Simple to make Hilden-Brand style motor

[gyulasun]

Hi Ron,

Very good progress.

I make a notice for myself: any time I am to make coils for such pulsed motors, I will make several taps on them to test the best inductance for a particular job.
One more thing I would do: I would remove a single magnet from the several stacked ones and repeat the tests with the missing magnet when there is airgap in its place, then I would fill the airgap with a ferromagnetic piece, all this to be able to control the amount of the flux of the magnets somehow.

Thanks for sharing.
Gyula

[i_ron]

Hi Ron,

Very good progress.

I make a notice for myself: any time I am to make coils for such pulsed motors, I will make several taps on them to test the best inductance for a particular job.
One more thing I would do: I would remove a single magnet from the several stacked ones and repeat the tests with the missing magnet when there is airgap in its place, then I would fill the airgap with a ferromagnetic piece, all this to be able to control the amount of the flux of the magnets somehow.

Thanks for sharing.
Gyula

Thanks Gyula,

A couple of good tips... I am usually not that organized though, lol
I had cut down the magnet stack to six on the motor from the eight that I had on for the initial test vid. The reasoning for this from the Genesis patent which shows such small magnets. Whereas Jack used monster magnets... so just don't know at this time....

I filled in the open spaces on the rotor with some bits of teak, it has cut down on the windage and now runs at 122 RPM.  The next move will be to get the coil/core ready for the other end.

Ron

[rave154]

Ron,

its interesting that sending the spike to the RG coils produces an improvement, it reminds me of gotoluc's tests where he used a diode to send the spike back into the coil that made the spike in the first place, using a magnet on top of the coil to "measure" the strength of the field he got a significant increase when sending the spike back into the coil

[i_ron]

Ron,

its interesting that sending the spike to the RG coils produces an improvement, it reminds me of gotoluc's tests where he used a diode to send the spike back into the coil that made the spike in the first place, using a magnet on top of the coil to "measure" the strength of the field he got a significant increase when sending the spike back into the coil

Rave,

I like to watch gotoluc's vids, he has some good stuff, to make you think, on there.

Now, I have come back to this from pulse motor experiments, where the generated voltage is a major factor, so I was pleased with the lack of this "interference".

As you probably know, the diode across a relay coil shorts the spike back into the coil. Putting a resistor in line with the diode slows down the release and holds the relay engaged longer... which can be a problem, for the relay.

Edit:  I have lots of good theories, trouble is not all of them work out, lol

Ron

[Honk]

Great work. I like your build.

I have a question regarding efficiency. (The shaft torque seems kind of low)
Have you considered that using no magnets the efficiency is e'g 50% and adding the magnets gives you a slight efficiency increase.
In that case it's an improvement but not OU.

Don't forget that the needed coil firing voltage increases by speed. This happens in all moving fields, using magnets or not.
Can you measure the voltage increase as RPM increases? That will determine the final outcome of the motor as input = I x V.

It will also be interesting to see the measured shaft output vs electrical input when you have completed the motor.
I can send you an efficient three phase 750W generator when you have a fully working prototype motor.

Keep up the good work.