My first Mech Mod

[QueenBeast]

I got my first mech mod last week, its a copper penny 1:1 with a copper tugboat 1:1 and I use Panasonic 18650 2900mAh 3.7v batteries. I had my first coil built at the shop and it was 0.7 ohms and was a decent hit. I decided to try my hand at building and my first coil came in at 0.4 ohms and is a really nice hit for a single coil. So, I decided to try to go to double coils with the same wrap and it came in at 0.1 ohms. Awesome warm moist flavor but the mech mod was getting hot so I took out the second coil and left it at a single coil at 0.4 ohms. I was using Royal 24g wire on 1/8" bit at 6 wraps for both coils.
I am not interested in vaping the mech mod on a reg basis, I only bought the mech mod for tasting as I am into making juices.
Any words of advice?

 

[scottkh]

at .1 you are pulling way to many amps for that battery your lucky you didnt vent a battery

 

[QueenBeast]

at .1 you are pulling way to many amps for that battery your lucky you didnt vent a battery

yeah that is why as soon as it started to get hot I stopped.

 

[Bigflyrodder]

OP, that battery you are using is nowhere near rated for how you are using it. You are in serious danger of having that bettery vent on you.

PLEASE, PLEASE, PLEASE, PLEASE, GET FAMILIAR WITH OHMS LAW AND BETTERY SAFETY BEFORE YOU HURT YOURSELF

 

[scottkh]

yeah that is why as soon as it started to get hot I stopped.

Get some sony vtc4 batts can comfortably go down to .2 with a decent margin for error

 

[pwheeler]

Please do your calculations first to see how many amps you're going to pull before firing it! You are way over what that battery will do. You're lucky you didn't have some serious damage done to your mod, your battery and most importantly, yourself! Please be safe and do your research first.

 

[Miata GT]

Advise? This is nothing personal but a prime example of how people get into using mech mods with no discipline or respect for the danger involved.

What would have happened if you didn't feel the heat at 0.1ohms? Would you have tried even lower?

 

[QueenBeast]

Wow, thanks guys. The shop where I got it all said that the batteries that I got were top of the line for mech mods and sub ohming. I need to investigate this further.

 

[Kalaniboi81]

Yeah if your initial build came in at .4 ohms then by using the same build but as a dual should have put you at around .2 or the high .1 range like .18 - .19. If this is the case then your only pulling around 20 - 23 amps. The issue lies in your battery. I ran a search using the specs you gave and i came up with a Panasonic NCR18650PF 2900mah 3.6V with a 10 amp max. This means with these batteries you can safely only go as low as .36 ohms which puts you right at 10 amps. Do i suggest running it at its max no, but it can put i t out. Look into getting better batteries is my suggestion VAPE ON!

 

[QueenBeast]

Thanks I got to looking at my batteries and I have the Panasonics and I have the eFest 2500mAh 35A (from what I have read are supposed to be the same as the Sony Vtc4) so I will not put any of the Panasonics back into the mech mod and I will make sure that I do not go below 0.4 ohms anymore.

 

[Bigflyrodder]

You can use the Panasonic batteries no problem, just follow Ohms law and stay safe. I'd suggest staying at .5ohm or higher with those.

The eFest purples are good batteries but the 35amp rating is misleading, that is a peak rating rather than continuous. I believe they are rated at 20amps continuous so use that when checking safety with Ohms law.

Download an Ohms Law app right away, can get them for iOS, Android, Windows, etc. so there is no reason not to have one handy!

 

[Kalaniboi81]

Thanks I got to looking at my batteries and I have the Panasonics and I have the eFest 2500mAh 35A (from what I have read are supposed to be the same as the Sony Vtc4) so I will not put any of the Panasonics back into the mech mod and I will make sure that I do not go below 0.4 ohms anymore.

Well it's not that you can't go below .4 ohms. It's all dependent on what your battery can handle safely. Always know your hardware inside and out. I'm not bashing your shop, but there are shops out there that sell anything and say it's the best for cloud chasing, but in reality they have no idea what danger they are putting people in by not giving them detailed info on their products capabilities. If your ever in doubt google ohms law calculator and always check the amps your pulling. Sony's are the best in my book, but due to some recent activity it's been hard to find real ones out there. Efest are decent as well but just do some research to find what you need VAPE ON!

 

[Skunk!]

