F.B.D.I.S.S.M - Flux.Boosted.Dual.Induction.Split.Spiral.Motor.

[arringtj]

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

[nfeijo]

          Honk,

          Do not think people is not paying attention to your nice work. Lots of people are working hard themselves and following your efforts with your projects. You are one of the best prepared among us. I check everyday your progress and wish you all the best.

           Ney
         

[Schpankme]

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

[Honk]

Yes, but it's an older model that was replaced by a new motor.
And they let me keep this one for my own projects, lol.

[Honk]

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.