An open question about SG pulse motors

[tecknomancer]

The VMG is a project, zeropointfuel has been working on for for some time, I just recently completely reworked the design I have included a link to a (VMG video) that can explain what is happening. I will try to explain it in some detail,the motor in its current configuration the amperage begins to climb as soon as the pulse motor is started it quickly reaches 7 to 8 amps, the rheostat adjustment is functioning properly it will increase the amperage even more if I adjust resistive level of the trigger circuit and this high amperage issue happens at 12,24 and 36 volts. Before adding the induction generator and stainless steel magnet retaining covers the motor worked like a conventional SG pulse motor it would easily operate in the range of 500 milliamps to a few amps without any issues and the motor still had plenty of torque and easily charged the second set of batteries. I have been over the circuitry and haven't found any issues yet.In the rebuild I did have to remove the coils and re-solder the connections when they were repositioned in the rebuild so I had considered some random short could be causing this issue I was unable to find any, I have only had the motor up to 800 RPM due to the high amp readings induction generator kicks right in and starts charging even at those low rpm's. But at only up to three or 4 volts so it's not generating load on the pulse motor, so drag from the generator is not the problem and none of the chips or wires are super heating so at this point I'm at a loss, I spent the last few days trying to resolve it and I thought I would ask is smartest forum on the web if anyone in here might have experienced a similar issues with their SG pulse motor, please understand this is not normal for this motor high amperage was never an issue before the rebuild, normally I don't ask for help on these kinds of issues I try to solve it myself. I know if anyone would have the answer it would be someone in here.Thanks in advance for any insights into this problem.

Here's a reference link to videos before the rebuild.



My next step is to ensure the .09 ohms of the individual coils is consistent, I had considered that I could have nicked the wire and created a shorter path but beyond that I am completely stumped.

[citfta]

Possible problem

Can you explain a little more about the stainless steel magnet covers? If I am understanding what you mean you have changed the covers holding the magnets down. Is this correct? If you have done that I believe that explains your problem. Although stainless steel is not normally attracted to a magnet it will have a very detrimental affect on a magnetic field. The Bedini SSG yahoo group warn over and over to not have any stainless steel anywhere near a SSG. Hope this helps some.

Good luck, Carroll

[Joit]

Hi,
well i try it, to explain :P

I do play with some bigger Wire around too, and your high Current only can come from, what the Transitor will switch.

Since you have a Bifilar Coil, where one Coil is the Trigger,
you can create a lot of Flux at the trigger Coil, what let the Transitor wide open.
In case you use a 2n3055, this one can switch up to 20 Ah at E and C or more,
the Base can handle about 7Ah, but not to much Voltage.

I used very tiny Wire for the trigger and wrapped big Wire around it,
usually only the Magnets from the Rotor triggers the Trigger Coil,
but with this additional thick Wire, it did influence the Trigger more then the Magnet did.
That way i burned a few Transistors, because the small wire induced beside more Amperage
high Voltage in it too, it did act like a HV Transformer.
But the induced Power into the Triggercoils was significant higher,
as only from the Rotor alone, and still is, because i do have a similar Setup now.

At the first View at all, i would say, it is the Field from the Generator
what mix up with your Bifilar Coils, and induce there a higher Impuls,
as what you usually get, but a Circuit would maybe usefull too.
I would try to take a loose thinner Coil for the Trigger,
and hold it anywhere beside the Rotor, and only trigger the Circuit
with this one, to see, if it still draws that much Amps.

[TanTric]

...

i think your problem might be the iron in front of the magnets!

the voltage that you show "output volts" and "gen output", are values on load? or without load?

good luck

[tecknomancer]

stainless steel covers

Can you explain a little more about the stainless steel magnet covers? If I am understanding what you mean you have changed the covers holding the magnets down. Is this correct? If you have done that I believe that explains your problem. Although stainless steel is not normally attracted to a magnet it will have a very detrimental affect on a magnetic field. The Bedini SSG yahoo group warn over and over to not have any stainless steel anywhere near a SSG. Hope this helps some.

Good luck, Carroll

yes I changed the covers from nylon to stainless steel in the rebuild
thanks that was my fear but never looked at the Bedini SSG yahoo group I will check it out and let you know if that is the case

[tecknomancer]

Hi,
well i try it, to explain :P

I do play with some bigger Wire around too, and your high Current only can come from, what the Transitor will switch.

Since you have a Bifilar Coil, where one Coil is the Trigger,
you can create a lot of Flux at the trigger Coil, what let the Transitor wide open.
In case you use a 2n3055, this one can switch up to 20 Ah at E and C or more,
the Base can handle about 7Ah, but not to much Voltage.

I used very tiny Wire for the trigger and wrapped big Wire around it,
usually only the Magnets from the Rotor triggers the Trigger Coil,
but with this additional thick Wire, it did influence the Trigger more then the Magnet did.
That way i burned a few Transistors, because the small wire induced beside more Amperage
high Voltage in it too, it did act like a HV Transformer.
But the induced Power into the Triggercoils was significant higher,
as only from the Rotor alone, and still is, because i do have a similar Setup now.

