Opinion on wrapping coil in RBA

[Russyrex]

I just got my Rocket KF Clone and was wondering if wrapping it in 28awg vs 32awg..i wrapped it with a 5/6 wrap for about 1.2ohms and my main question is would wrapping it in 32awg at the same resistance (i think around 3 wraps) produce the same results since it is the same ohms? If not, which would give better results? Right now I'm getting major throat hit and sub par vapor production with cotton and am thinking its due to the wire, any input?

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[StarsAndBars]

Which device are you using dude?

 

[Sthur]

It all about how much wire touches the coils and resistance. I use a 1.5 ohm, 30 guage wire, and 6/7 wrap, micro coil, with cotton in my KFL clone and works great.

If you haven't done micro coils try to make one, better then standard coils in KFL and PT.

 

[Vermonster13]

The more wick your coil is in contact with the more vapor you can produce. If you aren't getting much vapor it could be not enough wicking or air.

 

[Bunnykiller]

using different wire gauges but trying to keep the same ohms will result in longer/shorter coil lengths if the dia is the same on the coils. With that in mind, the shorter coil will have less contact with the wick, and less contact normally results in less vapor production. I have found that 28/30 ga allows me to make 6-9 wraps to get in the range of 1.6-2.2 ohms. When using 32ga, for the 1.8 ohms I end up with 3-5 wraps and less dense vapor. If I up the watts, I have more instances of dry hits/burnt taste on the 32 wire...

 

[Russyrex]

What is the exact difference in a micro coil? My coils are about 3mm in diameter

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[sherman_cj]

What is the exact difference in a micro coil? My coils are about 3mm in diameter

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The main diffrence in a Micro is that the coils are wound as close together as possible without overlapping them. Another thing you could try would be making a twisted coil out of the 32. This would Affectivly almost double the amount of coil touching your wick while keeping your coil around the same size.

 

[StarsAndBars]

The main diffrence in a Micro is that the coils are wound as close together as possible without overlapping them. Another thing you could try would be making a twisted coil out of the 32. This would Affectivly almost double the amount of coil touching your wick while keeping your coil around the same size.

Make sure you know what you're doing before you try something like this dude. Twisting coils doubles the amp draw from your battery. If you don't know why that's important please speak up.

Agh. A micro coil is about 1/16 diameter. It allows you to make more wraps while keeping the over all resistance the same.

 

[sherman_cj]

Make sure you know what you're doing before you try something like this dude. Twisting coils doubles the amp draw from your battery. If you don't know why that's important please speak up.

Agh. A micro coil is about 1/16 diameter. It allows you to make more wraps while keeping the over all resistance the same.

Thank you for Including that I forgot to mention the amp draw when making coils like this.

 

[JQside]

I just got my Rocket KF Clone and was wondering if wrapping it in 28awg vs 32awg..i wrapped it with a 5/6 wrap for about 1.2ohms and my main question is would wrapping it in 32awg at the same resistance (i think around 3 wraps) produce the same results since it is the same ohms? If not, which would give better results? Right now I'm getting major throat hit and sub par vapor production with cotton and am thinking its due to the wire, any input?

I've had the same exact KF for about more than a month now. Bought it from Canvape. There's already a pre-installed coil and wick when I got it. It vaped beautifully. It had an extra wire, probably 32 wg, but it was too short for a novice like me. Three days I was tempted to change it, even though it was still vaping nicely. I don't even remember how the original was setup. But I recall it was a figure 8 wick. And that's probably the key to these KF's - a coil with tails covered by a chimney or chamber. I have installed 28 wg in all my rebuildables, but I found them to be too thick and require 10 - 12 wraps to attain 2 ohm or higher. (I don't go below that because I want to be able to use my mech mods without draining the batteries fast.)

So, in my view, thicker wires drain the battery fast as it has to use energy to heat all that length and thickness up. Just yesterday, I tried a 34 wg and wrapped about an inch of 3 mm braided ekowool with 4-5 wraps. (Not a figure 8 wick, just a straight thick wick, then bended to be enclosed by the chimney.) It registered at 2.8 ohm. It vaped beautifully, as usual. In the past, I had this mindset that anything above 2 ohm will never work on mech mods. These RBAs just proved that fallacy.

