Theory of ball bearing motor

A

amdxjunk

Guest
Hi,
I built one of these ball bearing motors and it works.
The going theory of propulsion is heat expansion, I'd like to see other
theories considered. (magnetic)

http://homepage.ntlworld.com/electricstuff/bbmotor.html#article

A question I have, If two parallel wires are carrying current in the same
direction, do the wires attract or repel?
(Two parallel wires as in two parallel ball bearings)
 
"amdxjunk" <nojunk@knology> wrote in message
news:efce3$42ad7cdc$18d64e32$11469@KNOLOGY.NET...
Hi,
I built one of these ball bearing motors and it works.
The going theory of propulsion is heat expansion, I'd like to see other
theories considered. (magnetic)

http://homepage.ntlworld.com/electricstuff/bbmotor.html#article

A question I have, If two parallel wires are carrying current in the same
direction, do the wires attract or repel?
(Two parallel wires as in two parallel ball bearings)
Click to expand...
i think the heating expanding ball theory totaly explains it,
any magnetic thoery would require motion in one direction as it is driven
from dc.

however if you put a large magnet in the axis of the spindle in between the
ball bearings this would make a unipolar motor.

Colin =^.^=
 
On Mon, 13 Jun 2005 07:32:16 -0500, "amdxjunk" <nojunk@knology> wrote:

Hi,
I built one of these ball bearing motors and it works.
The going theory of propulsion is heat expansion, I'd like to see other
theories considered. (magnetic)

http://homepage.ntlworld.com/electricstuff/bbmotor.html#article

A question I have, If two parallel wires are carrying current in the same
direction, do the wires attract or repel?
(Two parallel wires as in two parallel ball bearings)
Click to expand...
They repel.

--
John Fields
Professional Circuit Designer
 
colin wrote:
"amdxjunk" <nojunk@knology> wrote in message
news:efce3$42ad7cdc$18d64e32$11469@KNOLOGY.NET...

Hi,
I built one of these ball bearing motors and it works.
The going theory of propulsion is heat expansion, I'd like to see other
theories considered. (magnetic)

http://homepage.ntlworld.com/electricstuff/bbmotor.html#article

A question I have, If two parallel wires are carrying current in the same
direction, do the wires attract or repel?
(Two parallel wires as in two parallel ball bearings)


i think the heating expanding ball theory totaly explains it,
any magnetic thoery would require motion in one direction as it is driven
from dc.

however if you put a large magnet in the axis of the spindle in between the
ball bearings this would make a unipolar motor.

Colin =^.^=
Click to expand...
Do any "isotropic piezoelectric" materials exist?
 
On Mon, 13 Jun 2005 12:10:52 -0500, the renowned John Fields
<jfields@austininstruments.com> wrote:

On Mon, 13 Jun 2005 16:23:00 GMT, "colin"
no.spam.for.me@ntlworld.com> wrote:

"amdxjunk" <nojunk@knology> wrote in message
news:efce3$42ad7cdc$18d64e32$11469@KNOLOGY.NET...
Hi,
I built one of these ball bearing motors and it works.
The going theory of propulsion is heat expansion, I'd like to see other
theories considered. (magnetic)

http://homepage.ntlworld.com/electricstuff/bbmotor.html#article

A question I have, If two parallel wires are carrying current in the same
direction, do the wires attract or repel?
(Two parallel wires as in two parallel ball bearings)

i think the heating expanding ball theory totaly explains it,
any magnetic thoery would require motion in one direction as it is driven
from dc.

however if you put a large magnet in the axis of the spindle in between the
ball bearings this would make a unipolar motor.

---
Homopolar?
Click to expand...
Well, Pride Week *is* coming.


Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
speff@interlog.com Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com
 
On Mon, 13 Jun 2005 11:56:38 -0500, John Fields
<jfields@austininstruments.com> wrote:

On Mon, 13 Jun 2005 07:32:16 -0500, "amdxjunk" <nojunk@knology> wrote:

Hi,
I built one of these ball bearing motors and it works.
The going theory of propulsion is heat expansion, I'd like to see other
theories considered. (magnetic)

http://homepage.ntlworld.com/electricstuff/bbmotor.html#article

A question I have, If two parallel wires are carrying current in the same
direction, do the wires attract or repel?
(Two parallel wires as in two parallel ball bearings)

They repel.
Click to expand...

