Status
Not open for further replies.

Mozzer

Ultra Member
ECF Veteran
Verified Member
Jul 20, 2013
1,399
5,996
Rohnert Park CA, USA
makes more sense. a lot of the dual coil set-ups i have seen do use a thinner gauge wire.

A lot of it has to do with the battery, and maybe the Ba Gua voltage drop. I just put the Arrow on my Nemesis (18350 mode), and it's much more responsive. Hits harder. It's still the regular 4/5 wrap, but there's a significant difference between the two mods.
 

j3suss

Senior Member
ECF Veteran
Sep 22, 2012
163
120
35
N/A

vapdivrr

Vaping Master
ECF Veteran
Verified Member
Jul 8, 2012
9,966
19,933
61
sarasota,fl
A lot of it has to do with the battery, and maybe the Ba Gua voltage drop. I just put the Arrow on my Nemesis (18350 mode), and it's much more responsive. Hits harder. It's still the regular 4/5 wrap, but there's a significant difference between the two mods.

agreed, voltage does have a lot to do with it for sure. maybe with a vv device one could possibly use a thicker wire. if doing dual coils on a vv device you could maybe make a dual coil, each coil at maybe 2.4 ish ohms for a total resistance of about 1.2Ω. with this resistance and maybe 28g wire you would have more voltage to run through it, decreasing the heat up time compared to a mechanical mod.
 

eHuman

Ultra Member
ECF Veteran
Verified Member
Jul 18, 2010
2,591
2,369
San Diego
as I come to believe on how a dual coil works is that although the resistance is cut by half, the amps are doubled. don't do dual coils myself so its something I never looked into further, but if the amps are doubled it seems that a smaller battery will drain in no time at all. also I believe the 350's are less in c-ratings then the 650's

Your amperage is not doubled. Lets use a single coil 1Ω and a 1Ω dual (which is actually two 2Ω coils in parallel)
4v/1Ω=4A in both cases.

In the case of the dual coil, 4v/2Ω=2A (multiplied by two coils) = 4A

You get a cooler wire temperature per coil on a dual coil and more vapor verses single coil (if you are comparing the same final Ω value).
 

jmkiang

Senior Member
ECF Veteran
Verified Member
Jul 14, 2013
179
271
Chicago
Your amperage is not doubled. Lets use a single coil 1Ω and a 1Ω dual (which is actually two 2Ω coils in parallel)
4v/1Ω=4A in both cases.

In the case of the dual coil, 4v/2Ω=2A (multiplied by two coils) = 4A

You get a cooler wire temperature per coil on a dual coil and more vapor verses single coil (if you are comparing the same final Ω value).

Single 1ohm coil
3.7V / 1ohm = 3.7A

Dual 1ohm coils = 0.5 ohms since they are running in parallel
3.7V / 0.5ohm = 7.4A

Remember, you're not running your coils in series so you don't sum up the resistance.
 

eHuman

Ultra Member
ECF Veteran
Verified Member
Jul 18, 2010
2,591
2,369
San Diego
I was comparing 2x2Ω with 1Ω. Both meter at 1Ω, both pull the same Amps and both produce the same wattage.

Single 1ohm coil
4.0V / 1ohm = 4.0A = 16W

Dual 2ohm coils = 1 ohms since they are running in parallel
4.0V / 2ohm = 2.0A = 8w (doubled for the second one in parallel) = 4.0A = 16w.

Yes, you run dual coils in parallel, that's why I didn't sum up the resistance.
 

fordski

Super Member
ECF Veteran
Verified Member
Jan 10, 2013
342
450
Coatepec, Veracruz-Llave, Mexico
Anyone try Rene wire in the kfl?

I've been running a René coil at 1 ohm, 1/16" 11 wrap micro with cotton. I made one in my wife's and my own KFL and we both noticed a difference with the wire. This is hardly scientific as we both knew the new wire was there, but we both described the vape almost the same, denser, smoother and more creamy. I personally quite like the vape, the changes are quite subtle and thankfully we didn't experience the reaction to the nickel some have reported on other threads....

