Experts help needed on RM2 coil builds

[oplholik]

Currently I have an 8/7 wrap with 28AWG Kanthal, metering at 1.25Ω, using a cotton wick. I would think that being used to a 1.5Ω atty that this would do it for me, but I can't seem to get it there. I have also tried 30AWG Kanthal with no real satisfaction. The vapor I'm getting is just ok, and there is no real warmth when drawing on this. One thing I've noticed is that my coils don't glow orange when hitting it, like it's not really heating up. I know that this should be able to satisfy me like the atty does. Do you have any suggestions?

 

[Raynman]

Far from an expert but less coils will make more vapor.

 

[Evil Speakers]

I'm no expert as I have only been using the RM2 for a few weeks, but performance greatly improved for me when I started using less cotton. I'm now using just enough so that it touches the coil all around, but still slides in and out of the coil easily.

 

[Big Hitter]

I've found I need to go down to at least 1.1 to = a 1.5 ohm disposable .........
Thats about all I can add I don't use the RM2 ...... Sorry.

 

[JC Okie]

Make sure your screws are tight. That coil should glow white hot when you dry burn it (remove the cotton wick.) If it's not glowing white hot, then there's a problem. Are you using AW IMR batteries?

EDIT: Also, dgmcfarrin is right.....too much cotton is not good. make a wick just thick enough to slide in pretty easily and touch the coils. Too much will choke the atty and cut off both vapor and flavor. I told someone (and it's true) I can get at least two (maybe 3) wicks out of the tip of a regular Q-tip. That should give you some idea of how much cotton to use.

 

[Raynman]

Placement of the coil in relation to the air hole is a key factor too. Show a pic of the coil to let us see what you have and the experts will help get you on the right track

 

[johni]

Your coil shouldn't glow while hitting it, only when dry burning. The advice above is good, just drop a wrap or 2.

 

[Evil Speakers]

A Reonaut as respected as JC Okie said I was right... Oh yeah, it's a good day!

 

[oplholik]

Ok, I'll try taking a wrap off that coil and using less cotton. Thanks for the tips.

 

[KwhyLE]

Here's stats vid. That is, if youre up for micro-coiling.

 

[JC Okie]

A Reonaut as respected as JC Okie said I was right... Oh yeah, it's a good day!

 

[oplholik]

Here is a pic of the current build.

 

[johni]

Looks like it should work OK. The neat thing about building coils is finding what works for you. Holler when you need help.

 

[JC Okie]

Here is a pic of the current build.

View attachment 246900

I would take 2-3 wraps off that...I think you'll get the warmth and the vapor you're looking for. I know that I used to love 1.5 ohm attys before rebuildables, and now I wrap .8 ohm coils for my Grand. So, maybe just shoot for lower ohms to get the same effect. It doesn't look like too much cotton.

 

[oplholik]

I would take 2-3 wraps off that...I think you'll get the warmth and the vapor you're looking for. I know that I used to love 1.5 ohm attys before rebuildables, and now I wrap .8 ohm coils for my Grand. So, maybe just shoot for lower ohms to get the same effect. It doesn't look like too much cotton.

Thanks, I'll try that. I re-wicked for that pic with a smaller amount of cotton. Will a AW IMR 14500 drive a .8Ω coil?

 

[Ebred]

Cotton wicks juice very quickly. Creating a warm vape will be hard since cooler juice replenishes the wick quickly when you're vaping. If you want a warm vape, then SS mesh is better. The mesh gets very hot and little heat from the coil is used to create vapor and more into heating the vape. If you get the cotton wick hot somehow you will get a warmer vape.
Silica will get you a warm vape too, but you'll likely also get a burnt taste.

 

[supertrunker]

i use 3mm silica - a 3/4 wrap of 32g kanthal - 1.6Ω.

For HRHs stuff you understand

T

 

[supertrunker]

The trick to a warm vape with the RM2 is not ss mesh at all, but to seat the coil lower than the airhole. The same goes for ss mesh and hybrid ss mesh and cotton wicks.

Lower = warmer, higher = harsher and more throat.

T

 

[pdib]

Thanks, I'll try that. I re-wicked for that pic with a smaller amount of cotton. Will a AW IMR 14500 drive a .8Ω coil?

I think it was the 14500 whose max. continuous discharge rating wanted a coil @ or over 1.1Ω.

Just checked; yep, its a 4 Amp rating. This would go a long way to explaining why your wire isn't glowing very quickly. I had thought that (I looked at your pic &) an 8/9 wrap was a bit much anyway. Its probably a combination of things. The battery (ESPECIALLY if not fully charged), a little too much wire (or too thick a gauge), and a little loose on the micro wraps contacting.

 

[super_X_drifter]

In addition to wrapping a coil with couple of less wraps, I would position it so it is a little further away from the posts. Just be careful that the coil is not out so much that it could contact the cap or rim of the atty.

The amount of cotton in your pic looks good.


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