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Author Topic: My Kundel motor replication with ardiuno  (Read 3696 times)

Offline synchro1

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Re: My Kundel motor replication with ardiuno
« Reply #45 on: January 01, 2022, 11:33:32 PM »
Spool and spline diametric piston could power from a micro actuator:

Offline synchro1

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Re: My Kundel motor replication with ardiuno
« Reply #46 on: January 02, 2022, 10:17:00 PM »
Nesting this plastic ball bearing spline inside a collar bearing mounted in the bore hole of a spool would add precision balance to the gear. These two types of ceramic bearings would seat together in one end hole of the spool core. A 3d printed spool could recess both bearings in the spool wall along with arc segment press fitted holes. Hypersonic spin velocity would be achievable with nanopositioning of the piston.

Offline floodrod

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Re: My Kundel motor replication with ardiuno
« Reply #47 on: January 22, 2022, 04:47:12 AM »
I got my magnets in that almost match Kundels... 

I wanted to build the machine a little differently.  No need for such long linear rods, as the throw is very small. And I wanted to design it so I can experiment with sliding magnetic gain concept instead of a voice coil.  And if that don't work well, then i can try Flynn's parallel path concept instead.  Eitherway- I am not thrilled about the voice coil.

My 3d printer settings were not correct and the parts came out crappy.  But it should work for testing..  If it looks promising, I can always reprint in good quality.


Offline onepower

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Re: My Kundel motor replication with ardiuno
« Reply #48 on: January 22, 2022, 05:14:14 AM »
floodrod
This is the kind of fast prototyping 3D printers excel at and I use my Prusa clone for this kind of stuff all the time. I haven't looked at the Kundel motor to deeply but built/tested the solid state version found in the forums.

Have you looked at the John Ecklin patent US3879622A?. I think this may be doable and may relate to the Wesley Gary effect as the setup looks similar.

Good luck with you research
AC

Offline synchro1

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Re: My Kundel motor replication with ardiuno
« Reply #49 on: January 22, 2022, 01:37:41 PM »
Your design is very innovative and unique. Kundel's patents should not hamper the production of your new design it is so divergent. Eliminating the outrigger torsion guide rods and springs adds a huge advantage. Your project is a great idea. Nice find on the magnets. A piezo actuator can be run by Arduino to replace the voice coil. This helps solve the spline problem.

Offline floodrod

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Re: My Kundel motor replication with ardiuno
« Reply #50 on: January 22, 2022, 02:31:45 PM »
Onepower-  please post a link to this "solid state device" you speak of.  I would like to have a peek..  And thanks for the other patent number.  I do want to venture into the magnetic shielding concepts sooner or later.  And yes, the 3d printer makes so much easier and accurate. And of course less expensive.

Snycro-  thanks dude.  The new design seems to reciprocate much easier than the former.  The main advantage as I see, it allows me to try several different reciprocation drivers.  I can't resist the urge to rotate magnets past the reciprocator arm magnets to see if it will self-run. I know it's a pipe dream, but if the Kundel action has even a slight gain, and the sliding magnets has any sort of gain as research here suggests, working both these actions against each other seems like something I have to try :)

Offline synchro1

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Re: My Kundel motor replication with ardiuno
« Reply #51 on: January 22, 2022, 03:34:51 PM »
Onepower-  please post a link to this "solid state device" you speak of.  I would like to have a peek..  And thanks for the other patent number.  I do want to venture into the magnetic shielding concepts sooner or later.  And yes, the 3d printer makes so much easier and accurate. And of course less expensive.

Snycro-  thanks dude.  The new design seems to reciprocate much easier than the former.  The main advantage as I see, it allows me to try several different reciprocation drivers.  I can't resist the urge to rotate magnets past the reciprocator arm magnets to see if it will self-run. I know it's a pipe dream, but if the Kundel action has even a slight gain, and the sliding magnets has any sort of gain as research here suggests, working both these actions against each other seems like something I have to try :)


All the measurements tell us it should run itself by it's own power! I believe that you have a "State of the Art" advantage unavailable to other imaginative inventors. I think there is a real chance that you can make it work!

Offline floodrod

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Re: My Kundel motor replication with ardiuno
« Reply #52 on: January 22, 2022, 05:06:15 PM »

All the measurements tell us it should run itself by it's own power! I believe that you have a "State of the Art" advantage unavailable to other imaginative inventors. I think there is a real chance that you can make it work!

I am re-printing the parts.  The diametric reciprocator ring magnets were too close together to squeeze the axle arc discs with nuts in and have any room for a throw.  And it gives me a chance to print this with decent quality.  Last thing I want to do is glue expensive magnets into a crappy print.

Regarding the "State of the art" technology-  the Ender 3 3d printer goes for $189 on amazon..  (which is equivalent to my off-brand model). A few hours learning Tinkercad and Cura  (both free), anyone can be up and going in a day or two, and probably cheaper than what they spend on fabricating / sourcing strange parts.  With this hobby, I can't see doing it without a 3d printer.

Offline floodrod

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Re: My Kundel motor replication with ardiuno
« Reply #53 on: January 25, 2022, 01:38:30 AM »
First test attempted today..  It want's to go, but not quite. See in action here-  https://www.youtube.com/watch?v=2t3NRSMy0jk

I think the inner propellers are too weak.  It improved once I added more magnets to them..  The new half circle magnets seem too small and don't create enough torque.

Next step is to design better inner propellers that create more torque.


Offline floodrod

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Re: My Kundel motor replication with ardiuno
« Reply #54 on: January 25, 2022, 12:51:05 PM »
I spent a few hours looking back on my previous working kundel models and reviewed my notes, which is leading me to another part which needs modification.

The best results came with a latching hall sensor, or when a non latching hall sensor was triggered with magnets a full 180 degrees around. 
Same thing with the electromagnet build.  It works awesomely when each pulse is held for 180 degrees of the rotation, but starts to lose massive efficiency when I started shortening the pulses. 

Basically, giving the reciprocator a short quick push was not enough. Each throw needed to hold that position until 1/2 rotation (or close to) was complete to obtain the best results.

Comparing that info to this design- I see my sliding propeller is only activating the throw somewhere under 1/3 of the half revolution throw required. (between 45-55 degrees out of 180) , thus releasing pressure on the inner propellers before they complete their 180 degree flip.

I am not saying this design will work, but this needs to be addressed next.