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Matty Vapes

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Member For 2 Years
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Out of curiousity. I was making coils for the first time yesterday evening and I found it was hard to keep track of the # of wraps. Out of fear I didn't put them in my RDA in case they weren't perfectly matched. Whats the wort that can happen if one coil had say 7 wraps and the other had 8? is it unsafe or?
 

BKTOAD

Silver Contributor
Member For 4 Years
The 7 wrap is gonna heat up substantially quicker.

I dont think it is unsafe (dont know for sure tho) but it will not perform well. Or as well as a matched set.

Count your wraps on the finished coils.
 

DimSumDom

Member For 4 Years
I second guess myself on my wrap count all the time. When I do forgot if I did either the amount of wraps on my other coil, I will space them out and use my tweezers to count the wraps to make sure they have an equal amount of wraps and fix as needed. If you're like me and prefer contact coils, then you can pinch them back together when you dry fire your coils.

Im not sure, but I believe as long as your coil ohms out so it isn't pulling an unsafe amount of amps from your batteries, you should be fine. Its just a small pain if you build for something like a series mod or you vape high wattage, because one wick is going to dry up a bit faster than the other.
 

UncleRJ

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Out of curiousity. I was making coils for the first time yesterday evening and I found it was hard to keep track of the # of wraps. Out of fear I didn't put them in my RDA in case they weren't perfectly matched. Whats the wort that can happen if one coil had say 7 wraps and the other had 8? is it unsafe or?

Not unsafe just not optimal.
 

Matty Vapes

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Member For 2 Years
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thanks for the help guys I will definitely look into picking up a magnifier of some kind.
 

CactusFanaticus

Silver Contributor
Member For 2 Years
Dude, I was looking at the one in that pic you posted, they got good reviews and not that expensive forgot all about them until you posted that pic. I want one for working on complex builds with higher gauges, mine is a shitty monocle lol.
 

HondaDavidson

Gold Contributor
Member For 4 Years
Not unsafe just not optimal.
Safe or not safe depends on the ohm a nd mod..... but in general 1 wrap off shouldn't be dangerous..... just the smaller coil will take most of the load. .... a draw most of the power.

Sent from my SCH-I605 using Tapatalk
 

Alter

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Member For 4 Years
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thanks for the help guys I will definitely look into picking up a magnifier of some kind.
I bought a magnifying lamp from staples. It clamps onto my desk, plugs into the wall, got LED lights and magnifies very well. There is no way I could build coils and set them into attys without it. It was a well spent 40 bucks 3 years ago for the lamp. I'd post a link but its in staples.ca and thats rather useless to you americans.
 
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helmet648

Member For 2 Years
Member For 1 Year
i see a lot of kangertech :) my first mod/tank was a kbox mini with the pain the butt take off the bottom of the tank tank.
 

Alter

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Member For 4 Years
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Take a pic of your coils with your cellphone camera. Once you have the pic you can easily zoom it in to count the wraps.

OMFG...what a idea. Even with a magnifying lamp I have to stress to count wraps and recount several times to still get it wrong.
 

MWorthington

Silver Contributor
Member For 4 Years
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I have to use the picture method myself if I wind more than 7 or 8 wraps. Even with 2.5 power glasses, I can't see the individual wraps. I had thought of trying to get a really strong magnifying glass, but taking a picture is easier, especially if you've got an 8-12 megapixel camera which is pretty common these days even in cheap cameras. Then you can blow the image up to a huge size. :)
 

iVapeDIY

Bronze Contributor
Member For 2 Years
Count your wraps on the finished coils.

OMFG...what a idea. Even with a magnifying lamp I have to stress to count wraps and recount several times to still get it wrong.

For 'identical' DIY coils
  1. Estimate the total wire length required .
  2. Cut wires in batches (10 or more) to the same length (e.g., 100mm each).
  3. Using the same jig to get desired ID, wrap coils striving to have the same 'leg' length.
As long as legs are roughly the same, the number of wraps will be identical or irrelevant. Invariably there will be some variance in leg lengths, but ohm differences will be insignificant. Big differences will be in how much of the legs you trim out in final build. This site helps getting desired wire length (if not already bookmarked) ...

http://www.steam-engine.org/coil.html
 

bobnat

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OMFG...what a idea. Even with a magnifying lamp I have to stress to count wraps and recount several times to still get it wrong.

I get one of my sons to count them. No problems with their eyes.
 

David Wolf

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Out of curiousity. I was making coils for the first time yesterday evening and I found it was hard to keep track of the # of wraps. Out of fear I didn't put them in my RDA in case they weren't perfectly matched. Whats the wort that can happen if one coil had say 7 wraps and the other had 8? is it unsafe or?
Agree with those saying as long as your battery continuous rating can handle your parallel coil resistance it's not a safety issue. Since P=Vsquare/R, and the Voltage is the same to both coils, one will draw 7/8th of half the total power and the other will draw 8/7th of half the total power (excluding lead resistance which will make the differences slightly less). So at 60W one coil would draw ~26W and the other ~34W worst case. I am just now waking up having my morning coffee and haven't run this through equivalent resistance for parallel resistors and other power formulas to double check so don't quote me on this :D
 

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