Search found 270 matches
- Thu Jul 22, 2010 11:26 am
- Forum: General How-To & Discussion
- Topic: launcher design
- Replies: 45
- Views: 8778
- Thu Jul 22, 2010 11:11 am
- Forum: General How-To & Discussion
- Topic: launcher design
- Replies: 45
- Views: 8778
- Wed Jul 21, 2010 2:20 pm
- Forum: General How-To & Discussion
- Topic: launcher design
- Replies: 45
- Views: 8778
JSR, did you find that link on the Firearm Blog, because I was just on Pascal's page before I saw this thread! I agree, some of the physics are questionable, not so much for the Thor, but the Epic A1 seems a little too sci-fi. However, a solenoid barrel may be possible in the future, especially cons...
- Tue Jul 20, 2010 11:38 am
- Forum: Combustion Cannons
- Topic: Powering ignition and chamber fan.
- Replies: 10
- Views: 2969
- Mon Jul 19, 2010 4:34 pm
- Forum: Combustion Cannons
- Topic: 16.4 Ounce Containers for a Combustion Cannon
- Replies: 22
- Views: 5880
8-10 feet? For the barrel, or just the chamber? Because if you mean the chamber, that's going to be one powerful combustion cannon! Usually these things don't have a whole lot of recoil. At least, not as much as you would expect. You could build a stand out of PVC, but make sure it has a large enoug...
- Mon Jul 19, 2010 1:57 pm
- Forum: Combustion Cannons
- Topic: 16.4 Ounce Containers for a Combustion Cannon
- Replies: 22
- Views: 5880
The fan survives the combustion because it is very quick. Although the combustion produces a few thousand degrees of heat, it only does so for a small fraction of a second, so the fan can survive it. The only time a fan won't survive is in high-power hybrids. I would not run your ignitor/chamber fan...
- Mon Jul 19, 2010 1:12 pm
- Forum: Combustion Cannons
- Topic: 16.4 Ounce Containers for a Combustion Cannon
- Replies: 22
- Views: 5880
- Mon Jul 19, 2010 1:08 pm
- Forum: Combustion Cannons
- Topic: 16.4 Ounce Containers for a Combustion Cannon
- Replies: 22
- Views: 5880
Welcome to Spudfiles! I believe Coleman canisters have the same threads as the blue propane tanks, so you could use those. However, I'm not sure, but I think they are a slightly different mixture of fuel. If you just calculate for propane, the Coleman canisters should work. And yes, you could run a ...
- Sun Jul 18, 2010 12:44 am
- Forum: General How-To & Discussion
- Topic: Water/steam as propellant?
- Replies: 8
- Views: 2557
Water/steam as propellant?
Could you possibly increase the power of a combustion cannon by loading it with a cartridge containing regular water before the projectile? My theory is that you could possibly use a smaller chamber and still achieve the power of a larger cannon. Upon combustion, that water would (in theory) flash t...
- Thu Jul 08, 2010 8:33 pm
- Forum: Hybrid Cannons
- Topic: Hybrid Valve design
- Replies: 12
- Views: 2118
@jhalek90 - I believe you misinterpreted his design. There is no pressure between the two pistons at any time, so it would work. The cone shaped piston at the front is the only piston exposed to the chamber pressure, and upon ignition, it pushes back, uncovering the two openings in the side. The two...
- Wed Jul 07, 2010 5:53 pm
- Forum: Pneumatic Cannons
- Topic: Pressure rating...
- Replies: 7
- Views: 2273
This question has been asked before - I asked it. The responses I got were that it could hold well above 150psi, more in the range of 1kpsi, and as theBOOM stated, DYI's cannon was constructed of standard fittings, and I believe he even used a plastic barrel. Pressure ratings usually use somewhat hi...
- Fri Jun 18, 2010 10:28 pm
- Forum: Off-Topic Hobbies
- Topic: Smart dog and cool machine
- Replies: 1
- Views: 762
- Thu Jun 10, 2010 9:53 pm
- Forum: Combustion Cannons
- Topic: ignition for my combustion
- Replies: 42
- Views: 6997
That would be a very sufficient ignition source, however I would advise against it. Neon sign transforms usually wear out eventually, and most, if not all of them require an AC power source, which means you would either have to bring a generator with you wherever you fired the cannon, or you would h...
- Thu Jun 10, 2010 12:38 am
- Forum: Pneumatic Cannons
- Topic: Pneumatic Cannon
- Replies: 4
- Views: 1235
In terms of connecting the tank to the sprinkler valve, do you mean the C02 tank, or the chamber? If you are referring to the C02 tank, this will not work. Discharging an entire C02 tank at once through a sprinkler valve will be inefficient, dangerous, and provide mediocre performance at best. You w...
- Fri Jun 04, 2010 8:52 pm
- Forum: Combustion Cannons
- Topic: "New" Fuel Has anyone seen / used this?
- Replies: 17
- Views: 4998