question about sub-ohming on the reo

[jakart]

So I pretty much only use my Reo since I got it a couple weeks ago. It's exactly what I was looking for.

Mine is new so it has the upgraded contacts for sub-ohming. I've been running it at .22 ohms with no trouble so far, it doesn't even get hot in my hand like most of my other mechs do.

I was just wondering if there was a lowest recommended resistance for the Reo with the sub-ohm kit, and what problems I might run into if I run it too low. Thanks!

 

[jimkipila]

What atty are you doing .22 on?


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[Filthy-Beast]

Assuming you batteries can handle. If you go too low or very low for a long hit the spring will heat up and start to sag or collapse.

The spring acts like a fuse, it does this by turning high amps into heat that will cause it to soften and collapse. A short does this very quickly protecting your battery. When pushing low ohms it can also heat up and soften.

I cannot remember exactly but somebody did collapse the spring at something under 2 ohms but I cannot remember the exactly. I think it was sub .17 but I'm not sure.

Also our meter are not very accurate at low sub ohms and small changes have a bigger impact.

.5 ohm change from 1.5 to 1.0 only increase amps by 1.4 amps, while a .5 ohm change from .22 to .17 increases amps by 5.61 amps.

If you want to play lower I'd suggest having some spare spring handy and please report back what you find as the bottom ohm it can take.

 

[MattyRetro]

I believe the sub-ohm kit that comes standard in all REOs is only rated down to .5 ohms. Anything lower and you are using the device outside of what it was intended to do.

 

[Filthy-Beast]

.6 to .5 was the point with the older contacts that would drop the spring.

 

[jakart]

I'm using a zenith v2 with the bf center post.

But yeah, I've noticed how big small differences make at low resistances. I have vtc4s so my batteries can handle it.

Might get a few spare springs tho. I'll keep an eye on the spring for softening


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[mvroman]

I've been vaping between .3-.5 ohms for the past month on mine with zero problems.

The only person I've noticed that collapsed the new spring was when he had a possible hard short between a loose screw and the cap for his atty.

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[supertrunker]

Here's the thing - as FB alluded to, the margin of error of your multimeter starts to play a part, but i don't think it does much damage.

Let's play a little game: i'm running 30A batteries - so theoretically i can run coils of 0.14Ω. That's a constant discharge rating - and really since batteries age and some are made by liars, i like to run at maybe 80% of that battery capacity so 24A maximum.

That bumps my coil up to 0.175Ω - for safety yeah?

What about my meter - well they all have a margin of error, but it's nothing huge at all - even cheap ones are like 0.05%
Digital Multimeters Review, Page 5 - Robot Room
See the resistance reading there at < 1Ω?

So - 2 things: Use the formula wheel and the best batteries you can. If you're low sub-ohming on 10A batteries - a fun time awaits you! So know your battery specs. I use different batteries for different mods and different coil builds.

I run duals on an Atomic on a LP sub-Ohm kitted Reo at 0.3Ω, with a spring and not a fuse mod. The spring will sag at some of the resistances above and they are also not fun to vape, even cloudchasing!

T

 

[Rickajho]

I recall from the sub ohm parts discussion thread that the low end limit for the new parts was 0.2 ohm.

 

[supertrunker]

So in other words, as low as you dare given that you have clean contacts and know your batteries!

The other side of the kits, and it's a pity they are referred to as SO or Sub-Ohm kits is that even if you use higher Ω coils - say 1.2Ω (you realise that about a year or two ago they were called low Ω right?? cos all cartos were rated that way, based on what electronic devices could fire), you still gain from the deal from less cleaning of your Reo and longer battery life.

Less cleaning and the same battery lasts longer... yeah!

Just mentioning it is all. The lung-burning lobby of Reonauts is a vocal and persistent bunch, but there are benefits for everyone as a result.

T

 

[jakart]

You guys are giving me exactly the info I need. Thanks!

I've tried lower resistances but they were unpleasant. Too hot to hit for more than a second. But somewhere in that .2 to .24 range is my sweet spot for sure


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[supertrunker]

Also, you whack an RM2 on a Reo and it's nothing like vaping a tank that i see in your avi pic. It's just not the same at all.

Which is not to belittle anything, just an observation - it's a more direct feeling connection between liquid- atty - and vape.

T

 

[jakart]

Right I should change that pic, haven't used a tank in over a month

No, I like the vape I get from a tiny atty too, I have an RM3 and it's very nice. But I really love the wide open airflow I get from the zenith. I like the atomic/RM4 too, but the zenith tops it. A little less flavor, yes, but an overall more satisfying vape for me. But I've heard a lot of people here sing the praises of the RM2, I'll be scanning the classifieds for one cause they can't all be wrong

 

[Rickajho]

They rarely show up in the classifieds as individual items for sale. Most times when they do show it's in context of selling a Reo and the seller has no reason to break them up - the combo always sells fast.