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How low do you go? Super Subbing
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Nihilum Offline
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Post: #1
How low do you go? Super Subbing
I'm curious...what do you guys build down to on your RDA coils?

Personally, all 5 of my RDAs that I use on my IPV3 or WoodBox are built at .15-.23 Ohms. (24-26 ga. dual coil parallel or twisted parallel)

The triple 26650 mod pictured in my avatar is currently built at .04-.05 Ohms. (20 ga dual coil single strand 4 wraps)

I know a lot of people think that going that low is crazy, but it's within the safe zone for that particular box. 
21-03-2015 05:30 AM
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Don Offline
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Post: #2
RE: How low do you go? Super Subbing
For a single 18650 |i never go below 0.2

In fact, on just about anything I don't go that low.

More volts is better than more amps.

And round cells really shouldn't have a place in vaping - they are being pushed too close to increasingly exaggerated limits.

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http://www.preventsuicideapp.com

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21-03-2015 11:03 AM
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gords1001 (03-22-2015)
Pulsar Offline
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Post: #3
RE: How low do you go? Super Subbing
Round cells do have a place in vaping, just not as extreme as they are being pushed lately. Was not too long ago that below 1 ohm was very uncommon, and 1.5 ohms was considered low resistance. When I really got into vaping I was using 6v and a 1.8 ohm atty (standard 510), then went to 2.0 ohm dual coil cartos, and those were considered pretty hot builds 

Just for comparison of then and now, when I was using a 6v mod (6.4 fully charged) with a 1.8 ohm atty I was getting about 23w.
Now I am getting over 44w on my current build, and about 70w on my last dual coil build, not factoring in voltage drop

My current build is a single 3.5mm coil with 9 wraps of 22g kanthal. Comes out to about 0.4 ohms. Got both airflow holes on the Magma wide open. Its working surprisingly good for being a single coil.

I had a dual coil setup on it at 0.25 ohms, but I think it was too hot for the available airflow in the Magma. It would work great for about a day, then would start getting a nasty chemically taste. I thought it was just because I used the same juice so long, so I cleaned it out and re wicked it, and same thing with new juice.

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21-03-2015 02:19 PM
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JohnnyMac (03-27-2015)
Michael Offline
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Post: #4
RE: How low do you go? Super Subbing
I've come to a point where super subbing isn't really needed. Using my Sigelei and God Mod, I get better clouds just by turning the power up so there's no real reason to go super sub ohm. Lately my builds have been around .50-.70 and that's been good enough. I sometimes build super sub just to show off, and when I do it usually ends up around .15 ohms. I don't really feel comfortable going below about .20 ohms because I don't want t9 get too close t9 the cell's limits. 
21-03-2015 03:06 PM
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Nihilum Offline
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Post: #5
RE: How low do you go? Super Subbing
Yeah, .15-.25 is the range for most.  The only coil I build down to .05 is the custom box which is the warranty max.  I do it that low because I like having no ramp up time and nice warm vape.

This box is also the big conversation piece when I'm at work.  New vapers are seeing it sitting up on the counter, and after a few "Im over-compensating" jokes, they usually get really interested in learning the mechanics of how a vape actually works, so I'm getting my teach on as well.

The final reason...I simply like massive clouds.  I can't participate in official cloud comps in my area because Im a vape shop employee...but I can still compete for who buys lunch or dinner....I generally win.
22-03-2015 07:05 AM
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Michael (03-22-2015)
gords1001 Offline
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Post: #6
RE: How low do you go? Super Subbing
i can no longer directly measure my coil resistance accurately, i have to measure voltage at the posts using a fluke and current in the positive lead then calculate the circuit resistance.

The difference is i now purely see li ion cells as a novelty, or back up, they simply dont produce what i am looking for if using rda's.

I am planning on getting a genesis or two in the next couple of months, these would be coiled much more sensibly and fine for an li ion supply.

I agree with Dons assessment that for anything below .2ohm, li ion cells have no place and there is really no excuse for using them that low, it costs as much to set up a lipo box and a suitable charger as it does to setup a multi li ion cell box and a lipo pack is as cheap as a pair of 18650 cells, never mind 26650 cells that are by nature more saggy due to a higher internal resistance.

The net result of switching to lipo is greater run time, massively improved safety and more voltage to the coils on any build you want to try.

As an example, in some testing yesterday, a friend who owns a vape shop had a .12ohm rda, we put it on a dimitris clone, got 2.7v at the posts, which is a dangerous level to be at. Same cells in a classique netted 3.1v to the posts. Screwed the rda on my new lipo box, and despite the pack only sitting at 4v due to use, it was still showing 3.7v at the posts.

The difference was extremely noticable in use.
22-03-2015 09:44 AM
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Nihilum Offline
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Post: #7
RE: How low do you go? Super Subbing
Actually, my setup has absolutely no noticeable sag.  My box is a triple 26650 parallel...don't have to worry about sag as the battery drains.  Sag starts at about 3.5 volts...it takes me several days to drain them that low....which is also where I recharge them.  You have to keep in mind that in parallel the voltage stays the same...but the mAh of the batteries combine, so I have a 13500 mAh setup which means unless it's the only vape I use...which never happens...it'll last a week before you would notice any sag at all.
26-03-2015 06:18 AM
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JohnnyMac (04-11-2015)
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Post: #8
RE: How low do you go? Super Subbing
Most of my builds end up around 0.3ohms
27-03-2015 10:08 PM
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BioHazardCustoms Offline
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Post: #9
RE: How low do you go? Super Subbing
Generally, I tend to stay between .25-.35 ohms.
28-03-2015 09:24 PM
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Michael Offline
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Post: #10
RE: How low do you go? Super Subbing
I just got a new Big Dripper clone, and since the included coils looked pretty good, I put them on it instead of wrapping my own. Tested at .16 ohms and it's vaping like a champ. That's the lowest I've gone in quite a while Tongue
29-03-2015 04:42 AM
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