Closed Airflow vs. Open Airflow (MTL)

[DonMatteo]

Hi all.
So I've been vaping for a good while now but not MTL.
My question is: Would fully closed airflow, on low wattage, burn the coil quicker? Meaning, having to change that coil earlier than usual.
That question came up to my mind when I switched hardware. I was on non-adjustable airflow (let's call it H1) and now I'm on adjustable one (this one will be H2). The H1 had pretty big airflow for a MTL device but 0.8ohm coil lasted me over 2 weeks. Then I bought the 0.8ohm coil for H2 and I tasted burnt after 1 week with airflow fully closed. Of course I did change liquids which could make a big impact on that, but let's start with airflow first.
I hope that makes some sense
Any replies would be appreciated.

 

[440BB]

Hi all.
So I've been vaping for a good while now but not MTL.
My question is: Would fully closed airflow, on low wattage, burn the coil quicker? Meaning, having to change that coil earlier than usual.
That question came up to my mind when I switched hardware. I was on non-adjustable airflow (let's call it H1) and now I'm on adjustable one (this one will be H2). The H1 had pretty big airflow for a MTL device but 0.8ohm coil lasted me over 2 weeks. Then I bought the 0.8ohm coil for H2 and I tasted burnt after 1 week with airflow fully closed. Of course I did change liquids which could make a big impact on that, but let's start with airflow first.
I hope that makes some sense
Any replies would be appreciated.

Generally, lower airflow will make a hotter vape on the same resistance coil, which could shorten coil life. MTL normally involves a combination of lower airflow and higher resistance. Assuming the liquids are a similar PG/VG ratio and have about the same amount of sweetener, they wouldn't be much of a factor. If the liquid you are using is darker and sweeter than the H1 liquid, it would contribute to a shorter life and getting that burnt taste sooner.

A higher ohm coil or opening up the airflow somewhat should help. Good luck!

 

[DonMatteo]

Generally, lower airflow will make a hotter vape on the same resistance coil, which could shorten coil life. MTL normally involves a combination of lower airflow and higher resistance. Assuming the liquids are a similar PG/VG ratio and have about the same amount of sweetener, they wouldn't be much of a factor. If the liquid you are using is darker and sweeter than the H1 liquid, it would contribute to a shorter life and getting that burnt taste sooner.

A higher ohm coil or opening up the airflow somewhat should help. Good luck!

The thing is I prefer my MTL vape a bit more restricted so I’m kind of playing with the airflow now. Trying to open it be a tiniest bit possible, so we’ll see how will it come out.
Thanks for the reply

 

[Superuser187]

And i just want to add also there is the factor of how good the coil is absorbing the juice u use...

So its many variables that can make the coil get burned faster...
The airflow the juice the cotton of the coil the wattage and the way u inhale on any given atomizers all that with time u gain experience and learn how to adjust to your liking and make it work efficiently....ofc sometimes so e coils are just not well made by manufacturer....

What i would do is first make sure the juice i use is proper for the coils i use...
Then i would just adjust the airflow to my liking and if i feel this coil wiu that airflow produces very warm vapor or bets burned fast i would go for a higher ohm coil that most likely use also lower wattage to match the resticted airflow i like better ajd be able to be cooled down properly...

Sometimes tho some coils are just not well made by manufacturer or there is not resistance to match to my liking..

 

[ShowMeTwice]

I vape MTL, RDL, DL with several RBA's in rotation and roll my own coils. Currently I have a 2.5mm ID 26/36 316L clapton at 0.45 ohms in a Kayfun lite 2019. Wide open a KFL19 is ~1.8mm AF and closed down it will do a "proper" MTL (or tighter). I use that on a DNA mod running TC so I am able to control the temp (cool/warm) of my vape.

My coils last a minimum of 6 months. Wicks last, depending on if I'm using cotton or rayon, a minimum of 14 days.

I DIY my juice (50/50 to 20pg/80vg) and am no fan of using sweeteners (IMO, don't need to, if one knows their flavors).

Good luck

 

[Falconeer]

A very interesting thread.

I stopped smoking and started vaping nearly six years ago - and I'm solely a MTL Vaper who doesn't use sub ohm coils.

I started off with a Nautilus Mini tank which I used for years, and still do regularly, and used it with the airflow fully open. When I first got a Zenith tank I found it too airy though and used it with only one to two holes open. When I got a Sceptre Pod I closed it right down.

Using unflavoured or menthol clear liquid I consistently get at least six weeks from a coil. Other than one pack of duff coils I have never had a coil burn out - they just leak at the end of their lives.

I really don't know if there is a definitive answer to this query, but I'll follow this thread with great interest - so thanks for starting it.

 

[440BB]

I like to measure coil life in terms of how many ml of liquid I go through. It makes comparisons of coil life easier among different vaping styles. My daily setup is a tight draw mtl at low wattage with 2+ ohm coils. I go through about 150ml per coil using a mild mint menthol mix.

 

[tj99959]

I wrap new coils once/month (even if they don't need replacing), and I still use silica wicks (Ekowool) so I never have a burnt taste. My coils are always in the 1.6-1.8 ohm range.
In my atomizers (A7) a 0.8 ohm coil would be way to hot to vape!