Search found 52 matches

by Jackson Oswalt
Thu Jan 18, 2018 12:34 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: A Bunch of Successes
Replies: 1
Views: 92

A Bunch of Successes

Hello all! I discovered why I had a crappy vacuum. The copper gaskets hadn't made a good seal. I guess it's because of my 12 year old arms not being able to fully tighten the bolts. So, I went to LDS vacuum for some viton gaskets along with 12 point bolts. After replacing the gaskets, I hooked the e...
by Jackson Oswalt
Sun Jan 14, 2018 3:40 am
Forum: The Trading Post
Topic: Looking for Someone to Go In With on a Bubble Dosimeter
Replies: 1
Views: 108

Re: Looking for Someone to Go In With on a Bubble Dosimeter

I'd be interested in one. Now we just need a few more people to join.
by Jackson Oswalt
Sat Jan 13, 2018 11:41 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: A Bunch of Failures
Replies: 46
Views: 1251

Re: A Bunch of Failures

I tested it once again and only got to 430 microns with the added volume of the elbow.
by Jackson Oswalt
Sat Jan 13, 2018 10:01 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: A Bunch of Failures
Replies: 46
Views: 1251

Re: A Bunch of Failures

All npt threads have Teflon tape on them. Also, I ballasted my pump with the cap completely off for 15 minutes. I then ran it for an hour and was borderline painful to touch. I have an extra 90" elbow that I plan to use, but I fear that will increase the volume of air that heads to be pumped out by ...
by Jackson Oswalt
Sat Jan 13, 2018 9:21 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: A Bunch of Failures
Replies: 46
Views: 1251

Re: A Bunch of Failures

So far I've done one cycle. Afterwards I reached 370 microns and am currently doing another cycle. However, I'm not sure if that 20 micron difference is do to the gas Ballanting or the fact that the pump ran for an hour. Having a blank directly on the inlet vs my gauge being directly on the inlet ha...
by Jackson Oswalt
Sat Jan 13, 2018 7:00 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: A Bunch of Failures
Replies: 46
Views: 1251

Re: A Bunch of Failures

When you say "put a nw25 blank directly on the pump" you mean on the inlet? Also, the gas ballast should or shouldn't be left on the pump? I don't know how water could be in the oil. It's fresh oil, I filled the pump up with the oil Thursday.
by Jackson Oswalt
Sat Jan 13, 2018 5:55 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: A Bunch of Failures
Replies: 46
Views: 1251

Re: A Bunch of Failures

I forgot to mention I did manage to get to 390 microns after running for 20 minutes. image.jpeg image.jpeg Note: I had filled the pump up to the max marking. I lost this much oil after 1hr 10mins of combined run time (two 20 minute runs and one 30 minute run). Is this normal? Also, I don't have acce...
by Jackson Oswalt
Sat Jan 13, 2018 5:27 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: A Bunch of Failures
Replies: 46
Views: 1251

Re: A Bunch of Failures

Running without the gas ballast makes an awful noise. Are you sure this won't damage my pump?
by Jackson Oswalt
Fri Jan 12, 2018 12:03 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: A Bunch of Failures
Replies: 46
Views: 1251

Re: A Bunch of Failures

The oil arrived today and I filled the pump up to it's max value (I added a tad bit too much at first). I then turned the pump on and gave it 10 minutes to pump down. I came back to the same results I received without oil: 500 microns. So, in preparation for another test I added more Teflon tape to ...
by Jackson Oswalt
Thu Jan 11, 2018 1:17 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Ludlum 12 Ratemeter Issues
Replies: 10
Views: 358

Re: Ludlum 12 Ratemeter Issues

After attempting to connect my bf3 tube, the meter stopped outputting power. Just all of a sudden. It didn’t make a noise or anything. Does anybody know why this is and how I can fix it? Thanks.