.9 ohm on a regulated device!?

[mgmixology]

I've owned the Itaste VV V3 for just over 3 or so months now. I've been rebuilding my RDA with micro coils lately. 32 gauge kanthal usually hitting 1.5~1.8 ohms. I was in the local vape shop hanging out and we were talking micro coils. The subject of ribbon kanthal ( Flat not round ) came up and we were all wondering if you could do a micro-coil with flat ribbon wire. Also they were wondering what the lowest ohm the itaste would read without saying non. I didnt know the answer so i said probably .8 ohms. Anyways, sitting around bored today I decided to give my best shot at rebuilding my RDA with a ribbon wire micro coil. Not knowing what the ohms would come out to having never done this, I gave it 4-5 wraps of AWG 0.020X0.0040 around a 14gauge blunt tip from wizardlabs. Checked the ohms 3 times one minute apart to make sure no "floating" was going on. Got 0.9 every time. Fed some cotton wick through the micro-coil and its holding 24 drops of e-liquid.

Now, my experience with Flat ribbon wire is as follows;
1.5 round kanthal
compared to
1.5 flat ribbon kanthal

The ribbon wire seems to take more volts/watts than the round. This is my experience yours may differ.

Changed over to volts because variable wattage loses its magic touch at around 1.8 ohms. Having never rebuilt a .09 coil on the itaste i dropped it down to 3.3 V. Not knowing how this was going to turn out I loaded up my wick with some less desirable e-juice(18mg). I generally need 24mg for a nice solid throat hit....I took my first puff on this new build and nearly blew my pants off. Flavor was spot on (orange soda) and the throat hit was just what I look for. Great vapor production, great flavor, and great throat hit....the vaping dream right?

so im just really confused on what this little compact VV/VW device can handle.
It's not a mech, its a regulated device... I didnt even think it would fire with .9 ohms...
Anyways please chime in on this post!


^ I have an ego skirt it just wasnt on for this picture lol

 

[mgmixology]

no one is chiming in?

 

[Coastal Cowboy]

Hmm. I didn't think the VV would fire below 1.2 ohms.

Innokin's website is down (looks like it's been hacked), so I can't check the specs.

How does a coil that low affect battery life? I would think it'd go through that 800mAh capacity in pretty short order.

 

[BJ43]

.9 ohms at 3.3v is 12 watts. It will probably start giving an error at higher volts. IMO the only wick that really improves with a ribbon coil is the Ao, white ceramic wick, on all other wicks the round is better

 

[danny4x4]

The cotton might be too dense. Hence when you added in juice, it swelled, pushing the micro coils, which caused the resistance to go up. Therefore, your regulated device could fire. Have a look at the cotton exiting the coil. It's probably bulging out like Hercules.

That's what came to mind when I read your post. Might be the cause, or might not.

 

[mgmixology]

Hmm. I didn't think the VV would fire below 1.2 ohms.

Innokin's website is down (looks like it's been hacked), so I can't check the specs.

How does a coil that low affect battery life? I would think it'd go through that 800mAh capacity in pretty short order.

I've always thought higher res shortens battery life. like a 3 ohm coil set to max watts/volts would drain battery faster then a 1.5 at 4v

 

[mgmixology]

.9 ohms at 3.3v is 12 watts. It will probably start giving an error at higher volts. IMO the only wick that really improves with a ribbon coil is the Ao, white ceramic wick, on all other wicks the round is better

I've brought it up to 3.7v haha

Haven't used ceramic, only reason i was using flat as opposed to round was because we were not certain if you could micro-coil flat

 

[mgmixology]

The cotton might be too dense. Hence when you added in juice, it swelled, pushing the micro coils, which caused the resistance to go up. Therefore, your regulated device could fire. Have a look at the cotton exiting the coil. It's probably bulging out like Hercules.

That's what came to mind when I read your post. Might be the cause, or might not.

all set up - wick/juice - ohms read .09

 

[suspectK]

Good thing the itaste is pasthru capable...

