RDA wicks - tucked and not threaded?

[quipstad]

I have a friend with a quad-coil sub-ohm build. (4 @ 1.2-ohm = 0.3-ohm total). Still not sure what the model is but I noticed he has a wad of cotton stuck in the middle of (and underneath) these 4 coils, not threaded through them. Can that be adequate for wicking without burning up the coils?

I ordered an IGO-W3 rda and I'm trying to figure out if I can do the same.

 

[Cullin Kin]

It can be done. I've noticed that the flavor isn't nearly as good without the wick threaded through as well. My setup is a combination of threading through and a pillow beneath the coil and my goodness does it taste good.

 

[quipstad]

Thanks Cullin. I'll try that. This is my first build and I'm going quad-coil and sub-ohm. I'm going to have to be quite meticulous to get this right!

Can't wait for everything to arrive!

 

[Circa Survivor]

Thanks Cullin. I'll try that. This is my first build and I'm going quad-coil and sub-ohm. I'm going to have to be quite meticulous to get this right!

Can't wait for everything to arrive!

I'm sure someone will come in and tell you it's a bad idea since it's your first build XD

 

[Equilibrium]

Thanks Cullin. I'll try that. This is my first build and I'm going quad-coil and sub-ohm. I'm going to have to be quite meticulous to get this right!

Can't wait for everything to arrive!

Do you know anything about the safety aspects of sub-ohm vaping??
What type of battery are you using?
What's your target resistance?

 

[Tinkiegrrl]

Hi OP! I know better then to simply say it's a bad idea. For some, that's just another invitation to do it. Rather, here's what I'll tell you:

Please read up on battery safety. This includes knowing the amperage rating of the battery you are using, and using the battery for the job. Beware of purple Efest batteries. They are adverised with higher amperage ratings then they can actually handle. I recommend using genuine, Sony VTC 5's. Get them from a source well known for selling genuine batteries. RTDVapor and Lighthound are two good vendors.

Get a multimeter and use it. Make sure you test your coil before attempting to fire it. Check your battery's remaining voltage often. Allowing the voltage to drop too low is no good for the battery or yourself.

Make yourself aware of the signs of a failing battery. Once you get any of these signs, stop using the battery immediately.

Make sure you have proper airflow through your topper.

 

[Circa Survivor]

Hi OP! I know better then to simply say it's a bad idea. For some, that's just another invitation to do it. Rather, here's what I'll tell you:

Please read up on battery safety. This includes knowing the amperage rating of the battery you are using, and using the battery for the job. Beware of purple Efest batteries. They are adverised with higher amperage ratings then they can actually handle. I recommend using genuine, Sony VTC 5's. Get them from a source well known for selling genuine batteries. RTDVapor and Lighthound are two good vendors.

Get a multimeter and use it. Make sure you test your coil before attempting to fire it. Check your battery's remaining voltage often. Allowing the voltage to drop too low is no good for the battery or yourself.

Make yourself aware of the signs of a failing battery. Once you get any of these signs, stop using the battery immediately.

Make sure you have proper airflow through your topper.

That's some good advice. And for the record, I didn't mean to imply that someone would just come in and say "Bad idea." I knew someone would give some tips on battery safety, I was just being a stinker xD

 

[quipstad]

Hey everyone! Let me try to answer these in order...

-I have read a bit on the safety aspects of sub-ohm vaping, but I suppose some more research would do me well.
-I (apparently unfortunately) got an Efest 18650 battery claiming 35A continuous discharge
-Aiming for somewhere between 0.3 and 1.0 ohms. Not really sure yet as this is a huge jump from what I've been using (3.0 ohms @ 4.5 watts).

-Per your warning on my very purchase, tinkiegirrl, I just placed another order for some Sony VTC5s from RTDVapor. Thanks for the recommendation. Now what to do with the Efests? They claim 35A but what can they handle? Even at 0.3ohm total resistance I calculate 13 amps. Still not worth the risk?
-I do have a very good multimeter and will test my coils. One question - do EACH of my coils need to be the correct and equal resistance, or in a quad-coil arrangement is it only important that my total resistance is correct?

 

[HecticEnergy]

Hey everyone! Let me try to answer these in order...

-I have read a bit on the safety aspects of sub-ohm vaping, but I suppose some more research would do me well.
-I (apparently unfortunately) got an Efest 18650 battery claiming 35A continuous discharge
-Aiming for somewhere between 0.3 and 1.0 ohms. Not really sure yet as this is a huge jump from what I've been using (3.0 ohms @ 4.5 watts).

-Per your warning on my very purchase, tinkiegirrl, I just placed another order for some Sony VTC5s from RTDVapor. Thanks for the recommendation. Now what to do with the Efests? They claim 35A but what can they handle? Even at 0.3ohm total resistance I calculate 13 amps. Still not worth the risk?
-I do have a very good multimeter and will test my coils. One question - do EACH of my coils need to be the correct and equal resistance, or in a quad-coil arrangement is it only important that my total resistance is correct?

