small vs large diameter coil

[keepitgoin]

I still wrap around a Small Blue Screwdriver and am not sure what diameter that is. I really should get some coiling rods as I'd like to get into Diameter/Flavour comparison!
Probably won't bother though, as I've been Vaping a while now, and the only change's I've made in my Coiling is to try Flat Wire.
I think it's making a difference, but as we all know, taste is very subjective!

 

[greenbrucelee]

Morton Oen (look on YouTube) did a series of experiments looking at juice consumption and discovered that it is relative to the total mass of the coil and wick combined... larger Id coils use more juice so if you want to cut juice consumption use smaller id coils (eg 2.5mm). Having said that building to the size of the atty is good, as has already been stated sometimes a 2.5mm coil won't allow you to fill the wick ports and sometimes 3mm coils will mean that you're going to be overstuffing them.

I drip anyway so I will see if I have to drip more.

 

[scrumpox]

I reckon coil ID matters less to MTL vapers than those who DL. Most MTL devices will have a tight, well targeted airflow and small decks - life is much simpler.

Atties with more airflow have larger decks, a larger airflow stream and more juice flow. There's a truism in "you can only build as big as you can wick", good wicking is essential for a saturated vape ... as mentioned, take care with wick tails not to overstuff the juice channels. Building bigger often means you need to trim down and/or thin out the tails.
I usually make a call on both coil ID and coil length by looking at the airflow and the available space on the deck. Coils need to be big enough and positioned well to minimise airflow bypass - to ensure all the air is hitting the coils. Fresh air which misses the coil(s) and travels straight up the chimney will reduce the flavour.
With dual coils you need to pay attention to the space between the coils; building too big can leave too little space for cooling and you'll find your coils will cake up where's there's insufficient airflow to take the vaporized juice away.

Coil mass and the heat flux that can be achieved is another factor, perhaps another topic. When building, coil ID is only one variable ... try a few builds with any new atty until you find your sweet spot, don't dismiss an atty just because the first build doesn't work well.

 

[greenbrucelee]

I reckon coil ID matters less to MTL vapers than those who DL. Most MTL devices will have a tight, well targeted airflow and small decks - life is much simpler.

Atties with more airflow have larger decks, a larger airflow stream and more juice flow. There's a truism in "you can only build as big as you can wick", good wicking is essential for a saturated vape ... as mentioned, take care with wick tails not to overstuff the juice channels. Building bigger often means you need to trim down and/or thin out the tails.
I usually make a call on both coil ID and coil length by looking at the airflow and the available space on the deck. Coils need to be big enough and positioned well to minimise airflow bypass - to ensure all the air is hitting the coils. Fresh air which misses the coil(s) and travels straight up the chimney will reduce the flavour.
With dual coils you need to pay attention to the space between the coils; building too big can leave too little space for cooling and you'll find your coils will cake up where's there's insufficient airflow to take the vaporized juice away.

Coil mass and the heat flux that can be achieved is another factor, perhaps another topic. When building, coil ID is only one variable ... try a few builds with any new atty until you find your sweet spot, don't dismiss an atty just because the first build doesn't work well.

Thanks. Makes sense.