Coil questions.

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dannyrl

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My mvp will read my 0.4 builds, but his patriot came in at 0.0.


I'm not sure if someone has addressed this, but you should invest in a better method of measuring your resistance. I used to use my MVP to check my resistance for my dripper as well, but found that readings under about 0.7 ohms were unreliable. I had a parallel build that would read all over the place on my MVP from 0.4 to 0.9 every time I checked it, and when I bought a dedicated ohms meter, it came out to 0.28 ohms.

I've also had my fair share of the "0.0" reading, this means your resistance is so low that your MVP cannot even check the resistance. The MVP wasn't designed to fire anything lower than maybe 0.9 ohms, so I wouldn't trust it in reading anything lower than that.

Plus, with the MVP only reading out to one decimal point, it will be rounding your resistance. When you get to the super low resistance, a change in the 0.01 range can make a big difference.
 
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MJ12

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I've said my piece, and offered my advice. I went through 10-months of electronics training for Electronic Warfare Systems in the USAF. Although I may have forgotten a lot of what I knew back then, I do remember a few things. Albeit that list gets shorter and shorter the older I get. :unsure:

Regarding the accuracy of my DMM, I measured the resistance of a length of Kanthal last night, don't recall how long it was, and got a reading 3.89Ω. Most of the cheap meters found at Radio Shack, et al, won't read anything less than 2.0Ω. Anything less than that will still show 2.0Ω, which can be misleading, if not dangerous in the context of what we're talking about here.

And that's all I have to say on this subject.
 
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Asbestos4004

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Ok....since I know you're all thinking it but too polite to say it, I'll say it...

Stop saying you've been at this a long time and you know what you're doing if you don't know the difference between .3 and .03. You clearly don't have a clue what you're doing and you should be humble enough to ask for advice instead of making up imaginary friends who don't know what they're doing. Its ok, buddy.... everybody starts somewhere. Accidents happen.
 

Drauder

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The fact that a multimeter reads to 2 decimal places is not indicative of the actual accuracy of that measurement. It's worth reading through the manual to determine the accuracy specifications of the meter when close to it's display limits.

And although I don't want to start an argument, I can't help but wonder at the overall knowledge of "limits" of the OP if there is demonstrated lack of knowledge of a pretty basic concept as significant figures. Perhaps it's just a question of having the DMM in the right scale? I know that many people miss the small K in the corner of the screen...

K for kayfun?
 

GMayberry

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Ok....since I know you're all thinking it but too polite to say it, I'll say it...

Stop saying you've been at this a long time and you know what you're doing if you don't know the difference between .3 and .03. You clearly don't have a clue what you're doing and you should be humble enough to ask for advice instead of making up imaginary friends who don't know what they're doing. Its ok, buddy.... everybody starts somewhere. Accidents happen.

You can reference my thread about my Nemisis that you replied to. I didn't make up friends! hahaha :D
 

Vapocalyptic

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Ok....since I know you're all thinking it but too polite to say it, I'll say it...

Stop saying you've been at this a long time and you know what you're doing if you don't know the difference between .3 and .03. You clearly don't have a clue what you're doing and you should be humble enough to ask for advice instead of making up imaginary friends who don't know what they're doing. Its ok, buddy.... everybody starts somewhere. Accidents happen.
Too bad what I'm thinking about you, would get me banned more than likely. I asked a simple question, which needed a simple answer - no need to be a ..... I know very much what I'm doing with MY equipment, MY batteries, MY builds and MY MULTIMETER. when I was explained the 0.08 build, and shown it, that's what led to the confusion.... And the clarification I sought on that particular matter is just what I needed . I have never ventured under 0.4 ohms until just the day this topic was created BECAUSE I was told about something like this.
 

Vapocalyptic

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gesy2ahe.jpg


My made up friend, using the Hades 26650 I sold him two days ago, with his "0.08" ohm build. I am just trying to understand how that build outperforms my 0.8 build, and using the same battery, just how safe it is. For anybody actually interested in not being a ...., once again the build is a dual micro coil, 5 wrap 22g royal wire
 

Rangertrix

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Yes, .08 and .8 are VERY different. Think of it like change. .08 would be like 8 cents and .8 would be like eighty cents.
Another thing to bear in mind when building that low is that the resistance of your coil is never constant when fired and that a lot of meters can be off as much as .2. With this in mind, always build with a margin of error factored in.
Hope this helps.
 

Asbestos4004

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One must simply read posts 1,3 and 4 to see exactly who we're dealing with here. You can call me whatever you want....after all, you " know your laws and such". You think "you know it all" (post #4). However, the difference between .8 and .08 escapes you. I'd hope our "reviewers" would have a slightly better understanding of how this stuff works. People look to reviewers for guidance sometimes. I hope you study up on this stuff a little bit for your own safety and enjoyment with vaping. Armed with a little basic knowledge , sub ohm vaping is quite safe and fun.

By the way, where can I find one of these 3/34 drill bits? I've looked everywhere.....
 

TheJakeBailey

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gesy2ahe.jpg


My made up friend, using the Hades 26650 I sold him two days ago, with his "0.08" ohm build. I am just trying to understand how that build outperforms my 0.8 build, and using the same battery, just how safe it is. For anybody actually interested in not being a ...., once again the build is a dual micro coil, 5 wrap 22g royal wire

Couple of things. If by "performs"you mean creates a crap ton of vapor, it's pretty simple. It's getting extremely hot, very, very quickly. It may or may not also be related to the dripper he is using as compared to what you are using, the airflow of the dripper, the liquid, etc.

