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Battery safety and Sub Ohm vaping...

I personally wont buy aw imrs for this reason amongst others, there is no available data sheets on them, couple that with the fact there are better alternatives available, at least in 18650 flavour, and I just dont see the point.

With regards to sub ohming, I take my drippers to .8 ohm, both me and my cells are happy there, but if I wanted to go lower, I'd be looking at the newer high output sony and samsung cells, or looking to use a box mod with a high output lipo or one of the 26700 moli cells I have, 50a continuous discharge should be ok.

What people dont get is your putting a pretty much dead short on a celk that can vent poisonous gas and/or flames if you dont play nice with it.......both when in use and when charging, this stuff can seriously mess you up, and all for what? Blowing out a slightly bigger cloud of vapour.

Great post, thanks for sharing.
 
Apart from their beauty, what is the appeal of mechanical devices, what with coil resistance, high wattages, exploding batteries and general inconsistently? I set my Vamo v5 between 5-7 watts depending on the juice and get what I believe to be loads of tasty vape. I don't have to know what the resistance of my current Cartomiser or tank is unless it's less than 1.2 for the vamo. That chart that gets shown around this forum from time to time says that the sweet spot is from 4-8 watts - whatever the coil resistance. Anything more and you'll fry the juice. Anything less and it's too weak. So, when I hear some people saying they vape at crazy high wattages with mechs I wonder what that tastes like. Power is power, independent of resistance and voltage. Power is what determines the "work done", ie the cooking. Am I missing something?

Edit : sorry for posting this here. I tried starting a new thread but tapatalk kept saying that the forum wouldn't accept new posts.
 
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Power is power, I agree there, but there are different ways of achieving that power.

The other thing is, that chart is imo very old and outdated, its applicable to clearomiser's, I'll grant you, but they deal with tiny wires, limited wicking and fluid delivery, rubber insulators, poor airflow.

When you see people talking about say a mech with a rebuildable atomiser and high output cell, starting at 35 - 40 watts and tapering downwards from the first test fire, their using much thicker wire, better wicking, much greater airflow, which in turn needs more wattage to maintain coil temp.

You use your vamo at 7 - 8 watts, I'm hazarfing a guess at some kind of clearomiser, I didn't get on with clearomiser's, I could also never smoke boxed cigs, both were too tight, I always smoked roll ups, in vaping I absolutely needed that same free airflow you get from drilled or more expensive styled atomisers with open airflow.

Build them with .2 kanthal and run it at 7 watts ony vamo, I'm lucky to get a whisp of vapour, my vamo currently has a fogger v2 with a 1.4ohm tiger coil (.5 ribbon and .25 wire twisted together ) I run it at 15watts and would turn it up if I could, no its not burnt, with cotton in the correct amount that it wicks without flooding, the flavour is amazing, my kayfun is running dual 1ohm ribbon micro coils, (I was hoping to get it high enough to run on the vamo too) again, its just above 15watts on a mech, no burning, the airflow is so much greater that the expected high temp/poor wicking/burnt juice doesn't happen, I have alchemists cupboard banana and cream in it, the vapour is like warm cream on the inhale, not much vapour on the exhale but a lovely after taste.


Yes power is power, its just not everything in the equation, you also have to consider what your applying that power too.

As a side note I use Panasonic based 3400mah cells in my vamo, I do use other mods alongside it, I like tanks and I like different flavours so as I saud elsewhere, I like to havr a few mods on hand, I get about four days out of one cell in my usage.
 
I too watched the videos of huge clouds produced from mechs+drippers & as I only had a few ex-laptop batteries that I was unable to source any concrete manufacturer data on them I built a battery box with 2 x 18650's wired in parallel.This was used as a means to continue vaping as both my Ego batteries expired within days of each other,and I was using clearo's.I had rebuilt the coil/wicks in the clearo's several times before deciding to have a look for a genuinely rebuildable atomizer made from metal so my favourite juice(banana)didn't dissolve the tank.I finally settled on an Aga-S as it was dirt cheap(about a tenner)and was all metal.When it arrived,I was shocked to find it was so tiny(17 mm dia)and the twin negative posts for dual-coils were for decoration as to have dual-coils,I'd have to refill THROUGH the wick.I learnt to build coils extremely neatly so I could slide a mesh wick through the coil once the coil was in-place,then to use just enough mesh to create a tubular wick so I could use dual-coils on the Aga.I also bought a Vamo to try various wattages.On a clearo,it tasted crap over 4-5 watts(top coils forever dry hitting)but the Aga would just about heat the juice up a few degrees at 4-5 watts,only producing nice vapes over 9-10 watts & its sweetest vapes were 13-15 watts(and only on a freshly charged battery)

