Discussion about the Lockridge Device

[citfta]

Hi again,

You posted this statement:
EDIT 1: If you all noticed, Q1 and Q3 are REPULSION, while Q2 and Q4 are ATTRACTION, so they are set at a perfect DIAGONAL ALIGNMENT...as we can always move Brushes Plane to make it more towards Attract Mode or towards Repulse Mode, meaning to INCREASE JUST ONE MODE MORE THAN THE OTHER, WHETHER REPULSION or ATTRACTION.
Example: If we move CCW the Brush Plane, like 15º, we will have more Attraction Mode than Repulsion. Where if we move Brush Plane CW from Neutral (12 O'clock) it will increase the Repulsion Mode.
From Factory these Dynamos are ALL set at what I call "NEUTRAL TORSION FIELD" where all Quadrants' FORCES are perfectly distributed equally.

That is completely correct.  However it reminded me of my early days of working with large generators and motors.  I was fortunate enough to get to work with an older very good motor tech.  On large DC motors and generators the brushes are adjustable.  Just a few degrees of shift clockwise or counter-clockwise can make a big difference.

What he showed me was that as we got away from the neutral brush position the efficiency of the motor or generator went down and the current went up as well as the sparking at the brushes.  In other words if we have more repulsion than attraction or vice versa we will lose efficiency and increase sparking at the brushes.  He showed me to adjust for minimum sparking and that is also the most efficient.

When you get to the point where you can test this,  please do so as I might not be remembering everything correctly, but I think I am.

Thanks for all you hard work,
Carroll

[Ufopolitics]

Hello Citfta and many thanks for that Post!!

Hello All, as Happy Thanksgiving to those that live on the States.

Yes, Citfta, your reasoning is correct, related to manually look for the least sparking in order to find that "sweet spot".

The 'Neutral Plane' I was referring to, on my previous post (as I have also shown the CAD Image) relates directly to Torsion Fields Quadrants for MOTORS.

However, if we go to the Hawkins Book Vol 2 (what a great book!!) there is on CHAPTER XX all related to 'Commutation and the Commutator' ON DYNAMOS (GENERATORS)

There are exactly three Images (Fig 301, 302, 303) where it explains everything -in great detail- related to obtaining a sparkless commutation.

I copied these three images, and I will post them below:

FIG 301: On this image it shows the 'Neutral Plane' perpendicular (90º) to the ´Normal Plane of Maximum Induction´, which is the straight line between opposite magnetic poles on Stator.
However, this image above is based on "IDEAL CONDITIONS"...where there is no FIELD DISTORTION, as no SELF INDUCTION, but if you read the explanation below image, it explains that those "disturbing effects" (Self Induction & Field Distortion) are present on ALL Dynamos.
And if you have noticed, the Brushes Plane is passing -just a little bit- the Normal Neutral Plane.

Now FIG 302 above, starts "landing us back to reality" and away from "idealistic" references. We can see clearly what takes place when Dynamo Armature is rotating according to arrow.
Now there are still -as reference only- the previous Normal Neutral Plane as the Max Induction Plane on Fig 301, however, here those TWO Planes have rotated exactly 45º (following rotation) to give us the change it takes to adapt to reality.

And Image above (FIG 303) is the "Final Detail" on Brush Plane adjustment settings, it introduces the Angle of Lead, where Brush Plane is now set at the End of this Angle, which is BEYOND the "New" Neutral Plane as it was shown first on FIG 302.
Then on further pages it goes to even greater detail about Brush Plane alignment with a close-up of just the Positive Brush in different adjustments.

AS A FINAL CONCLUSION:  The Commutation Plane (or Brushes Plane) is set on the EXTREME OPPOSITE SIDE to where REAL FIELD DISTORTION TAKES PLACE OR THE MAX INDUCTION PLANE.

FIELD DISTORTION AREAS ACCUMULATE DENSE FLUX or MORE LINES OF FORCE CONCENTRATION, THEREFORE THE HIGHER THE SELF-INDUCTION ON THIS END.

So, we do NOT want BRUSHES COMMUTATION on those areas, but as far from them as we could set them further away.

