Lockridge Device - Peter Lindemann

[mbrownn]

Although not about the Lockridge device the videos by squires and babcock teach you much about how the Lockridge works. The squires video talks about one of the main functions of the trifilar coil

[wantomake]

Progress ?

Hey mbrown,

Was busy testing the trifilar coil and seeing interesting things. Didn't know so much power comes out of one. Like you said, "but we have not taken into account the recovery of the pulses and the actions of the trifilar coil." I want to learn more about this as I try different things. Hope to get the case finished soon so I can wrap the trifilar coil around it and see the effect it has on motor and generator coils inside.

wantomake

[mbrownn]

Here is the FEMM showing the flux path, the energized coils being at 9 o'clock and 3 o'clock and the generator coils being at 12 and 6.

Notice the flux at the energized coils and compare that with the flux on the generator coils. This is why there is little BEMF on the energized coils yet a large generated EMF.

Now combine this with a wave wound armature AKA Peter's, with recovery and you are half way to having a self running motor generator

Typically a Universal type motor is 35% efficient but with the generator being on the same core as the motor there are no additional iron losses at the generator. This also is true of any transformer actions. Yes this is still well below 100% efficiency but we have not taken into account the recovery of the pulses and the actions of the trifilar coil.

[mbrownn]

Your motor needs to be four pole and this is how you set it up.

x is the slots in the motor case just like on EFV14

Coils A B and the armature are powered and are in attraction. The motor does not spin.

Coils C and D are the outputs and will need to be adjusted either advanced or retarded to cause the rotor to turn. These coils must be loaded with a low impedance load or the motor does not turn.

I could say that this is an energizer and not a motor as all the motoring action is caused by the generator coils.

There are in effect two magnetic circuits. If you don't understand please ask.

[wantomake]

I agree

Most armatures are Lap wound. I believe the Lockridge was Wave wound.

You will need to adjust the field coils a little so if you slot the mounting holes this will allow for that.

Yes its a challenge. There is no information about the original device and the only information we have is what JB released about an attempted reconstruction. The stage we are at now is our original work which may or may not be how the Lockridge really was. The truth is my research seems to confirm that the lockridge was real. There are many paths to take on this but we are narrowing it down.

Thanks mbrown,
Ok, wave wound it is. I'm trying to send for the wire now.

Yes the coils will need to be adjusted and there's not much room to adjust inside the casing. That's why this is taking me so long, I'm making each part and testing as I go.

No, we are alone it appears. And all of the searching hasn't turned up one piece of information in any language, other than JB and PL.

But I've worn out those vids trying to take as many notes as possible.

Warm regards and hope your research goes well,
wantomake

[mbrownn]

Most armatures are Lap wound. I believe the Lockridge was Wave wound.

You will need to adjust the field coils a little so if you slot the mounting holes this will allow for that.

Yes its a challenge. There is no information about the original device and the only information we have is what JB released about an attempted reconstruction. The stage we are at now is our original work which may or may not be how the Lockridge really was. The truth is my research seems to confirm that the lockridge was real. There are many paths to take on this but we are narrowing it down.

[wantomake]

Good progress

Yes keep notes, I want this info out.

We are using a delco remey 4 pole generator and also a 4 pole starter motor.

The current draw is huge on a starter due to the absence of BEMF so it has to be rewound, as does the armature.

The generator using standard coils can exceed 30A at 8v input.

I think we have the field coil geometry figured, the tests earlier in this thread confirmed the armature winding. So all we have to do is figure the number of turns and impedance of the triflar as the feed choke and we will be well on the way to getting a working device.

Thanks mbrown,
I also have a 1950's delco remy generator 2 pole that is very hard to get around here. Will add the motor field coils to it.

Are you referring to lap or wave windings discussed earlier? Cause I'm in process of winding the armature. I will go back and re-read that. Not sure yet on geometry of the field coils yet. Will probably make slots around the case to be able to move the fields around some. Really not much space to do that.

The balance of impedance, resonance, motor and generator and all is a challenge. True but fun with experimenting.

Experimenting,
wantomake

[Blargus]

Thanks mbrown, sounds like there's a lot going on. Was hoping I would get the reallybigfast spike on the recovery, or at least be pretty sure that the recovery side was doing what it is supposed to do. I'm hoping it's okay as is, I'll keep at it!

Mike

Top: Run side
Bottom: Recovery side

[mbrownn]

Yes keep notes, I want this info out.

We are using a delco remey 4 pole generator and also a 4 pole starter motor.

The current draw is huge on a starter due to the absence of BEMF so it has to be rewound, as does the armature.

The generator using standard coils can exceed 30A at 8v input.

I think we have the field coil geometry figured, the tests earlier in this thread confirmed the armature winding. So all we have to do is figure the number of turns and impedance of the triflar as the feed choke and we will be well on the way to getting a working device.

