So it really doesn't matter if the coils are touching each other when rebuilding coils?

[vang0gh]

How many spirals for something around 2.0 (give or take) with 32, 30, and 28 gauge wire? I would like to try this on my VV mod.

8 wraps of 29ga around a 1/16" drill bit lands me at 1.2 ohms. So, a wild guess would be that 12 wraps of 30ga around a 1/16" bit would be in the neighborhood of 2.0 ohms. If it's lower than 2.0, add more wraps. If higher than 2.0, take some of the wraps away.

As long as you're checking your coils with a multimeter or a regulated mod, there's no harm in just giving it a shot to see where you land. And, if you're wrapping your own coils, you really ought to be checking your coils for shorts anyway.

 

[Kyi]

Can you tell me what exactly causes a short? I'm getting my multimeter tomorrow so I will finally be able to test my coils. Can the coils on the spiral touch the screw post? My main concern is when I tighten the ends of the coil into the post, it kinda pulls it in and then when I have to shove the wicks and everything inside the cap, I'm afraid it will push it in further and then the spiraled coils on the wick will touch the posts. This is not ok, right? Or is it fine? It's just soo close to the posts! Maybe I should have started off with a bigger RBA? I'm using an Igo-S which is pretty small on the inside.

 

[super_X_drifter]

Can you tell me what exactly causes a short? I'm getting my multimeter tomorrow so I will finally be able to test my coils. Can the coils on the spiral touch the screw post? My main concern is when I tighten the ends of the coil into the post, it kinda pulls it in and then when I have to shove the wicks and everything inside the cap, I'm afraid it will push it in further and then the spiraled coils on the wick will touch the posts. This is not ok, right? Or is it fine? It's just soo close to the posts! Maybe I should have started off with a bigger RBA? I'm using an Igo-S which is pretty small on the inside.

If your coil (spirals) leads or tails contact any metal in the RBA or cap other than their respective terminal post a short will occur. I prefer to wrap on a mold/jig/mandrel and leave the coil on it during the installation (using the mold to push/pull the coil into position) and remove it when position and alignment are ideal. Then insert wick.

Your RBA will perform much better if the coil is away from the posts and closer to the air source.

 

[JeremyR]

I've actually wrapped coils in a repeating X pattern and they have lasted just as long as coils wrapped & evenly spaced. I used to think coils couldn't touch until I gave a new builder some rebuilding advice and said "make sure the coils don't touch" and I got a couple responses below me to the tune of "The coils can touch, whoever said coils couldn't touch is a vaping sadist that doesn't want you to have fun rebuilding" and ever since then I have worried less (or not at all) about my coils touching. The key is even spaces if you do space them out and avoid hot spots, which can be caused from spacing them out except for 1 area of the wick which causes a hot spot that will burn or short/snap due to the extreme heat in the 1 area.

That comment was awesome!!!!

Yeah I can't believe the nonsense about the world Will end if your coils touch. Maybe if your doing like a 3 wrap and wrap one and three cross you'll have a serious short or your legs cross.

Stupid Iphone troubles.. 15 buttons for pushing one I give up

 

[LeoRex]

Another note about microcoils and the sub-ohm crowd.... i.e. why is it so popular there?

Two things:

First, when people say sub-ohm, really what they are saying is high power vaping generally.... high teens to 30 and beyond. That is quite a bit of heat in a small space. Microcoils do two things.. first, it exposes more wire to juice, more vapor... and it distributes that heat over a larger area... more vapor. Basically, more vapor.

Second... the sub-ohm crowd tends to be on the 'bleeding edge' of vaping tech, fiddling with any and all new tricks and techniques in an attempt to get, well, more. The 'microcoil' trend dovetails nicely into what a sub-ohm vaper is trying to accomplish, hence the popularity.

But there are plenty of people with higher resistance stuff running micros. It's like tubocharging your vape... You can run a 2+ ohm microcoil that rocks and rolls at 'tame' power levels... 8 or 9w... Giving a lower-resistance experience (talked about at length in the micro thread), but cooler and completely regulated mod-friendly. My micro'd IGO at 10w puts out a vape that can hold it's own against the 18w vape on my mech-driven RSST.

It isn't necessarily as popular as the wire for the higher resistance stuff is a little bit trickier to work into a micro (32g is pretty springy and not as easy to shape as, say, 28g)

 

[supermarket]

Thanks for clearing everything up guys, you all rock.

After reading this thread, I *really* think my theory might be correct. I have a theory that even 30g and 32g will benefit from running "microcoils" or in other words, running the kanthal wire so that it forms a tube, more or less, over the silica. I think this will increase the surface area over the wick, and therefore should provide more vapor, and more flavor. In fact, I'm wondering if using 32g might actually work wonderfully for this. In the higher ohms, itll give it a chance to take higher voltage, and won't run quite as hot.

I'm definitely going to try some coils like this, and see how it turns out. Thanks so much guys!

 

[State O' Flux]

In fact, I'm wondering if using 32g might actually work wonderfully for this. In the higher ohms, itll give it a chance to take higher voltage, and won't run quite as hot.

Other than... the smaller the wire, the more difficult it becomes to make a straight, even micro. Not saying it can't be done, just more difficult to manipulate into a desirable, stable shape. Also more difficult to thread a (properly sized) wick through... not very stiff, so tends to distort with more than a slight tug.

 

[JeremyR]

I only have 32 right now and it works you just have to heat it a lot more times to get it to hold shape. 30 is much better. I regularly run 3+ ohm micros even as high as 4.

 

[Plumes.91]

yeah I only have very thin gauge wire and micro coils are close to impossible so I've never had a chance to try them properly. You can wrap a very tight tunnel-like spring, but wrapping a proper tunnel is extremely difficult with thin wire.

 

[JeremyR]

This is 32 gauge worked on for a while. After I loaded it and pinched it hot... it was a completely touching micro coil.