at some point the mod would have to engage in step-up to maintain the 25-30W, but it can't so I would notice the decreased power, so I would have to change the battery more often or deal with the weaker vape. The solution would be to build at say 0.1 but I really don't want to build that low for reasons I won't get into right now.

 

[Letitia]

It is normal for ss wire to ohm up when firing. If you want consistent resistance you'll be wanting tc settings. I use ss but I don't care for tc so can't help out there. I don't pay much attention to battery life honestly; just change them out when out when needed.

 

[zoiDman]

I'm dabbling a bit with SS316 more these days and noticed that upon firing the resistance always jumps about 0.1 to 0.3 ohms as soon as I hit the fire button. Then within seconds after I release the fire button the ohms go back down to where it was as the coil cools. Is this normal?

If it's normal, then how do you accurately build using SS316L since you don't know exactly what the resistance is going to be when you hit that fire button?

This is important to me because I recently purchased a mod that does not have step-up (yes, I knew it lacked step-up going in). So vaping at 25-30W, in order to use the battery through to say 3.5V and never notice a drop in wattage, I have to build at 0.3-0.4. But if I build an SS coil at 0.3 and it jumps to 0.55 upon fire, then that means at some point the mod would have to engage in step-up to maintain the 25-30W, but it can't so I would notice the decreased power, so I would have to change the battery more often or deal with the weaker vape. The solution would be to build at say 0.1 but I really don't want to build that low for reasons I won't get into right now.

Just to put a Qualitative Context to all this... How Accurate / Precise do you believe your Mod is (if that is what You are Using to Measure Resistance and Voltage) when it comes to Actual vs Displayed Ohms and Volts ?

 

[UncLeJunkLe]

I don't pay much attention to battery life honestly

I don't either, except in rare cases where I have a mod that has no step-up and I build too high to where the mod will have to step up to maintain consistent vape for a long duration. Depending on resistance and wattage setting, to avoid weak vape, could literally mean only 15 min of wattage-consistent vape time on a mod with no step-up.

 

[UncLeJunkLe]

Also, the reason I am dabbling in SS is not for TC, rather because in order to get at least 3 wraps on 28g wire, 2.5-3mm, at low ohms like 0.3-0.4, Kanthal and Ni80 simply won't do since # of wraps would be like 2 wraps lol. SS wire somewhat solves that problem since you need more wraps for the same resistance (all other parameters begin equal.).

 

[UncLeJunkLe]

Just to put a Qualitative Context to all this... How Accurate / Precise do you believe your Mod is (if that is what You are Using to Measure Resistance and Voltage) when it comes to Actual vs Displayed Ohms and Volts ?

I tried on various mods and they all do the same jumping on SS. Cool resistance on the 2 meters I have pretty much show same as mods' cool coil resistance. Accurate? No way to tell for sure. Consistent across various devices? Fer sher.

 

[UncLeJunkLe]

My question to you @zoiDman, being that you are an avid SS wire user, do you get ohms jumping up on SS wire upon firing? If so, how high a jump do you get max?

 

[zoiDman]

I tried on various mods and they all do the same jumping on SS. Cool resistance on the 2 meters I have pretty much show same as mods' cool coil resistance. Accurate? No way to tell for sure. Consistent across various devices? Fer sher.

Just say'n that you throw a Very (Very) Small +/- into the mix for Tolerance / Inaccuracy and it seems like you can be on Either Side of that Envelope you talked about.

 

[zoiDman]

My question to you @zoiDman, being that you are an avid SS wire user, do you get ohms jumping up on SS wire upon firing? If so, how high a jump do you get max?

Sure. The Resistance is going to Increase as the Coil Gets Hotter. That Isn't something that Only Applies to SS. But How Much? And How Accurate would My Measurement be? I don't know?

I just have No Realistic Way to measure it. Or to know when my Mod is Boosting? Or when it is in Buck Mode?

When you do a Build like you described, are you seeing a Noticeable Drop in Performance because your Mod can't output higher Voltage that the Battery has?

 

[zoiDman]

Sure. The Resistance is going to Increase as the Coil Gets Hotter. But How Much? And How Accurate would My Measurement be? I don't know?

I just have No Realistic Way to measure it. Or to know when my Mod is Boosting? Or when it is in Buck Mode?

When you do a Build like you described, are you seeing a Noticeable Drop in Performance because your Mod can't output higher Voltage that the Battery has?

ETA: BTW I ran with Mechs for about a Year and a Half using an Almost Identical Single Coil Build as you mentioned. I never really felt that Hit was being adversely effected by a concept that the Resistance Increases as the Coil Gets Hotter.

It was just the Hit You got. Good. Bad. Or Indifferent.

 

[zoiDman]

Double Post

 

[TrollDragon]

Also, the reason I am dabbling in SS is not for TC, rather because in order to get at least 3 wraps on 28g wire, 2.5-3mm, at low ohms like 0.3-0.4, Kanthal and Ni80 simply won't do since # of wraps would be like 2 wraps lol. SS wire somewhat solves that problem since you need more wraps for the same resistance (all other parameters begin equal.).

A sub 0.5 ohm build with 28ga is difficult unless you are using parallel coils, stepping up to 26ga would be a better choice.

If you are steadfast on 28ga, Nifethal 52 would give you 6 wraps of 28ga on 3mm for 0.337Ω, if you went to Nifethal 70 you could have 12 wraps for 0.352Ω. NiFe's resistance goes up when heated just like SS.

A good source for NiFe.
Resistance Heating Wire

 

[TrollDragon]

I run 6 wraps of 26ga N80 (2.5mm/0.62Ω) at 25W in my MTL Steam Crave tank, awesome vape and I get 3 days runtime using a dual battery mod.

 

[UncLeJunkLe]

NiFe's resistance goes up when heated just like SS.

Thanks. That is all I really initially wanted to know.

 

[ShamrockPat]

If so, how high a jump do you get max?

IMHO that would be ~21% from the initial cold reading for a pretty warm vape Using most mods 600°F limit that would still only be ~25% rise.

 

[Letitia]

Also, the reason I am dabbling in SS is not for TC, rather because in order to get at least 3 wraps on 28g wire, 2.5-3mm, at low ohms like 0.3-0.4, Kanthal and Ni80 simply won't do since # of wraps would be like 2 wraps lol. SS wire somewhat solves that problem since you need more wraps for the same resistance (all other parameters begin equal.).

Could try a staged coil using ni80/ss.

 

[UncLeJunkLe]

IMHO that would be ~21% from the initial cold reading for a pretty warm vape Using most mods 600°F limit that would still only be ~25% rise.

That's HUUUUGE considering the reason why I'm asking the question. Non-step-up mods are usable if you are willing to work within it's limits. Otherwise they are a pain in the arz and even unusable to a lot of vapers.

 

[UncLeJunkLe]

Could try a staged coil using ni80/ss.

I don't even know what that is. I'm strictly a round wire kinda vaper.

 

[Letitia]

I don't even know what that is. I'm strictly a round wire kinda vaper.

Staged (or parallel) coil is simply wrapping 2 different wires together. You can use simple round wire paired up.

 

[UncLeJunkLe]

Staged (or parallel) coil is simply wrapping 2 different wires together. You can use simple round wire paired up.

Oh, I didn't know there were 2 names for the same coil type. What happened, did someone trademark "parallel coil" and force everyone by court order to use a different word?