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Tim in Phoenix




Joined: 21 Oct 2006
Posts: 4378
Location: Phoenix


PostLink    Posted: Sat Sep 22, 2012 4:02 pm    Post subject: Houston We Have a Problem! Reply with quote


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Guys

When a new nine inch tube goes to air........don't try this at home!!!!!







I love the smell of ozone in the morning! Nice snapping sound too.
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Jeremy112




Joined: 28 Sep 2006
Posts: 2645
Location: Fond du Lac, WI


PostLink    Posted: Sat Sep 22, 2012 4:37 pm    Post subject: Reply with quote

Wow!! Neato shots Tim. You caught them perfectly!! I love the way electricity looks when its sparking all over Very Happy you have mini lightning bolts there!! Mr. Green
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HK-Steve




Joined: 15 Jul 2006
Posts: 849
Location: Switzerland

TV/Projector: Marquee 9500, Epson 8100


PostLink    Posted: Sat Sep 22, 2012 4:40 pm    Post subject: Reply with quote

Sweet, how did you take the pics?

Long exposure??


Cheers

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Tim in Phoenix




Joined: 21 Oct 2006
Posts: 4378
Location: Phoenix


PostLink    Posted: Sat Sep 22, 2012 4:45 pm    Post subject: Reply with quote

Yup

I went to shutter priority on my CD500, eight seconds works good, the arcs are about four seconds apart. I'll put up some more pictures soon.


.
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HK-Steve




Joined: 15 Jul 2006
Posts: 849
Location: Switzerland

TV/Projector: Marquee 9500, Epson 8100


PostLink    Posted: Sat Sep 22, 2012 4:52 pm    Post subject: Reply with quote

Yes Please, More.

I take pics of lightning, with a 30sec exposure.
May get some tonight, will see.

Cheers

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garyfritz




Joined: 08 Apr 2006
Posts: 12024
Location: Fort Collins, CO


PostLink    Posted: Sat Sep 22, 2012 5:03 pm    Post subject: Reply with quote

Dayum. Those are about 2" arcs?

What do you mean the tube "went to air" ? I assume you didn't use a new 9 incher just to give us a light show!!
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Tim in Phoenix




Joined: 21 Oct 2006
Posts: 4378
Location: Phoenix


PostLink    Posted: Sat Sep 22, 2012 5:08 pm    Post subject: Reply with quote

garyfritz wrote:
Dayum. Those are about 2" arcs?

What do you mean the tube "went to air" ? I assume you didn't use a new 9 incher just to give us a light show!!



If the vacuum was good the tube would have worked; it appears to have lost the vacuum.


.
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garyfritz




Joined: 08 Apr 2006
Posts: 12024
Location: Fort Collins, CO


PostLink    Posted: Sat Sep 22, 2012 5:14 pm    Post subject: Reply with quote

Huh, OK. So we're looking at the neck end (obviously) and it looks like you don't have the tube plugged in. Remind me, the HV goes in along the bell of the tube, right? (It's been years since I tore my Marquee apart! Very Happy) So even with the neck not connected, the HV is traveling through the tube to the neck and arcing to ground? And presumably that happens easier in air than in a vacuum? I wouldn't think the current could travel through air all the way from the bell to the neck, unless maybe it was conducting along the inside of the tube, but if it did that wouldn't it do it in vacuum too?

Did you have the neckboard plugged in when you first fired this puppy up? Did the neckboard get fried?
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Tim in Phoenix




Joined: 21 Oct 2006
Posts: 4378
Location: Phoenix


PostLink    Posted: Sat Sep 22, 2012 5:22 pm    Post subject: Reply with quote

Guys

Tubes have a conductive coating inside. so it brings 35kv all the way to the front of the gun. Amazingly, the neckboard still works. I used a junk 8500 to get the pix, I did not want to fry my customer's 9500 Ultra just for fun.


.
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Nashou66




Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY


PostLink    Posted: Sat Sep 22, 2012 5:28 pm    Post subject: Reply with quote

So you hook it up with the VNB then let it run a minute or two then take it off and the tube does that?

Very cool yet it sucks at the same time!!!

