Re: More Egg of Columbus Progress

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "BRIAN FOLEY" <ka1bbg@xxxxxxxxxxx>

WOW, you sure have a nice start going on the egg. I wished all my projects
looked so nicely made! cul brian f.
----- Original Message -----
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Tuesday, October 03, 2006 5:52 AM
Subject: More Egg of Columbus Progress


> Original poster: "Cameron B. Prince" <cplists@xxxxxxxxxx>
>
> Hey guys,
>
> I may be able to get this thing finished at least to a point of testing
> tonight. The brass egg came in today (finally after almost 2 weeks) and to
> my surprise, wasn't solid but is hollow and weighs a mere 3 ounces.
> According to a letter I received from Harry Goldman about his egg, this
may
> be a good thing versus a heavy solid egg. Harry mentions a large amount of
> power being required to spin large or heavy objects which in turn causes
his
> resistor to overheat.
>
> Harry also says that about 300 turns of wire are needed on each coil.
> Otherwise the field isn't strong enough. I went with 12 AWG on my variac
> core and with a double layer I can only get around 100 turns on each of
the
> four coils. I'm going to try it like this and hope for the best. If it
> doesn't work, I guess I'll need to drop the wire size to about 18 AWG and
go
> for 300 turns. I'm hoping Harry is basing this observation on a stator
core
> and not a variac core which will hopefully not behave the same way.
>
> Here are some pictures:
>
> http://www.teslauniverse.com/images/egg_of_columbus/DSC00611.JPG
> http://www.teslauniverse.com/images/egg_of_columbus/DSC00618.JPG
> http://www.teslauniverse.com/images/egg_of_columbus/DSC00623.JPG
>
> As you can see I've got two of the coils wound. I did this by measuring
the
> distance around the core and multiplying by the number of turns and added
a
> bit for the extra required to overlap. I pulled off this much wire and
then
> chucked up a 1/2 inch dowel rod in the drill and coiled the wire on it. I
> then pass the dowel through to core as I unwind it. As with about
everything
> I guess, the first one didn't go near as well as the second but I think
both
> are going to work okay if there is enough turns.
>
> I've gotten several AC caps ready there in the photo also. Hopefully I
have
> something spinning later tonight or tomorrow.
>
> I'll let you all know how it goes.
>
> Thanks,
> Cameron
>
>