STEORN DEMO LIVE & STREAM in Dublin, December 15th, 10 AM

[Omega_0]

shit I am going to build it...

duty cycle really does not change... I was thinking something else but my english is other story...

you might be right guys..

I apologize for rush statements...

It is the frequency that is changing, as the rotor gains speed. Duty cycle has nothing to do with OU, you can minimize the duty cycle to arbitrary values, depending on the rotor geometry and core properties.

[Omnibus]

@Reincarnate,

Can you point to a link where Thane Heins'motor is described in more detail?

[exnihiloest]

Hi All,

As the mechanics are bi-directional with timing the only issue as to rotational direction, the BEMF resulting when the coil/s are turned off ADDS to the rotation and hence efficiency. 
...

When the magnetic field collapses, BEMF is generated. Recovering BEMF implies there is a current circulating in the coil. This current creates a magnetic field that opposes the change of the collapsing magnetic field.
When the collapsing field is due to the motion of a permanent magnet, it means that the field created by the current recovered from the BEMF opposes the motion of the permanent magnet.
There is absolutely nothing in Steorn experiment that would contradict theory and facts known from near two centuries.

Being married to two women...

Sorry Old Man, I'm not interested neither in personnal problems nor in psychology. I discuss science and experiments. Please keep apart irrationnal blah and beliefs.
I have built hundreds of setups in electronics. Even though some were very surprising, after analysing I have never found one against the laws of physics.
Neither pretty setups nor hard works are evidence of new laws of physics. We need proofs. We need experiments with accurate measurements. We don't need conventional motors working from a powerful charged battery as Steorn do it!

[Omnibus]

There is absolutely nothing in Steorn experiment that would contradict theory and facts known from near two centuries.

Quite the contrary. Spinning of a rotor for free (the energy to saturate core being fully recoverable) contradicts theory and facts known for near two centuries and more.

[broli]

When the collapsing field is due to the motion of a permanent magnet, it means that the field created by the current recovered from the BEMF opposes the motion of the permanent magnet.

This statement is not true. Reasons:

1) Current in coil never causes attraction of magnet.
2) When the field "collapses" the current doesn't reverse instantaneously as some seem to believe. The current moves on for a while until it reverses. This has to do with the simple induction law E=L*dI/dt where I=E/L*t. What it means for current to collapse is for instance if you reverse the polarity of the battery. Suddenly that last formula shows the slow becomes negative and thus current decreases towards zero. But if allowed it will cross this zero line and start storing magnetic energy again. Try this simulation to see it happen:

1) Charge the inductor
2) Flip the switch
3) Switch the batteries by dragging and dropping
4) Flip the switch again and look at the yellow current trace

http://www.falstad.com/circuit/

$ 1 5.0E-6 66.51416330443618 41 5.0 50
S 336 176 336 96 0 0 false 0
w 176 96 320 96 1
w 352 96 480 96 1
w 480 96 480 368 0
l 336 176 336 368 0 3.0 -0.5241041666684361
w 176 368 336 368 0
w 336 368 480 368 0
v 176 96 176 368 0 0 40.0 5.0 0.0 0.0 0.5
v 112 368 112 96 0 0 40.0 5.0 0.0 0.0 0.5
o 4 128 0 35 5.0 0.8 0 -1

A lot of people have misconceptions about emf not induced by a magnet. The current never reverses direction instantaneously in a coil that would defeat the whole purpose of the momentum analogy in a coil. In mechanics a constant back force decreases the velocity of a big massive object over time until the velocity reverses, but while this is happening the rate of velocity change (aka acceleration) remained constant just like the rate of current change.