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  #21  
Old 11-06-2018, 07:15 AM
mickb72 mickb72 is offline
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Read an old Ford 8n forum. Beat into your head from day 1. Negative ground =negative wire to points, positive ground=positive wire to points from coil. Will work either way but that claim is the best. Were positive ground to start with but many have been changed from po error. I won't even get into resistors. I'm left handed too. Mike
  #22  
Old 11-06-2018, 07:28 AM
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ol'George ol'George is offline
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Read an old Ford 8n forum. Beat into your head from day 1. Negative ground =negative wire to points, positive ground=positive wire to points from coil. Will work either way but that claim is the best. Were positive ground to start with but many have been changed from po error. I won't even get into resistors. I'm left handed too. Mike
That made me laugh, thanks
  #23  
Old 11-06-2018, 09:31 AM
green 4 acres green 4 acres is offline
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I suspect you're poking fun but since you asked, I actually know this from physics class. If you think I'm a bore just move on but I find it interesting.

When a wire passes through a magnetic field, electrical charges are forced along the wire as current. The high voltage coil has maybe 2000 times as many windings as the primary coil. The primary winding is energized by the battery like an electromagnet. When the points open, the magnetic field collapses, passing through the secondary coil windings, inducing high voltage across it. The ratio of primary to secondary windings dictates the magnitude of the voltage at the spark plug.

There are two rules that help explain the behavior of transformers, coils, motors, generators, etc. They are both strangely called the "right-hand" rule but they are different.

1: Make a fist and stick your thumb out. Your thumb points in the direction of current in a wire and your fingers wrap around the wire in the direction of the magnetic field around the wire.

2: Point your index finger like a gun in the direction of the magnetic field, your thumb straight up in the direction the wire moves through the field, and your middle finger straight out from your palm in the direction of current flow in the wire.

I could go on but I don't want to get banned.
I hope you are not still teaching , you missed the question entirely , a simple one.
I asked how a coil fires ,what the components are doing to accomplish it , and you go into how why electricity flows
I ve known since I was 17
  #24  
Old 11-06-2018, 07:01 PM
twoton twoton is offline
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.......When a wire passes through a magnetic ........
Good post there Vrobert.
  #25  
Old 11-06-2018, 07:04 PM
twoton twoton is offline
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I hope you are not still teaching .......
Not so good.
  #26  
Old 11-06-2018, 08:55 PM
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I hope you are not still teaching , you missed the question entirely , a simple one.
I asked how a coil fires ,what the components are doing to accomplish it , and you go into how why electricity flows
I ve known since I was 17
Let's have the simple explanation. It may be more useful than my nitty-gritty details but I promise I didn't make this stuff up.
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  #27  
Old 11-07-2018, 08:49 AM
green 4 acres green 4 acres is offline
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Let's have the simple explanation. It may be more useful than my nitty-gritty details but I promise I didn't make this stuff up.
Are you saying you do not know how it works? then
BTW when a wire passes a magnetic field making current is called a alternator
  #28  
Old 11-07-2018, 12:00 PM
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cooperino cooperino is offline
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Are you saying you do not know how it works? then
BTW when a wire passes a magnetic field making current is called a alternator
Mmmmmm.. Almost correct. What your describing is Faraday's Law. Its based on induced EMF. There needs to be a little more happening than your describing such as the conductor need to be spinning within opposing magnets in order to work. EMF is the Electro magnetic force thats created.
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  #29  
Old 11-07-2018, 08:23 PM
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Are you saying you do not know how it works? then
BTW when a wire passes a magnetic field making current is called a alternator
Not to pile on, but an alternator has to alternate polarity. It's in the name.

A collapsing magnetic field will also induce voltage in a wire, similar to a wire passing through a field like what happens in an alternator (or generator).

I'm pretty sure I understand the basics but there are plenty of tutorials on the web so maybe a little self-study is in order.
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  #30  
Old 11-08-2018, 02:03 PM
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Terry C Terry C is offline
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Thought without Jmech it was going to be a paradise of people getting along.
Guess not quite.
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