 

[StarsAndBars]

I've had the same exact KF for about more than a month now. Bought it from Canvape. There's already a pre-installed coil and wick when I got it, vaped it and vaped beautifully. It had an extra wire, probably 32 wg, but it was too short for a novice like me. Three days I was tempted to change it, even though it was still vaping nicely. I don't even remember how the original was setup. But I recall it was a figure 8 wick. And that's probably the key to these KF's - a coil with tails covered by a chimney or chamber. I have installed 28 wg in all my rebuildables, but I found them to be too thick and require 10 - 12 wraps to attain 2 ohm or higher. (I don't go below that because I want to be able to use my mech mods without draining the batteries fast.)

So, in my view, thicker wires drain the battery fast as it has to use energy to heat all that length and thickness up. Just yesterday, I tried a 34 wg and wrapped about an inch of 3 mm braided ekowool with 4-5 wraps. It registered at 2.8 ohm. It vaped beautifully, as usual. In the past, I had this mindset that anything above 2 ohm will never work on mech mods. These RBAs just proved that fallacy.

Sorry mate but that's not how it works at all. Thicker wire drains your battery quicker because it has less resistance. Less resistance means a higher amp draw from your battery (we'll get into that in a second stay with me). The larger a conductor is in a circuit (all else being equal), the larger the path voltage has to travel. 28 gauge is larger than 32 gauge so a larger path, therefore less resistance.

Killing your battery sooner shouldn't be your biggest concern, but rather how many amps you are asking from your battery. Any time a battery is supply voltage, the drain rate is measured in amps. Using a low resistance coil drains a battery more quickly because it pulls more amps.

All batteries have an amp limit. If that limit is exceeded, thermal runaway can occur. Thermal runaway is when a battery becomes unstable. This can cause the battery to vent chemicals, burst into flames, or even explode.

If you guys are going to be making your own coils, learn what you're doing first please. You need to buy a quality high drain battery that has an amp rating higher than you will be imposing on it. How do you know? I'm glad you asked. Ohm's law will tell you how to calculate amps by using voltage and resistance.

Let's say your battery is 4.2 volts (3.7 volt battery fully charged) and your coil is 1 ohm. Your amp draw would be around 4 amps. If your coil is .5 ohms (sub ohm) you'd be pulling 8.4 amps from your battery. You need to know if your battery can handle that before asking it to or you are asking for thermal runaway.

To sum it up. To find amp draw, divide voltage by resistance. Got it? And get yourselves a dang multimeter or you shouldn't be building your own coils.

 

[dedi]

Very nice Stars

 

[StephenF]

Excellent point Stars. I make my own wicks from stainless steel and 32 guage wire. The very FIRST thing I do before use is check it with my multimeter. Even though I use a VAMO5 battery that rejects a coil under 1.1 ohm, I still use the multimeter because I tested it and it's accurate.

Be safe with these batteries folks. If you wind your own coils, please at least get a multimeter...they are cheap nowadays....

I would also recommend spending a little dough on a good battery(not cheap knockoffs) I prefer a variable voltage and/or variable wattage battery. This way you can tune your battery to produce nice vapor as no matter how careful you are wrapping coils, the ohms will be a little different. I never use a coil under 1.5 ohms...

 

[JQside]

Sorry mate but that's not how it works at all. Thicker wire drains your battery quicker because it has less resistance. Less resistance means a higher amp draw from your battery (we'll get into that in a second stay with me). The larger a conductor is in a circuit (all else being equal), the larger the path voltage has to travel. 28 gauge is larger than 32 gauge so a larger path, therefore less resistance.

Re read my post clearly mate and you don't have to post all that. Of course, 28 is thicker than 34. It's like water flowing through pipes. Water flows faster on larger pipes... Read my post, dude. This is common sense. Thicker wire means less resistance, and vise versa.

 

[StarsAndBars]

Re read my post clearly mate and you don't have to post all that. Of course, 28 is thicker than 34. It's like water flowing through pipes. Water flows faster on larger pipes... Read my post, dude. This is common sense. Thicker wire means less resistance, and vise versa.

You posted that you were a novice yourself. I was only trying to help and certainly didn't mean to insult your new found expertise. And no, it isn't common sense at all.

It seemed clear to me you were unclear about why thicker wire drains a battery faster so I explained it. I believe you should just say thanks.

 

[JQside]

You posted that you were a novice yourself. I was only trying to help and certainly didn't mean to insult your new found expertise. And no, it isn't common sense at all.

I was suggesting higher resistance setups, and you totally dismissed it.