Do you rock a single or double coil?

[jamesfarrell]

Curious. Got my RM4 today. Built it up to about .70 ohms. Tried some readyx wick in it. Not too happening. Tried some of that Japanese cotton, seems to work better, But the hit is very airy. I'm thinking of throwing this thing in the bin and just using the RM2 which works great.

I'm wondering if I'm just not use to the dual air holes? Flavor leaves a lot to be desired, TH is good, Vapor is good. I tried moving the center piece a little so some of the holes on either side are covered, but it's still a very airy hit.

Here's some pics

 

[TraceyS]

I hit the RM4 off of a friends and it was very airy. I am not an airy vapor....I always am plugging holes lol. I use the RM2 around 1 ohms build but since I got the RM3 I've been vaping around .52 and it so good! The RM3 is a great atty! I've used it only since getting it.

 

[jamesfarrell]

RM3 as a dual or single coil build?

 

[TraceyS]

I have the dual coil but I've read here you can use it as single also.

 

[Train2]

I mostly run singles in tiny little atties (Chalice, Cyclone), and I'm sort of in between - a restricted lung hit or a MTL hit...depends on what I'm running at the time.

But I keep a dual in my RM4, and it's the first dual I was really happy with.

Just to be certain -
You want an airhole in front of each coil. WHICH airhole depends on how open you want your air - you have 3 sized inside holes to choose from. Then the outer ring covers all the other holes you're not using. I find this gives plenty of control over the draw...

For missing flavor, I'm not sure - I'd fiddle with the coil height and wicking perhaps - although it actually does look pretty good.

 

[jifjifjif]

I rock parallel coils. One piece of 28g wire folded in half and then wrapped 4 times around a Q-Tip shaft. Comes in at .5 ohms and kicks serious .....

 

[Papa_Lazarou]

With the RM4, I run duals. You might want to lower the resistance a tick, maybe to .5ohms - I find the RM4 doesn't behave as well with higher resistances (at least, I don't like the vape off of it as much).

IMHO, it's never going to give you the same flavour burst that the RM2 does, and it's really more of a direct lung inhale atty. You can MTL it, sure, but it feels more "natural" to have the air more open and DL'ing it. For some folks, it's the cat's ...., though.

If you wanted to maintain the flavour characteristics of the RM2, but step up the vape intensity, the RM3 (dual version) would be a very good choice.


ETA: heh - the forum software edits out British slang, too (good to know)

 

[muzichead]

My first dual coil atty was the Atomic, (RM4), that I modded myself. It was a great stepping stone for sure. I always rocked duals on it in the .5Ω range. It does have some good air to it. Something I did with it was run a drill through the internal side of the AFC smallest hole that is used for single coil and went through to the other side. I think they were like 1/16" and that made the draw much better to start with for duals. I eventually graduated to the larger holes as the small ones just weren't enough after a short while. It now resides in California with Kentastic... Last I heard he was rockin' it on something... Only thing I would suggest is with the RxW you need the coils to be slanted towards the deck and run the RxW down to the deck where it is just touching. You don't need a tail out of the other side of the coil. It will wick just fine that way. Good luck with yours.

 

[HecticEnergy]

Running dual coil on my zenith with sloted airflow 3/4 open. great lung hit, ok flavor. 28ga built around .5
I prefer my cy-clone built around 1.4 ohms single with RxW.

 

[Rule62]

I love my RM4. I run duals in mine, about .45 ohms, KGD cotton wicks. I use the middle set of holes.

 

[Vamoman]

Atomic rm4 in dual coil mode around .3ohms

 

[Roscoe01]

Try a different drip tip....drip tip bore size can make a dramatic change in flaver. Ever wonder why the silly tip on a kayfun?

 

[six]

I just this moment finished rebuilding my Reomizers...

RM3 dual coil - ditched the readyXwick and went back to cotton. 6 wraps 29 ga around a 1/16th shaft each coil 1.1 ohms for a net of .55. Makes lots of warm flavorful thick vapor with nice short drags.

RM2 - Decided to use up some of the 28ga kanthal I got with my RM1. Single coil - 7 wraps on the 1/16th and a long leg on the right side meters exactly 1.0 ohm. Did the opposite and ditched my normal KGD cotton for another try with the readyXwick. RM2 with a single coil produces nice flavorful thick vapor - less warm than the RM3 with duals but not what I consider cool.

The other RM2 - Single coil - 6 wraps 29ga on a 1/16th always exactly 1.1 ohms. I can't make it different then 1.1 ohms even if I try... KGD cotton. Nice warm flavorful thick vapor... ... However. Gee whiz. After reading this thread and jiffjiff saying , "parallel - 4 wraps around a q-tip [...]" and remembering that last time I read him say that, I thought to myself I'd like to try it... I might put my glasses back on and give that a go.

