Stupid question, (ford 9N)

dunno just what I was told, or did they have it backwards and 12 volt had thicker cable.

Did you take HS Physics?

Current (I) is inversely proportional to resistance (R).

Power (Watts/W) = volts (V) X amps (I)

Think of electrical power as a river or stream. The current is the width of the stream, the voltage is how far the stream drops.
 
Did you take HS Physics?

Current (I) is inversely proportional to resistance (R).

Power (Watts/W) = volts (V) X amps (I)

Think of electrical power as a river or stream. The current is the width of the stream, the voltage is how far the stream drops.

Sorry but your analogy doesn't make any sense to me!
Stream current has to do with the speed of water flow not width . . .
and "the stream drops" ??
Drops where, how?
All I can imagine is a waterfall. (?)

There must be a better way of making the understanding of electricity easier for we the electricity-challenged.
 
There must be a better way of making the understanding of electricity easier for we the electricity-challenged.
There is. Buy a basic electricity study manual.
Nobody knows everything. So, no need to shame.
Basic electrical books are very interesting and easy to follow textbooks.
I promise that if you study and read with discipline, you will be grateful for the time invested!
 
Sorry but your analogy doesn't make any sense to me!
Stream current has to do with the speed of water flow not width . . .
and "the stream drops" ??
Drops where, how?
All I can imagine is a waterfall. (?)

There must be a better way of making the understanding of electricity easier for we the electricity-challenged.
Here is the best non-electrical analogy. Use a pipe of water:

Voltage is water pump pressure.
Resistance is pipe diameter.
Amperage is gallons per minute or flow rate.

If pipe sizes are equal it is easy to see that a 12 psi pump will have a higher flow rate than a 6 psi pump. If you want the same flow rate for the two cases than the pipe size will need to be increased for the 6 psi pump. This analogy does not address heat losses when too much amperage is flowing through a conductor but, it helps.
 
Sorry but your analogy doesn't make any sense to me!
Stream current has to do with the speed of water flow not width . . .
and "the stream drops" ??
Drops where, how?
All I can imagine is a waterfall. (?)

There must be a better way of making the understanding of electricity easier for we the electricity-challenged.

Should have resistance is the width of the stream, not the current. Like the pipe analogy above.

A large vertical drop makes more pressure, corresponds to a large voltage.
 
Years ago when there was a brick and mortar Ford tractor dealership in Culpeper VA, I needed a starter motor to replace the original charred starter for my 9N which at this point was 12 volt conversion. The parts man sold me a 6-volt starter which was all that was in stock and recommended using a longer-than-stock cable (starter motor to the starter switch (9N11405B)) so I did and all has been well ever since. It seemed to jump with more authority than the original setup but the changeover was a long while ago and I cannot remember for certain.
 
Here is the best non-electrical analogy. Use a pipe of water:

Voltage is water pump pressure.
Resistance is pipe diameter.
Amperage is gallons per minute or flow rate.

If pipe sizes are equal it is easy to see that a 12 psi pump will have a higher flow rate than a 6 psi pump. If you want the same flow rate for the two cases than the pipe size will need to be increased for the 6 psi pump. This analogy does not address heat losses when too much amperage is flowing through a conductor but, it helps.
THANKS
Btz
and Mad Farmer!
 
Just came on board with this subject. For my two cents, if you installed a 12 volt starter problem solved.
I do think that the problem is the life expectancy of the starter drive.
I agree with Jim, use a 12v starter from a late 50's or early 60's model ford car or truck. it's a 12v and the 12v starters had a shunt winding in them to slow them down. The 6v starter had 2 field windings, the 12v had 3 windings. I usually preferred a 6v starter for my applications so if I had a 12v starter I cut the wire going to the 3rd winding. I also agree that the weak link with using 12v is the starter drive.
 
When in Fairbanks, I had a battery manufacturer (ALASKA BATTERY) make me a "Hybrid Battery" that had 4 posts and could use 6 or 12 Volts. I had a series- parallel switch used in 24V trucks at the time and I could start the 51 Ford on 12v and then it would run and charge @ 6V. Worked at frigid temps.
 
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