boytonstu,
I sent you an email (not a PM- an actual email) about your invention. - Hope it helps.
Search found 43 matches
- Sun Mar 27, 2011 4:21 pm
- Forum: Off-Topic Hobbies
- Topic: Another Thingy Invention
- Replies: 89
- Views: 19024
- Sun Mar 06, 2011 4:07 pm
- Forum: Pneumatic Cannons
- Topic: Max preassure on "quick connect fittings" and more
- Replies: 11
- Views: 3022
- Sat Mar 05, 2011 11:05 am
- Forum: BB, Airsoft, and Pellet Guns
- Topic: Nerf Vulcan BBMG hopper help.
- Replies: 7
- Views: 3040
Re: Nerf Vulcan BBMG hopper help.
I am converting my NERF Vulcan into a BBMG. It's powered by CO2 and uses a compressor blowgun. It is not a vortex gun, it's just straight fed. I need help coming up with a hopper or feeding mechanism of some sort. I've thought of many ideas, but so far, non of them will work. Any suggestions? Ooh! ...
- Sat Mar 05, 2011 5:03 am
- Forum: Ammo & Parts
- Topic: Frozen Spuds & Such
- Replies: 16
- Views: 4621
Any time you "harden" your ammo you make it more destructive. Anything solid. Thing like oranges, lemons with a pulp texture tend to mush. I've all ways wanted to freeze a egg and try it but I have a 1" bore ... :wink: jrrdw - Have you ever tried a piece of #8 rebar? Nominal Diameter is supposed to...
- Sun Feb 13, 2011 12:08 am
- Forum: Pneumatic Cannons
- Topic: What fits in a 1/4" copper tube?
- Replies: 4
- Views: 1513
- Wed Feb 09, 2011 9:35 pm
- Forum: Combustion Cannons
- Topic: N33b who needs some pro help
- Replies: 22
- Views: 5660
From what I see playing around with HGDT's range calculator, it seems unlikely that such a projectile is going to reach 500 yard range without assistance from wind or topography. Even with a fairly optimistic drag coefficient of 0.5, it doesn't look like a potato is heavy enough. It might be possib...
- Wed Feb 09, 2011 7:28 pm
- Forum: Combustion Cannons
- Topic: N33b who needs some pro help
- Replies: 22
- Views: 5660
Cut a full-grown pumpkin open and you'll find the center mostly hollow, so your comparison of throwing a rock as opposed to throwing a handful of sand, is not even close to comparing a spud next to a pumpkin. I had mentioned freezing a pre-cut potato slug, but only to help prevent the potato from sh...
- Wed Feb 09, 2011 1:45 pm
- Forum: Combustion Cannons
- Topic: N33b who needs some pro help
- Replies: 22
- Views: 5660
As previously stated on this forum it's a shame sometimes that people put so much effort into their launchers while neglecting the projectile itself - ie if its performance you seek, it's no use building the best combustion ever if you still insist on firing potatos... I also agree that people who ...
- Wed Feb 02, 2011 3:01 am
- Forum: Hybrid Cannons
- Topic: Hybrid Fueling Spreadsheet
- Replies: 19
- Views: 5077
Hybrid Spreadsheet v1.0
First attempt (ever) at making a spreadsheet... Not too easy, when you don't have the slightest clue as to what you're doing! Geez!... I barely figured out how to save something as a .zip file, just so that it could be added as an attachment to this post... Sucks, not to be computer-savvy. The file ...
- Thu Jan 27, 2011 1:53 am
- Forum: Combustion Cannons
- Topic: new to site and need some tips...
- Replies: 16
- Views: 5373
Uh... your link to a 60ml syringe will only yield a 2.8% fuel mixture -jackssmirkingrevenge wrote:*cough*
- Wed Jan 26, 2011 5:36 pm
- Forum: Combustion Cannons
- Topic: new to site and need some tips...
- Replies: 16
- Views: 5373
- Wed Jan 26, 2011 12:55 pm
- Forum: Combustion Cannons
- Topic: new to site and need some tips...
- Replies: 16
- Views: 5373
Your C:B ratio is 1.36:1 A larger ratio such as this will produce a loud report, but a larger report doesn't equate to a more powerful cannon. Your chamber volume is actually large enough to support a 7-1/2' long barrel of 1-1/2" pipe. Spray-n-pray is not the ideal method for fueling a launcher, eve...
- Tue Jan 25, 2011 9:55 pm
- Forum: Hybrid Cannons
- Topic: hybrid fueling
- Replies: 24
- Views: 6645
With 2BAR of compressed air and (about) 2psi of propane in the chamber, his mix was only 4.535% ...(Again: "about") The only thing to really worry about, is that the peak combustion pressure of successfully igniting a mixture as he's described, is slightly over 300psi. ... Well, actually ; I do have...
- Mon Jan 24, 2011 8:00 pm
- Forum: General How-To & Discussion
- Topic: SketchUp questions and new gun preview
- Replies: 5
- Views: 1998
- Sat Jan 08, 2011 12:28 am
- Forum: Pneumatic Cannons
- Topic: sprinkler leaking through pilot exhaust when pressurized
- Replies: 14
- Views: 4593
Thanks for the reply No, the sprinkler valve is attached correctly (i.e., arrow is pointed towards the barrel). The gun fires fine, but the air leaks out of the pilot exhaust valve stem, so you need to fire it before the air all leaks out. <b>I'm not sure what you mean by # 2... how would this make...