The Spark takes place because every time brushes Short Circuit a Coil, (or two segments at once) after it passes that point, coil REVERSES CURRENTS, producing the spark. And the less Flux, the less self-induction would be present at areas where there is not much concentration of flux.

And now, related to the Lockridge Device...I believe that the exact Plane where our Motor Side should be applying majority of Torque Force, is exactly at the Plane of Maximum Induction of the Dynamo on the Generating side.
Simply because on that Max Induction Plane is where majority of DRAG will be present whenever we LOAD the generator side.

CHAPTER XXIII is fully dedicated to DYNAMOS AS MOTORS.

Regards

Ufopolitics

[Ufopolitics]

Hello again,

Ok, so here I will be brief...as prior post basically relates to the way a Dynamo (as a Generator) is set, related to Brush Plane and Plane of Max Induction...

Here I will just be posting an extract of what is learned on CHAPTER XXIII (Motors).

Above Paragraph, in the very beginning of Chapter XXIII it reads clearly that a Dynamo as a Motor is the complete OPPOSITE of a Dynamo as Generator.

And so, image above resumes almost everything about the differences between Dynamo (Generator) as Dynamo as a Motor.
As BOTH MACHINES are rotating with the same Direction (CW), but we can see the BRUSH PLANES DIFFERENCES.
And finally, that Currents on a Dynamo as a Generator (left image) flow on the SAME DIRECTION as the ELECTROMOTIVE FORCE.
While on the Dynamo as a Motor, EMF is OPPOSITE to CURRENT FLOW.

Regards

Ufopolitics

[Ufopolitics]

Hello All,

Ok, so this great book gave us what I have been searching for a while, and even thought on making a complicated physical test in order to find out...but here it is!!

Now, bringing again FIG 302 here, so we can compare it in one single post:

And down below is my recreation of that same image above, except that I have enhanced some components...

As you can see, I have rearranged the way Positive and Negative Brushes and its plane were set from previous CAD that I have shown, and this is to be identical to FIG 302.

Now, if you go to FIG 302 above, please notice at 12 O'clock, the Normal Neutral Plane has an N' as at 6 O'clock it has an S'.

The upper Brush on the right has an arrow pointing "inwards" which means it is Negative charge. As the lower Brush is a Positive Brush with an arrow coming out of.

However, the most important part of all these drawings is the way that Dynamos working as a Generator manifests their Back EMF.

And those Polarizations (N' & S') on the Normal Neutral Plane let us know the way BEMF manifests on Armature...Then I interpreted that the "new" advanced Neutral Plane (Red Line on my drawing) according to Field Disturbances...this Plane MUST have the same Magnetic Polarization as the Normal Neutral Plane, therefore I named them as N" & S".

Then on my image I have defined the OPPOSITE MAGNETIC POLARITY (BEMF) developed at Dynamos as Generators on their Armatures whenever they are loaded.

As you can see the UPPER part of Armature has turned NORTH, as the LOWER is SOUTH, now, try to Rotate this Armature CW...and notice the OPPOSITION is made based on a FORWARD REPULSION, as an ATTRACTION DRAG from BOTH Stators.

In conclusion, this is the way an Armature of a Dynamo whenever is LOADED, is Magnetizing as a manifestation of Lenz Law, or Back EMF which OPPOSES ROTATION DIRECTION.

If someone already knew this, I must confess I did not...as I have never worked with old Dynamos as Generators before, but with typical AC Generators where the Inducing Field (Exciter) is on the Rotating Armature as the Induced or Output Fields are on the Stator part, a complete opposite of Dynamo's Design.

Anyways, I consider this knowledge have a very important part to make the Lockridge Device...

Now, all this work I have developed here is only due to the "two letters" (N' & S') on the Normal Neutral Plane of FIG 302...and I could be wrong, or it was just a "typo" on that book (which I doubt very much)

And if someone think my deductions are somehow wrong, please let me know here.

Thanks much and Regards

Ufopolitics

[rakarskiy]

Hi UFO!

On your slide with the armature which has slots for the winding, the magnetic flux through the armature core is not correct. Take a simulation of how it would be in an appropriate program like FEMM. I'm sorry, but I think that's where the error comes from. 

On the gif the DC motor that everyone has held in their hands, it also works in generation mode. It is a closed winding armature system.