Dual coil RM2 or Cyclone

[2buildawall]

Why dual coils? What do you get that is different from a single coil wrapped to the ohms you want? I can't imagine you get twice the flavor or vapor or is that why folks do it? Do the extra coils drop the ohms down? It is already such a small space to work in but certainly something I would like to try.

 

[supertrunker]

I have made parallel coils like this for the longest time. I initially did it because the RM2 has one airhole and i had a load of 32g wire. So no drilling.

The benefit is that your coils are the same length, always. Also thinner wire heats a lot faster (and cools faster) than thick wire, just because of the mass of metal for thicker wire that has to be heated. For a single coil to hit say 1Ω i'd use 26g wire.

How to make them - take a length of wire and fold it in half. Wrap it. Chop the ends of and finagle them into the post holes.Something like this.

T

 

[ed101z]

I have made parallel coils like this for the longest time. I initially did it because the RM2 has one airhole and i had a load of 32g wire. So no drilling.

The benefit is that your coils are the same length, always. Also thinner wire heats a lot faster (and cools faster) than thick wire, just because of the mass of metal for thicker wire that has to be heated. For a single coil to hit say 1Ω i'd use 26g wire.

How to make them - take a length of wire and fold it in half. Wrap it. Chop the ends of and finagle them into the post holes.Something like this.

T

I bet the hit on a rig like this would be better than using single coil. Would using double 32g wrapped this way be equivalent to, say... a single coil of 28g or lower?

 

[Honkey Kong]

Nowhere near compatible. They are the Coils I use, and they hit way harder than any single coil you make, even though it kind of is a single coil. To make it more understandable:

1. Say 6 wraps gives you a 1 Ohm coil.
2. When you do dual coils your Ohm cut in half.
3. So now you need to make dual 12 wrap Coils.
4. Technically you get a single Coil that is 24 wraps thick. (Two Coils wrapped together, or Double Coil as I call them).
5. That is a ton of surface area to vaporize joose!

 

[thewomenfolk]

Honkey...what gauge wire are you using for that coil and do you just put 2 wire legs in each post hole?

 

[Honkey Kong]

I use between 26AWG and 30AWG. And I wrap my coils Coils on Drill Bits between 1/16" and 1/8". Yes, you just take two wires, wrap them simultaneously, put one set of legs into each post hole.

Currently I have a 8 wrapsx2 of 28AWG wrapped around a 7/64" Drill Bit. It meters about .8 Ohm. I cheated a bit and used twisted wire for this build. I spin two together with a drill and a pair of pliers. Basically the same thing as the Parallel Coil, still using two wires, these are just twisted and look like rope or braided hair.

 

[olefolks]

Here is a double wire wrap 32ga. 12 wraps. It came out to my preferred ohms of 1.6. Can't wait to try it with some ReadyX.



I used the Artistic wire gizmo to wrap. Worked fine.

 

[Filthy-Beast]

Looks good, How's the heat up time?

 

[fargazer]

For me, I make one coil with a screw, then further down the end toward the spool I make a second coil with the same screw. On the atty, I place one of the post screws between the two coils, bend the wire around the screw, and tighten. Not quite the same though; if you do it using the holes in the posts you have to coil the wire while it's fastened to the atty. I've never tried that.

 

[olefolks]

Looks good, How's the heat up time?

The heat up is rather slow and the flavor was not as good. Probably because of the amount of the wick that the coil covers. I'm going to soak the wick for a while and then check it.

 

[six]

Something else to think about is twisting 2 pieces of wire together and wrapping them as one coil. It's super easy to install in the post holes... The first week of playing with my RM2s, I tried a few 'exotic' coil set ups to see what I might decide to go with. I doubled over some 29ga and twisted it up tight holding the ends with my leatherman and running a pencil through the spot that was doubled over and using that to twist it up tight... I was able to make a single coil of twisted wire that had a lot of surface area that came out around 1 ohm. ---> I didn't end up making that my permanent setup, but it worked, heated up fast, and was really easy to install.

 

[ed101z]

I tried the following:

30g - Two wires adjacently wrapped as single. Did 7 wraps (14 coils) on 5/64 for 1.05 ohms.
Flavor and taste was spot on. Vapor was dense. It rocked... for awhile. After about 5 hours, I noticed it took a little longer to heat up. Consumed more juice (because coil was longer, and had more surface area), and it drained the battery fast. The experience was great ...until it took longer to heat up.

29g - Single coil of 8 wraps on 5/64. Came to 1.4 ohm.
Flavor and taste was just as good. Slightly cooler vape, but seemed to bring out a sweeter taste of the juice (NET from HHV). Vapor is slightly less dense by a hair, but still good. Heat up time is faster, and maintains it as well.

So, all in all... I believe I'll stick with a single coil. Didn't really see an out of the ball park difference -- except for hotter vapor, more battery drainage, and a slightly harder throat hit. However, I did use 30g... not 32g for the testing. That may have made a difference. Two thinner wires at 30g may have made it to close to call when comparing it to one single wire of 29g.

It's easy to forget about how much of a factor the juice plays into vaping. PG/VG ratio; NET juice or synthetic juice; dark and light juice will have an impact on your overall coil performance. Some NET juices will kill any coil. The hotter the coil, the quicker it seems to induce coil gunking.

For my tests, I used Shadow (NET from HHV) at 50/50.