Nashou

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"Republicans believe every day is the Fourth of July, but the Democrats believe every day is April 15." --- President Reagan

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Tim in Phoenix




Joined: 21 Oct 2006
Posts: 4378
Location: Phoenix


PostLink    Posted: Sat Sep 22, 2012 5:32 pm    Post subject: Reply with quote

Say Nash

No it just starts arcing when the high voltage comes up, it also arcs with the neckboard on.


.
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HK-Steve




Joined: 15 Jul 2006
Posts: 849
Location: Switzerland

TV/Projector: Marquee 9500, Epson 8100


PostLink    Posted: Sat Sep 22, 2012 5:42 pm    Post subject: Reply with quote

A pic from last month,


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Nashou66




Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY


PostLink    Posted: Sat Sep 22, 2012 5:51 pm    Post subject: Reply with quote

Tim in Phoenix wrote:
Say Nash

No it just starts arcing when the high voltage comes up, it also arcs with the neckboard on.


.


ohhhhh, so the other tubes are connected and the HV is on the tube but the VNB is just connected to the umbilical cord?


Just trying to figure out how you get the HV to go to the tube with no VNB connected.

Nashou

_________________
Don't blame your underwear for your crooked ass~ unknown Greek philosopher


"Republicans believe every day is the Fourth of July, but the Democrats believe every day is April 15." --- President Reagan

One Smart Dog!!!

Marquee High Performance Bellows now shipping!!
Marquee Modifications and Performance Enhancement
Marquee C-element and Bellow removal
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View user's photo album (1 photos)
HK-Steve




Joined: 15 Jul 2006
Posts: 849
Location: Switzerland

TV/Projector: Marquee 9500, Epson 8100


PostLink    Posted: Sat Sep 22, 2012 6:36 pm    Post subject: Reply with quote

Is there also an arc inside the tube, that would be cool to see.
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Tim in Phoenix




Joined: 21 Oct 2006
Posts: 4378
Location: Phoenix


PostLink    Posted: Sat Sep 22, 2012 7:21 pm    Post subject: Reply with quote

Guys

I moved the camera in closer:







The projector was on for five minutes this time, the hvps is more forgiving than I realized!

.
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Nashou66




Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY


PostLink    Posted: Sat Sep 22, 2012 7:55 pm    Post subject: Reply with quote

You are Nuts TIM!!! What if it arced to your Camera!!!

Nashou

_________________
Don't blame your underwear for your crooked ass~ unknown Greek philosopher


"Republicans believe every day is the Fourth of July, but the Democrats believe every day is April 15." --- President Reagan

One Smart Dog!!!

Marquee High Performance Bellows now shipping!!
Marquee Modifications and Performance Enhancement
Marquee C-element and Bellow removal
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View user's photo album (1 photos)
HK-Steve




Joined: 15 Jul 2006
Posts: 849
Location: Switzerland

TV/Projector: Marquee 9500, Epson 8100


PostLink    Posted: Sat Sep 22, 2012 9:03 pm    Post subject: Reply with quote

Sorry, Tim has been disconneted,

actually connected to some HV in the process of these photos, and is currently unavailable. beep, beep, beep.

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Tim in Phoenix




Joined: 21 Oct 2006
Posts: 4378
Location: Phoenix


PostLink    Posted: Sat Sep 22, 2012 9:42 pm    Post subject: Reply with quote

Nashou66 wrote:
You are Nuts TIM!!! What if it arced to your Camera!!!

Nashou



I have a spare! Smile The lens was about a foot away.


.
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Tim in Phoenix




Joined: 21 Oct 2006
Posts: 4378
Location: Phoenix


PostLink    Posted: Sat Sep 22, 2012 11:05 pm    Post subject: Reply with quote

Guys


This is completely addicting!







cccccan't stoppppp taking cool spark pictures..........until the projector blows anyway......

I wonder if Tesla had days like this Smile



.
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garyfritz




Joined: 08 Apr 2006
Posts: 12024
Location: Fort Collins, CO


PostLink    Posted: Sat Sep 22, 2012 11:39 pm    Post subject: Reply with quote

Given how the arc is traveling along the surface of the glass, how long until it blows??
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