I wouldn't go that low on a vtc4 either...

 

[QueenBeast]

FYI, I am not wanting to go below 0.5 ohms on any of my builds. I am just learning how to build and this was my first build.

 

[QueenBeast]

Skunk, thanks for the info about the calculator, I am downloading it now. I am attending a coil building class this weekend and I will definitely be learning from my mistakes thus far and so proud that I didn't blow myself up.

 

[edyle]

FYI, I am not wanting to go below 0.5 ohms on any of my builds. I am just learning how to build and this was my first build.

Instead of going extreme and finding out the hard way, I'd suggest you stay off the 24 gauge and get what most people seem to use: 28 gauge.
Build a 1 ohm coil; (I think the sweet spot is 1.2 ohms).

If you put 2 one ohm coils in a dual coil that would work out to 0.5 ohm combined.

 

[QueenBeast]

Instead of going extreme and finding out the hard way, I'd suggest you stay off the 24 gauge and get what most people seem to use: 28 gauge.
Build a 1 ohm coil; (I think the sweet spot is 1.2 ohms).

If you put 2 one ohm coils in a dual coil that would work out to 0.5 ohm combined.

Thanks I will do that. I just got what the guy that built my first coil used and tried to make mine like is, but epic fail. I am sure that I will learn a whole lot in the coil building class that I will be attending Saturday.

 

[Warpigs]

Skunk, thanks for the info about the calculator, I am downloading it now. I am attending a coil building class this weekend and I will definitely be learning from my mistakes thus far and so proud that I didn't blow myself up.

Yeah you were playing with danger there. Keep safe

 

[Susan~S]

For an education on mech mods and rebuildables I highly recommend you spend some time with Baditude (our resident battery expert) and visit his blogs. There is a lot to learn regarding using both safely. Blog link is here. The blogs regarding mods and rebuildables are listed below:

BATTERIES

9. Battery Basics for Mods: IMR or Protected ICR?
* Another essential read to understand which batteries are safe to use in mechanical and regulated mods. Includes a frequently updated list of recommended safe-chemistry, high-drain batteries with their specifications.

11. Deeper Understanding of Mod Batteries Part 1
* For those who want to learn the differences between IMR, IMR/hybrid, and ICR batteries. What do those numbers and letters on batteries mean? What's an amp rating?

12. Deeper Understanding of Mod Batteries Part 2
* Protected vs unprotected batteries - what's the difference? Ohm's Law 101. What is an AW battery? What is an inline fuse? What is stacking batteries?

17. Purple Efest Batteries Not As Advertised
* A cautionary blog that reveals that the purple Efest batteries may not have the specifications advertised. Also includes a commentary on "continuous discharge ratings" vs "pulse discharge ratings" of battery specs.

OHM'S LAW

14. Ohm's Law for Dummies (Vapers)
* My attempt at explaining Ohm's Law in layman terms and how it relates to vaping.

16. Explain it to the Dumb Noob: Ohm's Law Calculations
* As simple as it is to use, some people have a tough time grasping the concept. Warning: Includes graphic photos of mod explosions.

MECHANICAL MODS & REBUILDABLES

7. Information Resources for Your First RBA
* An essential read and referrance guide for someone new to rebuilding coils. Includes a multitude of useful links on battery safety, mod safety, coil meters, coil building, and the differences in the three types of RBA's.

15. Inexpensive Mechanical Mod and RDA Setup
* A response to the frequently asked question on how to get into rebuildable atomizers with a mechanical mod inexpensively. Includes a list of commonly used tools and supplies for rebuilding and where to find them.

BATTERIES - WHERE TO BUY

How to Spot Fake Sony Batteries


Only buy batteries from a reputable supplier (not ebay or Amazon) as there are many counterfeit batteries being sold. Here are several reputable battery suppliers in the US.

* RTD Vapor
* Illumination Supply
* Lighthound
* Orbtronics

 

[scottkh]

Thanks I got to looking at my batteries and I have the Panasonics and I have the eFest 2500mAh 35A (from what I have read are supposed to be the same as the Sony Vtc4) so I will not put any of the Panasonics back into the mech mod and I will make sure that I do not go below 0.4 ohms anymore.

The efest is not the same as a vtc4. If i am not mistaken the efest is 35A max pulse 20A cont. The 20A rating is the important one