At the first View at all, i would say, it is the Field from the Generator
what mix up with your Bifilar Coils, and induce there a higher Impuls,
as what you usually get, but a Circuit would maybe usefull too.
I would try to take a loose thinner Coil for the Trigger,
and hold it anywhere beside the Rotor, and only trigger the Circuit
with this one, to see, if it still draws that much Amps.

I have a vary small trigger wire its as small as it can be the chips are SC5101 NPN rated at 160V 12A and work well the coils are quadfilar and the wire did not change in the rework so not it thanks though

[tecknomancer]

i think your problem might be the iron in front of the magnets!

the voltage that you show "output volts" and "gen output", are values on load? or without load?

good luck

the covers are stainless steel not iron, and there is not the load the amps start climbing at the start I even ran the motor wit the gen open no change thank for you input

[ren]

Can you explain a little more about the stainless steel magnet covers? If I am understanding what you mean you have changed the covers holding the magnets down. Is this correct? If you have done that I believe that explains your problem. Although stainless steel is not normally attracted to a magnet it will have a very detrimental affect on a magnetic field. The Bedini SSG yahoo group warn over and over to not have any stainless steel anywhere near a SSG. Hope this helps some.

Good luck, Carroll

Hi Carroll,

Stainless steel is not ideal. However I have used it (out of necessity) here:
YouTube - 120v Bedini monopole

and it still works fine.


Teckno, any load attached to the shaft which actively slows its rotational rate will make it hard for the rotor to get up into its sweet spots. I put an oversized flywheel on one of my builds and it just could not get up to speed.

I think you need to check all your transistors, by disconnecting them ALL and connecting one at a time to make sure you havent blown one. I have done this countless times and your symptoms sound similar to a blown tranny. If that doesnt solve your problem I would remove mechanical drag from the machine (your induction generator) and see if this helps.

Regards

[tecknomancer]

Hi Carroll,

Stainless steel is not ideal. However I have used it (out of necessity) here:
YouTube - 120v Bedini monopole

and it still works fine.


Teckno, any load attached to the shaft which actively slows its rotational rate will make it hard for the rotor to get up into its sweet spots. I put an oversized flywheel on one of my builds and it just could not get up to speed.

I think you need to check all your transistors, by disconnecting them ALL and connecting one at a time to make sure you havent blown one. I have done this countless times and your symptoms sound similar to a blown tranny. If that doesnt solve your problem I would remove mechanical drag from the machine (your induction generator) and see if this helps.

Regards

thanks I did disconnect the load but it did not change the draw. usually if I blow a chip on #18 the amps jump straight up above 10 amps and the sound the motor makes changes, but all the positives are connected to a screw panel so i can pull one wire at a time and disable one chip at a time. so I will try it, that would be a freaky blown chip but it wouldn't be the first time it acted weird with a blown chip. I could not find anything about the stainless steel as retaining covers yet But I will explore it fully before scraping about 3 days worth of fabrication work on the covers Thanks and great job on your motor

[ren]

If you haven't yet check all your resistances (actually measure them if possible, look for any burnt ones) especially your pot. Measure it as you sweep the full turn, check for any dead spots.

Regards

[smw1998a]

Hello Teknomancer,
Are your coils collapsing fast enough?

Regards Lee...

[tecknomancer]

coils collapsing fast enough?

Hello Teknomancer,
Are your coils collapsing fast enough?

Regards Lee...

That would make this amp draw I'm seeing, but this motor is reworked from perfectly working SG motor. Unless something new is effecting the trigger time it should the same as before, it's a real head scratcher

thanks any thoughts on what would do that

[tecknomancer]

especially your pot

If you haven't yet check all your resistances (actually measure them if possible, look for any burnt ones). Measure it as you sweep the full turn, check for any dead spots.

Regards

yea I checked the rheostat its fine the range is 100 ohms its all the way down and at 12 volts it's adjustable but even with it down at the start the amps still rise quickly I will be checking the coils tonight

[smw1998a]

That would make this amp draw I'm seeing, but this motor is reworked from perfectly working SG motor. Unless something new is effecting the trigger time it should the same as before, it's a real head scratcher

thanks any thoughts on what would do that

Hi,
It's difficult without a full schematic. Where are you sending the energy of the field collapse? Your sinking a lot of current into those coils and it has to go somewhere if things are not at melting point in a short time, how and where is the energy being dissipated I wonder, where is the excessive heat building up. 8 amps at 36v is 288 watts. Your coil cores should get hot very quickly unless the energy is converted elsewhere, possibly the generator.

Regards Lee...

[tecknomancer]

Where are you sending the energy

Hi,
It's difficult without a full schematic. Where are you sending the energy of the field collapse? Your sinking a lot of current into those coils and it has to go somewhere if things are not at melting point in a short time, how and where is the energy being dissipated I wonder, where is the excessive heat building up. 8 amps at 36v is 288 watts. Your coil cores should get hot very quickly unless the energy is converted elsewhere, possibly the generator.

Regards Lee...

The output is going to a 44Ah 12 v telecom battery all of the collapse seems to be going to the output battery its hard to tell because it climbing when I'm checking the output but its about the same give or take an amp it's all heavy duty stuff I can only run it for a few min before I start freaking out out but nothing is even warm. possibly the generator? not sure on that it's not connected in any way to the circuit

maybe I found a way to dump back into the aether

thanks for you input