Re: Winding a Spiral Primary

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Brian" <ka1bbg@xxxxxxxxxxxxx>

Dr., there are a few things that will help. is the coil unsupported after it
is wound or is it held by some kind of form?
second, tight turns usually require air pressure or liquid held under
regulated pressure to prevent flat spotting.
the amount of tension you pull while winding can make a great difference.
hit me off list if you wish to chat on the subject ka1bbg-at-webryders.net
----- Original Message -----
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Saturday, November 26, 2005 3:55 PM
Subject: Winding a Spiral Primary


> Original poster: Drbillpmt@xxxxxxx
>
> Hi All,
>
> I'm having a problem winding spiral flat coils of 1/4" and 3/16"
> copper tubing. Som of the pictures posted show flat coils that are
> works of art! I'm usually pretty good at things mechanical, but I
> just can't seem to be able to devise a way to repetitively, and
> accurately, wind many coils necessary for a customer order.
>
> The center of the spiral is quite small.
>
> Dr. Bill
>
>
>