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Author Topic: Floodrods Magnetic Testing Log  (Read 1118 times)

Offline Floor

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Re: Floodrods Magnetic Testing Log
« Reply #15 on: January 14, 2022, 05:40:45 AM »
It's easier than you think.

It will go something like this.

Measure the output work first (as just   one    of the flip flops)
The work done in those two motions is equal (one to the other).
Only one needs to be measured in order to know what the other is.

No electric input for now.

Manually position the pulsing magnet to one of its positions
(extended or retracted).
Lock it into that position (somehow).

What you measure is the force needed in order to pull the flipping magnet from
the strokeing magnet.

Those measurements are done in small increments of distance.

Grock that around for a little while and we can look into it in a little more detail
later on / before / if you decide to actualy do any measurements.

   later





Offline floodrod

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Re: Floodrods Magnetic Testing Log
« Reply #16 on: January 14, 2022, 05:54:24 AM »
Sweet- I appreciate you taking the time.  I will set that up tomorrow and post ya

You da man!

Offline floodrod

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Re: Floodrods Magnetic Testing Log
« Reply #17 on: January 14, 2022, 04:46:05 PM »
The closest the magnets get is somewhere about 4mm spacing, and furthest is about 9mm spacing (roughly).

I could construct the pulley / string rig and mount a hanging scale. Position the magnets in sticking position as you specified, and use the attached printout to keep uniform spacing in 1mm increments. 

Slowly apply force till the separation point and record the weight measurements at each 1mm increment to achieve said separation.

I wanted to run it by you before I print away and construct


Offline Floor

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Re: Floodrods Magnetic Testing Log
« Reply #18 on: January 14, 2022, 08:31:28 PM »
excellent...

note: correction of my first drawing from  "floodrod 1-14-22a.PNG"
       as
"floodrod 1-14-22a2.PNG"

so sorry

Also note that in the second drawing, that magnet is illustrated at 90 deg. wrong.

Offline Floor

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Re: Floodrods Magnetic Testing Log
« Reply #19 on: January 15, 2022, 03:25:03 AM »
Eventually you do a statement of the parameters of the device.

A sketch

Physical dimensions of the magnets used.

The type of magnets used (N42 or what ever).

The polar orientations of each magnet.

The polar orientations of the magnets in relationship to each other.

Radius of the rotation of the flipping magnets from the center of
     the axis of rotation, to the center of the magnet.

The number of degrees of the rotation of the flipping of the magnets (one direction).

The total length of the straight line travel, of the flipping of the magnets, as measured
      (one direction).

Others?

... ... ... ... ... ...
Then move on to probably, the electric power   input   into the device.


    P.S.
It is not critical that a pulley is used in order to maintain a pull which
is tangential.  One may manually adjust the direction from which pull is
applied, for each measurement in order that it is tangential. 

Because the change in degrees during rotation in this device is small, even
some error here will not be very significant I think.

Offline Floor

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Re: Floodrods Magnetic Testing Log
« Reply #20 on: January 15, 2022, 08:55:22 AM »
In the attached drawing   "Lucs Force Multiplication.png"
the "RO" stands for rotating.  This drawing is from an old topic.
The lable "RO counter weight not shown"  does not apply to this topic.

When a pulley is used rather than a lever, the pull direction
is always at 90 degrees to a line which is from the center of rotation
(tangential).  If the weight or force application string, is attached to a
lever one must be careful to maintain the correct direction of pull.

Offline floodrod

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Re: Floodrods Magnetic Testing Log
« Reply #21 on: January 15, 2022, 12:18:26 PM »
In the attached drawing   "Lucs Force Multiplication.png"
the "RO" stands for rotating.  This drawing is from an old topic.
The lable "RO counter weight not shown"  does not apply to this topic.

When a pulley is used rather than a lever, the pull direction
is always at 90 degrees to a line which is from the center of rotation
(tangential).  If the weight or force application string, is attached to a
lever one must be careful to maintain the correct direction of pull.

This way looks much easier.  The shaft is directly in the center of the teeter.

But I have a little emergency first- the header manifold on my 3 zone furnace is pouring water- and a storm coming monday in the dead of winter..

I need to attend to my houses heat .  Ill be back

Offline Floor

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Re: Floodrods Magnetic Testing Log
« Reply #22 on: January 15, 2022, 04:56:42 PM »
Do your thing. We will see you when when we do.