Ohms and a APV (eVic VV/VW) help please

[Phone Guy]

Ok...let me start with I'm very comfortable around electronics. I've been in IT fields for years, and it's been my personal obsession since I was a kid. Point being I'm comfortable talking stuff apart, soldering them back together again. While I'm new to the vaping community, I'm no stranger to hacking, building and component level repair work.

Ok moving on. I'm trying to weed thru the abundance of bad or misleading information I've read online and the stuff I'm hearing in the local vape shops.

So on RBA tank atomizer like the genesis style as an example... do you want 1.5 ohm coil? Or a 3.7 ohm coil?

Here's where it get "misinformed", I was told the higher the ohm load (ie: 3.7 ohms) would handle more power easily. Let's say 5.0volts from my evic...whereas a coil build at 1.5 ohms couldn't handle that kind of power (5v) I'd have a hard time pushing it past like 4v max.

This had not been my experience. Seems like the lower ohm but greater>1.0 ohm accepts 5v and gets red hot instantly.

Where the 3.7 ohm could also accept 5v but it takes considerably longer to hit that red hot glow (if it hits it at all within the 10 seconds safety release of the evic)

So I'm experimenting a little with a couple of genesis tanks, taifclon/kayfun, style tanks. And I want to get as much info about them and my battery to make the best judgement.

None will be used on simple mechanic mods. All of our mods are ApV, eVic, I taste SVD, and a couple more generic but VV batteries.

Since any of my batteries can adjust voltage and or wattage with a click. What kind of builds gives best results?

Right now the test setups are an RSST, AGA-T2, Fogger v1, Scar by smoke tech, and a couple generic dippers that can be single or dual coil.

It's late, so my message might not be making sense to you? It sounds right on the money for me right now being half asleep and a little buzzed from cold medicines...LMAO.

Sent using my typewriter

 

[MattyB1503]

@Mobile Phone Guy,

TL;DR

If you can sum up your question I'll help you out before I hit the sack.

 

[Thrasher]

ummm, this is where it gets a little tricky. the resistance by itself isnt the deciding factor. things like response time of the coil, thickness of the wire, preferred voltage/ power output etc.

On a regulated mod (vv vw) i usually shoot for the 1.5-2.0 ohm range using thinner wire. 4/5 wraps of 32g sometimes 30g around 4 volts, because the mod cannot throw out a lot of power and you need the coil to get hot without waiting 7 seconds. this is what happens say with a 28g coil using 8/9 wraps for 2 ohms. there so much wire the response time and power output will be terrible, it will vape but you will wonder why its so anemic as you wait for the coil to get hot.

in the case of a mechanical you have much more power at your disposal so I head for the .8 to 1 ohm range using 28g wire. with the increase in power output the thicker wire still heats up within a reasonable time.

there are other deciding factors but I found power VS response time on the chosen mod to be the one I worry about first. and usually always stay in the 4 or 5 wraps range and adjust the wire itself for resistance. there also all these alternative builds like micro coils and such which do change thing up slightly but im referring to plain jane wrap and go results.

once you get experience playing and understanding the differences in the wire VS resistance you can pretty much tune any device to perform the same under different conditions

 

[NicoHolic]

The eVic outputs 5V max with a 2.5A max current for 12.5 watts. If you use Ohm's Law and do the math, you'll find it's maximum power achievable is with a 2.0Ω coil and falls off on either side of that.

edit to add:

You should find it's power output should be:
…at least 8 watts from 1.3Ω to 3.1Ω and
at least 10 watts from 1.6Ω to 2.5Ω

 

[Phone Guy]

Ok so your saying a 2 ohm load in theory should be the sweet spot for the evic battery?

One of the builds last night was 10 wrap micro coil using 28ga yielded a 1.4 ohm coil. On the dry burn test it glows red beautifully from the center outward to the edges (legs where the posts are)

I'm just having a hard time figuring out what's ideal still.

Sent using my typewriter

 

[NicoHolic]

A 2 ohm load will let you get max power out of an eVic, but that max power may not be the "sweet spot" for any juice you own. From an electrical perspective, if you find the sweet spot of a particular juice to be 7.5 watts with your current coil, for example, then you should be able to get the same with a 7.5 watt setting on any resistance coil. But the aficionados tell us that isn't the case. I'm not an aficionado. You can try a lot of different wattage/voltage settings with a lot of different coils searching for better, and often finding worse.

 

[LeoRex]

One of the builds last night was 10 wrap micro coil using 28ga yielded a 1.4 ohm coil. On the dry burn test it glows red beautifully from the center outward to the edges

You are all set... If the coil fires, it fires. You are not going to get a better vape than that microcoil... I have the exact build in my IGO-l RDA and it's an awesome vape.

Shoot for around 3.8v as a starting point.

start it at, maybe, 4v. Too hot, drop it down...