Lasted edited by Andrew Munsey, updated on June 14, 2016 at 9:32 pm.

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Plans - WhipMag history/construction and parts. "I find this large PDF to be the very useful. It appears to have all of the dialog between Al and OC, as well as specs -- as they evolved." (Yadaraf Feb. 7, 2008,3871.msg75762.html#msg75762)


See - which is where Al posts his photos.

OSPMM Collection of Al's Photos

Some Deleted Files Recovered - "I don't know what Al's logic is with releasing information and then deleting it, but here are some of the photos he deleted from the ning group. I recovered them from my browser cache. Maybe someone has a complete set." ( January 07, 2008)

Image:OC MPMM magnet motor close-up 600.jpg
Image:CLaNZeR replicat of OC MPMM 300.jpg

- - - -

Image:Oak MPMM labeled picture 500.jpg

RIGHT: Replica attempt photo at forum:

NOTE: Though there may be some helpful representations in this photo, this layout does not conform to the Al version including the following regards

Doesn't maintain octagonal shape of rotor magnet placement.

Doesn't adher to the 13-position stator magnet positioning around the perimeter.


On Jan. 6, 2008, CLaNZeR writes:

"pcstru4 has done some really nice images of AL's rig and got the thumbs up as being accurate."

Image:Pcstru4 drawing a OC MPMM 330.jpg
Image:Pcstru4 drawing b OC MPMM 330.jpg
Image:Pcstru4 drawing c OC MPMM 330.jpg
Jason Owen's drawings

Al has confirmed these as accurate.,3871.msg70719.html#msg70719

Image:View4.jpg - download drawing image files, pdf, dxf, etc.


Jason Owens drawings - "I FINALLY finished the 3D model with all the bells and whistles. I modified the rotor disk dimensions to fit the measurements given by Al. I am now working on drawing up some dimensioned drawings from the 3D model and will be posting those soon. In the mean time, here are a few photos of the model I made. By the way, I also ordered some magnets from K&J Magnetics today so I'm in as well." (Jan. 8, 2008)

Panacea drawings

"I have a Panacea registered engineer (with a lot of experience) building this for us ATM, will have full write up and disclosure if it gets working, here are the Blue prints he provided.",3871.msg70713.html#msg70713




B.W. Files - "Contains most of the information relating to the magnetic motor designed by OC and constructed by [Nikolabackwards]. In the text doc 'Judson' you will find the dimensions of the rotor and base plate, ect. I believe you have some of this information already, but some is missing. I am also going to work up a set of AutoCad Drawings based on this file so my replication will be as close to the original as possible." (Paraphrase Jan. 6, 2008)

SenseCoil.png - "Pic of the sensing coil that was use in some of the testing. Also it give excellent detail of the Judson damper." (B.W. Jan. 7)

Auto Cad Drawings,3871.msg69004.html#msg69004 - by Jason O.,3871.msg68853.html#msg68853 - by Jason O.,3871.msg69936.html#msg69936 - Nikolabackwards compliments Jason's drawing, makes some clarifications.


korkskrew's Whipmag Javascript Applet v1.4 (runs on Internet Explorer only)


In a post Al said the following.

Here's an actual set of measurements made right now.

Material HDPE

rotor diameter 144mm (5.6692???)

rotor thickness 18mm (.7087???)

distance from OUTER EDGE of rotor, on a radius, to INNER EDGE of magnet slots 13 mm (.5118???)

slots are symmetrically arrayed 1/4??? nominal width, 12 mm depth (.4724???)

slots cut in a single pass with a 2-fluted end mill 0.250???

Height of Stator relative to rotor magnets

"..., the relative height of the stator and rotor magnets seems important. I don't know if it's because of my particular geometry or whether it is critical to the effect itself, but the magnets shouldn't be in the same plane--that is, I am getting best results when the rotor magnets are rotating in a plane that is just slightly higher than the tops of the stator magnets, rather than down and centered vertically....",3871.msg70672.html#msg70672

Distance Between Rotor and Stator

On Jan. 16, 2008, ken_nyus wrote:

Al mentioned that 1 mm too close or too far, and the effect was not present. I believe he said that at a 4mm distance between rotor and stator, he felt air effects were creating problems. At 6mm I believe he said it was too far for the effect, but 5mm worked for him. (And as has been mentioned, out of a batch of 13 stators, a few(2?) worked easily, a few(2?) he could not get to work, and the rest were in the middle),3871.msg71032.html#msg71032

OCAL Magnokinetic Judson dampers

"...the unit runs faster without the magnokinetic Judson dampers. Typical stator speeds are 8000 rpm, rotor 2000. But the unit is quite unstable at those speeds, maybe due to the cheap bearings I used for the stators. But that's unknown, it could be that the bearing chatter actually contributes to the effect by some chaotic dynamical interaction. Don't ask me with what!