I tried the Aga with its dual-coils on the battery box(2 x 18650's remember)and initial tests with a multimeter set to read amps drawn,showed that to get the coils spitting juice needed 3+ amps but at 2.8 amps approx,the switch I had used was getting hot enough to unsolder the wires as where the wires soldered to the switch was very thin pins.I sourced a better switch,& the battery box was safe to run upto approx 5 amps(self-imposed limits of the batteries as I'd only seen a post on another forum stating they were good for 10 amps)I also got a 3 post dripper to experiment on instead of using the Aga.

With the dripper,I ran a few experiments building coils & drilling holes for increased airflow(the original holes on the dripper were above the coils & tiny)Fortunately,the dripper also had an air control ring which allowed me to close off the original(widened)holes & I drilled new holes next to the coils.With the multimeter measuring current,I gradually lowered the coils resistance until I had dual-coils at 0.7-0.6 ohms but still only drawing 2.9 amps(according to the measured current,yet the online checker said it was 6.6 amps)Neither battery was getting warm,the rewired box(with thicker wiring)wasn't getting any warmer areas,the only thing getting warmer was the coils.I have also got a sample of Voodoo wool(4 mm ecowool from stealthvapes)onto which I wound two 4 wrap 0.3 mm coils(was a swine to build this as the drippers post holes are miniscule,the 0.3 mm wire only just fits through the holes & its tiny size means the voodoo is only 2 x half inch pieces)screwed the dripper on the box & soaked the voodoo in a hefty amount of juice(it holds shed loads)The result was astonishing for such a tiny crap chinese dripper,massive clouds of very tasty vapour.

http://www.youtube.com/watch?v=Ka_7n76pp0k


I now own a mech,2 x 30A 18650 batteries and have ceased testing the battery box as a)it suffers dreadful voltage drops with just a single battery(1.5 volts or more)and b) gets seriously hot batteries if I coil the dripper under 0.6 ohms .The dripper has suffered too,since I got the mech + 30 amp batteries,I have dropped the resistance to 0.3-4 ohms(little hard to decide the exact resistance as both multimeters have wide ranging results)and the insulator for the centre post has melted,so although it still works I can't get the swine to create a nice tasty vapour.The throat hit from a 12 mg banana+vanilla(used to taste like banana custard)is so harsh it's nearer banana flavoured sand-blasting the tonsils.I will be buying a new dripper later today,& have my eye on a W3 as these apparently have all that this shitty little chinese device lacked,room to work,posts a plenty for single-dual-quad coils & a juice well big enough to put some decent size lumps of voodoo.

Basically,what I'm trying to say is...don't knock sub-ohms until you have tried it.I admit,it isn't for everyone.The building of coils can be therapeutic or frustrating.

There are issues with powering sub-ohms that can result in you losing your face so be very careful.
 
Power is power, I agree there, but there are different ways of achieving that power.

The other thing is, that chart is imo very old and outdated, its applicable to clearomiser's, I'll grant you, but they deal with tiny wires, limited wicking and fluid delivery, rubber insulators, poor airflow.

When you see people talking about say a mech with a rebuildable atomiser and high output cell, starting at 35 - 40 watts and tapering downwards from the first test fire, their using much thicker wire, better wicking, much greater airflow, which in turn needs more wattage to maintain coil temp.

You use your vamo at 7 - 8 watts, I'm hazarfing a guess at some kind of clearomiser, I didn't get on with clearomiser's, I could also never smoke boxed cigs, both were too tight, I always smoked roll ups, in vaping I absolutely needed that same free airflow you get from drilled or more expensive styled atomisers with open airflow.