Next time I build one I will try one at slightly lower ohms at around .8 or so.
 

vapdivrr

Vaping Master
ECF Veteran
Verified Member
Jul 8, 2012
9,966
19,933
61
sarasota,fl
Your amperage is not doubled. Lets use a single coil 1Ω and a 1Ω dual (which is actually two 2Ω coils in parallel)
4v/1Ω=4A in both cases.

In the case of the dual coil, 4v/2Ω=2A (multiplied by two coils) = 4A

You get a cooler wire temperature per coil on a dual coil and more vapor verses single coil (if you are comparing the same final Ω value).

I have never run dual coils so I have really never bothered with the results but I did post under my initial post that I thought the amps really weren't doubled. but comparing the 2 coils, one single coil versus the dual coil, wouldn't the dual coil actually require more voltage to feel the same? I know the dual coil is halved in resistance but there is still all that wire to heat, I would imagine that for the dual coil you would want to increase the voltage to feel the same kind of vape of the single coil. and if this is true then ultimately you would be using more amps then the single coil.
 

Mozzer

Ultra Member
ECF Veteran
Verified Member
Jul 20, 2013
1,399
5,996
Rohnert Park CA, USA
Update on the Arrow (should prolly move this to the micro thread - sorry for the off topic): I tried 7 wraps of 32g, but the resistance was a bit high (nearly 2.0Ω), and it wasn't any faster heating up. So I decided to go back to 7 wraps each with 28g. It heats up quickly enough, but it seems a little scary for a 14500 battery. The button heats up a little, and the whole head runs pretty hot. Came out to 0.6Ω. Gonna let it settle, try it a bit before I decide.
 

vapdivrr

Vaping Master
ECF Veteran
Verified Member
Jul 8, 2012
9,966
19,933
61
sarasota,fl
Update on the Arrow (should prolly move this to the micro thread - sorry for the off topic): I tried 7 wraps of 32g, but the resistance was a bit high (nearly 2.0Ω), and it wasn't any faster heating up. So I decided to go back to 7 wraps each with 28g. It heats up quickly enough, but it seems a little scary for a 14500 battery. The button heats up a little, and the whole head runs pretty hot. Came out to 0.6Ω. Gonna let it settle, try it a bit before I decide.

just a lot of heat for a tiny atomizer. be careful at .6 Ω, you definatly will want to use a good battery rated for higher amps. have you tried just a single micro coil with a cotton wick in the arrow? I would use a 5/64 drill bit and 28g wire, maybe to a resistance of 1-ohm. make all wraps touching and mount the coil to the atty. take a length of cotton, about an inch in length, make the bottom 2/3 rds of the wick ultra thin. twist it up between the fingers really tight and thin enough to slide through the coil easily. the top 1/3rd of the wick is a lot fluffier and with a diameter that will not fall down through the coil. this is a pretty good vape for sure with a genesis device.
 

Mozzer

Ultra Member
ECF Veteran
Verified Member
Jul 20, 2013
1,399
5,996
Rohnert Park CA, USA
just a lot of heat for a tiny atomizer. be careful at .6 Ω, you definatly will want to use a good battery rated for higher amps. have you tried just a single micro coil with a cotton wick in the arrow? I would use a 5/64 drill bit and 28g wire, maybe to a resistance of 1-ohm. make all wraps touching and mount the coil to the atty. take a length of cotton, about an inch in length, make the bottom 2/3 rds of the wick ultra thin. twist it up between the fingers really tight and thin enough to slide through the coil easily. the top 1/3rd of the wick is a lot fluffier and with a diameter that will not fall down through the coil. this is a pretty good vape for sure with a genesis device.

That's a good thought. Would be a lot less hassle. It's vaping pretty nice for short toots, but pretty hot. I like longer pulls generally. It actually started out tasting a little burnt, but that's gone away. Seems to be wicking well, but I'm tilting for good measure.

Think I'll vape it awhile and maybe tear it down later tonight to try your suggestion. Thanks for that!

