Lower ohm = shorter harder pull?

[Apec]

I have read that with a lower ohm coil you want a shorter harder pull? I use various clearo's and recently went down and love 1.5-1.8 ohm coils on my MVP2.
I read that with the lower ohms, longer pulls, especially if your chain vaping will burn the coils.

When I began vaping I was told longer softer pulls.

 

[Baditude]

The resistance has little to nothing to do with the type of draw technique you should do.

A longer gentler pull allows the wick time to supply juice to the heating coil.

 

[GaG8tor]

I just now switched from a 1.8 ohm to a 2.2 ohm coil in my Aspire BDC. Cranked it up to about 4.5 volts and WOW!Major TH and HUGE clouds. And this is just from a Vision Spinner. Bad could you explain how resistance and voltage affects the volume of vapor? Hope I'm asking this correctly. The whole numbers thing just confuses the heck outta me.

 

[PaulBHC]

Add to that confusion two coils. A BDC that shows 1.8 on the MVP, is that 3.6 total or still 1.8 but half the battery life? Does a 2.2 take less battery life to give the same taste and cloud at a given volt or watt setting? Or do you raise drain by increasing the v/w?
If I have a non vv/vw am I better with a single high ohm or a dual low ohm or what?

 

[Baditude]

Dual coils are literally two coils, so the battery needs to power twice the number of coils. Theoretically two coils should produce twice the vapor, however with factory-made coils I've not noticed this practically. A multimeter/ohm meter will read a 1.8 ohm dual coil as if it is a 1.8 ohm single coil, it can't distinguish that there are two coils being read. However, that 1.8 ohm is actually two 3.6 ohm coils.

Low resistance coils use more amps from the battery, therefore they drain the battery more than standard resistance coils.

Lower resistance coils burn hotter than standard resistance coils, and theoretically should produce more vapor. Picture a pan of water on a stove: lower heat will not make much steam (vapor), higher heat will produce more steam.

Lower resistance coils are most often recommended for fixed voltage devices to simulate the higher voltage capability of VV regulated mods. Standard/higher resistance coils are most often recommended for VV regulated mods because they have a wider range of voltage.

 

[pdib]

I have read that with a lower ohm coil you want a shorter harder pull? I use various clearo's and recently went down and love 1.5-1.8 ohm coils on my MVP2.
I read that with the lower ohms, longer pulls, especially if your chain vaping will burn the coils.

When I began vaping I was told longer softer pulls.

It might be true, to some extent, in your case (1.5-1.8Ω). It's definitely true with very low resistance coils. With rebuildable atomizers, people tend to enlarge the air hole as their builds get lower in resistance. If your air hole is of fixed size, then, yes, you can accomplish more air in the mix by drawing on it harder. Basically, with unregulated devices, and subΩ builds, one is increasing the power, and with it one must increase the amount of juice available and the amount of air passing over the coil. As long as these things are kept in balance, the vape at 1/2 an ohm can be very pleasant (very FULL but smooth and not hot).

 

[Ryedan]

I have read that with a lower ohm coil you want a shorter harder pull? I use various clearo's and recently went down and love 1.5-1.8 ohm coils on my MVP2.
I read that with the lower ohms, longer pulls, especially if your chain vaping will burn the coils.

When I began vaping I was told longer softer pulls.

In the range of resistance between say 3 and 1.8 ohms I would say not much, as Baditude said keep your draw about the same. Part of it also is that those devices will probably not handle the change of air volume well.

If you get into rebuildable attys at less than 1 ohm on mechanical mods, or more than about 15 watts using regulated mods, you do need to draw more volume of air as pdib said. IMO taking lung hits is required over about 20 watts or you're just wasting the power for no gain.

It's not really about burning coils at higher power, it's about keeping the wick wet or you'll burn juice and get burnt hits.

 

[PaulBHC]

Bad's post goes totally against my brain's way of thinking. Higher resistance should create more heat, like pushing harder on the car brake pedal. Guess that is why electric things have always confused me. DC isn't as bad as AC. AC is just magic.

 

[GaG8tor]

Thanks bad. That kinda clears it up.

 

[TheAmazingDave]

Bad's post goes totally against my brain's way of thinking. Higher resistance should create more heat, like pushing harder on the car brake pedal. Guess that is why electric things have always confused me. DC isn't as bad as AC. AC is just magic.

It's all about the current.

Low resistance on a fixed voltage will draw more current than high resistance.

Given the same fixed current, then yes, you'll get more heat from higher resistance. Current is a function of voltage and resistance, however, so this isn't the case in practice.