Sub ohming - i know its old news for most but new news for me ... Question

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Fortyniene

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If I'm not mistaken... most 18350 batteries have a 8.5 amp limit which means using it unregulated you can safely go as low as 0.6 ohm and still be safely within the limits pushing 7 amps and leaving a little head room for error (Please note: This is an extreme and probably not recommended for daily use).

Wow

What was the point of this post? This kind of misinformation is very dangerous. Please try to error on the side of caution. Lets not blow up the newbs just so we can try and look smart.:evil:
 

Ryedan

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So say you have an IMR 18350 and a Genny atomizer with 1.8 ohms. I usually do 4-5 wraps of .28 on a SS mesh. So to sub ohm, you would simply do less wraps correct?

To me, that results in a more burnt taste and unbearable throat hit. Am I missing something?

Ryedan - can you explain this : (i guess i obviously dont do this) :"Do you look for shorts and pulse them out? I always fix a short as soon as I notice it. The higher you take the power (less resistance) the more important this is. "

One more thing :). I finally got my second rm2 for my reo and i got a little drill happy since i had two now and experimented with one. I started drilling hole slightky bigger slowly then i thought i went up to next bit but i think i had skipped a bit and ended up drilling it out a little too much. Now its quite airy of a hit - i didnt quite realize how much i like denser vaporer and mouth to lung hits - a smaller airhole would provide this right ? Im just .... out of luck huh. - have to buy another one i guess ? I cant think of any fixes to narrow the hole. I guess its like a haircut - you have to tell the lady to cut a little at a time - you can always go shorter but you cant cut short and put hair back on (if thst makes any sense).

Pulsing out shorts is something you can to with stainless steel wicks to get rid of shorts. It was in response to jamesfarrell's post. With the RM2 or any other setup that you use non metalic wicks in you can not have shorts through the wick, so ignore this (unless you one day decide to try a Genisis type atty ;)).

On the big air hole, you could try filling in the hole with epoxy, JB weld is probably the best for this and then drill it out again smaller. I hesitate to say this though because I don't know how safe it is. Epoxy is quite good for not reacting with chemicals once it has set and there will not be much epoxy there. OTOH it is in the air flow all the time. If it were me I would use this method to try different hole sizes, but not use it for long. I would go to the Reos Mods forum and ask there. I know the guy who makes these devices posts there and he is very helpful. You just might be able to buy a new cap.
 

Ryedan

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Maybe using some 100 percent vg which i have never used before will help on the rm2 with the larger hole ?

It's not going to help you. You've got two choices. Change the hole size, or change the way you vape.

The up sides are you'll never make this mistake again and you now have one cap with a large air hole you can use if you ever want to try a higher power setup in your RM2s. Also, you could put it up for sale on the classifieds here. Just check what size the air hole is and put that in the sale posting.
 

flexsr

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.... Yep live and learn, contact vendor for new cap, or change way vape or classifieds - not end of world - I always make mistakes with this hobby ! Damn it ! :) --- I started vaping In 09 buying every Chinese made kit for 100 bucks that cost them 1.50 to make - you would think I would have learned by now in the mistake department - thanks for your info on this thread - very helpful - gracias
 

jamesfarrell

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I take it you mean 28 gauge when you say '.28'? If so, a 4/5 wrap should be less than 1.8 ohms, unless you've got a bigger than average wick hole and you're filling it up. I get ~0.5 ohms from a 3/4 wrap of 27 gauge in a AGA-T with a wick hole drilled to 1/8".

I suspect if you're having burning issues with your setup you have shorts, AKA hot spots. Check the resistance when it's burning juice. I bet you'll find it has dropped. Do you look for shorts and pulse them out? I always fix a short as soon as I notice it. The higher you take the power (less resistance) the more important this is. A lung-full of 0.5 ohm (about 28 watts on a fresh battery) burnt hit is not good! Seriously.

I use the cigarette paper method. Usually no hot spots, I never really pulse without juice. Yes, 28G Kanthal wire and 400 mesh.
 

Bosco

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I've been experimenting with different ways to build coils. Lately I've been enjoying ~.6 ohms in my trident clone and I've gotten there several ways . . dual coils, singles with varying wraps/diameters, etc.

I was surprised but I find I prefer the vape experience in my trident with a single coil. Between a coil with wraps touching (in micro coil fashion) or not, I could not tell the different in flavor. I could tell the difference with twisted wire . .but I prefer non-twisted wire.