[wantomake]

Great reply

Thanks mbrown,

I agree with you on the transformer action. And that the trifilar coil was the power source for the motor.

Are you still testing with the universal motor or are you using an older generator or something of the sort?

Yes, I'll be testing all the "parts" of this unit and how they affect each other. That is how I learn and can understand each working part of this project.

There are many questions as I go through each test and do appreciate your knowledge and help.

It is a slow process but a lot of fun and exciting,
wantomake
edit: If ok I do keep many notes and have copied your last post.

[mbrownn]

@Blargus On recovery

The interactions between the armature and the field magnets are very complex, there is a lot more going on than you think, especially if you use field coils. I am working on this currently.

Hiwater has had some very interesting results using field coils where we get a multiplication of the voltage that we think is caused by a transformer action and a changing inductance in the armature winding. The armature used was lap wound.

I believe that the armature should be wave wound in a fashion similar to Peters.

@wantomake

The trifilar coil is likely to be used as some sort of choke to supply the motor. The reason it is wrapped around the motor is to pre saturate the motor core before the pulse, this way we have less core losses from the other functions of transformer and motoring. It also has other functions but I have not got them all worked out yet.

I believe the capacitor was wrapped around the coil but Peter will know better.

Filing the brushes down to one segment width does seem to be a requirement.

In my opinion, to really make this work you need to start with a four pole motor with four field coils, this is how the unit JB appears to be.

The motor is not wired in a conventional fashion but appears normal, this is to reduce BEMF. In truth there is no motoring action from the motor field coils thus no BEMF . The motoring action comes from the generating coils There is acceleration under load due to transformer actions All the BEMF is in the generator coils, this BEMF is the generated current. There is a very complex transformer action between the motor coils, armature coils and generator. this transformer action can be made to add to the generated voltage.

Please ask me some questions about this

[Blargus]

Hi, wondered if anyone had thoughts about my zig zag rewound scooter motor. I've been looking at the running and recovery, the recovery looks like this:

at 19V:


Coming from the run batteries looks like this:




Wondering why there appears to be a radiant spike but going into run battery, not recovery battery. My brushes are spaced a little less than 1 commutator segment and the diodes I am using are in motor NTE 598 600V 8A ultra fast and on recovery batteries UF 804 same specs I think. I have recovery side diode on a clip lead going to recovery battery positive. Highest I can go right now is about 34V, still notice the spike there, maybe if I go faster, things will change?

Anyway thanks, I'm not too picky right now I'm just glad it runs well!

Michael Swanson

[wantomake]

Hi guys.

I saw my friend Henry this Sunday and we talked a bit about the self-running generator "Lockridge device".
You have to remember that he was born in 1938 so he was only eight years old in 1945.
They had these in underground bunkers just for lighting.
He did not interact with the machine but he remembers clearly that the device was started by hand with a pull cord. Then the device would accelerate slowly , he does'nt know the speed but he says it was running possibly between 1000 to 3000 rpm and would hear a clicking sound , not fast but steady.Then they switched the lights on.

Not a lot of help but he confirms "it did work"

Wish I could help more.

Robert

Thanks Robert,

I know this is an old post but thanks,

I think the Lockridge device did have an external switching device or a relay to control the charging or discharge of the large capacitor involved in the circuit. Robert49 friend stated he heard a "clicking" sound from the machine.

Not sure, just bring up a possibility.

I'm still trying to replicate this device with a 1950's generator that:
1. the slots are cut down the sides of stator
2. the rotor is stripped and waiting new windings
3. commutators and brushes in hand

Now testing trifilar coils and like the results so far.

Questions to all,

1. Was the capacitor wrapped around the coil or was it separate?
2. Was there four brushes filled down really flat to just touch one segment at a time?
3. Is J. Bedini going to make any more videos on this machine?

Yes, I've watched/studied all the vids and books and such. Just need a little help here and there.

Thanks,
wantomake

[Blargus]

Ah thanks a lot Peter/Dr. Lindemann! I tried external diodes but not that! I really liked your lecture and also when you shared your permanent magnet DC arrangement . Thanks so much! A lot of the links from that person that would not listen to you guys seem to be dead...maybe "high winds do not last all day." I'll keep at it!

Thanks again,

Mike Swanson

Update: It runs now and I am getting recovery @ 12V. And we're off!

[Peter Lindemann]

Need Diodes on the rotor

Blargus,

Please go back and look at Matthew's modifications for this motor. He ran into this situation as well, and solved it with some diodes in the rotor windings, I think.

Before his ideas were hi-jacked by one of the other people in the thread (name withheld) there was a lot of excitement about this project, and his initial tests were showing significant benefits.

I'm glad to see you picking this up again.

Peter