What is the advantage of a smaller microcoil?

[Waddle]

What is the advantage of saying wrapping a 2mm vs. 2.5mm coil (assuming same Ohm)?

In terms of vapor I see no difference on my Russian 91%. I can only assume that its a faster heat up time. Improves battery life?

I can also see where a nano coil (1mm) might come in to play if you are using dual coils on a small deck.

 

[Andrew1919]

well if you do the same amount of wraps, using the same gauge kanthal, but one around the 2mm and one around the 2.5mm, the coil wrapped around the 2mm should be lower resistance. this is because (since the circumference of each wrap will be less) less wire is being used on this coil. Lower ohms means more vapor, it heats up faster. However with lower ohms, your battery life will actually decrease. so I'm not sure what you mean when you say "assuming same ohm?"

 

[Waddle]

Well I can wrap a 1.5 ohm coil on a 2mm or 2.5mm drill bit. The latter requires less coils with the same gauge wire.

 

[Added]

If you're talking the same Ohms then the smaller diameter coil will give you a greater surface area ( wider coil ) than a larger one. Covering more cotton, or what ever you wick with. Gives the coil the ablity to vaporize more juice at once.

 

[Andrew1919]

Well, there is not really one "best" size to wrap around or "best" build in general. It comes down to personal preference. Experiment with both, and see which one you like better. Generally, I like the flavor of smaller coils (wrapped around a smaller screwdriver or drill bit) versus larger coils, and I like how these smaller coils perform. Plus if you wrap around the 2mm, you should be able to do more wraps than with the 2.5mm for the same ohm readout. This means that you get more surface area with the smaller coil, and you can get more vapor. But whatever you like best is what you should use.

 

[tayone415]

What is the advantage of saying wrapping a 2mm vs. 2.5mm coil (assuming same Ohm)?

In terms of vapor I see no difference on my Russian 91%. I can only assume that its a faster heat up time. Improves battery life?

I can also see where a nano coil (1mm) might come in to play if you are using dual coils on a small deck.

An advantage of using a smaller diameter is that it heats up faster, the larger the diameter the longer it takes to heat and the longer you have to fire. For some RDAs or RTAs a large diameter doesn't work depending on the available space of the design.

well if you do the same amount of wraps, using the same gauge kanthal, but one around the 2mm and one around the 2.5mm, the coil wrapped around the 2mm should be lower resistance. this is because (since the circumference of each wrap will be less) less wire is being used on this coil. Lower ohms means more vapor, it heats up faster. However with lower ohms, your battery life will actually decrease. so I'm not sure what you mean when you say "assuming same ohm?"

Lower ohms itself doesn't mean more vapor, there are other factors like surface area and heat and the airflow ratio and wicking is all involved. Lower ohms usually will drain battery quicker but if you are using a large macro coil and having to hold the button 2-3x as long as a lower resistance coil you're using up more battery that way and putting more stress on the battery.

 

[Waddle]

Got it! Smaller coils heat up faster, work better on a small deck, and cover more area of the wick for the same resistance. Thanks!

 

[Added]

If you're talking the same Ohms then the smaller diameter coil will give you a greater surface area ( wider coil ) than a larger one. Covering more cotton, or what ever you wick with. Gives the coil the ablity to vaporize more juice at once.

I forgot to add this to my post: Remember that what ever you wrap around is going to be the inner diameter, then add the wire width to that. Just something to keep in mind if you get into macro coils and are guessing at room and spacing inside your cap.

 

[Andrew1919]

Yes. Obviously many factors go into vapor production: airflow, surface area of coil, what kind of juice you are using, wicking, what your mod and atomizer are, how well charged your battery is, etc. But I was saying, with everything else being even, lower resistance usually means more vapor.

 

[The Ocelot]

They're fun to make. I get completely focused on making a perfect coil. So much more satisfying than crocheting.