What's the hardest you have ran a Samsung 25r? Less than 0.15 ohms?

[KeyserSoze]

I was at a B+M today and both guys were running RDA/mech setups on 25r's at 0.09 ohms... They do it all the time. Then they started reciting pulse specs. 100A for 1 second, 80A for 2 seconds etc. One dude competes with 0.09 coils and pulses for 8 seconds. I have known these guys for awhile and they aren't bullshitting, they really do it. I've seen the builds. Whether their pulse specs are true, I have not checked yet. I don't normally use pulse specs.

I just want to run at 0.125 for a few drags every now and then. That was my first RDA build (24ga parallel duals) and even after 100 builds I still miss it. I've just been too much of a pussy to go that low since learning that 35A efests are 20A efests. In my defense, I ran that setup for a couple weeks (on an efest) with no issues.

I would feel more comfortable running lower than 0.18 on one of my 25r's than I would on a purple efest. That's all of the batteries I have aside from an old Panny NCR that powers my Atlantis.

Anyone else out there running your 25r's at 32A or more? :zips up flame retardant jump suit:

 

[Slicknic]

My time for pushing the boundaries of mech safety are finished. I'm content with .3 ohm builds these days.

 

[KeyserSoze]

I love my 0.2 builds and 0.3 on my Hobo is great for what it is intended for. But when it comes to rocking the F out, I want 0.12-0.14 on a chuffed mutationX.

 

[scarecrowjenkins]

Rather than push the boundaries of my batteries, i decided to push my own boundaries and learn how to get what i want out of a coil without building insanely low. Not saying everyone needs to run out and buy a drill and a 500ft spool of Nichrome, just saying that's whats been working for me haha

 

[Number3124]

Going that low in a single battery is dumb and people that do it should feel stupid.

Parallel boxes exist for a reason. Leave five amps of head room in each battery. Go ten below what your total amperage is. If your going to use Samsung 25rs use 30 amps as your cap. You can get 0.14 ohms on a pair of parallel batteries.

If you use VTC4s or VTC3s (AKA the only real 30 amp batteries) you can get 50 amps (60 amps total out of the parallel batteries minus 5 amps per battery) and go down to 0.084 safely.

Don't be stupid. Don't do dumb things like try to draw past the C rating of a battery. Those guys are going to blow a hand off one day. Or look like The Dark Knight's version of Two Face some day.

Also, stop buying Efest batteries. Don't support those parasites.

 

[Cloudboss]

Just get a 26650 and do it safely

 

[juicy76]

Just build a squad battery box mod. Now you are good to go. Safety is the key to a SAFE life. Be sure to use vtc 3,4 or 5's like I use

 

[Mr. Pink]

It's hard to find REAL Sony 18650's especially the vtc5.

 

[juicy76]

Lol not for me ... I found 50 of them for 200$ and waight is right for them of 34 grams each (new)

 

[Number3124]

Just build a squad battery box mod. Now you are good to go. Safety is the key to a SAFE life. Be sure to use vtc 3,4 or 5's like I use

VTC5s are 20 amp. 3s and 4s are 30 amp. The VTC5 is basically the Samsung 25R before it was a thing.

 

[juicy76]

Ok got ya

 

[Diescum88]

VTC5s are 20 amp. 3s and 4s are 30 amp. The VTC5 is basically the Samsung 25R before it was a thing.

Where'd you find that info?

 

[juicy76]

Yes now that you mentioned it. I remember the packing on my box saying that my v5's were 30 amps and like 2800 milis

 

[Diescum88]

Yes now that you mentioned it. I remember the packing on my box saying that my v5's were 30 amps and like 2800 milis

Their 2600mah and yeah I've always been told even at shops and everything I've seen on any of the forums is that the vtc5's were 30amp

 

[Number3124]

Their 2600mah and yeah I've always been told even at shops and everything I've seen on any of the forums is that the vtc5's were 30amp

http://vapingunderground.com/thread...c5-samsung-25r-are-confusing-everybody.66515/

Everyone thinks they are because they have the VTC name.

