Need help rebuilding Kanger Protank coil..

[WantedMan2CleanHouse]

Ive started rebuilding my protank..I use a Vamp V3 so i like to have a higher resistance..Ive been sitting here all morning trying to figure this out..Ive been using 32 gauge wire and organic cotton for the wick..Now the issue no matter how many wraps i do i cant get the resistance above 1.4..4 wraps 1.1, 5 wraps 1.4, and 7 wraps i just got 1.4..Does anyone know what im doing wrong? Thank you any help is greatly appreciated..

 

[Electraglide1]

I'm using 32 gauge kanthan as well & mine run 1.6 to 1.9 with 4 or 6 wraps. Try making them larger. Look at VapirLadys YouTube video where she places a pin inside the wick. Maybe you can use a drill bit or toothpick? I'm using 2.5 silica and next I need to try 3mm.

 

[Jazzi Mike]

You may want to get 34 gauge next time for higher resistances, but with 5-7 wraps, you should be at least getting in the 2 ohm range. How long is your piece of resistance wire? 32 gauge resistance is 13.1 Ohms per foot. With 2 inches in your Protank, you should get around 2.1 ohms

 

[Bill's Magic Vapor]

I use a 6/7 wrap Kanthal 32 and consistently get a 2.0 - 2.2 Ohm coil. Your coils may be too tight. Wrap around a toothpick, or paperclip and use at least 2mm wick.

 

[rasmith1959]

Ive started rebuilding my protank..I use a Vamp V3 so i like to have a higher resistance..Ive been sitting here all morning trying to figure this out..Ive been using 32 gauge wire and organic cotton for the wick..Now the issue no matter how many wraps i do i cant get the resistance above 1.4..4 wraps 1.1, 5 wraps 1.4, and 7 wraps i just got 1.4..Does anyone know what im doing wrong? Thank you any help is greatly appreciated..

The 7 wraps should have gotten you closer to your desired resistance. One thing you need to make sure of is that none of the wraps are touching each other or it will create a short and lower the resistance. Electricity always follows the path of least resistance.

Sent from my Galaxy Nexus using Tapatalk 4

 

[SonHouse]

The only way the resistance can be the same is if the current is traveling through the same amount of material. So, are you making the same size loops? Is the wire touching on two of the loops allowing the current to skip that loop? Those are the most usual issues.

 

[HDVaper]

If you can get 'em to look like THIS you're on the right track.

 

[SilverZero]

I use a 6/7 wrap Kanthal 32 and consistently get a 2.0 - 2.2 Ohm coil. Your coils may be too tight. Wrap around a toothpick, or paperclip and use at least 2mm wick.

I just did my first recoil this morning using 3mm silica wick and 32ga Kanthal. I ended up using a 4/5 wrap and got exactly 1.8 ohms.

I was going to guess that the Kanthal was wound too tight as well, see if you can wrap it a little looser or add more wick.

 

[release the kraken]

You may want to get 34 gauge next time for higher resistances, but with 5-7 wraps, you should be at least getting in the 2 ohm range. How long is your piece of resistance wire? 32 gauge resistance is 13.1 Ohms per foot. With 2 inches in your Protank, you should get around 2.1 ohms

@jazzi mike makes a great point about the length. If you take it down to the basics, it doesn't matter how many wraps you have as wraps are not what measures the ohms. Its the lenth of the piece of wire you use that determines the ohms. So if you use the exact same length of wire every time, it doesn't matter if you have 3 coils or a hundred, the ohm reading will be the exact same every time.

 

[SilverZero]

@jazzi mike makes a great point about the length. If you take it down to the basics, it doesn't matter how many wraps you have as wraps are not what measures the ohms. Its the lenth of the piece of wire you use that determines the ohms. So if you use the exact same length of wire every time, it doesn't matter if you have 3 coils or a hundred, the ohm reading will be the exact same every time.

Actually, the more wraps you have the longer you need the wire to be thus increasing resistance. At least that is my understanding.

 

[release the kraken]

The way most have recommended to me here on the forum is to start witih a multimeeter Amazon.com: Equus 3320 Auto-Ranging Digital Multimeter: Automotive (there are many, this is only one example but I like the large reading) then you can measure out the length at the resistence you want. Where the practice practice practice will take place is once you get the correct length of wire, you then have to figure out how big/small to make your coils, and get them to fit your atty space correctly.