Anyway the unit will run up to high speed but only stays for a short time before the stator "drops out" and the rotor freewheels to a stop. I figured that a little eddy-current damping at high speeds (and proportionally less at low speeds, so the damping at startup speeds is essentially zero.) would do the trick. There was an adjustment process that took a couple hours to find the sweet spot and the orientation, and it seemed so close to an already drilled and tapped set of holes in the base, that I just used the existing holes, even though the positioning wasn't totally optimum...",3871.msg70669.html#msg70669

"...The dampers are tuned by trial and error. If too close they retard the magnet too much and it won't synch. Too far and there's no benefit. Once the distance is found, rotating a little at a time and trying the spin until I found a "sweet spot" is how I did it. The effect of the dampers is small, in any case...",3871.msg70684.html#msg70684

Quoting Bruce:

The OCAL magneto judson dampers are simply solid aluminum 1/2" diameter, 1/4" thick round. It has a hole in the center, large enough for a 4-40 screw, of brass or nylon to go through it, and thread into the base. Please see Jason's drawing.pdf,3871.msg70696.html#msg70696


OC motor parts - PDF of parts list

Parts list from the January 2008 ocmotor pdf above, with recent May 2008 updates. ('' Jan. 9, 2008)

Acrylic baseplate

Delrin stators

HDPE (High Density Polyethylene) Rotor disk

K&J Magnetics (3) P/N R834DIA for the stator

Rotor magnets (8) are from surplus, but repel-tested to be between N35 and N40 Rotor Magnet Repel Test

3 brass 4-40 screws, nuts and washers for stator magnets

Miniature ball-bearings for stator magnets -- RC helicopter part with dimensions: 0.500" O.D. x 0.125 I.D." x 0.1719" W. Boca Bearing is recommended as source

Stator magnet/bearing plastic housings/holders

Image:Als bearings.jpg

Magnets are from,3871.msg68060.html#msg68060

Stator: N42

Rotor: between N35 & N40 Rotor Magnet Repel Test,3871.msg70684.html#msg70684

<pesn type=,3871.msg71019.html#msg71019" str=",3871.msg71024.html#msg71024 [,3871.msg71026.html#msg71026"></pesn>


The spindle used in the January 4th video was not the simple 1/4-20 shaft that Al started with. The spindle in the video was shock mounted, and likely scavenged from a reel-to-reel tape deck. It has been suggested that the spindle causes the rotor to "wobble" (as demonstrated in the video) and that this contributes to the Whipmag effect. This is currently under investigation.

Top View of Spindle:

Image:Alsetalokin spindle.jpg

Bottom View showing shock mounts:

Rotor insert shaft adapter details:

Image:Rotor insert shaft adapter details.jpg
Type of Plastic

Quoting Al, I presume:

"...But I do not recommend using polycarbonate (Lexan )for any part of the machine--it's in the wrong place on the triboelectric series, if one of my theories is correct.

"Nor do I recommend acrylic plastic (Lucite, Plexiglas, Perspex?) for the rotor, if the base is acrylic. Different materials should probably be used. I used HDPE which at the opposite end of the plastic tribo series from acrylic.

"The Delrin (or Acetal in the civilized world) is what I used for the early rotors and all the stator bearing/magnet holders, and the 3.5 mm to 1/2 in shaft adapter. It is by far the nicest plastic to machine. ...",3871.msg70680.html#msg70680


On Jan. 18, 2008, JWK wrote:

Everyone attempting to replicate this device, before you go any further you really need to ensure you have read this thread (below) from start to finish (finish being a few day's after the video was released). There are many things mentioned on this thread that not all replicators appears to have picked up. height and distance of stators included.

- - - -

On Jan. 18, 2008, CLaNZeR added:

Or easier to read this that has all the important points compiled into it:

Compliments of


On Jan. 14, 2008, Al... wrote:

On perseverance:

It took me literally days of spinning and experimenting before I had a hint that something interesting might be happening--the decreased rotor drag that I first noted before the holidays. After that, more days of trial and error and serendipitous mistakes before I even found the AGW rotation modes. By Accident! So don't get discouraged if nothing seems to work--you may not have the right components or something, or it's not put together right. Recall also that about half my magnet-bearing pairs are ineffective.

I would guess that most people will get decreased drag and increased rundown times if they get the magnets right. But extended run times like I saw are probably a result of some EM interaction that's happening in my apartment and at work. For sure it isn't anything like OU.

Machining Services

Portland, OR

On Jan. 22, 2008, geodan wrote:

OK, for all the wannabe replicators (like me) out there, I just got pricing back from Small Parts Mfg. (Portland OR) for machining components as pe Jason's drawings... the prices look way too high to me until you get up to a quantity of 25 or so... I think that the first order of business might be to just see if there is enough interest to get prices down...


Package Price includes the following:

1pc HDPE rotor disc, 1 pc acrylic base plate,

1 pc derlin stator holder 6 pc aluminum dampers,

6 pcs 4-40 screws x1/2.

(I gave them Jason's drawings, Not sure how they came up with this combination of parts)

quantity price (USD)

1 - 750

2 - 595

5 - 450

10 - 295

25 - 150

50 - 99


Characterization and Optimization

On Jan. 19, 2008, fritz writes:

I think there are 3 clear optimization steps:

1) Finetune the position of the rotor magnets

(I don´t think that all this magnets have exactly the same strength)

or match the magnets out of a bigger batch with a

magnetometer - or use a reference stator with a newtonmeter


This first goal is to get a symmetrical, smooth rotorfield.

2) Finetune the position of the stator magnets

I think that the stator magnets have slightly different strength.

If you finetune the distance of each statormagnet to

the already adjusted rotor using newtonmeter or measure the

resulting field - you can compensate differents in stator magnets

and achieve symmetrical statorfields.

3) would be to balance rotor and stators in the conventional way.

Even slightly unsymmetry and slightly different strength in the used

material can have a huge difference in the resulting force.

Measuring the force and the field is the key to operation -

then it would make sense to alter the tilt/distance/force of the stator