Switchable Magnets.

[Pirate88179]

Here's another email response I got about the "Noga 0039" with 283 pounds of holding force at "Amazon":

The question was: Does the switch require more force with increased holding force?

Answer from Kevin:

"No the switch turns on off the same as the smaller size"

NOGA Magnetic Holder Bed - Model: DG0039

Another answer to the same question from Selecio:

"All the same". 

That is a photo of a magnetic base dial indicator holder...we had about 30 of those.

For their size and holding power, those are very hard to turn on/off.  But, you are right that you could add a lever as long as you wanted and more more distance with less effort.

The magnetic chucks I spoke of earlier, already have about a 12" long handle which could be made longer.  Even a small magnetic chuck would have many, many times the holding power of the device you posted a photo of above.

Bill

[synchro1]

@Pirate88179,

Here's a picture of a "Magnet Chuck". What's the purpose of the "Allen Wrench" pictured along side it? It says "On" right above it. You're right, it appears many times stronger then the "Magnetic Base". Two of these Chucks should work the same way joined at the Allen Wrench, but deliver thousands of pounds in pull force to the "Rocker Arm" attracting plates.

The one on the bottom has a larger throw handle:

[synchro1]

Below is a "Radial Electro-Powered Permanent Magnet Chuck" and it's motor controller.

[synchro1]

Two of these "Radial Electro-Powered Permanent Magnet Chucks" could power  a "Rocker arm" reciprocation pump with two steel holding plates. Chances are this set-up is already overunity with the thousands of pounds of holding force for the tiny amount of switching power. The bottom part comes complete off the shelf. Thanks to "Pirate88179" for this information.

[mscoffman]

 syncro1,

My computer is having keyboard problems, I wanted to get back quicker then is happening.

I have decided that mechanical methods using an N52 flapper magnetic may
be simpler to design and implement then hydraulic means.

(o) Take an N52 magnet in the "Radio Shack" form factor but magnetized it across it's second
longest side. Now mount it on a shaft positioned 2/3 the way on its smallest area face drilled through to
the other. This is a flapper magnet.

(o) Now remove the knobs and mount one-to-one gearing on the input shafts. Turn the
gears to right and the right unit's face turns on(n/s), turn the gears to the left and the left
(n/s) unit's face turns on, mount the above flapper magnet such that the flapper will follow the left
right face action.

(o) Now do gearing reduction such the D-input D-output require the same actuation distance. It may take multiple
shaft reductions to get them the same. Hopefully the output side still retains the greatest torque afterwards.

(o) Link (3) units together in a loop with linkages then stand back.

This should be calculation verifiable when torques (in in-lbs) are given in the specs.
Hydraulics are nice for accumulators, but you want to get rid of Rober Val (scale like, parallel) force linkages.


..S..MarkSCoffman