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Railgun fired!

A place to ask general spud cannon related questions.
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Unread postAuthor: CpTn_lAw » Sun Feb 22, 2009 4:43 pm

rp181 wrote:@ CpTn
You wish =) How much pressure do you think just the sparks cause? I don't know, but alot more then 50 PSI =p Look for the cloud of smoke in the video.



I meant the stationairy sparks after the shot, there indeed no chance the sparks at the moment of the shots could be blown out.
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Unread postAuthor: rp181 » Sun Feb 22, 2009 6:15 pm

I don't get what your saying, But even if they stay in, who cares? Its just metal powder.
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Unread postAuthor: ramses » Sun Feb 22, 2009 8:41 pm

I just realized that the pressure from the sparks are probably getting pushed all the way into your air chamber from the injector. I suppose a sealed breach would have the advantage of using that pressure.

and I don't think chronographs work because of the epic muzzle blast or something. maybe if you made a flashhider for it...
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Unread postAuthor: rp181 » Sun Feb 22, 2009 10:56 pm

The burn on the teflon shows right behind the rails there was plasma, but it gets nearly nonexistent at the end. Normal chrono would be difficult to get to work, im working on a break wire system.
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Unread postAuthor: Lentamentalisk » Sun Feb 22, 2009 11:23 pm

what about a chrony a good 50" away or something like that? Maybe shoot through a 2" hole in a piece of steel, that is a couple of feet away, to block some of the discharges?
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Unread postAuthor: rp181 » Mon Mar 09, 2009 7:20 am

I did a plasma armature (lego wrapped with foil) just for kicks. The video looks cool.
http://www.youtube.com/watch?v=HQBCIiqB7MQ

In other news, the railgun won me enough money to pay for the railgun, with a net gain of 2$.
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Unread postAuthor: Moonbogg » Fri Mar 20, 2009 1:29 am

Damn, I want to see that video. This thing is friggin insane and awesome. The video was removed?
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Unread postAuthor: psycix » Fri Mar 20, 2009 12:58 pm

In other news, the railgun won me enough money to pay for the railgun, with a net gain of 2$.

How?


Your vid is removed :(
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Unread postAuthor: rp181 » Fri Mar 20, 2009 2:21 pm

science fair.

Sorry about thevideo, i put them all in a composite:
http://www.youtube.com/watch?v=C6cV10QEGGk
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Unread postAuthor: SEAKING9006 » Fri Mar 20, 2009 2:29 pm

Wheres the lego wrapped with foil video?
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Unread postAuthor: rp181 » Fri Mar 20, 2009 2:54 pm

All of the bright white spark ball ones. Its in my basement, and it misses the target.
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Unread postAuthor: Moonbogg » Sun Mar 22, 2009 9:46 pm

Video was sweet! I thoguht a rail gun was purely electromagnetically powered. You have some magical wizardry going on here!
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Unread postAuthor: rp181 » Fri May 29, 2009 10:41 pm

I don't know why im posting this... but a small update.
A high speed camera (miro 3) will be available to me for atleast a week, mid september, after coming back from out of country. I also made a animation with blender explaining all the parts, it is rendering it now.

BTW, The animation in 750 frames, and each has reflection, light, and all that fancy stuff, in a full screen (17" LCD) resolution. That means a reallllllllly long render time, Approximitly 7 days of straight computing!

If anyone wants me to record anything while I have the camera, and I have accsess to it, Ile try and get it done, though railgun is priority.
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Unread postAuthor: ramses » Tue Jun 02, 2009 4:17 pm

do you have a picture of the board you used for the science fair. I am p*ssed that my EM ring launcher failed to place, and want to improve.:evil:

It probably didn't help that my variac caught fire before I completed testing :oops:
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Unread postAuthor: rp181 » Tue Jun 02, 2009 7:44 pm

I don't want to show the board... it sucks. By the time i had all the parts, I had 2 weeks to do everything...
I didn't place, but got 2 private awards (AFCEA and US army)
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