Just built my first coil! Kayfun 3.1 clone. Dual parallel 28ga kanthal @ 0.8 ohm. LOVE IT.

[johndoe1027]

Hey all. First off, thanks to ECF for all of the great info that's been posted here. Y'all have helped me stay off the analogs BIG TIME. 7 weeks so far.

I just tried a parallel coil on my kayfun for kicks. The shop where I buy most of my gear does the first build for me, included with purchase of a RBA or RDA. I have bought a kayfun 3.1 and a Mutation X from this shop and when I bought the 3.1, I asked for 1.0 ohm. He obliged with a 26ga regular coil. I've since moved on to cloud chasing with the Mutation X @ 0.14 ohm. I was wanting more out of the Kayfun recently and decided to rebuild it with a parallel coil. I did 7 wraps of 28ga Kanthal around a 0.106" drill bit and ended up with this guy. It's awesome! I don't see a lot of RBA's with parallel coils and I personally won't go back to a single coil. This wins.



Sorry for the sideways Ohmmeter pic. Not sure why it's doing that as it's right-side-up on the HD.

Anyone else rocking a parallel coil on their RBA? If so, what's working for you?

 

[WeirdWillie]

parallel coils are all I build these days, IMO there are no better coils for vapor/flavor production.

 

[johndoe1027]

FWIW I'm vaping a new juice for me tonight, Dragon Mouth Purple People Eater on some organic cotton wick. It's super yummy and has decent vapor production (for a RBA). Keep in mind I also vape on a super sub-ohm Mutation X with a custom chuff cap @ 0.14.

 

[Noserenity]

This is interesting, curious though. How is this parallel coil better/different than a twisted coil. Been running a .9 ohm twister for a few days now on my kayfun and loving it. Also new to building.

 

[WeirdWillie]

They tend to heat up faster coil inside a coil so to speak.

 

[chiliphil1]

That looks like fun, you's guys need to post a video for all of us rookies out here.

 

[WeirdWillie]

That looks like fun, you's guys need to post a video for all of us rookies out here.

search Youtube Rip Trippers parallel coil build

 

[johndoe1027]

Noserentity the parallel coil gives a lower resistance than a single coil of the same size. Much lower. That allows you to use a smaller wire with more wraps. More surface area gives you better flavor and more vapor. Plus the smaller wire heats up faster. Riptripper's video is what I used. They are a little harder than a single coil but not too bad. I succeeded on my first try.

I don't know how a parallel compares to a twisted coil yet. So much to learn. I'd guess the parallel heats up faster as there's more wire touching from wrap to wrap?

 

[johndoe1027]

Chiliphil it's not hard. You just get 2 pieces of wire straight, and wrap them side by side as you go. Plenty of good vids on YT. Better than I would do.

 

[WeirdWillie]

I just take one longer piece of 28g kanthal bend it in half tourch it, do my wraps on a mandrel, squeeze them tight, mount them on the atty, fire squeeze untill hot spots are gone.
Pretty much I stay between 0.5 and 0.8 ohms.

As far as twisted 28g goes to me it doesn't seem to heat as fast as parallel, or quite produce the same quality of vapor, and damn near impossible to get them tight.

 

[Noserenity]

Noserentity the parallel coil gives a lower resistance than a single coil of the same size. Much lower. That allows you to use a smaller wire with more wraps. More surface area gives you better flavor and more vapor. Plus the smaller wire heats up faster.

I get that but what my question was is how is it different in performance of a twisted coil. Seems essentially the same thing. I'm currently using 30 ga twisted and then coiled up to 5 wraps at .9 ohms. Gets hot fast and has the surface area. Varos Vapor has a good video describing the process.

I may try out this parallel and see the differences. Or if it gets the job done easier than a twisted.

 

[johndoe1027]

Do it! Let us know what you think. I've obviously never tried the twisted coil but it makes sense that it would be similar to a parallel resistance wise. My remedial understanding is that when there is more wire touching it will heat faster. That makes me think the parallel will heat a little faster than a twisted but it's just a guess. Hehe, once you try a parallel, try a twisted parallel!!!! Might need a larger deck for that.

I got some ceramic tipped tweezers before I attempted a coil and I'm really glad I did. Just rebuilt my dripper this eve with dual 26ga parallel coils and I would have never gotten them right without those tweezers. SOOOO much easier to shape a coil when it's hot.

Oh and I twisted the ends of my KF coil to help both tails stay under the screws. That may help you guys too, maybe not.

It's not perfect (or a on a KF) but it works pretty darn well. For the RDA users there are triple and quad parallel coils too (3 and 4 wires per coil respectively). I've seen a triple in action and it heated up instantly. IIRC it was a 24ga and still started chucking vapor the second the button was pressed. Sorry, way OT since I doubt you could fit a triple parallel into any RBA.

My dual parallel 26ga, 6 wraps around a 0.105" drill bit at 0.18 ohm. I only post it here because you can see the dual leads in this pic.

 

[Noserenity]

I'll bet that thing projectile vomits vapor! haha!! Yea, when my twist wears out I'll try the parallel. Nice stuff!

 

[johndoe1027]

I'll bet that thing projectile vomits vapor! haha!! Yea, when my twist wears out I'll try the parallel. Nice stuff!

Ew! I have a visual mind. I just got some new juice that is urine colored and my dripper is now vomiting that into my face. Vaping just got really gross.

 

[todd0864]

Is it tricky to get both wires under the screw head?

 

[FFPetz]

I get that but what my question was is how is it different in performance of a twisted coil. Seems essentially the same thing. I'm currently using 30 ga twisted and then coiled up to 5 wraps at .9 ohms. Gets hot fast and has the surface area. Varos Vapor has a good video describing the process.

I may try out this parallel and see the differences. Or if it gets the job done easier than a twisted.

It seems you get more wire touching the cotton on a parallel build versus a twisted build. I think it's also really just a matter of opinion and preference too.

 

[johndoe1027]

Is it tricky to get both wires under the screw head?

It is. Once I had made the coil, with it still around the drill bit, I twisted the tails so that they would stay under the screws better. I'm really glad I did that because 2 separate wires don't really fit under there. I wish I had a real camera so I could show you. My phone camera is great but doesn't do macro shots at all. With the twisted tails its holds tight. As usual you want the tail to curve around the screw so that as the screw tightens, it pulls the tail in as opposed to pushing it out. Tail bent to the right when looking down at it.

 

[chiliphil1]

Chiliphil it's not hard. You just get 2 pieces of wire straight, and wrap them side by side as you go. Plenty of good vids on YT. Better than I would do.

Right on, I think I am going to try this next time I wrap a coil on my kayfun. It looked like it was more complex almost like wrapping a mini coil then making a bigger one on the outside, but wrapping 2 strands together doesn't seem so bad.

I think the chimney coil is one of my next experiments too. This is why I love vaping, there seems to be no end to all the things you can do.

 

[chiliphil1]

Oh, one other thing. When you do a parallel, does the impedance drop in half as it would with a dual coil RDA? I am trying to figure how many wraps I need and I can't go too low as my MVP only handles down to .8..

 

[FFPetz]

Oh, one other thing. When you do a parallel, does the impedance drop in half as it would with a dual coil RDA? I am trying to figure how many wraps I need and I can't go too low as my MVP only handles down to .8..

Yes it does. Think about each parallel coil or wrapped coil as adding another coil to your setup. A parallel coil wrapped 5 times is like putting 2 5 wrapped coils in your RDA. If one 5 wrap coil is a .8, 2 will be .4 as well as a 5 wrap parallel.