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Great results! Beats my tube coils. Need to try once again. Cheers, Charles <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=icon> Virus-free. www.avast.com <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=link> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> On Tue, Dec 25, 2018 at 9:18 AM Chris Reeland <chrisreeland@xxxxxxxxx> wrote: > Thanks BrianB, > > I still feel myself, it is still a bit ugly :-( but works great :-) > > That would be great if you do a VTTC. Kind of lonely here currently in this > realm... :-D > > They are my favorite. I also just love the glow of a glass vacuum tube. And > "seeing" the friction of the electrons "hitting" the plate. And speaking of > "seeing", these 304's are unlike any tube that I have ever run before when > it comes to this...there are some really neat "patterns" that can be > seen... > > Now my next one waiting for Spring does look nice and I hope it stays that > way... > > Back to the working great part... I have gotten around to rolling all my > 304 tubes on this improved setup yesterday (12/24). Ran each tube for just > a "quick" tuning for best streamer length, wrote down results, and then I > just "played" around with each tube trying different rates and changing > tuning settings. Spent from 3pm to 8:30pm rolling. Downtime switching tubes > was about 5 minutes each. Otherwise running non-stop. MOT handled this just > fine, only getting slightly hot at times, but cooled quickly on lower rates > and during tube switching. No more the scalding hot just touching it for a > split second checking it!!! The last time I did tube rolling on several > tubes, I had to let the MOT really cool down after each short run. Took > really long, for not really much true run time. > > So here I will just list the results now: > > Again this is just 10A variac using the 120V setting. And no PF caps, not > going to bother. > > Eimac 304's > > TL#1 got 31"@14.5A > > This one is still the "swords" tube, easily tuned in for this. And I can > now also tune for some other strange behavior. Still the only tube that I > can get perfect swords just one after another. Going to scope several > things on this tube when I get a chance, take pictures and notes and then > scope a "regular" tube and compare. I will admit I am still puzzled by this > one tube. Only one like it. > > TL#2 got 32"@12A > > TL#3 got 34"@14A > > TL#4 got 33"@14A > > TL#5 got 34"@12.5A > > TL#6 got 33"@12A > > TL#7 got 31"@12A > > TL#8 got 34"@13A > > T?#1 got 33"@14A > > The reason for the question mark is the tube markings are completely gone, > not sure if a TL or TH. > > TH#1 got 33"@13.5A > > TH#2 got 33"@11.5A > > TH#3 got 32"@13A > > TH#4 got 33"@12.5A > > Very pleased with these results and the efficiency here. Going to pick a > couple and do some really thorough experimenting and tuning when I get a > chance. > > So this is all for now... Happy Holidays everyone... > > Chris Reeland > Ladd Illinois USA > > Sent from my LG V20 > _______________________________________________ > Tesla mailing list > Tesla@xxxxxxxxxxxxxxxxxx > https://www.pupman.com/mailman/listinfo/tesla > _______________________________________________ Tesla mailing list Tesla@xxxxxxxxxxxxxxxxxx https://www.pupman.com/mailman/listinfo/tesla