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Hi all, I have mentioned in a different post about some changes, so here is a bit more on it. I have fairly recently decided to make some big changes to the primary setup, on my little VTTC, even though it was running very well. I have been very curious to try something like this for quite some time now on a tube coil and see if I can improve efficiency even more by going a somewhat uncommon route for a tube coil. Most things I have read in different books, advises against this. So I have never done this before myself. After reading this and what I have observed online on other built VTTC's, I have always stayed the traditional setup also. But I have always wondered. I have attached a link of a few before and after pictures of the switch to a now 1/4" tubing primary at a low inductance and high capacitance tank. I also decided to do a uncommon support for the primary, because of the small size of this, I can get away in doing this. And well, I think it also gives a neat naked look, when it comes to most tube coils. But I also feel has some benefits here. Currently very pleased with the results and have exceeded my expectations. Still tweaking some small things here. I will be posting some numbers of values and running numbers of performance eventually. Currently retesting all tubes in this new setup. Will post some running pictures also and maybe some video of the great results of when I do take them. Have not taken any yet. Curious if a few others have tried this and if they were successful. https://photos.app.goo.gl/91czEa6iyzVch1xM8 Chris Reeland Ladd, Illinois, USA Sent from my LG V20 _______________________________________________ Tesla mailing list Tesla@xxxxxxxxxxxxxxxxxx https://www.pupman.com/mailman/listinfo/tesla