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Author Topic: Utron research  (Read 13109 times)

Offline sm0ky2

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Re: Utron research
« Reply #60 on: March 13, 2017, 10:35:48 PM »
the equation included such variables as:

length of wire, diameter of coil, # of turns, permeability of free space,
 as well as a materials constant of the wire (copper in most cases?)
intended to give some value (perhaps inductance?) which would then remain
constant throughout the coil, the only factor being changed was the diameter
and the # of turns, which derived the dimension and # of turns for the next appropriate
step-down from the previous radius, following the basic conical dimensions.
and, depending on the size, there was mention of possibly requiring a "gap" between steps
in order to maintain the perfect ratios, when stepping down to the next set of coils.
I took this to mean, that when calculating the diameter of the next step, it may not be
the diameter of the conical structure, immediately adjacent to the end of the previous step.
and for structural purposes, the next step of the coil began at the point on the cone that matched
the diameter of the coil turns. (some # of mm gap in most small cases)

If anyone has information regarding this equation, and can provide it here, it would be of great value.

I seem to remember Tesla's use of this being buried unfindably in the middle of a very long treatise on
coils and induction, resonance, capacitance, and general electronics physics, cryptically worded in Teslonian fashion.
the source of which, I am not sure.

simple trial-and-error with a multimeter should be able to narrow it down, using the resistance of the coils.



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Re: Utron research
« Reply #60 on: March 13, 2017, 10:35:48 PM »

Offline Cherryman

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Will plasma conduct?
« Reply #61 on: March 14, 2017, 05:38:43 PM »
I was wondering if i could eliminate brushes by using a high voltage spark as the brushes for a low voltage current.


https://youtu.be/anlrrbpEujU


Warning: Boring Video!

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Offline Cherryman

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Re: Utron research
« Reply #62 on: March 14, 2017, 05:42:11 PM »
@smOkey


tnx for your input!


Trial and error.. that sounds like me : )

Offline Cherryman

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Re: Utron research
« Reply #63 on: March 14, 2017, 08:37:37 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)


It does reminds me a little of the Muller coil design


https://www.youtube.com/watch?v=yGTfGFtcRiM


Offline Cherryman

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Re: Utron research
« Reply #64 on: March 20, 2017, 07:16:55 PM »
Some renders








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Re: Utron research
« Reply #64 on: March 20, 2017, 07:16:55 PM »
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Offline Cherryman

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Melting a Utron
« Reply #65 on: March 28, 2017, 02:35:40 AM »
Now I decided on the design, its time to make some solid ones.


I decided on casting them in aluminium. As I have never done that before, i chewed up some youtubes and mocked up a proof of concept in the garden today.
I'm actually quit happy with the results.


Not a finished product, but a decent enough proof of concept for me! : )


Anyway, here is my first attempt in melting and casting molten aluminium:


https://youtu.be/qMut-4mFCxU

Offline Grumage

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Re: Utron research
« Reply #66 on: March 28, 2017, 03:26:02 PM »
Dear Cherryman.

Your last video took me way back in time!

I ran a successful foundry and precision engineering business for nigh on 30 years.

http://www.alynfoundry.co.uk/

I would suggest using Propane gas and a large torch for heating and try to find larger pieces of Aluminium scrap to melt. Using thin sections of scrap makes more " Dross " as the metal prefers to oxidise rather than melt.

Regarding your moulds you could use a metal die for such a simple shape ( if you have a Lathe ) of course. If your sand is too wet you will get steam forming that will ruin the surface finish.

Drop me a PM if you'd like to learn more.

Kind regards, Graham.

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Re: Utron research
« Reply #66 on: March 28, 2017, 03:26:02 PM »
Sponsored links:




Offline Cherryman

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Re: Utron research
« Reply #67 on: March 28, 2017, 04:28:08 PM »
Dear Cherryman.

Your last video took me way back in time!

