Re: The Twins won't work together?

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

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Parpp807-at-aol-dot-com>

It sounds as tho the primaries are not properly phased. They must be wound in 
the same  
direction. Also, Isis and Osiris were very cantankerous in the coupling 
adjustment.
I used helical primaries and I found that a change in elevation of less than 
2 inches
would go from intense racing sparks to nothing happens. The final adjustment 
was very
sharp and not symmetrical. The twins were very difficult to tune and if it 
were not for the patient help of several knowledgeable coilers I would still 
be
working at it. I used the oscilloscope / sig gen method to tune each primary 
separately.
 

Pictures of Isis and Osiris in its various configurations may be seen at:
http://hot-streamer-dot-com/temp/RalphsCoil/ 

BTW and FWIW: The helical coil gives a very tight k. I find it very easy to 
wind a helix
of any size with copper tubing. I have never wound an Archimedes spiral but I 
doubt if there is any performance difference between the two-forms. 

Cheers,
Ralph Zekelman