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spark gap design




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From:  Dsurfr-at-aol-dot-com [SMTP:Dsurfr-at-aol-dot-com]
Sent:  Thursday, August 20, 1998 4:50 PM
To:  tesla-at-pupman-dot-com
Subject:  spark gap design

Hi All: I finished cutting the copper pipe for an RQ sparkgap I plan to
assemble this weekend. In my impatience to see the improvement I placed the
segments in a row (ala Terry F's gap) on a piece of plexi, holding them in
place with double faced tape. Gap was .03, ten gaps total. Even without re-
tuning the improvement was obvious & I recommend anyone still using bolts for
a static gap should switch immediately. My question is as follows: I noticed
that there was some "carbonization"? building up on the pipe segments after
only a few short runs. How often do you have to clean the gaps, how hard is
this to do & does sanding or whatever widen your gap each time causing you to
regap? If so it would seem that Bert Pool's gap design (where the pipes are
laid on fiberglass rods allowing them to be rotated or easily removed for
cleaning) would be far superior. Thanks,  Jim