Glassmanoak's contest #27 with multiple winners and for winners!!
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4
Thanks for the bump, LD.. wish I had used it.
OK, boardopboy has a question.
Lots of talk in The Treehouse recently about twisted wire. My question is... How does twisting affect the resistance?
Two inches of 32g K-a1 would give about 2.2 ohms, so would two inches of the same wire in a double twist give 4.4? 1.1?
You can try to use maths to explain it, but I'll likely be lost.
Thanks for the bump, LD.. wish I had used it.
OK, boardopboy has a question.
Lots of talk in The Treehouse recently about twisted wire. My question is... How does twisting affect the resistance?
Two inches of 32g K-a1 would give about 2.2 ohms, so would two inches of the same wire in a double twist give 4.4? 1.1?
You can try to use maths to explain it, but I'll likely be lost.
#3 Hello to you too my friend!
#3 OMG Hurry Doc, I'm turning blueAnd hey there Vwls! Nice to see you here. I always enjoy looking at your pretty vaping things.
4.
First, I will state two things. 1) Electrons travel on the outside surface of the wire, not through the center. 2) A common mistake, that's not worth correcting anywhere is mixing the terms Resistance and Impedance.
Impedance, of course, means to impede flow, which is similar to resistance, but it is not always the term to use.
Now, knowing that electrons travel on the outside surface of the wires, it stands that thicker wire has more surface area for electrons to flow, thus less impedance (or resistance, if you like)
In the use of coil building, twisted wire will have double the surface area, and thus, half the resistance. So 1 inch of 28ga is rated at an impedance of 0.7 ohms, two twisted together will have half of that, or 0.35 ohms of resistance per inch. That's inch of wire, and twisting them actually shortens the wire, so 1 inch of twisted wire can vary quite a bit depending on how many twists there are... If you shorten the length by half when twisting it, the end result will have 2 inches of wire (x2) of kanthal per inch, leaving a net of... 0.7 ohms per inch, BUT, now the pipeline is much more freeflowing.
When you wrap coils.. if you were to wrap two coils on a single piece of wire, the resulting impedance would be whatever the length of wire is, because the electrons are traveling the length from one end to the other. If you do dual (or quad.. whatever) on two separate posts, the electrons will split off and have two paths, effectively halving (or quartering)the resistance.
I hope that helps with the bigger picture of what's going on...
First, I will state two things. 1) Electrons travel on the outside surface of the wire, not through the center. 2) A common mistake, that's not worth correcting anywhere is mixing the terms Resistance and Impedance.
Impedance, of course, means to impede flow, which is similar to resistance, but it is not always the term to use.
Now, knowing that electrons travel on the outside surface of the wires, it stands that thicker wire has more surface area for electrons to flow, thus less impedance (or resistance, if you like)
In the use of coil building, twisted wire will have double the surface area, and thus, half the resistance. So 1 inch of 28ga is rated at an impedance of 0.7 ohms, two twisted together will have half of that, or 0.35 ohms of resistance per inch. That's inch of wire, and twisting them actually shortens the wire, so 1 inch of twisted wire can vary quite a bit depending on how many twists there are... If you shorten the length by half when twisting it, the end result will have 2 inches of wire (x2) of kanthal per inch, leaving a net of... 0.7 ohms per inch, BUT, now the pipeline is much more freeflowing.
When you wrap coils.. if you were to wrap two coils on a single piece of wire, the resulting impedance would be whatever the length of wire is, because the electrons are traveling the length from one end to the other. If you do dual (or quad.. whatever) on two separate posts, the electrons will split off and have two paths, effectively halving (or quartering)the resistance.
I hope that helps with the bigger picture of what's going on...
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1. Good luck with your job search, Spawn!
Thanks! Just call me Shawn. spawnsharks is a spoonerism of my real name! Yes, spoonerism is a word; go look it up, you will find yourself using it from time to time, and it's a good one to have.
#1 1 inch of rain due tomorrow on top of our gazillion inches of snow sitting on the ground. Need to build an arc
Count me in for the sub-contest
Count me in for the sub-contest
5.
Have a look at the cooking blog I used to keep to get some ideas. All very healthful, delicious and inexpensive. Step by step pictures as well. I have been promoting it again, and if I get more followers, I just might start up again.
Dining With Sparks
#4 I'm trying to figure out what to have for dinner.
Have a look at the cooking blog I used to keep to get some ideas. All very healthful, delicious and inexpensive. Step by step pictures as well. I have been promoting it again, and if I get more followers, I just might start up again.
Dining With Sparks
5
So, Shawn, if I read that right, and I'm not sure I did, it works like a dual coil set up.
Thanks! A wee bit over my head, but it helped!
So, Shawn, if I read that right, and I'm not sure I did, it works like a dual coil set up.
Thanks! A wee bit over my head, but it helped!
Sort of. Think of it as a highway. A 3 lane highway can handle x cars per minute. If you need more flow, you can do two things: Build another 3 lane highway parallel to the original, and half the cars will use it (dual coils in parallel) or you can widen the existing highway by 3 lanes, and all of the cars will use the same path, but it will be able to handle twice the number of cars (twisted).
The actual math for twisted wire gets tricky due to how it shortens on itself, and this won't fit in this analogy.
I guess twisted wire would be like a windy mountain road as opposed to a midwestern highway. As the crow flies, the highway would be 1:1 mile for mile. whereas the mountain road would be 2:1.. 2 miles of road to get 1 mile closer to your destination.
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#4 Doing the "math" on resistance of twisted wire is very tricky, it really does depend on how tight it's twisted. Twisting one pair of the same wire using a drill will give pretty consistent results, anything else is guesswork IMO. I made a few Clapton coils and had no clue what the end result would be, it turned out much lower than I expected.
I use the little nipple from the inside of a carto condom that goes in the mouthpiece/tip. Wow, that sounded totally wrong. I'm not the one that coined these terms, in any case I apologize.
I use the little nipple from the inside of a carto condom that goes in the mouthpiece/tip. Wow, that sounded totally wrong. I'm not the one that coined these terms, in any case I apologize.
Cool, I'll just stuff a condom nipple in the airhole before I put it in my mouth. Classy.
So just built a 1.1 ohm coil, 4ish wraps, using twisted 32g nichrome (don't look at me like that!).
Not a bad result. Nice vapor. Next one I'll do fewer wraps. ,hanks for the insight guys.
The ECF censorbot's head just exploded!
Not a bad result. Nice vapor. Next one I'll do fewer wraps. ,hanks for the insight guys.
I use the little nipple from the inside of a carto condom that goes in the mouthpiece/tip. Wow, that sounded totally wrong. I'm not the one that coined these terms, in any case I apologize.
The ECF censorbot's head just exploded!
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#3. I love gray kitties. I've never had one though. Seems like I always get the black and white ones.
#3
I have been nodding off sitting on the couch watching House of Cards ever since I got home from work. Gonna be an early night, I guess.
I have been nodding off sitting on the couch watching House of Cards ever since I got home from work. Gonna be an early night, I guess.
3: Her kidneys failed and there was nothing we could do. I sang her song "My Buddy" from the commercial to her as she passed. Her name was Buddy and became that after shortly being born. The mother gave birth in our closet to be safe from kids, when I would go inside our bedroom and start talking one kitten would start meowing. After a few times I checked on who was doing it and then asked "Are you my buddy?" The kitten hearing my voice closer but with eyes still closed came crawling towards my voice. So Buddy it became and we enjoyed each other greatly especially if I sung her song.
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