Re: [TCML] Primary angles

[futuret@xxxxxxx]

Simon,

For regular spark gap coils, a flat primary works well.  For a DRSSTC 
it is
desireable to have a tighter coupling so a coned primary or cylinder
style primary is usually used.  VTTC's usually use cylinder primaries,
but I've used flattish coned primaries also.

A coned primary can be used for a spark gap coil but may tend to
over-couple unless the secondary coil is raised up some to reduce
the coupling.  Over-coupling will cause racing sparks along the
secondary.  The use of a flat primary may also reduce the chance
of arc strikes to the primary.

If proper coupling is allowed for, then a variety of primary designs
can be made to work well.  I used to use slightly coned primaries
about 15 degrees from flat.  Now I use only flat primaries for
spark gap coils.

My TT-42 coil and other coils can be seen at my website at:

  http://futuret.110mb.com

John

---------


-----Original Message-----
From: Simon Dodd <simon@xxxxxxxxxxxxxxxx>
To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
Sent: Fri, 28 Nov 2008 11:23 am
Subject: [TCML] Primary angles


Hi guys, 
 
Could I get some clarification on the pros and cons or differences 
between having a flatter primary and having more of a vertical one. I 
am really struggling with the calculations to find out what would be 
best for my coil. I can send some more specs if needed. 
 
Thanks in advance for all your=2
0help 
 
Simon 
 
--Simon Dodd 
Director/ Technical Manager 
Yes Boss Music 
46a Theydon Road 
London 
E5 9NA 
UK 
simon@xxxxxxxxxxxxxxxx 
07828467411 
www.yesbossmusic.com 
 
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