Lords of the Ring

[Rosphere]

...of 4 inch diameter sched 30 pvc(the thinner stuff)...

giantkiller,

Would you be so kind as to measure the wall thickness.  While you have your scale in hand, what do you measure for ID and OD?  (Just to verify the '4 inch sch-30 pvc' size for our friends overseas.)  Thanks in advance.

Rosphere

[starcruiser]

Interesting idea GK, seems like it should match with the open TPU if the finer wire has the same mass as the stranded in that version.

Looking forward to your results

[giantkiller]

Looks like I woke some people up!
I pulsed straight off a 555 to a 50 ohm 5w with coil to ground.

The first picture shows leading and trailing edge kicks and rings. We can see the pulse train too.
But on a closely tuned coil the pulse train does not show up on the collector and you see nothing but kicks and ringing.
At this stage the v per div, amps, kick sizes doesn't matter. But here they are 500mv / div, 5.8ma, resonance at 400khz on a 5v circuit. What I am showing here is the mass of the collector and control copper equals.
Did I compute the turns electronically? No. Mechanically? No. Do what you want just don't change the mass.
I.D and O.D. doesn't matter. I just pulled shit off the shelf and turned it out, pulsed it, and viola! You get what you see. 11 hours worth of work.
The power out is after we get the trigger to ramp up to cyclical operation. I got scope shake. This thing wants to go higher.
It doesn't rotate a compass or move a buzzmag yet. 30 turns of 30 awg per quadrant is not enough.

Houston, we got progress. Sweet, eh?

--giantkiller. There will be no vicarious daydreaming here. Build.

[nong]

Oooh! Wow!
I'd just finish wiring GK4.  Do I come late!! 

Look Great...

[Rosphere]

...resonance at 400khz...
...I.D and O.D. doesn't matter...

giantkiller,

Please at least humor me with a wall thickness.  I may be wrong but I think that it is too soon to send the diameter jury home.

Your 400kHz frequency was smiling at me this morning from a spreadsheet that I made last night based on your given OD: 3.194GHz/2^13=390kHz.

When I introduce a slight wall thickness, by reducing the starting build diameter to place the diameter on a point in the center of the rings section profile, the error rate drops.

On second thought, let us have some fun with this.  Give me your best measured resonance frequency, (with the number of significant figures,) and I will tell you your wall thickness based on your given OD and resonant frequency.

Yeah, this could all be coincidence; like that time when I wound my first coil and flipped on my first oscilloscope.  I discovered the earth's resonant magnetic... local radio station. 

Someone somewhere got a kick out of seeing that discovery, I am sure. 

Thanks man,
Rosphere