 

[Coastal Cowboy]

I've always thought higher res shortens battery life. like a 3 ohm coil set to max watts/volts would drain battery faster then a 1.5 at 4v

It depends on the mode in which you're using your device.

I = E/R

In an electrical circuit, a lower resistance load will produce more energy (heat, light, motion, etc) at any given voltage. The greater the energy, the greater the current.

Assuming a nominal voltage of 3.8 and resistance of 1.8, your circuit requires about 2.0 amps.

Assuming a nominal voltage of 3.8 and resistance of 0.9, your circuit uses about 4.0 amps.

It's the current usage that determines a battery's capacity, which is expressed in amps or milliamps over some time period (usually hours).

A 1100mAh battery can therefore theoretically deliver 1.1 amp for one hour, or 1,100 milliamps over the same time period.

Edit: I meant to mention that if you're using your device in variable wattage mode, then the reverse is true, because like I=E/R, P=E/I. This means that for a wattage setting, you'll use more current to deliver the same output.

 

[dr g]

I've always thought higher res shortens battery life. like a 3 ohm coil set to max watts/volts would drain battery faster then a 1.5 at 4v

Neither max watts nor volts will drain a battery faster inherently at 3 ohms vs a lower resistance (for volts it depends what the max is). The lower resistance on a fixed voltage will generate more wattage and drain the battery faster. At a fixed wattage the resistance is largely irrelevant.

Regarding the subject, there are several regulated devices capable of firing subohm coils, DNA20 mods, some Provaris, and the Itaste 134 come to mind. However on regulated devices subohm is largely irrelevant.

 

[mgmixology]

Thanks for the info guys, this little $35 dollar battery just blows my mind I guess. 3-4 months going strong!

 

[tj99959]

I'm still missing the point of why you would want to go sub ohm with a micro coil. I use micros to get the same vape without going sub ohm.

 

[dr g]

I'm still missing the point of why you would want to go sub ohm with a micro coil. I use micros to get the same vape without going sub ohm.

Power of course, nothing replaces power.

 

[tj99959]

Power of course, nothing replaces power.

Ya - right, that's why a top coil tastes hotter than a bottom coil at the same wattage.

and then there's air flow

 

[dr g]

Ya - right, that's why a top coil tastes hotter than a bottom coil at the same wattage.

eh? surrounding a coil with coolant will change its power handling but power is still power, that coil will perform differently at different wattages. that's kind of obvious.

A microcoil at higher power outperforms the same coil at lower power, generally speaking.

 

[mgmixology]

I'm still missing the point of why you would want to go sub ohm with a micro coil. I use micros to get the same vape without going sub ohm.

I Didnt want/try to go sub ohm....ive never made a micro-coil from flat ribbon wire. Therefore leading to a random ohm as a finished product. I just so happened to get .9 ohm.

 

[tj99959]

eh? surrounding a coil with coolant will change its power handling but power is still power, that coil will perform differently at different wattages. that's kind of obvious.

A microcoil at higher power outperforms the same coil at lower power, generally speaking.

So the Q still remains "how much power is enough". The micro coil allows me to produce the same vape as a sub ohm coil at a lower power level. So micro coil trumps power.

Right now I have a 2.9 ohm micro on my Provari, and man I can't handle this this thing past 4 volts. That's only 5.5 watts! Air flow and advancements in coil design have made the use of high wattage/amperage unnecessary is all I'm trying to say.

 

[mgmixology]

So the Q still remains "how much power is enough". The micro coil allows me to produce the same vape as a sub ohm coil at a lower power level. So micro coil trumps power.

Right now I have a 2.9 ohm micro on my Provari, and man I can't handle this this thing past 4 volts. That's only 5.5 watts!

That Q is amongst you and the other posters. haha i dont get into the logistics. happy vaping

 

[Oomee]

Might not be doing that 800mAH battery any favors .