Mechanical question

[CookieMonster225]

Ok guys here's my situation.

I have an hcigar Nemesis clone coming in tomorrow. Went by my local B&M and got an IGO-W and 28g coil. I'll be using organic cotton for wicking and EFest 18650 battery. However, the shop was out of ohm meters so I just had to order and it won't be in till next week. My question is how many wraps would yall suggest starting with. I have no way of reading ohms other than putting the IGO on my VMAX and testing it but it won't read below 1.0ohms I'm sure. Suggestion? I don't want to risk blowing my hand/face off.

 

[TheVapingNinja]

https://docs.google.com/spreadsheet...ZEtmY0pPYzBvdUw2blJHVjdkc1E&usp=sharing#gid=0

 

[TheReign]

https://docs.google.com/spreadsheet...ZEtmY0pPYzBvdUw2blJHVjdkc1E&usp=sharing#gid=0

Love that spreadsheet huh homie Lol

 

[VaPreis]

My suggestion would be to stay above 1Ω until you can properly test it on something other than a Vamo.

Download the coil calculator available on this thread:

http://www.e-cigarette-forum.com/forum/new-members-forum/506159-kanthal-coil-calculator.html

It is a godsend when wrapping a coil and shooting for a specific ohm.

 

[CookieMonster225]

Thanks, that's a big help. I'm planning on doing 4/5 wraps on 1/16 drill bit, it says .9 so does if I do 2 does that make my total 1.8ohm or does it just mean two .9ohm coils? I think I know the answer, but it's a little confusing.

 

[VaPreis]

Thanks, that's a big help. I'm planning on doing 4/5 wraps on 1/16 drill bit, it says .9 so does if I do 2 does that make my total 1.8ohm or does it just mean two .9ohm coils? I think I know the answer, but it's a little confusing.

No. 2 .9Ω coils in parallel will make your resistance .45Ω. BIG difference.

In simple terms, with dual coils, your resistance will be 1/2 of the resistance of your lowest resistance coil. In other words, if you wanted a 1Ω dual coil configuration, you would need to build 2 coils that each had an individual resistance of 2Ω each.

 

[CookieMonster225]

Ok 2 more questions:
The guy at the shop said make sure the wraps aren't touching, but in a bunch of the pics I see the coils touch. What's up with that?

Also, is it safe to just do one coil and not have anything connected to the third post?

 

[Funk Dracula]

Thanks, that's a big help. I'm planning on doing 4/5 wraps on 1/16 drill bit, it says .9 so does if I do 2 does that make my total 1.8ohm or does it just mean two .9ohm coils? I think I know the answer, but it's a little confusing.

No! Please stop and take a second to read up on some things....

Two coils is HALF the resistance of the combined coils. Two .9Ω coils is a .45Ω coil. Your pulling 9.3 Amps of current from your eFest battery.

What kind of eFest is it? All of them, except for the new "purple" ones are rated at 10 Amps. Your going to make that Nemesis "hot" as hell. Your battery probably won't blow up in your face, but at the very least you are killing it, aka "mis-using it."

Also, without being to properly meter your built coil, you have no real warning if a short exists. If you can't meter it out on your VMAX, and at the very least make sure a short doesn't exist, YOU NEED TO STOP AND WAIT FOR A METER THAT CAN.

Give me a second to find some links to some reading for you... You'll be okay, just please read up on some very basic things before you mis-use your well spent money on your new vape gear, k?

be back in a few...

 

[twgbonehead]

Ok 2 more questions:
The guy at the shop said make sure the wraps aren't touching, but in a bunch of the pics I see the coils touch. What's up with that?

Also, is it safe to just do one coil and not have anything connected to the third post?

It is fine to do one coil. You don't need to start with 2.

The coils can either completely touch (microcoil) or be completely separate (like a spring). It's all or nothing. If you have a loose-wound "spring" coil but two of the loops touch the coil will heat up unevenly.

 

[^Top-Shelf^]

Run down to Harbor Freight and grab one of these multimeters. If running a mechanical and rebuilding you should own one anyway. Even if you just use it to check your batteries.
http://t.harborfreight.com/7-function-multimeter-98025.html

 

[CookieMonster225]

No! Please stop and take a second to read up on some things....