I prefer a tighter draw. The RM2 and RM3 dual seem to have an identicle draw and they seem to produce identicle flavor... vapor density isn't all that much different between the two, but the dual coils in the RM3 do indeed make the vapor a lot warmer. - I do not own the single coil version of the RM3. From what I understand, the difference is the cap. There's one air hole in the cap for the single coil version (and apparently the O-rings are different) but it has 3 posts.

 

[Papa_Lazarou]

I just this moment finished rebuilding my Reomizers...

RM3 dual coil - ditched the readyXwick and went back to cotton. 6 wraps 29 ga around a 1/16th shaft each coil 1.1 ohms for a net of .55. Makes lots of warm flavorful thick vapor with nice short drags.

RM2 - Decided to use up some of the 28ga kanthal I got with my RM1. Single coil - 7 wraps on the 1/16th and a long leg on the right side meters exactly 1.0 ohm. Did the opposite and ditched my normal KGD cotton for another try with the readyXwick. RM2 with a single coil produces nice flavorful thick vapor - less warm than the RM3 with duals but not what I consider cool.

The other RM2 - Single coil - 6 wraps 29ga on a 1/16th always exactly 1.1 ohms. I can't make it different then 1.1 ohms even if I try... KGD cotton. Nice warm flavorful thick vapor... ... However. Gee whiz. After reading this thread and jiffjiff saying , "parallel - 4 wraps around a q-tip [...]" and remembering that last time I read him say that, I thought to myself I'd like to try it... I might put my glasses back on and give that a go.

I prefer a tighter draw. The RM2 and RM3 dual seem to have an identicle draw and they seem to produce identicle flavor... vapor density isn't all that much different between the two, but the dual coils in the RM3 do indeed make the vapor a lot warmer. - I do not own the single coil version of the RM3. From what I understand, the difference is the cap. There's one air hole in the cap for the single coil version (and apparently the O-rings are different) but it has 3 posts.

A nice parallel coil on a RM2 is aces. Twisted works nicely, too. G'head, give it a try.

I hear you on the RM2/3 comparison, too. IMHO, the RM3 in dual mode is the RM2 x 2. Small deck to build on, tiny little center post hole so watch your wire gauge, but well worth any small struggle to get it set up. For MTL flavour junkies, it's very hard to beat, especially at this price point. If you're up to drilling ss, you can convert the single version into the dual just by drilling a second air hole (but get the dual version if you haven't got one yet to avoid the hassle).

 

[EddieAdams]

Prefer single. Feel like I lose flavor with double....

 

[zmauls]

If you're losing flavor with dual coils you probably have too much air flow. I'm not sure if the RM4 uses an AFC, but if so, try minimizing. If not, you could always buy some of that auto-repair cement to fill in the hole. Might look like hell but it would be functional. Better than letting it gather dust, if you ask me.

I started running dual coils over a year ago and I can't go back to singles. My current set up on my Tugboat V2 is a basic dual 5/6 wrap using 22G Nuke wire by Chadster, 3/32" ID. Meters in around 0.14Ω. My Mutation X is currently dual parallels, 5/6 wrap 24G Boom wire by Chaster, 7/64" ID, meters in around 0.10Ω.

By no means am I suggesting you try these builds. I'm just pointing out that I (read: exclusively) prefer dual coils over single coils.

 

[Roscoe01]

If you're losing flavor with dual coils you probably have too much air flow. I'm not sure if the RM4 uses an AFC, but if so, try minimizing. If not, you could always buy some of that auto-repair cement to fill in the hole. Might look like hell but it would be functional. Better than letting it gather dust, if you ask me.

I started running dual coils over a year ago and I can't go back to singles. My current set up on my Tugboat V2 is a basic dual 5/6 wrap using 22G Nuke wire by Chadster, 3/32" ID. Meters in around 0.14Ω. My Mutation X is currently dual parallels, 5/6 wrap 24G Boom wire by Chaster, 7/64" ID, meters in around 0.10Ω.

By no means am I suggesting you try these builds. I'm just pointing out that I (read: exclusively) prefer dual coils over single coils.

Brave man to run that deep with a 20amp battery.

 

[zmauls]

Brave man to run that deep with a 20amp battery.

35A, my bro. Fully charged at 4.2V it's pulling exactly 30A against the 0.14Ω build.

Also has a 50A PR for that .010Ω build. Only take about half-second pulls off that bad boy.

Efest IMR 18650 LiMn 2500mAh Battery - Flat Top - 35 Amp

 

[six]

35A, my bro. Fully charged at 4.2V it's pulling exactly 30A against the 0.14Ω build.

That efest is an HE2. The HE2 is a 20 amp batt.

 

[zmauls]

That efest is an HE2. The HE2 is a 20 amp batt.

Look at this:

https://translate.google.com/transl...ion-ces-batteries-sont-dangereuses/&sandbox=1

Thanks for the heads-up. That's why this forum is great, right there.

Good thing I have a bunch of VTC5's on back up. Might just toss these cylindrical purple lies.