Search found 576 matches

by deathbyDWV
Thu Aug 06, 2009 6:30 pm
Forum: Pneumatic Cannons
Topic: electric vs. pneumatic
Replies: 22
Views: 1279

The easiest way for you to go pneumatic with one sp valve would be to get a saftey release valve that only releases at a higher pressure than your chamber would be filled to and thread it straight into the valve. That way you can pull it open with a string!!! :D Hope this helps.
by deathbyDWV
Thu Aug 06, 2009 9:04 am
Forum: Hybrid Cannons
Topic: MAPP//PRO Question
Replies: 16
Views: 2116

I'm not completely sure because i mostly do pneumatics but i think it's the same as propane. The only difference is that it burns faster. That means MOAR POWER!!! :twisted: I'm not sure what the difference of regular and pro is. Sorry :( I hope this helps. :D
by deathbyDWV
Wed Aug 05, 2009 9:18 pm
Forum: Pneumatic Cannons
Topic: Propane Semi Auto Spud Cannon Design Help!
Replies: 56
Views: 3492

I had never thought about lighting the muzzle blast. That is a good idea and might be safer than having the cloud of propane that could light accidentally. :shock: And it would look sweet!!! :twisted:
by deathbyDWV
Wed Aug 05, 2009 9:10 pm
Forum: Pneumatic Cannons
Topic: Propane Semi Auto Spud Cannon Design Help!
Replies: 56
Views: 3492

Your design will work. I have seen other cannons like this that work. Look in the help section and there is a thread on how to modify a sprinkler valve. You're only problem will be that as propane expands it cools and produces less pressure. Taking shots 2 minutes apart will probably be fine. Just m...
by deathbyDWV
Sun Aug 02, 2009 4:27 pm
Forum: Pneumatic Cannons
Topic: The backpack cannon
Replies: 12
Views: 2174

Thanks but it's not actually my first. It's my first small cannon. The others are large and monsterous.
by deathbyDWV
Sun Aug 02, 2009 12:29 pm
Forum: Pneumatic Cannons
Topic: The backpack cannon
Replies: 12
Views: 2174

Thanks alot. :D This is really my first small cannon.
by deathbyDWV
Sun Aug 02, 2009 12:05 pm
Forum: Pneumatic Cannons
Topic: The backpack cannon
Replies: 12
Views: 2174

The backpack cannon

Here is the cannon i compleated a few days ago. It will launch a rubber ball over 100 yards at 60 psi. I will soon take it up to 100 psi. I want to add a co2 setup but don't have the money now. Currently pump it up with an air compressor or hand pump. I am also going to paint it. So here it is. Vid ...
by deathbyDWV
Wed Jul 15, 2009 10:16 pm
Forum: Pneumatic Cannons
Topic: Landmine test fire vid!!!
Replies: 4
Views: 688

Yeah thanks for the the good response!!! :D Sorry for it being blurry. All my pics and vids are taken from my phone. It takes good pics though.

@ davidvani: DING DING DING DING DING...YOU ARE CORRECT!!!

Also i might be able to try it tomorrow morning if i have time before i leave.
by deathbyDWV
Wed Jul 15, 2009 9:02 pm
Forum: Pneumatic Cannons
Topic: Landmine test fire vid!!!
Replies: 4
Views: 688

Landmine test fire vid!!!

Hey guys. This is my version of the landmine that colty-bear made. Thanks goes to him for sending me the plans very early this morning. I quickly modified them and went to get the parts (also this morning). I just took this vid and sent it to youtube. It's an all around view of it. The only real dif...
by deathbyDWV
Tue Jul 14, 2009 2:08 pm
Forum: Pneumatic Cannons
Topic: Semi/full auto ball valve
Replies: 11
Views: 1154

Yeah kinda but that's used to load the gun. My idea would actually be for the valve.
by deathbyDWV
Tue Jul 14, 2009 1:57 pm
Forum: Pneumatic Cannons
Topic: Semi/full auto ball valve
Replies: 11
Views: 1154

Semi/full auto ball valve

Hey guys. I was just thinking and had the idea to take a ball valve (probably 1") and plug one end of the ball somehow. Then make it where you can spin it a full 360 degrees around and around (it could be spun by a small drill for full auto). Every time it turned around to the back, where a chamber ...
by deathbyDWV
Wed Jul 01, 2009 10:50 pm
Forum: Pneumatic Cannons
Topic: co2 mortar
Replies: 6
Views: 2721

Also because of the large extra amount of air shot out you might be able to make it semi auto by use of a piston that pushes a bolt back on the outside of the gun like most semi/full auto firearms have. :D Just for added complexity because nobody wants to have to reload between shots!!! :D Although ...
by deathbyDWV
Wed Jul 01, 2009 10:30 pm
Forum: Pneumatic Cannons
Topic: co2 mortar
Replies: 6
Views: 2721

I'm not sure how many times i have thought about that idea but never tried it. It's great to finally see someone else build it and make it work! :D MY idea for an improvement was to make it into a gun style (add a stock) and have a trigger that fires a nail on a spring to pop the cartrige open!!! :D...
by deathbyDWV
Wed Jun 17, 2009 10:12 pm
Forum: Pneumatic Cannons
Topic: CO2 at Lowes
Replies: 5
Views: 474

The t shirt launching at the game sounds like alot of fun. I hope you get to do it.
by deathbyDWV
Wed Jun 17, 2009 9:39 pm
Forum: Pneumatic Cannons
Topic: CO2 at Lowes
Replies: 5
Views: 474

CO2 at Lowes

Hey everyone. I was doing my daily roaming of lowes today and i found in the air compressor section that they sell re-fillable CO2 tanks(9 and 20 oz.). You buy a 20 oz tank for about 30 dollars and return it for around 26. They also have a regulator there that is 100 dollars. That is cheaper than mo...