The mod is only part of the equation. It holds the battery that powers the coil, and essentially, that is it. But speaking of mods and batteries. You never mentioned before that this was a 26650, and the amp limits on most 26650 batteries are significantly higher than an 18650. (unless you have a battery adapter sleeve and are using an 18650 in it.) That still doesn't mean that a .08 build is safe at all. Let that be very clearly stated. But if you are asking for advice, accurate details will get you more if it, and better.

With all due respect, and I'm saying this with your best interest in mind. I don't think that you know as much as you think you know. (If you did, you wouldn't be asking the difference between .8 and .08. you would already know) And for the record, neither do I. But I'm constantly trying to learn more, and do what I do in a relatively safe manner. Don't let this thread discourage you from asking questions. But slow down, stop worrying about who has the bigger...cloud, and start with some basics.
 

Vapocalyptic

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Exactly. I'm trying to LEARN MORE. I have continously stated that I have knowledge doing the builds I DO know. I understand that it is far and wide; however, take guitar for instance... I can play well, but I don't know a lot of styles.. Probably a bad analogy, point being, I came here to learn about a new build and method, outside of what I do know. As a "reviewer" I review what I Know and use. I drip, but I have never built that low... I came here exactly for advice and guidance. I was jumped on like I'm some newbie, which is kinda crappy of the community as a whole. Yes I may be asking questions that are touchy to some due to safety, but would you rather I built (and worse, advised my readers) to build this low because it's cool?

I get the difference now. But man, I'm just depressed at some reactions from my fellow vapors. =/
 

Vapocalyptic

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All in all it was a really simple question that needed a simple answer. Didn't have to get so out of hand; my math was terrible, and my understanding even worse. Does not mean I don't know how to build, practice safety, or enjoy. I am progressing further into sub ohm territory out of my comfort zone (0.5-0.8) experimenting with tons of different builds wires and all the RDA's I could want. I guess I made myself look a bit foolish but it was a matter of confusing pertaining to a build, not vaping or subohm as a whole.

Thanks to the people who provided clarification and weren't elitist jerks, the majority of you can learn from these type of people - keep this community free of judgment- or else we will loose it! That's all, let the topic die.
 

Jack NMI Stecker

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... Then his coil build at .08 is substainally lower than one built at 0.8?
Yes .08 is in the unsafe area by a big margin. .14 at 4.2 volts would be right at 30 amps. at .08 ohms it would be 52 amps.
Think this may be of some help:Ohm's law | Steam Engine | free vaping calculators
folks doing rebuilding and especially sub ohm really need to know ohms law and battery safety. Or you might have a bad day.
 

Asbestos4004

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You're right, guitar is a bad analogy. Nobody ever injured themselves or others by trying to play the lead to Stairway to Heaven without proper knowledge and understanding the Pentatonic Scale. Nor did they arm the people trying to ban guitar playing with more tragic stories.
Asking questions is one thing, but asking questions like THAT while trying to paint yourself as someone who knows ohms law and understands all the safety aspects of sub ohm vaping is completely different. It happens all the time on here.
So, please accept my apology for coming across as an a......, but read the posts that I was responding to. Its scary, dude. I can't wrap my mind around the claim that you understand your builds and can do it safely because they're .5 ohms. If you truly understand what .5 ohms is, then you would understand what .05 ohms is. You would understand the humongous difference in amp demand and battery strain between the two.
Just coming out and asking a question gets an answer. Posturing as a know it all pro and asking that question is just asking to be ridiculed.
 

iamthevoice

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I really don't think anyone responding to your questions was trying to be an a.... but rather just concerned that the "accident waiting to happen" actually does. Not only would that be a shame for your friend, but it would be a shame for you as well, having participated by supplying your friend with the tools to hurt himself, without adequately warning him of the danger potential.

That you have done a thing unsafely, even a thousand times, is not knowledge, it's luck!
 

Vapocalyptic

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You're right, guitar is a bad analogy. Nobody ever injured themselves or others by trying to play the lead to Stairway to Heaven without proper knowledge and understanding the Pentatonic Scale. Nor did they arm the people trying to ban guitar playing with more tragic stories.
Asking questions is one thing, but asking questions like THAT while trying to paint yourself as someone who knows ohms law and understands all the safety aspects of sub ohm vaping is completely different. It happens all the time on here.
So, please accept my apology for coming across as an a......, but read the posts that I was responding to. Its scary, dude. I can't wrap my mind around the claim that you understand your builds and can do it safely because they're .5 ohms. If you truly understand what .5 ohms is, then you would understand what .05 ohms is. You would understand the humongous difference in amp demand and battery strain between the two.
Just coming out and asking a question gets an answer. Posturing as a know it all pro and asking that question is just asking to be ridiculed.
But if youd read what I said you'd realize I didnt understand the difference in the decimal point and relation to the battery. This is largely due to me building within the acceptable range and as a user pointed out I usually use an mvp to build on. The understanding of the decimal point was the issue and I understood I looked like an ... and I welcomed that. But some attacked me from every angle on the subject...I misunderstood one part of a picture I have a decent grasp on. Lets let this die were all on the Same [emoji106] page now !
 
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