The battery is AW IMR.
 

vapdivrr

Vaping Master
ECF Veteran
Verified Member
Jul 8, 2012
9,966
19,933
61
sarasota,fl
That's a good thought. Would be a lot less hassle. It's vaping pretty nice for short toots, but pretty hot. I like longer pulls generally. It actually started out tasting a little burnt, but that's gone away. Seems to be wicking well, but I'm tilting for good measure.

Think I'll vape it awhile and maybe tear it down later tonight to try your suggestion. Thanks for that!

The battery is AW IMR.

sounds like its breaking in so maybe it just needs a few more ml's run through it. yes, next build try the cotton and micro together, works really well.
 

vapdivrr

Vaping Master
ECF Veteran
Verified Member
Jul 8, 2012
9,966
19,933
61
sarasota,fl
Btw, all this fiddling makes me really appreciate the KFL. I don't mess with it at all and it's such a nice vape. I don't feel a need to try to improve it (again, it's 10 wraps of 28g).

I agree, the k-lite is an awesome device and just seems so easy. there is another device that's even easier, the reo!
 

Mozzer

Ultra Member
ECF Veteran
Verified Member
Jul 20, 2013
1,399
5,996
Rohnert Park CA, USA
I agree, the k-lite is an awesome device and just seems so easy. there is another device that's even easier, the reo!

heheh dunno much about the reo. I just read a little. Are you using the k-lite with it? guess you wouldn't need the squeeze bottle if you were. I'm not clear about the atty feed system with the reo.
 

Equality 7-2521

Moved On
ECF Veteran
Jan 29, 2013
1,056
2,071
oakland ca.
Hi all,
I've been cruising this thread but haven't come up with talk about my questions with the kayfun. I've been vaping my KFL for about three days and am having lots of fun with it for the most part.I'm using a ceramic wick like the one gdeal made. when the tank is empty I lay it at a 45 angle and fill it till the air bubble almost disappears. install screw turn atty upright.

the atty vapes great, but if I walk away from it for an hour or two sometimes it will gurgel like it's flooded, and yet at the same time I'll get a slight burnt taste......any answers. i usually break it down rinse it and refill and it starts up great.

the other thing i don't get is I was told never to lay it flat or upside down, as that tilt will break the negative air pressure and the atty won't pull juice into the wick. any insights would be greatly appreciated thanks all.
 

vapdivrr

Vaping Master
ECF Veteran
Verified Member
Jul 8, 2012
9,966
19,933
61
sarasota,fl
heheh dunno much about the reo. I just read a little. Are you using the k-lite with it? guess you wouldn't need the squeeze bottle if you were. I'm not clear about the atty feed system with the reo.

I use the reo mizer or the rm2 with the reo. the k-lite wouldn't work with the reo as its not a bottom fed device and has a tank. I use the omega mechanical or provari with the k-lite.
 

-SMT-

Senior Member
ECF Veteran
Verified Member
Aug 9, 2013
233
389
Hawaii
Hi all,
I've been cruising this thread but haven't come up with talk about my questions with the kayfun. I've been vaping my KFL for about three days and am having lots of fun with it for the most part.I'm using a ceramic wick like the one gdeal made. when the tank is empty I lay it at a 45 angle and fill it till the air bubble almost disappears. install screw turn atty upright.

the atty vapes great, but if I walk away from it for an hour or two sometimes it will gurgel like it's flooded, and yet at the same time I'll get a slight burnt taste......any answers. i usually break it down rinse it and refill and it starts up great.

the other thing i don't get is I was told never to lay it flat or upside down, as that tilt will break the negative air pressure and the atty won't pull juice into the wick. any insights would be greatly appreciated thanks all.
^ I had gurgling on my first KFL build......If its gurgling, its flooding.
The next build I lowered the coil to 1mm above the air hole....no more gurgling, better flavor....
Could it be the ceramic wick, dunno- I use cotton, absolutely love it.

I have no problems laying mine down flat , upside down ,etc - zero leakage. The KFL manual recommends not to vape it completely upside down though.....
 
Last edited:
Status
Not open for further replies.

Users who are viewing this thread