Hilden-Brand Magnet Motor

[Honk]

Thank you, I'm glad you like my Coil Booster idea.

All "puls" have an "e" by now. Sometimes my spelling get all wrong.

Do you really think the air gap matters that much? The increased force from the valve
will always be there. It does not matter if the flux comes from electricity or a magnet.
Please see the graph I have attached. It show force at a distance at predefined flux.
This very useful magnet calculator is for free, but you need to register.
Follow this link. http://www.imstrading.com/cgi-bin/flux-graphs?page=fluxgraphs
I have used this tool before when I designed an ironless axial flux pancake motor.

As long as Jack can turn the flux on/off from the magnets then there is power
to be used for work. I'm actually planing a Hilden Brand motor of my own and
the gap in my design is so far only 0.2mm, but I can go as low as 0.1mm.
I believe it's possible to use this narrow gap, because I got a friend who is
working at a facility that cuts metal by laser. Their machines are pretty accurate.
I just draw the stuff I need in AutoCad and then he returns the metal pieces to me.

[MeggerMan]

Hi Honk,
No it needs to be much closer than 1mm or maybe even 0.1mm.

The simulations I have done have a gap of 0.0127mm

Femm shows that for a neo magnet of 1" OD and 1" length, 200 turns of 0.8mm wire, and steel sleeve of 0.4" thick and pole pieces 1" square in cross section, the ideal current is 0.25A @ 0.044 V (about 10mW)

[JackH]

Hello Rob,

[Honk]

Another thing about this valve is that it will not become over unity untill you get up to a 2 in" permanent magnet.  I tryed it with 1 in" magnets and it was over unity but did not have any power to do things with.

All I know is that the bigger the magnet the more efficiency you will get.

Later,,,,,,JackH

Hi Jack.
Nice work. I look forward to see your 5HP motor in overunity action.

I have some questions if that's OK with you.

1) You have told us that the valve is not that efficient at high RPM.
    Can this be caused by the "Flux build up time" in the coil?
    It can be up to 50ms long & if the rotor spinns to fast it will miss the magnetic flux.

2) When you mention a 2" magnet, do you mean a cube at 2x2x2 inch?

3) I'm planning to build a Hilden Brand motor with 3 valves myself. I'll use N52 magnets.
    Do you think 12W is enough to equalize the coil to the magnet?

4) How do you estimate the number of turns in a coil to fit a certain size of magnet?

Best regards and good luck.
I will love to see your latest motor doing some heavy overunity work.

[MeggerMan]

Hi Jack,
I can easily change the sim to a 2" magnet but I think the results will be the same.
This may be a factor to do with ideal current.
I do not think that the Femm simulation is showing anything like results you are seeing. Wether the permeability is wrong or something, I am not sure.

The masking tape represents a good gap and is probably larger than my simulation gap.

What I need to see is a graph of lifting force against current for the 1", 2" and 3" magnets versus iron cores.

Could you do a series of tests for me?
Try lifting a weight with different amounts of current in the coil.
Say from 1/10 of the current you used in your previous test and go up in steps of 1/10 of the current.
Then repeat it with an iron core instead of the magnet core.
I can then plot the results on a graph for you.
This way I can tell you exactly what the optimum current will be by looking at the results.

Regards
Rob