It's hard to describe the differences in flavor but, to me, the dual coils were underwhelming. The flavor and vapor production was good but not good enough to justify the extra work. I like a single coil just as much, if not better. The twisted wire kind of tasted sharp, if that makes any sense. The flavor was there but it was more on the hot-side but not burning . .if that makes any sense, lol. I do know that I really prefer a 3/4 wrap of 28 gage and it doesn't matter to me if the coils are touching or not.

That's only for this one rda, though. My preferences are totally different by device.
 

SLIPPY_EEL

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why not use a bit of tape over half your airhole to tighten up the pull

someone else was asking about how you get around the harshness on low ohm's, cut back on your nic :)

single coil of 32g twisted, closed coils, nano or super nano without a wick just a bed cotton underneath or dragon style is as good as anything if not one of the best on my trident imo, but even a 1-1.2 ohm 28g microcoil is good, dammm... come to think of it, anything I make is good :D
 
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KenD

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I would be careful with this one. It is Alibaba. I don't find anything on this battery elsewhere to confirm 10A.

I've seen those batteries (the purple efest 18350s) listed at a number of reputable vendors but have yet to find anyone who actually have them in stock. I buy my batteries from a specialist battery vendor in Germany. I trust them, and they informed me that they'll be having those efests in stock, which leads me to believe that said batteries exist and are legitimate. Having said that, I would not order them from Alibaba, eBay, or anything but a reputable vendor.

Sent from my GT-I9100 using Tapatalk
 

flexsr

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Could try tape - but it gets really really hot the vapor coming out of that hole - would have to be the right kind of tape - im sure they make some i just dont know het what its called. ---- its such an airy vape with the big hole :(. I didnt realize what a big fan of a stiff draw and mouth to lung vape until now :). I actually tried twisting the cap a little so the airhole is not directly in front/aligned with the coil and seems to heat up the vape n make it a little less airy --- Look in paper tomorrow. Man suffers 3 rd degree burns by setting duct tape on fire in front of his face :( sniffke
 

flexsr

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More coils im building the more i realizing how important wicking is - i use cotton. Ive yet to find a great system in terms of denseness and length of wick for the sub ohm builds - i tend to like the fewer coils to allow for wider wraps so i can get a decent size piece of cotton in there - im kinda going with the theory that the cotton should be able to pass thru the coils with slight tension on them - but i still have no idea on how long to do the tails - more trial n error i suppose and im sure its different with each rda/rba you use, e liquid? And what type of vape you going for ----- who would of "thunk" there is so much involved - jenny mccarthy makes it look so easy and satisfying in her blu e cig commercials
 

jameth

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A RM2 is chrome plated brass, so to close an airhole without epoxy it is possible to dril the hole just smaller than a brass machine screw and snip the screw off, sand it down etc and drill a new hole.

Bit of tape on the airhole - really! :facepalm:

T

I did something similar with my IGO-S.

I massacred the poor little top cap, it has 4 holes at varying heights, and only one that is usable.

My holes were all 1/16th", I simple shoved a 1/16 piece of brass rod in each hole, snipped it off, and grind down the remainder, the end result is a perfect fit, that is held in by the expanded ends of the brass that I ground down, air and liquid tight.
 

flexsr

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Thx "fit". Yeah i have to work on this top cap hole. I dont know what inwas thinking. I went superslow at first just to experiment as quite new with this rebuildable stuff. Nothing seemed to happen at first so i went larger despite the advice i got to go real slow !!!! Lol -- never realized how much i hate an airy vape. Thank god for my one other with stock opening but ill try that technique on the broken one. These are only two rbas i own and own 2 reos so want them both working good :). Nothing like a dense thick vape. I didnt realize all the flavor is held in that thickness - yet there are people who like it airy too. So many diff preferences.... sign me up for some dense vapor ! Thx for the repair tip !!!
 

Revelene

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Wow

What was the point of this post? This kind of misinformation is very dangerous. Please try to error on the side of caution. Lets not blow up the newbs just so we can try and look smart.:evil:

If they are not smart enough to understand what "If I'm not mistaken" means and to look into it themselves then they should stay FAR away from rebuildables.

My bad for thinking they had an 8 amp limit... it was covered in the previous posts... where were you? Oh, you ARE one of the ones that don't read other posts. I see..

Here it is since you missed it.

Revelene said:
It appears that I was mistaken. I don't mess around with small batteries. Anyone rebuilding should know their battery well and its amp limit. I figured it was somewhere around that (hence the "If I'm not mistaken") so if that was me using that battery I wouldn't go below 0.9 (and that would be borderline).

Nice battery chart. :thumb:
 
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