@honk,

i certainly didn't mean to derail you with my pessimistic view.  i only wanted to steer you in the direction of the micro, with your vision.  it just seems to me it would be alot easier to make a flux boosted dual induction split spiral motor that could produce milliwatts of electricity than one that had to produce megawatts.  you can take that however you want and don't let me hinder you from your dream, but the sooner you see the limitations of a magnetically driven system, then the sooner in my opinion you will start to see the benifits of the reduction of size. i would love to just have one of your units that could power a single light.  or maybe my refridgerator even if it is a seperate unit.  small though they may be.

lol
sam

Another small but important update:

The heat annealed Mumetal samples will arrive early next week.
I can then test if this new core material really improves the magnetic properties and attraction force.

I have also increased the efficiency of the final Solenoid simply by swapping the round copper wire into square wire.
It allows for a lot better fillrate thus having less copper losses per turn ratio. Calculations show a 17% improvement.
This translates into a solenoid running at 600W and using square wire, will have the same strength as 720W input when using round wire.
But I haven't changed the small test solenoid into square wire. I will only do this on the final solenoids going into the large motor.
Elseway I couldn't compare differences towards the earlier solenoid test results.

I some other very good news to tell you guys.
Yesterday I applied my torque and Hp formula on Sprains small prototype wankel, aka Emelie, to see what the outcome would be.
http://freenrg.info/Sprain/Paul_Harry_Sprain_magnet_motor.avi
I know by fact that he is using 2x2x1" rotor magnets and I suppose he used the most regular grade N35.
From knowing the rotor magnet dimensions I estimated the real size and stator gradient of the entire motor.
His output claim on this motor was about 7W on the shaft at 90 RPM, and 3.1W going into solenoid. Meaning 4W surplus of Overunity.
Well, on to the good part. My calculations showed 7.66W output at 90 RPM. Now this is extremely close to his claim of 7W.

Just imagine my own design at the calculated 4.5KW output at 500 RPM.
Suddenly it seems even more likely I'm right on track due to the new numbers that prove his old claim.
Why shouldn't the formula be true on my own design when it fit's the Emilie. Soon we will know.
I guess the motor will be assembled and ready for testing within 1 1/2 month from now.

One small question, possibly stupid, Sprain motor was running at 90 rpm, and you estimate 500rpm for yours. Why do you think Sprains motor ran so slowly?

Not stupid. Good question. 

Well, simply because his first prototype had extremely low torque. I have calculated the stall torque to 1,2ft-lbs.
It's the force of the stall torque that is the causing the free RPM. The stronger the stall torque, the higher the RPM.
And I know by fact that his motor was free spinning at 180 RPM at no load. The 90 RPM was at 7W load.
The torque of an electric motor is a linear line between maximum torque at zero RPM and zero torque at maximum RPM
From this I can cut the stall torque at 1,2ft-lbs in half at 90 RPM, giving 7.66W at 0.6ft-lbs.

I'm happy to see that at least you find my ongoing development interesting.
Not many other readers here at OU forum seem to care to much.
But I'll push forward and finish the motor and if I'm not totaly wrong on this I will get myself a strong OU motor.

Thank you for your support, Supersam.

Perhaps the magnetic wankel is possible to miniaturize but the magnetic force will decrease in a even greater order.
And there is the effect of mass to. In a very small design I believe the accelerated mass is to small to affect the sticky spot.
It's not possible to design a solenoid equal in strength to a neodymium magnet without using supercooled wire.
And when the artificial sticky spot is weaker than the neo magnets some of the gained mass movement must be
sacrificed to help overcome the neodymium sticky spot. This is the reason for me moving to a larger design. More mass vs sticky spot.
And the stronger I can make the solenoid at manageable cooling, the less momentum is lost.

Thanks Acp.

Check your inbox...a small, but big, surprise for you...

Keep the Spiral spirit alive! I admire your model as I lurk in from time to time. I am quietly working on a permanent magnetic piston type design. If I can't get past my slight sticky spot, I will need a small 2 X 1/2 inch hollow solenoid to pulse at TDC. 

Best regards,
Jeff

Here's a pic on the generator I intend to use when testing the FBDISSM.
... 3 phase servo motor at 400V capable of 3.5KW.

Honk,

Is that the MITSUBISHI - HF Series - Servo Motor ?

- Schpankme

I received the heat threated Mumetal pieces yesterday and immediately tried them out in my test rig.
The higher permeability of Mumetal gave slightly higher solenoid face fields, perhaps 2-5% more flux.
But I'm sorry to report worse result (between 5-25% lesser) compared to ordinary Oriented Transformer Steel.
During the tests I noticed the magnet being less attracted to the Mumetal vs Oriented Steel.
The strength of a N45 neo is approx 1.33T and this might be the cause of the weaker results.
Mumetal saturates at 0.8T and Oriented Steel at 1.9T. This means I need to tryout another alloy at higher saturation level.

Permenorm can handle 1.55T (more than the neo) and have pretty good permeability at 120000.
The Mumetal had 250000 and Oriented steel have about 15000.
I'll get some pieces of Permenorm laser cut within a couple of days. (It's hard like spring steel)
If this material doesn't improve results I can just as well use ordinary cheap Oriented Steel.