Author Topic: Stubblefield coils (bifilar) and speculations (Read 410380 times)

Pirate88179 · « **Reply #150 on:** April 24, 2008, 04:08:22 AM »

@ All:

I was going through my picture file and rediscovered this one. (It was previously posted on the earth battery topic by me) Do those coils on the left not look strangely like the pancake coils we have been talking about? This is from an old patent. I can find the info if everyone thinks it might be important. I would have never made the connection back then, but in view of our current (no pun intended) discussions, and with the additional knowledge I have gained, this stood out to me. What do you all think?

Bill

jeanna · « **Reply #151 on:** April 24, 2008, 04:31:09 AM »

Quote from: Pirate88179 on April 24, 2008, 04:08:22 AM

Do those coils on the left not look strangely like the pancake coils we have been talking about? This is from an old patent.
Bill

Yes, they do.

In patent 512340, Tesla mentions the previous way of making a bifilar pancake coil on which his an improvement. Perhaps this is the one to which he refers??

Nice to read this.

Just getting my hands on this stuff has informed me so much. I never could do anything with this patent before. I will study this. Interesting that they are strung together isn't it?

I am wondering about the way the NS coil bubbles and self destructs if you run battery juice through the primary wires. I was thinking about that when boosting the coil with the external carbon rods on the + and mag block on the - . I wonder about it now.

This is also appears to be hollow - no core piece like Gary's a little.

I wonder if that makes a difference to the bubbling.
EDIT:
I just downloaded the patent and those are sheets of metal made in a spiral. He is basically making probes in the ground and spacing them far apart. So, perhaps it is just a galvanic battery after all. UNLESS sheets in a coil have some special EM effect beyond just being sheets of metal. too bad, maybe

Thank you,

jeanna

resonanceman · « **Reply #152 on:** April 24, 2008, 05:33:45 AM »

Quote from: Pirate88179 on April 24, 2008, 02:52:49 AM

@ Gary:

More ac than dc? Yes, I would like to know more about this. This was while winding? I wonder what might have changed? I look forward to your pictures.

Bill

Bill

I dried my pancake out ...... no wonder I didn't remember any readings .

I get 0 V DC dry ..........008 V AC ......now on my meter .....it reads .007 V AC with nothing attached to the leads .
There may be something strange going on .......I knew there was a short in my original coil somehere .
I kept checking continuity as I wound it because of that . I checked the voltage at the same time .
I remember getting readings of .010 V DC and .025 V AC when I was around half way through .
At the time I thought .......the readings are going up pretty good . it looks like it should have readings similar to my origainal coil .

WHen I got to the part of the copper that had been around the outer part of the coil .........it was a little beat up ......so I wrapped another layer of fiberglass around it ......and then didn't do any more continuity tests .

My pancake is about 12.5 in across the hole in the center is about 3 in

I have spent a couple hours trying different connections

My gut feelings about it is ........ it is a very good ...........something or other.
My gut feeling also tells me that it doesn't like to play alone .

I guess I am going to have to make another one soon .

gary

I tried to add a picture of my pancake

I will add it IF I can get it resized .
This 50 KB thing really sucks

I have spent the last half hour trying to resize it ...... I have been using the program Stefan suggested in another thread . ......I guess it was programed in German .....it makes no sense to me .

At the moment if sounds like a better idea to start my own site rather than waste more time playing silly resizing games

resonanceman · « **Reply #153 on:** April 24, 2008, 05:50:49 AM »

Quote from: Pirate88179 on April 24, 2008, 04:08:22 AM

@ All:

I was going through my picture file and rediscovered this one. (It was previously posted on the earth battery topic by me) Do those coils on the left not look strangely like the pancake coils we have been talking about? This is from an old patent. I can find the info if everyone thinks it might be important. I would have never made the connection back then, but in view of our current (no pun intended) discussions, and with the additional knowledge I have gained, this stood out to me. What do you all think?

Bill

Bill

This looks interesting

my first observation ......... it is wired different than Teslas He connected the end of the A wire with the start of the B ....

I am going to go read the patent

gary

resonanceman · « **Reply #154 on:** April 24, 2008, 06:21:49 AM »

Quote from: resonanceman on April 24, 2008, 05:50:49 AM

Bill

This looks interesting

my first observation ......... it is wired different than Teslas He connected the end of the A wire with the start of the B ....

I am going to go read the patent

gary

Not to much new there .

Except a cheeper way to build a large cell ........and clarifacation on spacing

I had read the 6 ft rule in a couple places ........

This guy says that they should be far apart .......even farther if they are driving a high resistance load .

