Original poster: "Cameron B. Prince" <cplists@xxxxxxxxxx>
Hi Bart,
I intentionally made the video the lowest quality, and it certainly is low.
I'll make a better one when I return from NYC. Thanks for your ideas on
balancing the egg.
I am actually taking the egg with me to try on Harry's machine. Hopefully
this will tell me if it's a balance problem or a field strength issue.
I plan to speak to the Corum brothers about the winding of the core as well
to see if they can give me some pointers. I am concerned about dropping the
wire size to accommodate more windings because the setup draws close to 20A
now with 12AWG. I know that more wire will increase resistance which may
reduce current draw, but is it enough to prevent overheating the windings of
smaller wire?
Hopefully I know more when I return.
Thanks,
Cameron
> -----Original Message-----
> From: Tesla list [mailto:tesla@xxxxxxxxxx]
> Sent: Thursday, October 05, 2006 1:10 PM
> To: tesla@xxxxxxxxxx
> Subject: Re: The Egg Works - Well, Almost
>
> Original poster: "Barton B. Anderson" <bartb@xxxxxxxxxxxxxxxx>
>
> Congrats on the power up spinning of the egg! I couldn't make out
> detail very good in the video (my pc sucks), but I could certainly
> see it spinning. I doubt the hollow egg is the cause of not spinning
> up completely. If it is the "weight" of the egg that is the issue,
> you could always drill a small hole in the top of the egg and insert
> a liquid to weight it on it's bottom end (water or oil would probably
> be fine). This would be similar to a fluid damper used on engines for
> balance. Just a thought.
>
> Make sure you do a good write up of this experience!!! I plan on
> building one (after you figure it all out);-)
>
> Take care,
> Bart
>
> Tesla list wrote:
>
> >Original poster: "Cameron B. Prince" <cplists@xxxxxxxxxx>
> >
> >Hey guys,
> >
> >I was able to power up the egg last night and after figuring out I had
> one
> >pair of coils out of phase, I got it working. The egg spins up as you can
> >see here:
> >
> >http://www.teslauniverse.com/images/egg_of_columbus/MOV00628.MPG
> >
> >Notice the egg spins, but never stands all the way upright. I am not
> certain
> >whether this is due to lack of field strength or if it's caused by the
> >hollow egg's poor center of gravity. I am going to wind another layer of
> >12AWG on each coil and see if it improves. I'm looking for another egg
> too.
> >
> >Here are some better pictures of the setup:
> >
> >http://www.teslauniverse.com/images/egg_of_columbus/DSC00624.JPG
> >http://www.teslauniverse.com/images/egg_of_columbus/DSC00625.JPG
> >http://www.teslauniverse.com/images/egg_of_columbus/DSC00626.JPG
> >
> >
> >This is a schematic of Harry Goldman's driver along with a picture of his
> >system he sent me:
> >
> >http://www.teslauniverse.com/images/egg_of_columbus/hg_egg_schematic.jpg
> >http://www.teslauniverse.com/images/egg_of_columbus/hg_driver.jpg
> >
> >
> >Gary Lau pointed out that the black cylindrical AC caps I had could be
> >non-continuous duty motor starting capacitors. I confirmed this last
> night
> >after running the egg for about 10 minutes and finding them to be rather
> >hot. It does look like Harry is using these also by the photo. The silver
> >MOT like AC caps run cold and I'll use those from now on.
> >
> >Harry was right on with the values in the schematic. I am using actually
> 16
> >ohms, because 8 is too low and the resistors I have are 4 ohm. I do
> notice
> >that the set of coils the resistor drives runs hotter than the coils
> driven
> >by the capacitors. This makes me wonder if there is still too little
> >resistance. More experimenting and maybe testing with a scope will
> hopefully
> >help with this.
> >
> >More later,
> >Cameron