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Author Topic: Utron research  (Read 45941 times)

Cherryman

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Re: Utron research
« Reply #45 on: February 15, 2017, 05:25:40 PM »
Well...  it kind of itched that the little engine was not 100% wood...


So i fixed that:


100% wooden electrostatic engine :  https://youtu.be/4UpHnhIcuJg


A worlds first? 

Cherryman

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Re: Utron research
« Reply #46 on: February 23, 2017, 11:02:53 PM »
Some high speed tests...


Not much to add, although it's annoying it keeps want to take off...


https://youtu.be/x6VazksH0T4

Cherryman

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Re: Utron research
« Reply #47 on: February 25, 2017, 10:30:59 AM »
Any Arduino wizzards around ?


I have a problem with getting an optical RPM counter to work properly.


I have an optical sensor ( see PDF )


Connected to my Arduino Mega
( Digital pin 2 )

But whatever i try..  I get some readings, but not consistent

I tried digital read and interrupts.


Anyone experienced know if this hardware and setup could actually work

Cherryman

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Re: Utron research
« Reply #48 on: February 25, 2017, 06:20:06 PM »
Well.. i made some progress.


Got the telemetry working, now i need a way to double check the a accuracy.


http://www.youtube.com/watch?v=lcHWNVpB3CM




sm0ky2

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Re: Utron research
« Reply #49 on: February 27, 2017, 05:29:51 AM »
 This may help you visualize what I was trying to say earlier




sm0ky2

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Re: Utron research
« Reply #50 on: February 27, 2017, 05:32:06 AM »
Each "step" should have more turns as you get smaller
There's an exact number, I don't have that info available
at the moment. But Tesla and Carr both write about it.


But hopefully this will give you a starting point for your tests.
The "square geometry" is important
'Slopes' don't work very well

Cherryman

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Re: Utron research
« Reply #51 on: February 27, 2017, 08:47:12 AM »
Thanks smOkey,


I will keep that in mind and maybe try as well.
Is there a reason stepped coils work better as sloped ones? 






Cherryman

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Re: Utron research
« Reply #52 on: February 28, 2017, 03:06:59 PM »

Small update.
I improved my setup , added some bearings and i made a better motor setup.
Needs some more finetuning.



https://youtu.be/orNHhZZnTRY

Cherryman

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Re: Utron research
« Reply #53 on: February 28, 2017, 11:30:24 PM »
Some observation i made during all these tests:


Every time i speed up the rpm, the Utron wants to go up..


I know.. i know.. it's probably friction and resonance, vibration, dis-balance.. working the thing up...     But still...   8)


Had some problems with the alignment of all 4 bearings in line, I made them adjustable 2D , but tightening and the deviation of the wood makes also some 3D problems.,
I hate permanent bondings, due to i like fast switching of concepts and setups..   but after my bearing kept flying up ... i super glued them in place now. A sad day.
I put some superglue on the sides now..  Had some problems with the alignment of all 4 bearings, not easy!






sm0ky2

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Re: Utron research
« Reply #54 on: March 01, 2017, 02:15:48 PM »
Thanks smOkey,


I will keep that in mind and maybe try as well.
Is there a reason stepped coils work better as sloped ones?


The way Tesla discribed it, which was also echoed by Mr Carr,
Is that the induction of the larger loops is greater than in the
smaller loops, and adding more loops in the smaller dimension
balances this out to minimize losses in the step down.
Thus keeping the induction coefficient the same all the way down
the coil. This causes an increase in field strength ( density).


Having a sloped conical coil causes the change in induction to
exceed the change in field condensation, which weakens the field
in each progressively smaller loop.


I don't have the equations readily available,
But let's assume that 1/2 coil diameter requires
twice as many # of turns. By this analysis, you can see a
proportionality between the two, as inductance is equal.
(Like I said I don't have the equations, so it may not be
 as straightforward as this example).


Cherryman

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Re: Utron research
« Reply #55 on: March 02, 2017, 03:12:52 AM »
@ smOkey tnx, that helps!




@ all, a side step notice :


https://www.youtube.com/watch?v=QFFrh-FXE84

Cherryman

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Re: Utron research
« Reply #56 on: March 11, 2017, 07:53:17 PM »

Not much to report, but i made a little raw compilation of ongoing testing.


https://youtu.be/pTYHfqBDEKc

sm0ky2

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Re: Utron research
« Reply #57 on: March 13, 2017, 04:21:03 PM »
@ smOkey tnx, that helps!




@ all, a side step notice :


https://www.youtube.com/watch?v=QFFrh-FXE84


Induction polarizes the screw such that it forms a dipole
I mean to say, that there are two magnetic dipoles falling
through the tube.
This double- acting lenz/Lorentz induction shortens the
length of the counter-emf opposing the falling neos.


Think of it as being two magnets, one longer and weaker
than the other. Let's call the outer pole of the neo N,
and the outer pole of the screw S.
The junction between the 2 "magnets" is null and void to
the tube, as the flux is almost entirely pulled into each
magnet at the junction. So you have a S pole falling, inducing
a N field which opposes its' motion. Since the distance from S
pole to N-transition is greater than the distance from N pole to
S-transition, the induced emf in the aluminum tube is longer on
the leading (N) side.
This creates an attraction to the N end of the magnet at a distance
greater than that which induces the countering S pole - with respect
to the falling N pole of the magnet stack.


Because these are permanent magnets, we do not 'see' the internal
energy exchanges. However, if this were set up inside an electromagnetic
motor - we would find that the energy used to create the offset in the lenz
field, is equal to the change in acceleration caused by the offset.

sm0ky2

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Re: Utron research
« Reply #58 on: March 13, 2017, 09:54:43 PM »
In the same way that there is no real "gain" from the change in speed
of the falling magnets.


The field is diverted through the screw, changing the field of
the magnet on the screw-side.




sm0ky2

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Re: Utron research
« Reply #59 on: March 13, 2017, 10:22:18 PM »
i drew this little thing, in case anyone had a hard time following my textual description.

proportions are drawn out of scale, to clearly see the geometric structure of the coil.

the increasing # of turns per step-down is important.
without having the mathematics on-hand, the best approach may be
a direct measurement of resistance between first and last turn of each step.
each step should represent equivalent resistance to the step before and after it.
as well as the beginning and end steps of the conical coil.
and as such, inductance, and capacitance will also be likewise of equivalent proportions.
(assuming that each step of the conical coil is made of the same material)