Daltonultra wrote:You know what would be cool? Use a piece of plexi as a wad, so you can look through it and see the combustion in the firing chamber as it's slammed up the barrel.

oh cool. Yeah thats a good idea

I have a little camera with battery onboard its small and all self contained so it will work. Its been lying around for ages so if I don't find it its not a big deal. As long as the video records. I figure I could put some wadding underneath it to prevent the lense from getting burned upon firing. I...

This is really late for this post, but i'm pretty new here and wanted to say that this is some extremely clean work with a lot of intelligence put forth into the design. As clean as clean can be, and the colors are great as well! Very Inspirational. Oh...and THREE of them??? Thats just a lot of work...

OK, so I have a little wireless camera for my RC helicopter that im thinking about stuffing inside a small model rocket and launching it out of my spudder. Camera would be facing downward and mounted in the body of the rocket. The rocket would have fins of course so it ought to fly straight up. I th...

Went out shooting and I am totally impressed by the power of this freakin thing. lemons just go so far its absurd lol. Build yourself a good golfball barrel...5 - 6 ft or so and a little burst disk setup. Shoot yourself a few golfballs. While very impressive, it's actually a little scary... :shock:...

Went out shooting and I am totally impressed by the power of this freakin thing. lemons just go so far its absurd lol.

I have a big 2" ball valve like the one you pictured above. I use a high performance 80mm PC fan, its totally insane lol. The "Vantec Tornado" is what its called and it exhausts the chamber in like 3 seconds. I'll get my camera from my wife and put some pics up. I also made a screw on section at the...

OK damn! I just built a new one with chamber fan and 3 spark gaps, havent fired anything through it yet, but dry fired it and the bang is way the hell more violent than before. It hurts my ears now where before it didnt. Can't wait to shoot something through it, its late and dark though and my neigh...

I was just wondering what would happen if I essentially made a pipe bomb out of ABS cellcore, but instead of gunpowder i'd use propane. This would be a good test to see what would happen if a chamber actually failed for some unlikely reason, and might be a bit fun as well (behind a blast shield of c...

Thanks for replies. I used PVC.

How do you think carbon fiber would do in a combustion chamber? I'm planning on using a thin strip of it for the backing of a spark strip. Would it warp or bend from the heat?

the reason I was thinking acetylene was because I wanted something with excellent power, yet simple to use. From what i'm seeing it sounds like acetylene is just nto a good fuel to use in any case really. Sounds like for more power i'll just have to make a well optimised advanced combustion. Maybe t...

I have received some good advice on this forum about combustion cannons. I want to make one capable of handling pure oxy/acetylene fuel mixtures. Do people already do this? If so, what material do they use? I want to make a powerful combustion spudder that has all the goodies, like chamber fan (repl...

In a 4" cleanout/pipe chamber joint, I simply grind the corners of an 80mm computer fan and hot glue it in. Hot glue holds well enough but certainly isn't a permanent type cement in case you need to replace the fan. Configure the fan to blow in to the chamber and out the barrel. This allows just ab...

Just saw this. Thats not a spud gun by any means. Thats a compressed gas powered, smooth bore firearm. Impressive to say the least, but you can't exactly play with that anywhere besides a firing range or the great planes of Mars. If he rifled that barrel and added a scope, it looks like it could riv...