Re: CURSE Primary/ Grounded-centre or grounded edge?

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "BunnyKiller by way of Terry Fritz <twftesla-at-qwest-dot-net>" <bigfoo39-at-telocity-dot-com>

Tesla list wrote:

>Original poster: "Jolyon Vater Cox by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <jolyon-at-vatercox.freeserve.co.uk>
>
>
>Having seen photos of the CURSE primary, I am interested to know which is the
>better primary topology -the grounded-centre or the grounded-outer?
>
>I myself use a grounded-centre design and tap outwards to add more turns, but
>from what I have seen of the Danish coil photographs it appears that the
>primary is connected at a point someway between the centre and the outer
>primary turns to the base of the secondary through a number of small black
>wires- are these grounded or not- also if the black wires are grounded
where is
>the "hot" end of the primary -at the inner or the outer turn?
>
>
>
>
>
I think I figured this one out....   those tubes I asked about in a 
previous post are the the supply to the center of the primary coil ( 
which must feed thru holes in the base plate (( wires inside the 4 
tubes)) go over the primary to the center end). The center post is the 
"tap" source to the coil and the flat copper strip must be the feed thru 
to the tap source.  :)  TADA   ( im such a geeenyus )  

my new question...   why the multiple wire system to feed the primary ?? 
   wouldnt one thicker wire be sufficient to feed the center of the 
primary and the tap??   or was this done to simulate a ribbon ( more 
surface area perhaps??) ??

also ...   why wasnt the center post hooked directly to the source under 
the base plate thus removing the need for the copper ribbon on top of 
the base plate??

another thing...   the secondary RF ground is thin gaged wire ....   
seems that this is contrary to popular building techniques ( posts from 
the past have always told us to use heavy wire from the secondary base 
to the ground rod) ....    is this proof that we dont need a #0/2 RF 
ground wire ???  ;)

BUT   I still love this design

only thing I would change is the 4 tubes that cross over the primary.... 
  I think I would use the front ( inside)  of one of the main supports 
to hold the coils center supply ( groove the support somehow insert 
wire) to get to the inner turn of the primary...

Now     where do I find copper ribbon of sufficient size and length ;)   ??

OHH    btw   Finn   where did you find that awesome motor mount for the 
SRSG ??    

kewl stuff ....



Scot D