OS:MYLOW:Howard Johnson Magnets

Lasted edited by Andrew Munsey, updated on June 14, 2016 at 9:36 pm.

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Mylow Rotor Magnet Spacing and Howard Johnson Stator Magnets

"Rickoff" sent the following on April 12, 2009.

Image:Actual magnet spacing on rotor 450.jpg

This layout diagram could be useful to people for the purpose of understanding what MYLOW did. And if slightly wider channel magnets are used, they can be laid out to split the difference where they cross the boundary lines. This will only reduce the intervening spaces between the magnet groupings, which should not be problematic. If it is deemed that the intervening space would be diminished to a considerable extent, then groups containing one less magnet could be utilized.

I also agree that that the spacing between individual rotor magnets in MYLOW's working models varies somewhat. This is in accord with Howard Johnson's patent diagram, which shows the spacing increasing between each magnet in the group, from left to right.

I have attached a diagram I prepared, showing this relative spacing (see HJ stator-rotor spacing.jpg).

Image:HJ stator-rotor spacing bf16.gif

I am also attaching a diagram showing the precise measurements of HJ's stator magnet (see HJ stator magnet dimensions.jpg).

Image:HJ stator magnet dimensions 650.gif

The greatest problem thus far has been in coming up with a source for an effective, strong, and long-lasting stator magnet in this configuration and magnetization. I believe the problem is now solved, Stirling. A new process for manufacturing neo magnets is known as "NEOFORM BONDING." It allows for any shape neo magnet, and for any desired magnetization direction. I really think this is the "cat's meow" for obtaining a stator magnet sufficent to the job of obtaining useful and powerful rotation of a magnetic motor.

Image:Curved Neoform Bonded magnet 500.jpg

I am attaching information about this in the file, "Curved Neoform Bonded magnet.jpg". Notice that the curved magnet pictured therein is very close in form to the HJ stator magnet, and would probably work as-is, if they have that in stock and axially magnetized with the poles at the ends. I have contacted the manufacturer to request further info as to availability and sizing, and also included an attachment showing the preferred measurements. I intentionally left off the diagram title so that "Howard Johnson" and "stator magnet" would not be seen, and changed the file name sent to them as "magnet measurements." I figured that it would be best not to give reference to the actual application, as this could result in non-cooperation and/or suppression of efforts to obtain these. For the same reason, it would probably be best if you did not post this NEOFORM magnet information, since it might likeky result in a flood of info requests going to the company. I will send you further info on this as soon as I receive it, and we can then determine how best to place a single order for the magnets so as to not touch off a firestorm of suppression. Just wanted you to be aware of this very promising development.

I notice that MYLOW has experimented with bar magnets, and that they worked quite well.


( YouTube)

If you go to 2:22 elapsed time in this video, you will see that the propulsive effect is quite strong, and that it pushes the rotor a half revolution. The rotor then slows enough to stop the second set of magnets as they approach the stator. If the groupings were laid out similarly to MYLOW's channel magnet setups, with a narrower space between groupings, I think the force would continue the rotation. Shielding the first magnet of each group would also help to smooth the rotation and lessen the unwanted repulsion effect as the group approaches the stator. I see no reason why bar magnets cannot be used for successful builds, and they would certainly be easier to source than the channel magnets. Laying the rotor magnets flat on the rotor surface, on the permeability plates, will also alleviate the problem of the magnets coming unglued, and will allow the stator magnet to be focused from a much closer proximity, resulting in power and speed increase. Proper balancing, though, will be essential.

I hope you find this information informative and useful, Stirling.

Best regards to you,

Rick aka "Rickoff"

> From: sterlingda

> To: rickandlezel {at}

> CC:

> Subject: MYLOW Rotor Magnet Spacing

> Date: Fri, 10 Apr 2009 08:22:09 -0600


> Hi Rickoff,


> The rotor spacing is far from uniform. A more helpful piece of info would

> be a measurement of many along with an average.


> Regarding the second image, remember that these are using magnets that are

> out of stock and no longer available (and now demagnetized), so it would not

> be good to consider this as a reliable template.


> I went ahead and posted the second one on the Plans page, along with that

> caveat.



> Thanks


> Sterling