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4hv.org :: Forums :: General Chatting
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Post Your Cool Pic Here!

Move Thread LAN_403
...
Sun Sept 30 2007, 04:44AM
... Registered Member #56 Joined: Thu Feb 09 2006, 05:02AM
Location: Southern Califorina, USA
Posts: 2445
The launch is rapidly approaching (2 weeks), so it was time to put some paint on Krazed.

Of course, you can't launch the GPS tracker with any old paint job, so it was time to break out the System.

We discovered that if you use run of the mill spray paint, spray it on, wait 5 minutes, then spray it with florscent paint, the florscent paint will craze over and form a 'desert playa' patches, the size of which are dependent on how heavy you put on the top coat. I light coat gives a very fine pattern, with features about 1/4" in diameter, a heave coat gives the result you see in the pics.

This time we were armed, and did a few trials to to see what color effects were possible. Notable ones included green/black, yellow/red, red/black, and red/bue.
1191126521 56 FT6000 Img 2892 1191126723 56 FT6000 Img 2893

1191126810 56 FT6000 Img 2899 1191126920 56 FT6000 Img 2867

So we decided on the red/blue, but the red looked kinda pink, and was to bright, so we put a coat of blue clear on it, and covered it with a coat of clear. So there here he is:

1191127018 56 FT6000 Img 2884 1191127189 56 FT6000 Img 2890 [
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Dr. Dark Current
Sun Sept 30 2007, 11:00AM
Dr. Dark Current Registered Member #152 Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
Nik wrote ...

I knew it was the frequency of the arc flipping on and off, I meant the smaller point of contact VS the larger ones.
I notice this even with my flyback driver that runs at several 10's of kHz, I think it has to do with the surface of the electrodes that the arc doesn't move continuously on them but rather jumps little "steps" because the surface of the ladder is never perfectly even.
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Steve Conner
Sun Sept 30 2007, 12:45PM
Steve Conner Registered Member #30 Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
Yay, crazed paint job for a krazed rocket! That looks great, I'm tempted to try it on the pickguard of my old guitar.
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Simon
Wed Oct 03 2007, 12:22AM
Simon Registered Member #32 Joined: Sat Feb 04 2006, 08:58AM
Location: Australia
Posts: 549
One reason why circuits are smaller these days:

(An old op amp)

1191370722 32 FT1630 Opamppicsmall1

1191370722 32 FT1630 Opamppicsmall2

The insides:

1191370722 32 FT1630 Opamppicsmall3

1191370722 32 FT1630 Opamppicsmall4
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Hazmatt_(The Underdog)
Wed Oct 03 2007, 06:12AM
Hazmatt_(The Underdog) Registered Member #135 Joined: Sat Feb 11 2006, 12:06AM
Location: Anywhere is fine
Posts: 1735
talking about rockets... did you guys see the X-wing fighter with 4 engines in it? its supposed to launch on the 10th but i dunno what the link is.
That's a crazy rocket.
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...
Wed Oct 03 2007, 02:21PM
... Registered Member #56 Joined: Thu Feb 09 2006, 05:02AM
Location: Southern Califorina, USA
Posts: 2445
Yes I have head plenty about it wink

here is the build thread
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Electroholic
Tue Oct 09 2007, 01:03AM
Electroholic Registered Member #191 Joined: Fri Feb 17 2006, 02:01AM
Location: Esbjerg Denmark
Posts: 720
Link2
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ragnar
Tue Oct 09 2007, 03:11AM
ragnar Registered Member #63 Joined: Thu Feb 09 2006, 06:18AM
Location:
Posts: 1425
I was worrying about that -- and the flight dynamics (of lackthereof) of what was designed to look cool as science fiction, as opposed to flying... =P

I guess it would have worked great in space! =-D
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...
Tue Oct 09 2007, 04:03AM
... Registered Member #56 Joined: Thu Feb 09 2006, 05:02AM
Location: Southern Califorina, USA
Posts: 2445
They are still speculating on why exactly it died--it should have worked--the most plausible one I have heard was that the launch rod was to short, which caused it to take off at an angle, which overstressed the 'fins' and lead to the catastrophic failure.

It did make a nice picture though!
1191902534 56 FT6000 Xwing

taken from here Hopefully no one will come and kill me for rotaing/croping it.
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Hazmatt_(The Underdog)
Tue Oct 09 2007, 06:50AM
Hazmatt_(The Underdog) Registered Member #135 Joined: Sat Feb 11 2006, 12:06AM
Location: Anywhere is fine
Posts: 1735
I hope this next time they actually stop a moment and figure out its C.O.M. and balance it properly. That and actually build a decent superstructure.
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