Build them with .2 kanthal and run it at 7 watts ony vamo, I'm lucky to get a whisp of vapour, my vamo currently has a fogger v2 with a 1.4ohm tiger coil (.5 ribbon and .25 wire twisted together ) I run it at 15watts and would turn it up if I could, no its not burnt, with cotton in the correct amount that it wicks without flooding, the flavour is amazing, my kayfun is running dual 1ohm ribbon micro coils, (I was hoping to get it high enough to run on the vamo too) again, its just above 15watts on a mech, no burning, the airflow is so much greater that the expected high temp/poor wicking/burnt juice doesn't happen, I have alchemists cupboard banana and cream in it, the vapour is like warm cream on the inhale, not much vapour on the exhale but a lovely after taste.


Yes power is power, its just not everything in the equation, you also have to consider what your applying that power too.

As a side note I use Panasonic based 3400mah cells in my vamo, I do use other mods alongside it, I like tanks and I like different flavours so as I saud elsewhere, I like to havr a few mods on hand, I get about four days out of one cell in my usage.

Ah, I get it now. It's like modding an engine by 'porting' it (2 stroke) or polishing manifolds, etc to increase the airflow to burn all that extra fuel... More power.
I'm currently Vaping on a month old cheap dct cartotank (don't laugh) that's still ok, I guess., whilst I wait for another one and a Pulse G clone to arrive after the Chinese new year.. I've got my evod as backup, btw.
So those charts are for 'stock' configurations or devices, I take it?
Thanks for explaining!
 
Ah, I get it now. It's like modding an engine by 'porting' it (2 stroke) or polishing manifolds, etc to increase the airflow to burn all that extra fuel... More power.
I'm currently Vaping on a month old cheap dct cartotank (don't laugh) that's still ok, I guess., whilst I wait for another one and a Pulse G clone to arrive after the Chinese new year.. I've got my evod as backup, btw.
So those charts are for 'stock' configurations or devices, I take it?
Thanks for explaining!

Depends how far you go. To me, 10 amps are porting, 30 amps is taking out a 1.0l fiat punto engine, and putting a 7.2l V8 in it's place...
Then quad coiling and using a fair amount of those 30 amps of loveliness, is adding a twin turbo kit to that already mental v8.
The more you push, the more dangerous it is, BUT, the bigger the results.
The jump from 1.8 to 1.6 is hardly noticeable... The jump from 0.5 to 0.3... Is.

Those charts, to me anyway, are a load of b*llocks now anyway... most dual coil tanks CAN take up to 15 watts... Whether or not you like the heat, is a different story. BUT, it's all dependent on the person.
I'm quite happy vaping 12mg juice in the quad coil (Even though I mix up at 4mg...).. But to others, they find the combination of a lump hammer being hit into your throat, as well as having a flaming petrol bomb poured into your throat a bit too much (Pussys) ;)
 
As Raguri says, part of it is Down to the user. Some people just don't like high wattage (either vw or sub ohm) vaping. Othees do, its important to their experience, your engine analogy is a good one, I would refine it further by pointing out, you could build a 1700 cross flow on twin webbers, 3500 - 7500 rpm cam, lightened and balanced flywheel, optronic ignition, you'd have a mk1 escort that handles well and is huge fun on a track but an absolute bitch on the road, or you could put in a throttle body powered zetec, sane power but very smooth and usable day to day, economical even. There's sub ohm vs some of the more insane vw devices now available.
 
As @Raguri says, part of it is Down to the user. Some people just don't like high wattage (either vw or sub ohm) vaping. Othees do, its important to their experience, your engine analogy is a good one, I would refine it further by pointing out, you could build a 1700 cross flow on twin webbers, 3500 - 7500 rpm cam, lightened and balanced flywheel, optronic ignition, you'd have a mk1 escort that handles well and is huge fun on a track but an absolute bitch on the road, or you could put in a throttle body powered zetec, sane power but very smooth and usable day to day, economical even. There's sub ohm vs some of the more insane vw devices now available.

I LIKE YOU!
YOU USE CAR TALK! :D
But yep, my igo w3 is very very impractical when I'm out. But do I still use it? Yes. Why? As it brings a smile to my face :P
 
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