 

[juicy76]

Lol they better be because like I posted i have 50 of them and will flip out on the company I bought them from for putting my life in danger

 

[richardward77]

Lol not for me ... I found 50 of them for 200$ and waight is right for them of 34 grams each (new)

I bought a vtc4 yesterday and after reading your post weighed it and it weighs 45 gram should I be worried.

 

[richardward77]

Ok so I am worried I don't go lower than .4 ohm but I'm used to having the use of both my hands and become quite attached to them so really don't want to be losing one cuz I got ripped off by some shop tryin to make few quid lol.

 

[Mr. Pink]

.4 you should be safe on any of the main brands high amp batteries, but I still say stay away from Sony vtcs just way to many couterfiets. I mainly use LG or Samsung's

 

[richardward77]

Iv got a LG but saw some vtc4 in my local vape shop they assured me that they were genuine and everything else iv had off them has been good quality do all genuine vtc4 weigh 34 gram as new.as iv never heard this before.

 

[KeyserSoze]

Rather than push the boundaries of my batteries, i decided to push my own boundaries and learn how to get what i want out of a coil without building insanely low. Not saying everyone needs to run out and buy a drill and a 500ft spool of Nichrome, just saying that's whats been working for me haha

I'm working on this ~400 ft grip of Kanthal before I try Nichrome but yes a drill is mandatory for me. I've got a lot of 0.2-0.3 builds that are great vapes. They don't create Doppler blips like the previously mentioned parallel 24ga build did though.

Going that low in a single battery is dumb and people that do it should feel stupid.

Parallel boxes exist for a reason. Leave five amps of head room in each battery. Go ten below what your total amperage is. If your going to use Samsung 25rs use 30 amps as your cap. You can get 0.14 ohms on a pair of parallel batteries.

If you use VTC4s or VTC3s (AKA the only real 30 amp batteries) you can get 50 amps (60 amps total out of the parallel batteries minus 5 amps per battery) and go down to 0.084 safely.

Don't be stupid. Don't do dumb things like try to draw past the C rating of a battery. Those guys are going to blow a hand off one day. Or look like The Dark Knight's version of Two Face some day.

Also, stop buying Efest batteries. Don't support those parasites.

Take a slow deep breath. Exhale. Another deep breath. Exhale.

I have a dual 18650 unregulated series box. I can run stupid wattages through it without coming close to taxing a 25r, plus I have a married pair of VTC4's. So I could run around 200W on that (while only pulling 25A per battery). It's huge though (1590B). I have a 1590G box that I need to build but a 55-65 hr work schedule is killing me.

Don't worry, I bought my last efest 5 months ago. Also, don't tell me what to do. Say please.

 

[KeyserSoze]

.4 you should be safe on any of the main brands high amp batteries, but I still say stay away from Sony vtcs just way to many couterfiets. I mainly use LG or Samsung's

The VTC4 thing is a mess. I trust Illumn more than anyone and they say they are back in production.

 

[scarecrowjenkins]

Nichrome changed my life haha. Jacobs-online.biz has a damn fine selection. I've got a couple attys (Derringer & Petri) that don't like big builds, and nichrome lets you build real low without having to use giant wires. What i do sometime is just run nichrome parallel to whatever i'm using. Like clapton/straight N80 or spiral wire/straight N80 and it drops the resistance so you get the heat you want. Plus it turns awesome colors when you dry fire em haha. I try and stay above .18 on a single 18650. Anything lower than that i throw on the box just in case.

 

[Zamazam]

Just get a 26650 and do it safely

That's a big misconception. There are a lot of 26650's out there advertised as 30, 40, 50 amp, but in reality most of them are 20 amp with pulse rates of 40 or 50 amps. The size and Mah of the battery affect the c rating to a point, but not nearly as much as you think. 26650's are still the same chemistry as the 18650's. The safe bet is to use a dual parallel battery mod if you want to go really low. The key of course is to know your batteries limitations and tailor your builds around that fact. I can build a .17 dual parallel coil in my Troll and blast clouds of competition quality with a VTC5. .17 is my lower limit, at some point you fry the juice and just get vapor with little flavor, and that ain't my thang.

