coil question

[rednec83]

Hi all
Iv recently read about open coils. What's the difference, pros and cons of open, closed and or micro coils?
I'm running a evod atty on an aspire vv.
Do any of these make a difference on my setup. As I make my own coils. On 24g kanthal A

Thank you

 

[Hitmetwice]

Using 24g wire in an evod won't allow very many wraps, what ohms are you getting if you don't mind me asking?

Micros ran too hot and had a too long ramp up time for my liking. Just my experience with 'em. Cheers.

 

[rednec83]

About 2.4 -3.2 give or take.
That's what my mechanics multi meter telling me
think atm 5 wraps on 2.4. What would you recommend. Needing more wire but not sure what gauge to get
thanks

 

[JeremyR]

Touching coils gunk much faster ime.

I prefer 32g on those attys with a vv/vw mod, because it heats so fast.. 30g is good too, good response time and a little more wick coverage. 28g would be my max on an evod..

The thinner the wire the faster it heats up.

If your using a mechanical mod you have no choice but to go to a thicker wire to get lower ohms like the 28.

 

[Hitmetwice]

Thank-you, 5 wraps of 24g kanthal should (i think) be netting you a much lower resistance.
It would also be a very tight fit in the evod housing with 24gauge.

Hopefully someone else will stop by and give you the answer you are after. Cheers.

EDIT...Jeremy's the man, listen to him.

 

[Bunnykiller]

you need a better ohm meter... 26 ga. on a 2.5mm shaft at 5 wraps is .7 ohms.... 24 ga would be even lower

and Im wondering how you are getting 5 wraps of 24 into an Evod. must be a really tight fit...

 

[rednec83]

My apologies
iv just checked the eBay listing where I got it from. It's 32g.
I feel like a right dumb dumb ... lol

 

[rednec83]

My wick is 3mm
or i use a 2mm bit and use cotton wool balls
if that makes any difference

 

[Hitmetwice]

My apologies
iv just checked the eBay listing where I got it from. It's 32g.
I feel like a right dumb dumb ... lol

Hey buddy, no worries we've all bin there done that.
Enjoying the journey is the most important part.
Keep on keepin' on. Cheers.

 

[Hitmetwice]

My wick is 3mm
or i use a 2mm bit and use cotton wool balls
if that makes any difference

What are you looking to improve with using a diff, wire?
Are you not liking what you already have?
You might try a little less wicking if you want better juice flow for starters.
The wire you are now using is probably about the best size for your application. Cheers.

 

[JeremyR]

30g will be a little easier to work with if 32 gives you trouble.

I prefer a 1/16 bit on the evod, same size as the channels and will get you more wraps on the wick.

What type of mod are you using?

The power available, and linitations, will steer coil ohm and wire selections.

Lower ohm is definitely not always better, depends on a lot of other factors too.

This tool will help you experiment with different things without actually trying it.

http://www.steam-engine.org/coil.asp

 

[Bunnykiller]

ahhh much better now. 30 32ga is more like it... now the ohms match the # of winds...
still should get a better ohm meter tho

 

[rednec83]

I was just wondering whether open or closed coils which one would be better. Would like to stick with cotton as easy er to change when changing flavours.
Just read on steam engine, 4 wraps would give me 1.8 ohms, ish.
would that be to Low?
should I worry about open or closed Coils?
for my set up what's the lowest Ohm?

 

[rednec83]

It's a
aspire vv 1300

 

[Hitmetwice]

I was just wondering whether open or closed coils which one would be better. Would like to stick with cotton as easy er to change when changing flavours.
Just read on steam engine, 4 wraps would give me 1.8 ohms, ish.
would that be to Low?
should I worry about open or closed Coils?
for my set up what's the lowest Ohm?

1.8 ohm should not be too low for your set-up and as was mentioned earlier the closed or micro type winds will gunk up very quickly and produce much more heat. I tried low ohm type builds on this type of clearo as well as protanks and feel they just are not made for such high heats or currents.

T he lowest resistance you can go depends on the battery's max amp output. You'll need to look into it's specs, but I still think if you go lower than 1.5 ohm or so you will not like the overall performance.
Could be wrong though.

Read up on battery safety on badittudes blog if you plan to go below 1.5 ohm...
This is VERY important to stay within saftey limits of your battery.

 

[JeremyR]

Mich of the issue with micro touching coils is the coil drys out faster causing it to overheat. Overheating causes gunk. Touching coils also hold juice on them and bake it onto the surface. A spaced coil covers more wick and stays wetter and in turn doesn't overheat as easily.

There is a balance of wick coverage with wire that produces more vapor.

You will find that with more wraps of 32 at a higher voltage produces more vapor.

So if your not running the cf turned all the way up you have room to go up in ohms and up in power and still get the same heat with more vapor.

So going lower ohms with same wire can reduce vapor out put while running hotter.

I would shoot for 6-8 wraps on a smaller bit.

Looking at the aspire cf 1300 it is more designed for a lower ohm application. The maximum voltage is 4.8v instead of 6v like other mods.

With this battery you will need a heavier gauge wire to reach its full potential... It looks like around 1.3-1.5 will give you the maximum power from that battery.

There are many ways to get to 1.5 ohms with 32g you can twist it or run it parallel to get even more wick coverage with a lower ohm.

28g would probably be best for the evod on that battery.

My favorite coil is parallel 32. This heats really fast and a lot of vapor. But you don't have room for it in the evod. Twisting two together will be your best bet with what you have available.

Also the evod is highly limited by its air flow and juice flow, tops out around 12w.

Sorry for jumping all over posting from my phone at various times.

 

[djsvapour]

About 2.4 -3.2 give or take.
That's what my mechanics multi meter telling me
think atm 5 wraps on 2.4. What would you recommend. Needing more wire but not sure what gauge to get
thanks

Have you tested your multimeter touching the probes together. Mine reads 1.0ohm exactly, so I subtract that from the reading. 3.2 would be too high for sensible use on a VV eGo really.

I can't honestly say I worry about how tight they are. They are pretty compact, but not squeezed hard. i.i.r.c. I got a 9 wrap in a mini Protank the other day.

 

[lnfound]

30g will be a little easier to work with if 32 gives you trouble.

I prefer a 1/16 bit on the evod, same size as the channels and will get you more wraps on the wick.

What type of mod are you using?

The power available, and linitations, will steer coil ohm and wire selections.

Lower ohm is definitely not always better, depends on a lot of other factors too.

This tool will help you experiment with different things without actually trying it.

Coil wrapping | Steam Engine | free vaping calculators

That's a very handy website, thanks. To be clear, heat flux = vapor temp, more or less, and heat capacity will correlate with heat up time? What would dictate vapor production (guessing both so not much help on that end).

 

[rednec83]

Thanks guys you have all been a real help.
ll look into twisting, im guessing its 2 length of wire twisted tightly together, an then make coil from That?

can you use house hold fuse wire as Coil?

 

[drunkenbatman]

Thanks guys you have all been a real help.
ll look into twisting, im guessing its 2 length of wire twisted tightly together, an then make coil from That?

can you use house hold fuse wire as Coil?

Hey mate, caught this late (Gilmore Girls marathon) but hopefully you haven't been making yourself sick as no, you don't want to use fuse wire for it. Fuse wire is generally a tin/lead alloy, sometimes around copper. Besides the fact that it's designed to deteriorate when heated past a certain point, lead & tin are bad juju for our purposes for several reasons.