Lower ohms/ Standard Ohms/ and higher ohms

[DoubleTap1]

I came accross this by accident when the build I made came out at 2.3 ohms and I wasn't sure if I should remove it or just give it a try. So I Googled, "are my ohms to high?"
For me I vape all of my RTA's between 1.2 and 1.8. Currently running my kayfun V4 with 28g at 1.8 ohms 15 to 16 watts; good vapor, good taste and best of all no dry hits. RDA's are a different story, meaning I usually shoot for .5 ohms to .3 ohms. But I've noticed one of the most common problems people talk about are dry hits. Yes wicking has a lot to do with it, but so does the coil we build. I have noticed with my Erlkonigin, Squape, my Rose and Kayfun V4 that if I run with a higher ohms coil I avoild dry hits, espicially since these Atty's having such small decks and needing very little wicking.
The current trend is sub-ohming and people follow trends, so low ohms is better; maybe not for many of these RTA's. If you're not using a dripper and you have one of these dainty finicky RTA's try moving your ohms toward the higher end and lower your watts. His happy spot is a little to cool a vape for me, but I get what he is saying, it makes sence. Low ohms burn hot, hard on coils, use more juice and puts a premium on wicking to the point the wick can't keep up.
If nothing else his opinion is interesting. If you've tried everything you could with wicking and still getting dry hits, give it a try.
What Ohms should I choose?

 

[DaveP]

I'm usually at 1.4 to 2.0 ohm with 28ga coils on my Kayfun v4 and no more than 10 watts. I've not experimented much with dual coils other than the off the shelf coil heads for high end dual coil atties like the Nautilus and the Aerotank.

Sub ohming at high watts requires a battery that can take the load.

For example, 50 watts with a .5 ohm coil requires 10 amps at 5v. With a 2 ohm coil, you can get 50 watts at 5 amps/10 volts. Even then, many mods top out at 10v, so somewhere in the middle might be a good place to start.

 

[KenD]

I'm usually at 1.4 to 2.0 ohm with 28ga coils on my Kayfun v4 and no more than 10 watts. I've not experimented much with dual coils other than the off the shelf coil heads for high end dual coil atties like the Nautilus and the Aerotank.

Most people who vape high watts in the 30 to 50 watt and higher range tend to use 2 ohm and higher coils, just because of the amp load from sub ohm coils.

For example, 50 watts with a .5 ohm coil requires 10 amps at 5v. With a 2 ohm coil, you can get 50 watts at 5 amps/10 volts. Even then, many mods top out at 10v, so somewhere in the middle would be a good place to be.

Regulated devices don't work like that. The amp draw is dependent on the watts and the charge level of the battery, resistance doesn't matter. In contrast to mech mods the amp draw increases as the battery charge gets lower, due to the battery being pushed harder to provide the same wattage.

 

[DoubleTap1]

I'm usually at 1.4 to 2.0 ohm with 28ga coils on my Kayfun v4 and no more than 10 watts. I've not experimented much with dual coils other than the off the shelf coil heads for high end dual coil atties like the Nautilus and the Aerotank.

Most people who vape high watts in the 30 to 50 watt and higher range tend to use 2 ohm and higher coils, just because of the amp load from sub ohm coils.

For example, 50 watts with a .5 ohm coil requires 10 amps at 5v. With a 2 ohm coil, you can get 50 watts at 5 amps/10 volts. Even then, many mods top out at 10v, so somewhere in the middle would be a good place to be.

Yes true what you are sayin. However the Thread is aiming towards those who have these high end Atty's complaining about dry hits. Point being, try turning it down. The guy makes a clear case about using lower ohms in a day where the trend leans toward sub ohms.
I make sub ohm builds for my Drippers. My Rose, Squape, and Kay V4 don't work well with low ohm coils.
I thought it would be a good idea for newer vapors who are buying atties like this and those complaining about dry hits, to know they should experiment with a higher ohm coil. Most newer vapors read a lot about low ohm builds and find that a .5 build in their Rose or Kayfun tank isn't the same as a Kanger sub-tank and can't figure out why they keep getting dry hits.

 

[DaveSignal]

Regulated devices don't work like that. The amp draw is dependent on the watts and the charge level of the battery, resistance doesn't matter. In contrast to mech mods the amp draw increases as the battery charge gets lower, due to the battery being pushed harder to provide the same wattage.

Slight correction: on a mech or unregulated mod, amp draw decreases as battery charge gets lower, as per ohms law.

 

[evan le'garde]

I would imagine people who are moving up from cheaper tanks and are used to higher ohm's would have the brains to stick with it. I still build coils on my Russian 91% with 32awg kanthal that come out at 2.5 ohm's. And i don't expect the Russian to create more vapour than it does because that's not why i bought it. The same goes for the kayfun v4 (authentic) i've just ordered from Cloud9. Though i'll be using thicker wire, more wraps but still be making coils which are at least 1.5 ohm's. I do get the impression some or a lot of people just want more vapour, then more and more and forget why they started vaping in the first place. For me, first thing in the morning i couldn't possibly sub ohm. What i need at that time of day is a cigarette. And the closest thing to that is an atty with a tight draw and a high ohm coil. Once that stops working for me, about 11am, then i'll break out something more powerful. There is a lot of validity in what you are saying when it comes to using high ohm builds. Spending more money on high end atty's doesn't mean those atty's will produce large clouds of vapour.

 

[DaveSignal]

With a regulated mod, it really doesn't matter as long as you can turn up the volts. If using a mech, lower gauge wire needs to be lower ohms to work right. Same goes for adding more coils on an unregulated device. If one coil is great at .5 ohm, two coils should be .25 if you are expecting them to heat up in the same time.

 

[KenD]

Slight correction: on a mech or unregulated mod, amp draw decreases as battery charge gets lower, as per ohms law.

Yes, for mechs (which are of course unregulated), but not for regulated devices. What are you thinking of when you differentiate between mechs and (other) unregulated mods? Technically, yes, there's a difference, but for the sake of this discussion mech and unregulated are pretty much interchangeable.

 

[DaveSignal]

Yes, for mechs (which are of course unregulated), but not for regulated devices. What are you thinking of when you differentiate between mechs and (other) unregulated mods? Technically, yes, there's a difference, but for the sake of this discussion mech and unregulated are pretty much interchangeable.

A true mech is a tube or box with no wires. A mech is unregulated. A box with wires and/or a MOSFET is unregulated too, but not a mech.
I was correcting your post where you said:
-removed-

EDIT: whoops... i am sorry. I guess you were actually talking about regulated mods the whole time. I thought you were referring to mechs for a minute. I misunderstood.

 

[herb]

I always run everything at higher ohm's , even RDA's , to me i just get a better vape and thats what matters to me.

 

[stvn77]

nice thread !!!

 

[NetteG]

I have wondered about this with building higher ohms coils. My husband and I are coming off of standard resistance cartos (2.8 to 3.1 give or take) and to me the first builds at 1.5 ohms using 28g kanthal seem very light ... we're both not cloud chasers by any means and I like to keep my wattage a little lower, currently vape with decent taste (again, I understand carto mutes flavor comparably speaking) but I run a 3.0 cart at 7.5 watts and 4.8 volts ... the sweet spot I found. So it can't hurt to run the coil build on the kayfun up a bit higher right? Most that I read out here say they stay between 1.4 to 1.9 ohms. I guess it truly is all just trial and error at what you prefer?