Good guess. But they attract.

John
 
"John Larkin" <jjlarkin@highNOTlandTHIStechnologyPART.com> wrote in message
news:aihra115ddktp9bd3691sumv03tttuqldh@4ax.com...
On Mon, 13 Jun 2005 11:56:38 -0500, John Fields
jfields@austininstruments.com> wrote:

On Mon, 13 Jun 2005 07:32:16 -0500, "amdxjunk" <nojunk@knology> wrote:

Hi,
I built one of these ball bearing motors and it works.
The going theory of propulsion is heat expansion, I'd like to see other
theories considered. (magnetic)

http://homepage.ntlworld.com/electricstuff/bbmotor.html#article

A question I have, If two parallel wires are carrying current in the
same
direction, do the wires attract or repel?
(Two parallel wires as in two parallel ball bearings)

They repel.


Good guess. But they attract.

John
Click to expand...
I would of guesed they atract but i wasnt sure i was going to look it up,
then i remembered that if u have a superconductor, a wire carying a curent
would induce a curent in the oposite direction and repel, so curents in the
same direction must atract. if this is the case how come electrons traveling
down a wire dont all bunch up in the center instead of moving to the edge
like they do at RF ?

Colin =^.^=
 
"John Fields" <jfields@austininstruments.com> wrote in message
news:agfra1hurj1qmft2i78umpi0l6h4hkl4sf@4ax.com...
On Mon, 13 Jun 2005 16:23:00 GMT, "colin"
no.spam.for.me@ntlworld.com> wrote:

"amdxjunk" <nojunk@knology> wrote in message
news:efce3$42ad7cdc$18d64e32$11469@KNOLOGY.NET...
Hi,
I built one of these ball bearing motors and it works.
The going theory of propulsion is heat expansion, I'd like to see other
theories considered. (magnetic)

http://homepage.ntlworld.com/electricstuff/bbmotor.html#article

A question I have, If two parallel wires are carrying current in the
same
direction, do the wires attract or repel?
(Two parallel wires as in two parallel ball bearings)

i think the heating expanding ball theory totaly explains it,
any magnetic thoery would require motion in one direction as it is driven
from dc.

however if you put a large magnet in the axis of the spindle in between
the
ball bearings this would make a unipolar motor.

---
Homopolar?
Click to expand...
Ooops yes thats the one, also ... actualy i think the ball races would need
to rotate in oposite directions. so i gues the shaft would need to be split
in the center with a simple bearing.

its like a farady disc at each end. i had thought of building such a thing
to see what hapened.

the balls in the cages act like the wire that dangled down in the mercury
(asuming the cages were plastic), the outer shell acts like the mercury
contact.

its amusing some of the hype about free energy from these sorts of machines.

Colin =^.^=
 
"colin" <no.spam.for.me@ntlworld.com> wrote in message
news:NQjre.14064$jS3.6581@newsfe2-win.ntli.net...
....
(regarding force between parallel conductors carrying current
in the same direction)
I would of guesed they atract but i wasnt sure i was going to look it up,
then i remembered that if u have a superconductor, a wire carying a curent
would induce a curent in the oposite direction and repel, so curents in the
same direction must atract. if this is the case how come electrons traveling
down a wire dont all bunch up in the center instead of moving to the edge
like they do at RF ?
Click to expand...

To bunch up in the center would produce an electric
field, due to positive charge nearer the surface and
negative charge nearer the center. This field tends to
keep the charges equally distributed. But there is a
bunching effect, where (at DC) the force toward the
center due to the magnetic field is balanced by the
force away due to that electric field.

--
--Larry Brasfield
email: donotspam_larry_brasfield@hotmail.com
Above views may belong only to me.
 