.3 and 1 ohm is a huge range!
The igo w3 is a bit of a pain to build on for most, I'd start with a dual coil around 1.4/coil - that will drop you down to a total of .7ohms. its a good safe place to start.
From there build higher resistance coils, like 4 1.8's to get you down around the 4 ohm mark.. 32ga wire is good for these builds imo.
I have some red efest 20amp batteries, used them in my 15w mods (5amp limit i think) and they performed fine. I'd guess that that would be ok for the purples too.. but i'm not 100% sure on that.

You coils should be all near as equal as you can get them. Equal in wire type (guage) as well as wrap type (paralell/twisted/braided/etc). multiply the over all resitance of your built atty by the number of coils and that should be the restiance of each coil. double check with steam-engine.org to make sure that seems accurate for your wiretype and wraps. I've found steam-engine gets really close to what I expect them to be doing some quick math in my head. If it is off, one could be shorting or not completing its circuit.
The resistance will change a bit after firing the coil and fixing your wraps (assuming micro/macro/nano coil). also, the resistance will change a bit after use (break in). I dont think Ive seen a total variance of more than .5 total... I think its usually less.

hth


Sent from my iPad using Tapatalk HD

 

[Nytebreed]

Honestly, I don't think you are going to be happy doing a quad on your 1st build. There are too many variables involved and you need a solid foundation of electrical theory, series vs parallel circuits, how the affect resistance differently, and of course Ohms law. Add in DC theory, battery types and safety.
Research how mech mods actually complete the circuit. What parts of the deck and posts do what, and how the switch works.

Build some singles or duals 1st and work up to quads as you progress, if you still feel the need.
.
You want each coil to be as close to equal as possible, it will get them to fire equally.

0.3 - 1.0 is a huge range variance. I would recommend staying on the north side of 0.5 to start,

The lower you go, for adequate performance you need a more air. Sometimes this requires irreversible modification of your atty.

It is not a race. go slow, learn as much as possible. Then go learn more. You will become far more proficient, and most importantly not end up as a news headline.

[EDIT]: As for the original question it depends on the coil style on how it is best wicked. Nano coils are almost ever internally wicked, and many micro builds will just bed the coil for ease of building.

 

[Cullin Kin]

Thanks Cullin. I'll try that. This is my first build and I'm going quad-coil and sub-ohm. I'm going to have to be quite meticulous to get this right!

Can't wait for everything to arrive!

Yes, my pleasure. But please, as everyone else is saying, please do your research on ohm's law, battery limits, and the overall safety of sub-ohm builds.

I would start with just a dual coil (parallel) build. Please be careful!

 

[quipstad]

I assumed they wouldn't fire equally if they were of uneven resistance, but I hadn't seen it addressed in coil build videos I had seen.

I am not racing, and I do have a thorough understanding of basic electronics theory and Ohms law.

I've been working with low voltage electronics since I was very young so I'm comfortable with the build, and I'm an overanalyzing perfectionist so I'll be taking my time to make sure it's right.

I'm not trying to sound egotistical, but I know the risks and will be taking precautions.

As an extra precaution, and because of the concerns of fellow vapers I will start high with my resistance and work my way down as I get more comfortable with coils. I will probably do dual coil but may go for the quad. The decision will be easier when I have everything in-hand and I'm starting to put it together.

 

[sToTheGeezy]

Hey everyone! Let me try to answer these in order...

-I have read a bit on the safety aspects of sub-ohm vaping, but I suppose some more research would do me well.
-I (apparently unfortunately) got an Efest 18650 battery claiming 35A continuous discharge
-Aiming for somewhere between 0.3 and 1.0 ohms. Not really sure yet as this is a huge jump from what I've been using (3.0 ohms @ 4.5 watts).

-Per your warning on my very purchase, tinkiegirrl, I just placed another order for some Sony VTC5s from RTDVapor. Thanks for the recommendation. Now what to do with the Efests? They claim 35A but what can they handle? Even at 0.3ohm total resistance I calculate 13 amps. Still not worth the risk?
-I do have a very good multimeter and will test my coils. One question - do EACH of my coils need to be the correct and equal resistance, or in a quad-coil arrangement is it only important that my total resistance is correct?

On your e-fest battery........... If you do a little research on these batteries you will find that depending on which e-fest you have they are either a Sony VTC4 or VTC5 rewrapped with the purple efest label. I bought a couple of the 35amp 18650's from my local vape shop and unwrapped just to verify, and behold....VTC5's

 

[Nytebreed]

On your e-fest battery........... If you do a little research on these batteries you will find that depending on which e-fest you have they are either a Sony VTC4 or VTC5 rewrapped with the purple efest label. I bought a couple of the 35amp 18650's from my local vape shop and unwrapped just to verify, and behold....VTC5's

Sometimes that's the case and sometimes it's a rewrapped 10A drain rate IMR.
You can't trust EFEST now a days unfortunately.