Lockridge Device - Peter Lindemann

[Mark]

I just finished watching both videos and have located both the starter and the motor that Peter recomended.

Goreggie, I was wondering if you did an RPM test on the starter. I see that you mounted a larger pulley on it to generate a higher speed on the generator/motor. If so what was the free wheel speed? And have you run the starter to see what kind of speed it has while driving the generator in your current configuation? Also what size are your pulleys?

Looking forward to hearing more on your build. Good luck and I am interested in purchasing you end plates.

Thanks, Mark

[goreggie]

I just finished watching both videos and have located both the starter and the motor that Peter recomended.

Goreggie, I was wondering if you did an RPM test on the starter. I see that you mounted a larger pulley on it to generate a higher speed on the generator/motor. If so what was the free wheel speed? And have you run the starter to see what kind of speed it has while driving the generator in your current configuation? Also what size are your pulleys?

Looking forward to hearing more on your build. Good luck and I am interested in purchasing you end plates.

Thanks, Mark

Hi Mark, yes we ran a rpm test, the generator has a 1" wheel pulley the motor is 8" wheel pulley with mass. The test did run at 2995 RPMs giving us 261 volts out from the generator but its to early to know if this is correct Right now working on the commutator ...
It may be possible to use a SCR after all. The key is that once an SCR is triggered, it will continue to conduct until the current falls below a specific value. SCRs have sometimes been used in camera flash units to do just what is described: discharge a capacitor through a load.
The "commutator" serves to apply power to the motor at the right time, so that the magnetic fields are the correct polarity at the correct time.
In this case, when the motor is in the correct position the SCR (or other circuit) will fire and apply current to the motor windings. Once the capacitor is fully discharged, the SCR will turn off. If we use another driver, then the control circuit will determine when to turn off the current.
Note everything that happens on this end will be posted
God Bless All

[cwaugs]

Wayne I'm setting up the electronic's right now and if it works I will put the end bells up on the forum at a low cost OK Reggie

Sweet, that'd be cool. W

[Mark]

Goreggie

You have made great progress! Thanks for the info. I have played with the SCR discharge set ups with my solid state Bedini's. Hopefully you have better luck with them than me. I could get them to work great in some set ups but in others they would not shut off. I have only made 1 commutator before and it wasn't precision made. Good luck and I wish I could be there to help.

Mark

[Mark]

Wayne I'm setting up the electronic's right now and if it works I will put the end bells up on the forum at a low cost OK Reggie

Hi Goreggie

I purchased the starter today and was wondering what you would charge me for the end plates with the bearing installed. You can private message me or post here.

Thanks Mark

[goreggie]

Hi Goreggie

I purchased the starter today and was wondering what you would charge me for the end plates with the bearing installed. You can private message me or post here.

Thanks Mark

Hi Mark, should not be a problem getting you the end bell, I will check with Carl who cut it, today he was off tommorrow I'm off so by Monday I can reply OK I can tell you this the bearings were $2.00
Right Now I'm setting up two ways to control the firing of the motor, one electronic, the other with brushes Reggie:

[Mark]

Hey Goreggie

I was playing with my starter motor a little and it currently has quite a bit of resistance and doesn't free wheel very well and seems to draw a lot of current, I havent checked the free wheel current. I hope the new end caps with bearings will really free it up. I don't think these starter motors are very efficient in their stock configuration. I'm wondering if we'll need to rewind the stators with more turns of smaller wire. Does your motor free wheel fairly well?

I also charged a 250uf 250 volt cap up to 210 volts and discharged it into the motor and it didn't turn at all Hopefully with things freed up and the motor turning with a flywheel things will be different.

Hey Peter have you done any testing yet with the motor or generator? And do you have a time frame in mind as to when you will start to get involved with the build?

Mark

[Peter Lindemann]

My Goals for this Thread

Mark, and everyone else,

My goal is to help everyone here, who wants to, learn how to build a self-running system. That said, I do not have time to get involved with "the build" as you put it, because I am too busy working for a living.

What I would like to do is help you all understand what it will take to develop a working design. There are a lot of details that have not been worked out yet, and there is no reason to believe that "the group" here understands the science of what I presented in my lecture.

So we can all get going on the SAME PAGE, I would like everyone who wants to participate in this thread to write down on a piece of paper what your understanding and definition of BACK EMF is.

DO NOT POST YOUR ANSWER. Just write it down as best you can. I told the answer in the lecture, but I don't want early "posters" to influence others, for better or for worse. Then on Sunday night, everyone can post their answer without looking at anyone else's answer. That should give me a pretty clear idea of how people are thinking about this and what they have learned from my lecture so far.

I will figure out how to proceed after this.

