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WIP: 1.5" Porting Handheld Piston Hybrid (DAMAGE VIDS)

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: SpudBlaster15 » Thu Sep 30, 2010 6:41 pm

Gun Freak wrote:Looks like its getting too big to be handheld anymore but I suppose that helps deal with the recoil.


It's still only ~30lbs, so while heavier than most launchers, it is still manageable. The design ergonomics make it very comfortable and balanced during firing, while the mass effectively absorbs the recoil energy of even heavy rounds.

Ragnarok wrote:Has it got a record player yet? I won't be happy unless it can play my 33 rpm Rolling Stones vinyls while I'm shooting.


Not yet, but I'm working on adding a sound system with an iPod dock so I can blast death metal while I'm out shooting. :lol:
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Unread postAuthor: Fnord » Thu Sep 30, 2010 6:42 pm

Rag,
You are not being British hard enough. You're supposed to ask if it can make tea (or something almost, but not entirely, unlike tea)


SB15:
You didn't happen to get chrono readings or a video of that shot did you?
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Unread postAuthor: Gun Freak » Thu Sep 30, 2010 6:48 pm

Ragnarok wrote:Well... I like rice. Particularly risotto.

Actually, I forgot the orange squash bottles that litter the place. I go through them at an insane rate, in spite of the fact I drink it at at double dilution. Mostly because I don't really drink tea, coffee, beer, Coke, etc, etc... well, anything other than squash really, apart from actual orange juice.

lol :D
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Unread postAuthor: Ragnarok » Thu Sep 30, 2010 6:55 pm

Fnord wrote:You are not being British hard enough

British? I'm being old fashioned.

You see, I'm one of those old timey folks who likes my launchers nice and pneumatic, so a hybrid like this is far too modern for me.
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Does that thing kinda look like a big cat to you?
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Unread postAuthor: Gun Freak » Thu Sep 30, 2010 6:59 pm

Ragnarok wrote:Oh of course, I have scones, tea and crumpets with the Queen regularly, and I use northing less than one's porshest voice, you know, adding in "r"'s that rarlly shorden't be thar, old chap. Tally-ho lad!

British enough for ya? :D
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Unread postAuthor: SpudBlaster15 » Thu Sep 30, 2010 10:01 pm

Ugh, Oxygen mixes are killing me... The ball valves I'm using are capable of withstanding up to 11x air/fuel mixes, but introducing additional O<sub>2</sub> concentration seems to do them in.

The new vent valve held up fine, but the seals in the chamber/meter separation valve gave out after only one air/oxy/fuel shot, subsequently destroying the pressure gauge when the pressure in the meter spiked to high levels. Clearly I need something more robust, such as a 2KPSI rated hydraulic ball valve.

I did manage to get a couple shots on video, and they are pretty impressive. The recoil with the 160g battery slugs is pretty substantial, though only slightly worse than that of a 12 gauge shotgun, so nothing to write home about.

The video should be up in a couple hours.
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Unread postAuthor: SpudBlaster15 » Fri Oct 01, 2010 3:24 am

Took longer than I expected, as YouTube's uploader is extremely slow, and it was a fairly large file.

[youtube]http://www.youtube.com/watch?v=BhHvxfDg-uw[/youtube]
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Unread postAuthor: jackssmirkingrevenge » Fri Oct 01, 2010 4:19 am

Impressive indeed, though it would be nice to see some footage of the thing recoiling :)
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Unread postAuthor: SpudBlaster15 » Fri Oct 01, 2010 2:10 pm

Yeah, I'm working on getting another camera, so I can film a closeup of the target, and simultaneously capture the recoil of the launcher.
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Unread postAuthor: saefroch » Fri Oct 01, 2010 4:51 pm

Definitely approve of the music :D :D :D

SPARKS?!?!?!?!?? Where did they come from?
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Unread postAuthor: Gun Freak » Fri Oct 01, 2010 5:00 pm

Did the video go out at the D-cell shot? Every other part of the video was okay but it all went black at that shot, so I didn't see it... other than that, nice job, I want to see you firing it.
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Unread postAuthor: SpudBlaster15 » Fri Oct 01, 2010 5:24 pm

saefroch wrote:Definitely approve of the music :D :D :D


:D That's probably my favourite guitar solo ever...

SPARKS?!?!?!?!?? Where did they come from?


They came out the barrel along with the projectile. Probably pieces of the duct tape sabot burning in the increased oxygen levels.

Gun Freak wrote:Did the video go out at the D-cell shot? Every other part of the video was okay but it all went black at that shot, so I didn't see it...


Nah, the shot was just dark. It looked fine when I rendered it in Sony Vegas, but YouTube completely destroyed the video quality. You can see that I used increased lighting for the next shot.

other than that, nice job, I want to see you firing it.


We'll see. :wink:
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Unread postAuthor: Butch902 » Sun Jan 02, 2011 7:06 am

Nice Gun '' i gotta get me one of those's''
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Unread postAuthor: linuxexorcist » Sun Jan 02, 2011 11:41 am

Don't Bump old topics, read the rules
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