 

[release the kraken]

Actually, the more wraps you have the longer you need the wire to be thus increasing resistance. At least that is my understanding.

The wraps are not a constant variable as they can be bigger or smaller, even if you are using a guide like a toothpick or drill bit (which does help with consistency) and especially if its just freehand. The only constant variable you are dealing with is the scientific measurement of the resistance of the wire and is by its length.

For example, see scientific properties here and ohms are measured per foot. Kanthal Wire 32 Gauge RW0097 - 100 FT 0.25oz Series A-1 Resistance AWG I guess without a multimeter you could create a formula to take the desired ohms, and divide the ohms per ft to get a "semi" accurate length to produce your desired ohms. However a multimeter is going to be more accurate.

 

[Moogle]

Use this method Machine screw coil wrap for Vivi Nova / Kanger T3 - YouTube you have to find the right size machine screw but they're really cheap. Buy a beading needle at a craft store and you're set. I use this method with the Protank style rebuilds. Very consistent results. You can dial it in within .5 ohm every time.

Edit: I checked my vape tool box and the machine screw I use is about 3mm from one edge of the threads to the other. I tossed out the bags my screws came in so I don't know the exact size. Pretty tight threads. I used 6 turns to get 2.4 ohms and 5 turns is about 2 ohms. Good luck with the re-build!

 

[SilverZero]

The wraps are not a constant variable as they can be bigger or smaller, even if you are using a guide like a toothpick or drill bit (which does help with consistency) and especially if its just freehand. The only constant variable you are dealing with is the scientific measurement of the resistance of the wire and is by its length.

For example, see scientific properties here and ohms are measured per foot. Kanthal Wire 32 Gauge RW0097 - 100 FT 0.25oz Series A-1 Resistance AWG I guess without a multimeter you could create a formula to take the desired ohms, and divide the ohms per ft to get a "semi" accurate length to produce your desired ohms. However a multimeter is going to be more accurate.

OK, but if you try to wrap 100 coils all the same size for the same device with half of them having 5 wraps and half having 7, on average the coils with 7 wraps are going to have a higher resistance. That's all I was saying.

 

[release the kraken]

OK, but if you try to wrap 100 coils all the same size for the same device with half of them having 5 wraps and half having 7, on average the coils with 7 wraps are going to have a higher resistance. That's all I was saying.

OK, I will just summarize. Coil wraps is not the absolute measurement for measuring the resistance of wire, the length of the wire is what produces the ohm measurement. It doesn't matter if you do 3, 4, 5, 6, or 7 coils with the exact same length wire, the exact same length of wire will scientifically produce the exact same ohm.

If you are using the screw, drill bit, toothpick, straight pin method, yes this does help create more consistency when making coils and you will almost always increase the length of wire if you add another coil as @SilverZero is saying correctly.

I was trying to break it down for the OP to the basic fundamentals so he could understand why his coils, no matter how many wraps he used could keep creating the same ohm reading.

 

[release the kraken]

Here are two posts from another thread that made it all click for me.

Post 1: (By a member named Zipp)
Figure out the resistance you want, cut a piece big enough to give slightly higher resistance (to make up for the part you attach to the posts), and wrap it up. The actual number of coils doesn't really matter. Since every manufacturer's wire is a little different, you'll have to get a feel for the particular wire that you bought.

The reason why I try for more wraps when making microcoils is that they're so small that most of the wick is basically wasted. The more wick your coil is in contact with, the better it'll perform. With regular coils, you can just spread them out a bit to make sure you're not creating small dry/burnt spots in the middle of the wick when you vape.

Post 2: (by a member named fourtytwo)
I find the best way is to use a multimeter. You do have one don't you? If not, get one asap.
Pull out a length of wire and touch the two probes to the wire, an inch or two apart. Look at the ohm reading. Move the probes closer or farther apart until you have the target ohm level you want. That is the length of wire that must be between the terminals in order to have the resistance you are aiming for.

 

[rasmith1959]

Actually, the more wraps you have the longer you need the wire to be thus increasing resistance. At least that is my understanding.

Well it all depends on the diameter of the wraps... if you took a 2" piece of wire you could have 2 big loops, or 7 small loops and the resistance would be the same.