Discussion about the Lockridge Device

[citfta]

To add a little to the last post I would start out with 12 volts on the field and then slowly increase the voltage on the armature to 12 volts, While doing that notice the amount of torque generated even at pretty low amature voltage.  Then when you have reached 12 volts on the armature check the speed.  Then slowly lower the power to the field and watch the speed increase.  As long as the armature keeps increasing in speed it will also be increasing the back EMF to prevent high current in the armature and burning brushes.

[Ufopolitics]

To add a little to the last post I would start out with 12 volts on the field and then slowly increase the voltage on the armature to 12 volts, While doing that notice the amount of torque generated even at pretty low amature voltage.  Then when you have reached 12 volts on the armature check the speed.  Then slowly lower the power to the field and watch the speed increase.  As long as the armature keeps increasing in speed it will also be increasing the back EMF to prevent high current in the armature and burning brushes.

Hello Carroll,

Ok, here is the video where I did the test as you suggested...

Like I have explained on video, I only took fields to 7 Volts and around 4.0 A, because at 12V amps went to 7A...which is too high for this PSU, that I am using the front output where it only goes to 5A Max.

I conducted a prior test at 12V and Fields PSU suddenly dropped amperage (guess an internal protection) to 0.02A and shaft went sky high!!

On 7V the test went on smoothly.

And yes, it is demonstrated your point clearly, that as I lowered power to fields it increased RPM's.

Thanks for all your guidance Carroll

Regards

Ufopolitics

[Ufopolitics]

Hello All,

Here is another Test, same as prior one, but this time I am using 12V Supply to Field Coils.

This time I was able to connect the back terminals of PSU, which gives me 15 Amps Max, so I can conduct the test at the requested 12V by Citfta (Carroll) for Field Coils Input.

Regards

Ufopolitics

[hiwater]

How many more volts and Amps do we need to add for motor to spin at 5000 RPM's

From working with the GM style. With out power going thru the feild coils. Just to the pos brush thru the armature and neg brush to ground. These shouldnt take more than one half amp to run as a motor. With just 12 volts about 3000 rpm.  With 18 - 22 volts 4200-5000 rpm.

Another thing with this motor. It performs different on different days. Another is that black tape on the feild coils for wrapping act likee a dielectric when running with ac. Not sure about DC.

What your doing there is a lot of food for thought.. Keeps a person thinking. Thanks Curt.

[citfta]

Hi Ufo,

Thanks so much for doing those tests.  Hopefully the videos will help others understand some of the characteristics of DC motors.  And hopefully give some things to think about.  I am going to be really busy the rest of the week.  But I will be spending a lot of my time thinking about this project.  I have a lot of driving to do so I'll have some time to think more about all this.

Take care,
Carroll