Peter

[radiant1]

I totally understand it now

Peter
Mike and I watched both dvds last night stopping very often to discuss them.
I now totally under stand what BEMF is, where and why motors run best, where and why generators run best, why motor eficiancies given by manufactures are bogus, and how to run a motor in such a way as to increase torque and power both as the speed goes up.

Mike and I are going to make a Bob Teal type solenoid motor and have it run a toroid coil generator that has no lenz effect or drag under load. Should be a very efficiant combo.

I will answer the question more fully on Sunday.
Alan

[Fuel40]

Back EMF...

Mark, and everyone else,

My goal is to help everyone here, who wants to, learn how to build a self-running system. That said, I do not have time to get involved with "the build" as you put it, because I am too busy working for a living.

What I would like to do is help you all understand what it will take to develop a working design. There are a lot of details that have not been worked out yet, and there is no reason to believe that "the group" here understands the science of what I presented in my lecture.

So we can all get going on the SAME PAGE, I would like everyone who wants to participate in this thread to write down on a piece of paper what your understanding and definition of BACK EMF is.

DO NOT POST YOUR ANSWER. Just write it down as best you can. I told the answer in the lecture, but I don't want early "posters" to influence others, for better or for worse. Then on Sunday night, everyone can post their answer without looking at anyone else's answer. That should give me a pretty clear idea of how people are thinking about this and what they have learned from my lecture so far.

I will figure out how to proceed after this.

Peter

Good evening Peter-

Thank you, for your patience and dedication to educating us in regards to this technoloy. The following is my understanding of back EMF.

When a permanent magnet DC motor’s output shaft is mechanically rotated it spins the coil wound armature and generates voltage. Thus, if current is applied to a permanent magnet DC motor, the spinning armature generates voltage against the input current. Back EMF is the reverse direction generated voltage in a permanent magnet DC motor.

As well, effective armature current is determined by the applied input voltage minus the back EMF. Back EMF destroys the input energy of permanent magnet DC motors.

Finally, it is not possible to eliminate back EMF in commercially available permanent magnet DC motor architecture.

Regards,

Adam

[woopy]

Ding dong

Right midnight in Europe

Hi Peter

So my description

The BEMF is the electricity generated in the motor by the simple fact that the
magnets (or electrified windings ) are spinning through coils, and this totally independentaly of the current actuacting the motor fonction.

So the BEMF is a POSITIVE ENERGETIC PRODUCT but the aim of which, AS
A LUCIFER, is to work against the motor action .

good luck at all

Laurent

[dragon]

I posted this in another thread but I believe it applies here as well and is based on Mr. Lindemans DVD...

" A motor is a current device, and a generator is a voltage device. The motor is held back because of the generation of a reverse voltage, the generator requires force to turn because of the reverse motor function caused by current. In order to remove Lenz from the picture the motor needs to be run on pure current and the generator should produce pure voltage. Thus remove the generator from the motor and remove the motor from the generator. From there it's a matter of storing the high voltage from the generator then converting it to current for use in the motor."
________
Vaporize reviews

[radiant1]

back EMF

Conventional motors due to the geometry of thier parts awlays run both as a motor and a generator. The motor effect works best at start up and low speed but the generator works best at highest speed. The induced generator voltage is called back EMF. Back EMF goes up as the speed goes up and torque goes down if the motor is run with a constant voltage. Torque is highest at start up and power peaks at the motors 100% rating when run with constant voltage. This condition can be overcome by pulsing the motor with high voltages at 1 to 10 percent duty cycle. Then the torque and power will both keep going up as the speed goes up. For the lockridge device the motor should be pulsed to keep it in "start up running conditions" and the gernerator run at it's highest speed.
Alan

[citfta]

Bemf

Back EMF is the voltage generated by the armature windings moving through the magnetic field created by the current flowing through the field windings or the magnetic field of permanent magnet field stator. If the field is weakened the armature current will increase because of the weaker BEMF. The increase in current will cause the armature to increase in speed. The armature will increase in speed until such point is reached where the BEMF again balances out the Forward EMF minus windage losses and friction losses and whatever load is applied to the motor. Large DC motors have protective circuitry to shut off the armature current if there is a sudden loss of field current. If this protection was not there the armature current could reach extremely high levels and the motor could accelerate until it flew apart.


As I understand from Peter's talk our goal with the Lockridge device is to remove the BEMF as much as possible by pulsing the drive motor with very high current but only for a very short period of time. By using a flywheel to store the pulsing energy coming from the motor being pulsed we are able maintain the speed we need for the generator side of our device while at the same time using a small amount of average current for our motor.

That was my 2 cents worth, Carroll

[Mark]

In simple laymens terms BACK EMF is the generator action voltage produced in most motors which reduces the effective input voltage. Back EMF increases as speed increase.