What kind of eFest is it? All of them, except for the new "purple" ones are rated at 10 Amps.

Efest 1600mAh IMR 18650 3.7V LI-MN also says V1

I'm not actually doing this as we speak. I'm going to make sure my ZMAX reads before I go and try it on the neme. If it's sub ohm I'll just add more wraps until I get my meter in. That's why I'm asking all these questions, I know it's dangerous so taking precautions.

 

[^Top-Shelf^]

Ok 2 more questions:
The guy at the shop said make sure the wraps aren't touching, but in a bunch of the pics I see the coils touch. What's up with that?

Also, is it safe to just do one coil and not have anything connected to the third post?

This guy sounds like he is not very knowledgeable, I'm not sure I would take a lot of advice from him. This is how micro coils are made, perfectly safe to have all the coils touching each other.

Also I wouldn't suggest going below a .6 ohm coil with that battery, probly better to stay .8 and up until you get a higher amp batt. And more experience. Read read and read some more! Once again pick up a mutimeter

I retract my statement about the battery, I was thinking it was only a 10 amp

 

[TheVapingNinja]

please do not use the nemesis until you have dedicated at least 3 full days to reading the forums in regards to mechanical mods

 

[Funk Dracula]

Efest 1600mAh IMR 18650 3.7V LI-MN also says V1

Excellent, I believe the only efest's that are 1600mAh are the newer 30A ones. I was mistaken thinking the only new efests that are high discharge are purple, those are the 2000mAh. You 1600mAh appear to be 30A. You are good to go in the battery department.

I'm not actually doing this as we speak. I'm going to make sure my ZMAX reads before I go and try it on the neme. If it's sub ohm I'll just add more wraps until I get my meter in. That's why I'm asking all these questions, I know it's dangerous so taking precautions.

Good to hear. Like I said you'll be fine, it's easy. There's just some real basic stuff to know and practice to protect yourself, and your gear.

Here is a good resource thread. It contains many links around and outside of ECF that can answer a lot of questions you may have.

http://www.e-cigarette-forum.com/fo...op-reference-shop-new-experienced-vapers.html


Also, you probably know that youtube contains a wealth of information. Here is a video I like to link for "quick, down and dirty" micro coils made by the micro coil OG himself, Super_X_Drifter:



The build is for an RM2 atomizer, but it applies to all RDA's essentially.

Good luck, be safe, and enjoy new set-up, sir.

edit: And if your Zmax meter ain't reading it, don't fire it! Get that rectified asap, K?

 

[CookieMonster225]

please do not use the nemesis until you have dedicated at least 3 full days to reading the forums in regards to mechanical mods

I have been reading for a few weeks now. Most of this is to ensure safety. I was planning on watching some more youtube videos before the build. And thanks for all the info guys. Much appreciated.

 

[Lexx]

Run down to Harbor Freight and grab one of these multimeters. If running a mechanical and rebuilding you should own one anyway. Even if you just use it to check your batteries.
http://t.harborfreight.com/7-function-multimeter-98025.html

This.

Grab yourself a multimeter, they are so useful, I use mine daily. No toolbox should be without one!

 

[CookieMonster225]

Ok I didn't have much time to mess with it this weekend, but when I did I did a 4/5 wrap, dual coil. Reading .68ohms and I'm getting a really harsh hit with not much vapor. Do I need to drill my air holes out?

 

[barabus]

I rarely use an ohm meter, if you give us the diameter of wick you'll be wrapping around and desired ohm level we can guess for you but it seems like the guess work has been eliminated because of the attached spreadsheets. I vape at 1.3 unless DC and since I vape steady I just go with what feels right and I stay in that area.

 

[Ryedan]

Ok I didn't have much time to mess with it this weekend, but when I did I did a 4/5 wrap, dual coil. Reading .68ohms and I'm getting a really harsh hit with not much vapor. Do I need to drill my air holes out?

What size are the air holes now? Are the air holes lined up with the coils?

 

[CookieMonster225]

What size are the air holes now? Are the air holes lined up with the coils?

I'm not sure. Don't have it with me but I'm using an IGO-W. The air holes are pretty small and there's only 2. My buddy has the same one and drilled a 5/64 hole; he said it helped.