What happens if I attach 2 coils to the same posts?
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For some reason this made me laugh weirdly hard.
.4ohms, well within the danger zone if you don't know what you're doing, please be careful.
I'm curious about why this is so. It would seem logical to me that two lengths of wire would double the ohms, not cut them in half. Can anyone explain the science behind it to a layman like myself?
resistance stops flow of electricity, so picture one tiny hose, only so much flow, now picture 2 hoses side by side, twice the flow, half the resistance... 2 coils = half the resistance, 3 would only be 1/3rd the resistance and so on
now if they were in series, one after the other in a straight line then each one would add resistance so 2 in series would be double resistance
now if they were in series, one after the other in a straight line then each one would add resistance so 2 in series would be double resistance
I think the guy above me just did. It really isn't "common sense" - you do have to know what you're up to.
Luckily there are many, many threads on this very subject on this site.
Enjoy!
I use the straw analogy for parallel resistance...
Drink a milkshake through 1 straw, difficult....high resistance. Now add another straw. 2 straws means you have doubled the path for current, the milkshake, to flow. 2 straws is easier than one straw, effectively half the resistance.
Drink a milkshake through 1 straw, difficult....high resistance. Now add another straw. 2 straws means you have doubled the path for current, the milkshake, to flow. 2 straws is easier than one straw, effectively half the resistance.
Yes, very good analogy. And if the two straws were connected then, you'd have to suck it twice the distance, so twice the resistance, right?
But then there is the adverse: the gender analogy. Date two women/men in series and, if you play it right, low resistance. Suggest a parallel, resistance may raise, and cat fight/knife fight/gun fight may ensue. Be careful with multiple encoiling.
You mean suggest a series relationship, right? There will be more resistance to that.
I've done 2 coils on 2 posts before, it definitely works. Just make sure they are the same resistance and that your battery can handle the increased amp load from the halved resistance. 2 coils on 3 posts is easier to set up. 4 coils on 3 posts is just nuts, lowers the resistance to 1/4 of each.
Maybe a underlying question here is how can I wrap coils in series? I have a 3 post igo-w, would I attach two coils on the same side?
This is easier explained with pictures... I made up a couple of very simple circuit diagrams that represent a bottom button mechanical coupled with an IGO-W
Diagram 1:
This diagram shows two coils in parallel on an IGO-W. POST 1, as you probably know, goes to the positive side of the battery. POST 2 and POST 3 both go to the negative side. So with 2 coils in parallel, you can simply connect the positive leg of both coils to POST 1, and connect the negative leads, one each, to POST 2 and POST 3. Because both POST 2 and POST 3 are connected to the negative side of the battery, technically speaking you could attach both negative legs to the same post, just like you connect both positive leads to the same post.
Diagram 2:
This diagram shows two coils in series on an IGO-W. In series, the coils are wired in line with each other. So you would attach the positive leg of COIL R1 to POST 1. Then you would attach the positive leg from COIL R2 to the negative leg of COIL R1. Finally you attach the negative leg from COIL R2 to either of the negative posts, in this diagram it is connected to POST 2.
I haven't seen anyone use multiple coils in series. Doesn't mean it doesn't happen, or that nobody has tried... That's just my personal observation.
Using some of the real world analogies from the above posts should better explain the electrical flow in these circuits, and how two resistors (coils) in parallel affect the circuit differently than two resistors in series.
If you have any more questions, just ask!
2 coils in series is the same as one twice as long coil... there would be little advantage to the "pause" where they join were you to separate one long coil into 2 by bending it in the middle but sometimes this is an advantage for wicking so it is done sometimes... just realize that 2 coils in series is the same as one long coil with a pause or non coil section in the middle
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