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VERA: My very favorite gun

Built a hybrid cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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Unread postAuthor: mark.f » Mon Mar 19, 2012 8:05 am

Am I the only one permanently saving all pictures and videos posted in this thread? :)

Good job (again) on VERA! Are any low weight fuels (hydrogen, methane) in the works?
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Unread postAuthor: D_Hall » Mon Mar 19, 2012 11:40 am

Nah. Propane is totally adequate. Why make it harder than it has to be?
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Unread postAuthor: plasman65kv3Ma » Tue Mar 20, 2012 12:50 am

holy crap! i am proud to be part of this unique forum, this is something amazing, after watching larda's hybrid i never thought someone could do an hybrid more powerful. congratulations D_Hall !!
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Unread postAuthor: ramses » Tue Mar 20, 2012 2:58 pm

mark.f wrote:Am I the only one permanently saving all pictures and videos posted in this thread? :)


Nope. :D
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POLAND_SPUD wrote:even if there was no link I'd know it's a bot because of female name :D
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Unread postAuthor: jackssmirkingrevenge » Tue Mar 27, 2012 12:46 am

Seems that my sending of the link was ignored, but D_Hall's wasn't :roll:

http://www.thefirearmblog.com/blog/2012 ... otato-gun/
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Unread postAuthor: JDP12 » Tue Mar 27, 2012 12:56 am

Just saw that when I checked the blog, nice.
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"Some say his pet elephant is pink, and that he has no understanding of "PG rated forum". All we know is, he's called JSR. "
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Unread postAuthor: jerome » Sun Apr 08, 2012 9:43 pm

wow, thats truly incredible! thank you for being so awesome! you can actually see, At about 2:49, the dust disturbed on the ground below the projectile, are those mach waves/ wake? more details on the valving/ diaphrams etc? super cool man, awesome!
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Unread postAuthor: MrCrowley » Sun Apr 08, 2012 9:51 pm

jerome wrote:more details on the valving/ diaphrams etc?

Pretty much just a burst disk valve.
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Unread postAuthor: jackssmirkingrevenge » Sun Apr 08, 2012 11:57 pm

MrCrowley wrote:Pretty much just a burst disk valve.


You say "just", but it's a substantial construction on this scale...

Photos had been posted before but to my knowledge disappeared, are they approved for public release now?
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Unread postAuthor: MrCrowley » Mon Apr 09, 2012 1:25 am

jackssmirkingrevenge wrote:
MrCrowley wrote:Pretty much just a burst disk valve.


You say "just", but it's a substantial construction on this scale...

I didn't think there would be much point elaborating considering jerome had to ask what the valve even was. Granted, jerome probably wasn't here when the "Pipe Dream" thread was active, but I figured there was no need to give details of what thickness sheet metal is used, how big the flange is and how David gets the disk to seal in the flange as I doubt it would matter.

I think most people familiar with burst disk valves can get an idea of just what material is required and what fittings are needed/available for such a large cannon.
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Unread postAuthor: jackssmirkingrevenge » Thu Apr 12, 2012 11:10 am

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Unread postAuthor: D_Hall » Thu Apr 12, 2012 7:31 pm

Do you prefer the main Gizmodo site?
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Unread postAuthor: jackssmirkingrevenge » Thu Apr 12, 2012 11:19 pm

Ah, much better :D

So, how's the publicity working out?
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Unread postAuthor: D_Hall » Fri Apr 13, 2012 10:09 am

Hasn't done a thing for me so far. But from my perspective the most important thing was to have a publically accessable video so that when a potential customer asks, I can send him the link rather than have to snail mail it to him (video won't go through email).

From that perspective, it's already gold.

I also know that it's making the rounds because I had a customer for another service I offer at the office make a comment about having had it forwarded to him by a third party a few states away.
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Unread postAuthor: D_Hall » Wed May 16, 2012 6:36 am

Wish me luck. Today's the big day. Today Vera gets showcased a bit more officially....

http://www.ndia.org/meetings/2560/Pages/default.aspx

Or more to the point...

http://proceedings.ndia.org/2560/13647.pdf
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