Hey Thomas...Considering that air is a rather decient "insulator", I would have reason to believe that introducing a poly type of material inside the secondary is asking for trouble. Considering that most poly foams are a hydrogen/carbon molecular combination, any small arc would rapidly become a major burn trial and thus a carbon track for additional arcing to propigate thru....
stick to a couple of baffles ( 1 at each end) its already a proven method of internal arc reduction.... but.. if you want to try the foam method, Im sure we all would like to know just how fast arcing does occur ;)
Scot D Thomas Ryckmans wrote:
Hello, I am finishing my 4 inches/10 cm diameter secondary, fitting a few PPE disks inside to prevent arcing and a couple at the ends to help fitting with primary base and the topload respectively Would it be a good idea to fill the secondary tube with insulating foam to further prevent internal arcing? The foam is the one that come in canisters and expands and harden once sprayed. Polymer is either polyurethane or polystyrene. Many thanks for your comments, Thomas _______________________________________________ Tesla mailing list Tesla@xxxxxxxxxxxxxx http://www.pupman.com/mailman/listinfo/tesla
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