On Mon, 13 Jun 2005 10:46:48 -0700, John Larkin
<jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

On Mon, 13 Jun 2005 11:56:38 -0500, John Fields
jfields@austininstruments.com> wrote:

On Mon, 13 Jun 2005 07:32:16 -0500, "amdxjunk" <nojunk@knology> wrote:

Hi,
I built one of these ball bearing motors and it works.
The going theory of propulsion is heat expansion, I'd like to see other
theories considered. (magnetic)

http://homepage.ntlworld.com/electricstuff/bbmotor.html#article

A question I have, If two parallel wires are carrying current in the same
direction, do the wires attract or repel?
(Two parallel wires as in two parallel ball bearings)

They repel.


Good guess. But they attract.
Click to expand...
---
Yup! Thanks.

--
John Fields
Professional Circuit Designer
 
"Larry Brasfield" <donotspam_larry_brasfield@hotmail.com> wrote in message
news:ghkre.40$j85.2851@news.uswest.net...
"colin" <no.spam.for.me@ntlworld.com> wrote in message
news:NQjre.14064$jS3.6581@newsfe2-win.ntli.net...
...
(regarding force between parallel conductors carrying current
in the same direction)
I would of guesed they atract but i wasnt sure i was going to look it
up,
then i remembered that if u have a superconductor, a wire carying a
curent
would induce a curent in the oposite direction and repel, so curents in
the
same direction must atract. if this is the case how come electrons
traveling
down a wire dont all bunch up in the center instead of moving to the
edge
like they do at RF ?


To bunch up in the center would produce an electric
field, due to positive charge nearer the surface and
negative charge nearer the center. This field tends to
keep the charges equally distributed. But there is a
bunching effect, where (at DC) the force toward the
center due to the magnetic field is balanced by the
force away due to that electric field.

--
--Larry Brasfield
Click to expand...
aha, of course :)

Colin =^.^=
 
A question I have, If two parallel wires are carrying >current in the same
direction, do the wires attract or >repel?
Click to expand...

They repel.


Good guess. But they attract.

so currents in the same direction must attract.

Yup! Thanks.

And the truth is that parallel wires carrying current in the same
Click to expand...
direction--

attract [ ] repel [ ]

Check one only :)
 
A question I have, If two parallel wires are carrying >current in the same
direction, do the wires attract or >repel?
Click to expand...

They repel.


Good guess. But they attract.

so currents in the same direction must attract.

Yup! Thanks.

And the truth is that parallel wires carrying current in the same
Click to expand...
direction--

attract [ ] repel [ ]

Check one only :)
 
On Mon, 13 Jun 2005 18:50:27 -0500, "amdxjunk" <nojunk@knology> wrote:

A question I have, If two parallel wires are carrying >current in the same
direction, do the wires attract or >repel?

They repel.


Good guess. But they attract.

so currents in the same direction must attract.

Yup! Thanks.

And the truth is that parallel wires carrying current in the same
direction--

attract [ ] repel [ ]

Check one only :)
Click to expand...
---

news:qm8sa19n1gk06tj8b1q92fpemuqaecorc7@4ax.com


--
John Fields
Professional Circuit Designer
 
.... wouldn't the life expectancy of such a motor be rather short?

Mainly due to the contact of the ball bearings degrading quickly and
becoming a high resistance?

John

"amdxjunk" <nojunk@knology> wrote in message
news:efce3$42ad7cdc$18d64e32$11469@KNOLOGY.NET...
Hi,
I built one of these ball bearing motors and it works.
The going theory of propulsion is heat expansion, I'd like to see
other
theories considered. (magnetic)

http://homepage.ntlworld.com/electricstuff/bbmotor.html#article

A question I have, If two parallel wires are carrying current in the
same
direction, do the wires attract or repel?
(Two parallel wires as in two parallel ball bearings)
Click to expand...
 
... wouldn't the life expectancy of such a motor be rather short?

John

John, that depends on your definition of short.
Click to expand...
I have ran mine a total of about 40 seconds.
Not continuously though! ;-)
 
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