Increase in resistance and mass, yet warmer than usual vapour and production?

[conanthewarrior]

Hi everyone, I hope you are all OK.

I have a quick question in regards to my builds for my mechanical mods. I had settled on dual coils, SS316L 2.5MM at around 0.2-0.25 as I found this to be a nice area for me, until yesterday when I made a slight difference whilst building.

I had a bit of a headache, so was not as focused as normal, and used a 3MM bit instead of my usual 2.5MM bit, and also added an extra wrap each side. This bought me up to around 0.32-3 when cool, slightly higher after a hit. I know this as I always test my builds out on a regulated mod first before putting it on my mech.

I decided to just use this build, and found that the vape was actually warmer than usual, even though the resistance was higher and there was more wire to heat up.

I actually prefer this to my normal build, so think I will use this in future. I usually vape regulated mods, and mechs are more a bit of fun for me, so I am unsure if it is the increase in ID that has caused this?
I would of expected the vape to run cooler with the increase in resistance, not warmer. I have never come across increasing my resistance actually making more and warmer vapour on a mech before.

So, does anyone have a simple reason as to why this is? It is probably something simple I have overlooked or forgotten I have learned in the past, or could even be something new I wasn't aware of but should of been.

Thanks, Conan.

 

[ej1024]

Gauge?


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[Zamazam]

You might be heating up the coil longer to compensate, time your hits and see if it is the case.

 

[conanthewarrior]

Gauge?


I ️

Doh sorry! 26G, I have found this to be my favourite to use, almost all of my builds are now 26G SS316L apart from my bigger builds for my regulated mods.

You might be heating up the coil longer to compensate, time your hits and see if it is the case.

That is the strange thing, it is just my usual 4-5 second hit. The coils are ramping up fast, a lot faster than I expected from past experience.

Not that I am complaining by any means, if this build works better for me I will stick too it, just found it a bit odd how it is performing better with an increase in both resistance, and mass.

 

[conanthewarrior]

EDIT: My apologies, I posted the same thing twice- must of had an issue with the page loading.

 

[ej1024]

It's weird to me.. I just mech mode yesterday after years of regulated mode, and I tried 26ss 10 wraps 3.0 Id, cane out to .25 and I found it to WEAK VAPE... the only thing I can think right now is that you probably TC? Right now, I have .12 22g ni chrome 5/6 wraps 3.0 I'd and I found it to be ok with me... I don't know men, I think if 26 g ss is warm with you, you have to go higher gauge? Don't know bro, ur not a newbie to this so I'm assuming you know what to do with this situation


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[ej1024]

And I just wanna add,
I'm not sure what wattage you vape on regulated mode...
Mech mode will give you full power on a full charge 18650, that's 4.2 volts
70-71 watts 16.8 amps on a single 18650...


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[conanthewarrior]

It's weird to me.. I just mech mode yesterday after years of regulated mode, and I tried 26ss 10 wraps 3.0 Id, cane out to .25 and I found it to WEAK VAPE... the only thing I can think right now is that you probably TC? Right now, I have .12 22g ni chrome 5/6 wraps 3.0 I'd and I found it to be ok with me... I don't know men, I think if 26 g ss is warm with you, you have to go higher gauge? Don't know bro, ur not a newbie to this so I'm assuming you know what to do with this situation


I ️

You are right, a lot of the time I am using TC mode when I can on my regulated mods, but I do enjoy vaping at higher power settings in wattage mode sometimes. Maybe where I am used to TC more I am finding this fine, but did not expect an actual increase in performance as that goes against everything I know.

It isn't a super warm or hot vape, it is actually nice so I am not complaining , I just found it strange this has happened, as like you say I am not exactly new to this so wondered if anyone knew why this is happening.

 

[ej1024]

You are right, a lot of the time I am using TC mode when I can on my regulated mods, but I do enjoy vaping at higher power settings in wattage mode sometimes. Maybe where I am used to TC more I am finding this fine, but did not expect an actual increase in performance.

It isn't a super warm or hot vape, it is actually nice so I am not complaining , I just found it strange this has happened, as like you say I am not exactly new to this so wondered if anyone knew why this is happening.

AND THATS WHY I DONT TC! tc gives me cool unsatisfactory vape... FOR ME!
a lot of folks likes COOL VAPES!
for me it's all good to experiment sometimes!


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[conanthewarrior]

Hmm, I think I may well of made a mistake here, building with a headache wasn't the best idea.

I just checked the resistance again, and it seems to be around 0.27, which isn't far off where I usually build. The mod I used yesterday after building may of been reading the resistance off, so in reality I have only increased my ID- counting the wraps I haven't put an extra one in like I thought, just where I was unfocused and could tell each side was even I must of assumed I had.

I guess from now on I will use 3MM ID coils. I was sure I settled on 2.5MM after a lot of experimenting, maybe my taste has just slightly changed and I prefer the slightly larger coil.

 

[conanthewarrior]

AND THATS WHY I DONT TC! tc gives me cool unsatisfactory vape... FOR ME!
a lot of folks likes COOL VAPES!
for me it's all good to experiment sometimes!


I ️

Yeah TC definitely isn't for everyone, I find it gives me a nice vape, that is warm enough for me, but I realise to some people this could be what they class as a cool vape.

It definitely is good to experiment, I really need to start doing that again. I sort of settled on this build after a long time experimenting, but this shows I still enjoy different things.

 

[HondaDavidson]

Simply a case of more metal results in more Heat Capacity......

Study steam-engine.org.

Note Heat Flux or surface temperature and Heat Capacity or ability to transmit heat......

Getting a good vape is all about the balance of those 2 numbers.

Sent from my SCH-I605 using Tapatalk

 

[Brad Mitchell]

What Honda said. And I can't help but wonder if it's because the coil is bigger that it seems warmer. The 2.5 took up less space in the chamber. That might be the same thing Honda said but in layman's terms lol.

 

[ej1024]

The op is NOT a newbie folks
Just
FYI


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[conanthewarrior]

Simply a case of more metal results in more Heat Capacity......

Study steam-engine.org.

Note Heat Flux or surface temperature and Heat Capacity or ability to transmit heat......

Getting a good vape is all about the balance of those 2 numbers.

Sent from my SCH-I605 using Tapatalk

I do understand those things, thank you for the advice though.
The heat flux is actually lower which is why I am puzzled to what is going on here. Also a 2.5MM vs 3MM coil assuming the same amount of wire and resistance has the same heat flux.

All I can think is similar to what @Brad Mitchell said, and the larger coils seem warmer due to their space in the chamber. It is not something I have ever come across before, I settled on that build pretty recently after many, many builds in various RDA's. I found it to be a balance that worked well for me.

It may be with this certain RDA the slightly larger ID coils just are better. I do still experiment, but with the amount of things I have now it is often with different RDA's and tanks as I don't have time to rebuild 100 or so at once lol.

 

[HondaDavidson]

A low HF coil can transmit more heat on a High Capacity coil than does a Heat Flux low heat capacity coil.



Sent from my SCH-I605 using Tapatalk

 

[Swerved]

Just for curiosity sake, you said you were using TC on the regulated mod you tested the coil with. Did you by chance have the resistance locked at what it should be for the 'normal' coil you would make? If the mod thought the coil resistance was something other than what it actually was, it could change things. If the mod thinks you had a .25 ohm set up and you actually had a .35 setup with it locked @ .25, then it is going to think the coil is cooler (since resistance is used by the mod to calculate temp) than it actually is and use more power to heat it. This could explain the ramp up time and warm vape... maybe?