Original poster: "R. Bergmann by way of Terry Fritz <twftesla-at-qwest-dot-net>" <bergmann_-at-hotmail-dot-com> I am going to start a 3KVA coil soon, and I want to have other opinions on rotory gaps. Should I go with async or sync? The conventional design or the new rod/HDPE arbor design? So far I was thinking sync/conventional. Out of all the options what would be the best for me? Thanks much, Ryan