 

[KeyserSoze]

Nichrome changed my life haha. Jacobs-online.biz has a damn fine selection. I've got a couple attys (Derringer & Petri) that don't like big builds, and nichrome lets you build real low without having to use giant wires. What i do sometime is just run nichrome parallel to whatever i'm using. Like clapton/straight N80 or spiral wire/straight N80 and it drops the resistance so you get the heat you want. Plus it turns awesome colors when you dry fire em haha. I try and stay above .18 on a single 18650. Anything lower than that i throw on the box just in case.

Yep. I have been staying more like 0.18-0.2 on a single battery. I'm keeping my head far into the sand when it comes to nichrome since I have enough Kanthal right now to build coils for ALL of us. Yes, I needed a 50ft spool of 23ga and a 100 ft spool of 25ga...

That's a big misconception. There are a lot of 26650's out there advertised as 30, 40, 50 amp, but in reality most of them are 20 amp with pulse rates of 40 or 50 amps. The size and Mah of the battery affect the c rating to a point, but not nearly as much as you think. 26650's are still the same chemistry as the 18650's. The safe bet is to use a dual parallel battery mod if you want to go really low.

A well worded response to that post. Props, @Zamazam. AKA the hardest handle I've had to type in a minute. From what little I know, 26650 have higher mAh but also higher internal resistance than 18650. Great for camping trips but not necessarily cloud chasing. If bigger batteries were better... dudes would be rocking single 42120 mods instead of triple 18650 mods.

The key of course is to know your batteries limitations and tailor your builds around that fact. I can build a .17 dual parallel coil in my Troll and blast clouds of competition quality with a VTC5. .17 is my lower limit, at some point you fry the juice and just get vapor with little flavor, and that ain't my thang.

Like this? At some point in the past I started experimenting with "shitty incandescent flashlights with juice dumped on them" instead of "vaping". This is my dual 18650 series box with spaced 26ga 0.44 ohm coils pulsed as fast as possible with one hand whilst the other hand takes a pic.

 

[f1r3b1rd]

Iv got a LG but saw some vtc4 in my local vape shop they assured me that they were genuine and everything else iv had off them has been good quality do all genuine vtc4 weigh 34 gram as new.as iv never heard this before.

I've come to stick with rtd vapor for batteries. I wont even buy from my local shops one of mine got some really crappy counterfeits. even the shops buy from whoever gets them the best deal

 

[juicy76]

Well it being a fake ? Check with a meter for its amps. M personally I would be. If you are not concerned about the appearance of your battery order new skins from eBay/Amazon.... Cut the skin and look to see if all the print is even .if it all even =fake . if off set (I think) on bottom line =original

 

[juicy76]

These things are all also depending on regulated or not... If you using a regulated I would use them .... Unregulated NOT A CHANCE.

 

[Giraut]

Lol not for me ... I found 50 of them for 200$ and waight is right for them of 34 grams each (new)

Won't you be pissed when you realize you bought 50 fake VTC5s

 

[juicy76]

Yes lol... That's why I am going to wait till I get one that don't work properly ... Then cut off sleeve.. I have a regulated segeli 150 and don't trust to use in my mechanical mods

 

[juicy76]

Safety first at all costs

 

[richardward77]

I was really worried about the weight thing and did some research and found out vtc4 should weigh 45g +- 1 so your post stopped me vapin for a day.thanx juicy76.

 

[juicy76]

.

 

[juicy76]

?

 

[Xhalin]

Don't be stupid. Don't do dumb things like try to draw past the C rating of a battery. Those guys are going to blow a hand off one day. Or look like The Dark Knight's version of Two Face some day.

Also, stop buying Efest batteries. Don't support those parasites.

Or THE HOUND

 

[CDZVaper]

Guy at my BnM said he runs his at .07 on a regular basis. Myself, .14 but I didnt like the thought of each pull being my last, so now I stay at .2 or higher. Ive recently been going after more flavor with my builds so no reason for anything lower, imo...

