Search found 1233 matches

by John Futter
Wed Feb 14, 2018 6:31 pm
Forum: Fusor and/or General Fusion Theory (& FAQs)
Topic: Inner Grid Rings and High Voltage Feedthrough
Replies: 5
Views: 137

Re: Demo vs Non-Demo Nuclear Fusion

Caine
this is not spoonfeeding 101
this question should have been asked in the New User Chat Area.
If you had read all the faq's you would already know the answer
by John Futter
Thu Feb 01, 2018 6:01 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Fusion Claim - Jackson Oswalt
Replies: 15
Views: 631

Re: Fusion Claim - Jackson Oswalt

Why is everyone in such a hurry Jackson I would turn a diff pump on check it 30 mins later that backing pressure is in bounds and leave it for three or four days to self clean itself and the vacuum vessel it is connected to. Super serious people would leave the system for a few weeks to fully outgas...
by John Futter
Fri Jan 26, 2018 9:01 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Has anyone used the Spellman X3000 50V-30kV 400uA Rev E7 24Vdc
Replies: 8
Views: 373

Re: Has anyone used the Spellman X3000 50V-30kV 400uA Rev E7 24Vdc

Samuel you need to do a lot of reading on this site you will need a correctly calculated ballast resistor to get around the problem that Dennis has highlighted of the near short @ startup there is plenty of info in this forum on this, many of them from me. And no I am not going to repeat why this is...
by John Futter
Sun Jan 21, 2018 1:12 am
Forum: Fusor and/or General Fusion Theory (& FAQs)
Topic: Neutron temperature
Replies: 5
Views: 266

Re: Neutron temperature

Hunter is new here
maybe this should have been asked in the "New User Chat Area"
by John Futter
Tue Jan 16, 2018 6:03 pm
Forum: Vacuum Technology (& FAQs)
Topic: Double-Checking Diffusion Pump before Buying
Replies: 6
Views: 314

Re: Double-Checking Diffusion Pump before Buying

about 40 years old or older
at least the christmas tree appears to be all there
Check the heater when you get it if not working return it
by John Futter
Sat Jan 13, 2018 6:20 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: A Bunch of Failures
Replies: 46
Views: 1443

Re: A Bunch of Failures

With gas ballast closed the pump should be very quiet openeing gas ballast will give a gurgling sound that gets louder as you open the ballast further. put a nw25 blank directly on the pump does it go quiet without gas ballas??t. one should not leave these pumps on gas ballast as they will loose alo...
by John Futter
Fri Jan 12, 2018 5:55 pm
Forum: The Trading Post
Topic: Vacuum Throttle Valve
Replies: 9
Views: 341

Re: Vacuum Throttle Valve

Hunter Long
you need to change your login name to your real name
No handles only proper real names as per the rules for Fusor.net
by John Futter
Sat Jan 06, 2018 10:52 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: A Bunch of Failures
Replies: 46
Views: 1443

Re: A Bunch of Failures

you can get the right ultra grade 19 oil here
http://www.pchemlabs.com/product.asp?pid=1438
by John Futter
Sat Jan 06, 2018 7:35 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: A Bunch of Failures
Replies: 46
Views: 1443

Re: A Bunch of Failures

Anyone with a lathe some brass tube and a little brass plate would make one in under an hour
no oxy acetylene no prob just soft solder will do.

MAKE ONE!!!!
by John Futter
Tue Jan 02, 2018 6:46 pm
Forum: Ion Gun Design and Construction (& FAQs)
Topic: Electrometers and Picoammeters
Replies: 14
Views: 579

Re: Electrometers and Picoammeters

Ian
It is not the triax cable that is hard to get, it is the eye wateringly expensive cord plug
you can get them from Pasternak