I remember reading that Stubblfield said that the farther apart the better .

gary

jeanna · « **Reply #155 on:** April 24, 2008, 07:37:47 AM »

Quote

I tried to add a picture of my pancake

I will add it IF I can get it resized .
This 50 KB thing really sucks

I have spent the last half hour trying to resize it ...... I have been using the program Stefan suggested in another thread

Here is Gary's pic:

jeanna

ckreol1 · « **Reply #156 on:** April 24, 2008, 09:16:43 AM »

use faststone image viewer or faststone image resizer: http://www.faststone.org/

resonanceman · « **Reply #157 on:** April 24, 2008, 09:25:26 AM »

Quote from: ckreol1 on April 24, 2008, 09:16:43 AM

use faststone image viewer or faststone image resizer: http://www.faststone.org/

Thanks Ckreol

I will check it out

Thanks for posting the pic for me Jeanna

gary

resonanceman · « **Reply #158 on:** April 24, 2008, 09:48:44 AM »

Quote from: resonanceman on April 24, 2008, 09:25:26 AM

Quote from: ckreol1 on April 24, 2008, 09:16:43 AM
use faststone image viewer or faststone image resizer: http://www.faststone.org/

Ckreol

It works great

thanks

It only took a couple minutes to figure out how to resize a picture

gary

Thanks for posting the pic for me Jeanna

gary

resonanceman · « **Reply #159 on:** April 24, 2008, 01:00:32 PM »

I stayed up and made a small pancake with leftover wire .
The wires are around 5 ft each .

The dry readings are similar to the original .......pretty much 0

I am checking to see how they do together wet .

The first reading was .130 V DC

Reading current seems to help the readings go higher .
I am taking that one step more .
I am using a jumper to short out between the copper and iron .

After being shorted out a little over a half hour the voltage is .650 and going up.
( both coils in parallel )

I used 12 strands of rebar tye wire for the iron
The first time I sanded the black off the wire .......not real fun.
This time I just used it as is .......... it was just a little oily ........ but it seems ti be working ok

gary

Pirate88179 · « **Reply #160 on:** April 24, 2008, 04:53:04 PM »

@ Gary:

Nice coils. About the rebar tie wire, did you test it with a magnet? I almost used that but when I was in the home building supply store, my magnet (neo) had very little attraction to it. (Not much iron in it) I found some fence wire that it was hard to pull my magnet off of so I used it instead. I am not a chemist but I figure if it is strong on a magnet, must be a lot of iron content. Same with the rebar I almost used for my core, very little attraction. So I used the galvanized (zinc coated) spikes which were also strong magnet pull. I am sure all of these products vary from supplier to supplier and place to place. Just a thought for you.

Bill

jeanna · « **Reply #161 on:** April 24, 2008, 06:50:26 PM »

Gary,

What happens when you hook it up the way Tesla invented. He said it was a great improvement over the previous way.

Make the inside copper wire longer enough to attach to the outside iron wire. Then I guess you will be left with just 1 pair of leads.(makes things easier for me

).

Tesla said what he was improving was the self dampening (I chose that word) effect of the pancake coil. I am assuming there is a similar dampening with this bifilar pancake.

I promise to wind my own

, but I would love to know the difference sooner.

jeanna

resonanceman · « **Reply #162 on:** April 24, 2008, 07:02:46 PM »

Quote from: Pirate88179 on April 24, 2008, 04:53:04 PM

@ Gary:

Nice coils. About the rebar tie wire, did you test it with a magnet? I almost used that but when I was in the home building supply store, my magnet (neo) had very little attraction to it. (Not much iron in it) I found some fence wire that it was hard to pull my magnet off of so I used it instead. I am not a chemist but I figure if it is strong on a magnet, must be a lot of iron content. Same with the rebar I almost used for my core, very little attraction. So I used the galvanized (zinc coated) spikes which were also strong magnet pull. I am sure all of these products vary from supplier to supplier and place to place. Just a thought for you.

Bill

Bill

I just checked my rebar tie wire ...... my neo's stick pretty good . good enough that I could not pull them off with slightly sweaty fingers

Has anyone else been shorting out their coils for a while to get the current up ?

Mine has been shorted most of the time for around 6 hrs now .

WHen I disconnect the jumper the current readings go up pretty fast ........then level off ......... amd then slowly drop a little .
The peak this time was 1.395 mA ........... after about 5 min it is holding at 1.391 mA

I am going to leave for a couple hours ........I think I will leave it shorted

gary

jeanna · « **Reply #163 on:** April 24, 2008, 07:15:36 PM »

Gary,

Quote

I don't have any core at all .......I am just measuring between the copper and iron .
doesn't seem to matter what end .

The only thing I did is get it wet

even the inside of one to the outside of the other?

jeanna

Pirate88179 · « **Reply #164 on:** April 24, 2008, 07:28:06 PM »

@ Gary:

I am glad you checked with the magnet. I know that saved me a lot of problems on my first two coil attempts. I am going to try to get some more wire this week to try one of these.

Maybe I should try shorting my buried coil for a while? Hmmm. I'll try anything to up the output. I believe Chad has our mA record here with almost 150. This is getting somewhere.

Bill

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