Working Magnetic Motor on you tube??

[vipond50]

@ Bill,

What do you mean about the stator's being of the wrong size?  Can you give more detail, please.   

@ All

I ordered from Mike, three high precision bearings for testing, for the stators.  He is pricing non magnetic bearings for us, and I will post it.

I want to test with both bearing and with N35's and N42's.  I will post some pictures, when everything has arrived.

Cheers,

Bruce 

HI Bruce
I am in the process of machining a new Rotor to what my measuring with AC indicates. I do know that if the rotor magnets are not at the correct radius there will be No Joy. If the New Mag's work out as i hope then I will post them to the Group. I do not want anyone to work this until I see it for myself. No point in the others spending there funding on some thing that may not function. I have found this out that latching will and can occur even though the magnet radius is incorrect.
Will update what happens after testing.

Happy Testing
Bill

[geodan]

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...
You can contact me and I can keep a list of people (forum names are fine) and what they want...
If we get enough interest to get decent pricing then we would each contact SPM directly and make our own financial and shipping arrangements, We would use our forum names to insure that we get the volume price. (BTW, I'm not making anything on this, I'll be paying same group price as everyone else...)

(If anyone can get us a better deal please post it here.!)

Please feel free to contact SPM directly with any questions... I'll be happy to keep track of who wants what...
I gave them Jason's drawings and they came up with this configuration... I'm sure that we can correct the quantitie etc...)

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

I asked SPM to itemize, in case people wanted just some parts but not all etc... this was the reply...

"The simplest way for me to break this down for you is by percentages...

I will honor piece prices as a percentage of the Original PRICE and QTY quoted on VQ772 as follows...

Rotor   45%    Qty 1 ( 750 x .45 = 337.50 Ea )  Qty 5  ( 450 x .45 = 202.50 Ea ) For Example
Base    40%    Qty 2 ( 595 x .40 = 238.00 Ea )  Qty 10 ( 295 x .40 = 118.00 Ea ) For Example
Stator    8%    Qty 1 ( 750 x .08 =  60.00 Ea )  Qty 5 ( 450 x .08 = 36.00 Ea ) For Example
Damper 7%    Qty 5 ( 450 x .07 = 31.50 Ea )   Qty 10 ( 295 x .07 =  20.65 Ea ) For Example **

** ( Price includes 6 Dampeners )

Please email me if you have any questions, and I will do my best to get you an answer...  Sorry for not breaking this down in a better format, as I am pressed for time...  If you need this quote formalized (like the original one I sent you), please let us know, and give us a few days, and we will have it for you...  Otherwise, I hope this works for what you need...

Thanks again for the opportunity, I hope that we can help you out with this interesting project...

Regards ~"

(The contact at SPM is...)

Mert Rockney Jr.
Small Parts Manufacturing, Co. Inc.
Email: mert@smallpartsmfg.com
Tel:    (503) 287-1181
Fax:   (503) 288-4753



geodan

[ken_nyus]

So what can we learn from combining the stator magnetic field change over time in the sawtooth pattern, with the stator speedup/slowdown over time as shown in Lumens experiment?

RunningBare, you said the sawtooth pattern was the last thing you would expect.

How about this thought experiment:

Take the pattern over time you would expect...
Now what shape of acceleration/deceleration would be needed to turn your expected pattern into a saw-tooth pattern?
It should be the same as the pattern seen by Lumen.

Or we could take the saw-tooth pattern, combine it with Lumens speedup/slowdown curve, and we should get the pattern you expected.

Hope this makes sense.

[Omnibus]

@btentzer,

I wonder if you found the address of the guys in Washington who offer the N35 cylinder magnets? I'd like to try rotor magnets of different strengths. Regarding the stator magnets, one problem I'm having is that I can't get the magnet and the bearing out of the encasement to try different combinations as @alsetalokin suggested.

[RunningBare]

The reason I was not expecting a sawtooth waveform, see picture below, excuse the image, it is just a rough analogy

If someone could confirm or show the field shape to be different please?

The way I figure it, the scope readings should have given sharp dips for point A and B