I ran a successful foundry and precision engineering business for nigh on 30 years.

http://www.alynfoundry.co.uk/

I would suggest using Propane gas and a large torch for heating and try to find larger pieces of Aluminium scrap to melt. Using thin sections of scrap makes more " Dross " as the metal prefers to oxidise rather than melt.

Regarding your moulds you could use a metal die for such a simple shape ( if you have a Lathe ) of course. If your sand is too wet you will get steam forming that will ruin the surface finish.

Drop me a PM if you'd like to learn more.

Kind regards, Graham.


Graham, many thanks for your suggestions and offer.


I already did this morning a second try, with some more heat and things learnt from yesterday.


My sand kinda works ok.  I siffed some birdcage sand and with just a little moist it works very well for the simpel set up, rather nice smooth surface, and more stable as expected.
I had more problems with indeed oxidation and... Unfortunately my crucible melted also and i lost half of my alu in the fire.  My next crucible will be of stainless steel instead of a coffee can ; )
I do not have acces to a lathe or other expensive tools, but i'm also happy to try it the "bush" way and learn along.


I do have a question, I added some salt as "flux"  i heard somewhere it helps the liquid being more fluent. is that a good idear ?


Anyway thank you for you offer and expertise.


Here is a little overview of this mornings experimentation.


With respect RK


PS. Nice website and craftsmanship, you must be horrified to see an amateur plowing along, but i have to say it's fun.  Fire, molten metals.. creating stuff.

https://www.youtube.com/watch?v=sGi8Y95wsto


Here is a picture of the first and second.. It ain't much.. But I see improvement : )

Offline Grumage

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Re: Utron research
« Reply #68 on: March 28, 2017, 06:55:46 PM »

I do have a question, I added some salt as "flux"  i heard somewhere it helps the liquid being more fluent. is that a good idear ?

PS. Nice website and craftsmanship, you must be horrified to see an amateur plowing along, but i have to say it's fun.  Fire, molten metals.. creating stuff.

https://www.youtube.com/watch?v=sGi8Y95wsto


Here is a picture of the first and second.. It ain't much.. But I see improvement : )

Dear Cherryman.

Hmmm...  Salt not sure about that. A proprietary covering flux would be better but if this is just for a few castings the cost wouldn't be worth it. We used to use a " de gasser " tablet " rabbled " into the melt prior to pouring, this generated Chlorine gas which combined with the absorbed gasses reducing the risk of porosity. Might be the Salt actually de gasses ?

As to your endeavours, on the contrary. It's exactly the same as I over 40 years ago. I made so many mistakes to start with but with each subsequent cast the failures became fewer and fewer.

Cheers Graham.   

Offline Grumage

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Re: Utron research
« Reply #69 on: March 29, 2017, 04:06:33 PM »
The title says it all !!


https://www.youtube.com/watch?v=l6s4Bh0ggVM

                                     :)

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Re: Utron research
« Reply #69 on: March 29, 2017, 04:06:33 PM »
Sponsored links:




Offline Cherryman

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Re: Utron research
« Reply #70 on: March 29, 2017, 07:07:17 PM »
@Graham,


Woohaa! That's not fair! You make it look wayyyy to simple!! : )


I have to admit a torch looks mighty handy! , Although I do like the charcoal burning, this torch thing  seems a bit more easy and controllable.


Lol : I see the Video is of today..  Did I re-spark your casting blood?  I hope so!


Cheers Rob.

Offline Cherryman

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Re: Utron research
« Reply #71 on: May 17, 2017, 09:50:19 AM »


Offline Cherryman

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Re: Utron research
« Reply #72 on: August 09, 2017, 04:51:44 PM »
Did not have much time, but the Solid Utron's are almost finished!


(Not a render ; )




Offline Cherryman

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Re: Utron research
« Reply #73 on: November 12, 2017, 01:42:05 PM »
Some minor tests.


Testing the conductive properties of my Utron design. Half and whole.


https://www.youtube.com/watch?v=cMm0y8JzGUo

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