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| DYI |
 Posted: 04/18/2008 20:40 PM Post subject: |
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Major General
Joined: 07 Jul 2007
Posts: 2025
6846.48 Spud Bux
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| Quote: | Yes but that doesnt mean that it is safe to do
it survived once, who knows if it will survive the second test
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I didn't say anything about it being safe 
| Quote: | | Practice for [redacted] huh |
It could be more accurately called an early prototype of the small scale testbed for the big gun design. Essentially a prototype of a prototype.  |
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| bigbob12345 |
| Posted: 04/18/2008 20:45 PM Post subject: |
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Experienced n00b
Joined: 01 Dec 2007
Posts: 1514
362.74 Spud Bux
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| DYI wrote: | | Quote: | Yes but that doesnt mean that it is safe to do
it survived once, who knows if it will survive the second test
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I didn't say anything about it being safe |
Haha 
Nope you didnt
Have fun dieing |
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| Velocity |
| Posted: 04/19/2008 11:14 AM Post subject: |
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Brigadier General
Joined: 07 Feb 2006
Posts: 949
25.24 Spud Bux
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I didn't see this cannon before...great job! I like the welded aspect; it just makes everything seem so much safer and solid, though I am not sure if that it true or not . Either way, it increases the cool factor.
Those videos were sick; the cannon sounds like some sort of ridiculous rifle. |
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| Killjoy |
| Posted: 04/19/2008 22:54 PM Post subject: |
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Brigadier General
Joined: 12 Nov 2006
Posts: 944
1508.63 Spud Bux
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very nice hybrid you have there DYI.
I'm really glad you fueling system worked well, knowing it works makes me consider putting it on FEAR.
That muzzle flash and sound were incredible by the way |
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| VH_man |
| Posted: 04/20/2008 6:50 AM Post subject: |
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Airsoft Freak
Joined: 09 Dec 2006
Posts: 1223
1635.52 Spud Bux
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i just looked at the prices for the High-accuracy guages...... DAMN!!! is all i can say.
My eyes are kind of fixed on the Digital Guages. They seem like they would be more accurate over higher pressure ranges (does that make sense?).
to me, if you could get ONE digital guage to monitor the meter pressure, the chamber pressure, and the max combustion pressure, it would be more cost effective and easier to use.
Im still in the construction phases of my hybrid at the moment but im seriously considering using the high-accuracy guages. I feel like i wont have as many misfires. |
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| SpudFarm |
| Posted: 04/20/2008 7:02 AM Post subject: |
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Hybrid Guy
Joined: 04 Nov 2006
Posts: 1464
174.52 Spud Bux
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you did not tell me about this 
i simply love it! get some damage vids up here!! |
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| DYI |
| Posted: 04/20/2008 9:31 AM Post subject: |
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Major General
Joined: 07 Jul 2007
Posts: 2025
6846.48 Spud Bux
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Damage vids will be posted next weekend. At 4x oxy/fuel, it should go well over Mach 1 with a golfball (~1 500 fps).
And the whole point of the high accuracy gauges is that they eliminate the meter altogether. This meter will be universal, and will have about $300 worth of gauges attached to it in the final version to allow for any imaginable fuel/oxidiser mix. Right now I have capabilities for up to 4x highly accurate oxy/fuel mixes, up to 20x less accurate oxy/fuel mixes (which obviously aren't possible with the current chamber and ignition), and up to 15x air/fuel mixes (but I don't have a pressure supply for over 10x oxy/fuel yet.
This system doesn't just reduce misfires. It completely eliminates them. By the look of the muzzle flash, this thing probably has higher accuracy than the conventional hybrid meters, and it's certainly easier to use. |
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| Brian the brain |
| Posted: 04/20/2008 9:46 AM Post subject: |
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Brigadier General
Joined: 05 Dec 2005
Posts: 1189
2945.16 Spud Bux
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The navy called...they want their cannon back!
Good lord!!
That thing is awsome! |
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| sniper hero |
| Posted: 04/20/2008 11:19 AM Post subject: |
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Sergeant Major
Joined: 07 Mar 2008
Posts: 175
40.51 Spud Bux
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that's an awesome cannon
and wow that sound is like a real cannon (I mean a cannon with black powder and a big cannon ball)
nice vids I hope you can post more 
and how long does it take to load this beast? |
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| ilovetoblowthingsup |
| Posted: 04/20/2008 15:59 PM Post subject: |
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Brigadier General
Joined: 30 Mar 2007
Posts: 822
1491.90 Spud Bux
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| wow very nice, i like it DYI |
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| SpudFarm |
| Posted: 04/20/2008 16:27 PM Post subject: |
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Hybrid Guy
Joined: 04 Nov 2006
Posts: 1464
174.52 Spud Bux
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| hmm has DYI built a hybrid before? |
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| elitesniper |
| Posted: 04/20/2008 16:56 PM Post subject: |
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Brigadier General
Joined: 13 Oct 2007
Posts: 969
889.94 Spud Bux
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I think it's his first  |
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| DYI |
| Posted: 04/20/2008 20:34 PM Post subject: |
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Major General
Joined: 07 Jul 2007
Posts: 2025
6846.48 Spud Bux
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This is my first hybrid. But I don't half do anything, and I wasn't going to start with some pansy little 30 cubic inch design that couldn't shoot through 1/2" plate steel... I mean, that just wouldn't quite do it for me.
On a related matter, I was doing a harmless, blank fire 3x demo in my backyard when my asshat neighbour called the cops. My parents covered for me and through something that seemed like telekinesis, we all came up with the story that it was a simple pneumatic burst disk noisemaker. The cops get a lot of bullsh*t calls from that guy, and they obviously didn't notice the large wooden stand that was resting on my shed, or the fully assembled 75mm hardened steel APFSDS round sitting on my deck.
The point of all this rambling is that my parents want me to wait until everyone has cooled down, and won't let me do any more shooting until next Monday, so the video will be postponed from next weekend, to sometime next week. In the downtime, I'll be trying to build the most kickin' silencer in the land to quiet this thing down a bit. Any advice on that would really be appreciated, because making things less noisy has never been a strong point of mine. |
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| STHORNE |
| Posted: 04/20/2008 20:39 PM Post subject: |
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Master of Spuds
Joined: 14 Feb 2007
Posts: 1160
475.04 Spud Bux
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| starman |
| Posted: 04/20/2008 20:44 PM Post subject: |
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Big Daddio
Joined: 12 Dec 2007
Posts: 818
1237.44 Spud Bux
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| DYI wrote: | | On a related matter, I was doing a harmless, blank fire 3x demo in my backyard when my asshat neighbour called the cops. My parents covered for me and through something that seemed like telekinesis, we all came up with the story that it was a simple pneumatic burst disk noisemaker. The cops get a lot of bullsh*t calls from that guy, and they obviously didn't notice the large wooden stand that was resting on my shed, or the fully assembled 75mm hardened steel APFSDS round sitting on my deck. |
Called the cops huhhh. I could tell that blast was at least 20 db louder than your average-bear potato gun shot...doesn't surprise me a neighbor called you in. Good thing your parents support you. Guess it's time to find some shootin' grounds out in the country somewhere... I have to do the same thing.
Edit: re. quieter...you could always lengthen your barrel some...or as long as your shooting blanks, build a big muffler for it to shoot into..something big and baffled, and can take the punishment...bigger version of a car muffler. Baffled-up 55 gallon barrel maybe... |
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