 

[nightshard]

You know those guy for a while you say? I bet you won't know them for much longer


There are no stupid batteries, just stupid people.

 

[Rommel]

Well i just punished my 25r with a 0.08 ohm build and it did okay, better than VTC4s IMO. I don't recommend it, i'm not saying its ok, im just saying that i tried that.

 

[richardward77]

Well i just punished my 25r with a 0.08 ohm build and it did okay, better than VTC4s IMO. I don't recommend it, i'm not saying its ok, im just saying that i tried that.

Brave man.

 

[Rommel]

Brave man.

Not really. Even if the battery decided to vent, i was using my FUhattan i modified for this foolishness known as cloud chasing. I drilled the vent holes in the bottom bigger, and made four new ones in the top where batteries actually vent. The new ones are 3mm each. So my mod actually has more airflow than my RDA And of course, i've done my homework on battery safety. This build is something like ~52-53 amps, safely within the pulsing limits.

 

[richardward77]

Not really. Even if the battery decided to vent, i was using my FUhattan i modified for this foolishness known as cloud chasing. I drilled the vent holes in the bottom bigger, and made four new ones in the top where batteries actually vent. The new ones are 3mm each. So my mod actually has more airflow than my RDA And of course, i've done my homework on battery safety. This build is something like ~52-53 amps, safely within the pulsing limits.

Did it chuck a good cloud.

 

[Rommel]

I only chucked one, my last one ever. I have grown over this. Personally i enjoy my Lemo and gennys more. Been thinking of selling all my drippers, i don't really use them anymore.

 

[richardward77]

I love my drippers when I'm at home. I got a panzer mech and zenith v2 on go at the minute normally build around the .3 ohm mark get good flavour then an pretty decent cloud it's my birthday Saturday and hopefully the missus got me the box mod I want.

 

[Vaping Gray]

if you are using a normal cheap ohm meter just be aware that 90% are inacurate when it comes to low sub ohm levels.
i have 5 ohm readers and all read different, 1 may say as low as 0.13 and another can say 0.22. that can make a big difference. i still dont know if any of mine are accurate so stay on safe side and use the one that says lowest. if it reads too low i add a wrap etc.

 

[Rommel]

if you are using a normal cheap ohm meter just be aware that 90% are inacurate when it comes to low sub ohm levels.
i have 5 ohm readers and all read different, 1 may say as low as 0.13 and another can say 0.22. that can make a big difference. i still dont know if any of mine are accurate so stay on safe side and use the one that says lowest. if it reads too low i add a wrap etc.

Very true. I trust my DNA40's when im trying to measure super sub ohms. My Eleaf meter says 0.1, DNA says 0.08. Eleaf says 0.08, DNA says 0.07.

And the DNAs ohm reader has to be dead on accurate, otherwise the temp control would not work at all.

 

[Vaping Gray]

that sounds logical. my way to double check is set the sigellei 150w to 3 volts, then use ohms law calculator, keep adjusting the resistance, till it reads same watts and volts as the sigellei. that should tell you correct resistance.
all depending on how accurate the sigelie is though i guess..

 

[Pierce1364]

ive done .13 builds on a 25r in a rig no bother and .05 builds on a mxjo in the rig no problem

 

[budd77]

I run a .12 build in my limitless rdta on a limitless mod with a 25r all day everyday. It's an amazing Vape. Batteries don't even get warm.

 

[anen]

I can't check the Ohms. My atty is welded to the tube

 

[gbalkam]

I generally use steamengine to test build coils "on paper" then build the coil and test fire on my Ijoy 200w. Generally, this keeps my coil above 0.1 ohm since that is the lowest the ijoy will fire. Im using samsung inr18650 - 25r (2500mah) battery in my mech. So it handles that build quite easily and I can generally take 3 hits with no problems at all. Mind you, I am taking 2.5 second hits.. not holding the button down and watching the coils make pretty colors.