Search found 239 matches
- Mon Nov 01, 2010 12:16 am
- Forum: Pneumatic Cannons
- Topic: Compressing propane experiment completed
- Replies: 16
- Views: 2588
I believe he was using propane because the amount of potential energy stored in liquid form is much higher than a tank at the same pressure but with a gas in vapour form. Think about this: The pressure in the chamber got to 200 PSI. that is the vapor pressure in those conditions. When you open the v...
- Sat Oct 30, 2010 3:10 am
- Forum: General How-To & Discussion
- Topic: Topeak JoeBlow Ace 3 Stage 260 psi Floor Pump
- Replies: 18
- Views: 5293
I've found a pump called the jet black littlefella in australia for $35 that pumps to 260 PSI. But like freak said the nature of the ace 3 is its ability to pump quickly AND at high pressure. Also I bet the ace could go a lot higher than 260. Whereas those cheaper ones will max out at a lower pressu...
- Wed Oct 27, 2010 10:08 am
- Forum: Off-Topic Hobbies
- Topic: Geometry Question
- Replies: 17
- Views: 3068
- Wed Oct 27, 2010 1:46 am
- Forum: BB, Airsoft, and Pellet Guns
- Topic: Direct Feed Airsoft MG project
- Replies: 23
- Views: 6450
- Tue Oct 26, 2010 11:20 pm
- Forum: BB, Airsoft, and Pellet Guns
- Topic: Direct Feed Airsoft MG project
- Replies: 23
- Views: 6450
Just coil a bunch of the tube in a box mag. I thought that was what you were doing anyway. Nothing will be more efficient than coiling it up in an organised way in a box. EDIT I see the air inlet is not from the mag tube but from the side... Make a box mag with coiled tube and make an attachment to ...
- Tue Oct 26, 2010 9:40 pm
- Forum: Pneumatic Cannons
- Topic: GGDT Supersonic Prediction?
- Replies: 10
- Views: 3195
- Tue Oct 26, 2010 12:12 am
- Forum: General How-To & Discussion
- Topic: My first attempt at soldering copper.
- Replies: 15
- Views: 5851
- Tue Oct 26, 2010 12:08 am
- Forum: Pneumatic Cannons
- Topic: Vinyl valve hose
- Replies: 8
- Views: 1312
- Mon Oct 25, 2010 8:08 pm
- Forum: BB, Airsoft, and Pellet Guns
- Topic: Incorporation of hopup...
- Replies: 19
- Views: 5396
There is a particular pressure washer on ebay that I recommend to everyone and thats this one: http://cgi.ebay.com.au/BRAND-NEW-High-Pressure-Water-Gun-Cleaner-Air-Tools-/310264614152?pt=LH_DefaultDomain_15&hash=item483d364d08#ht_1604wt_992 They sell heaps of them and I have tested to a little over ...
- Mon Oct 25, 2010 5:17 am
- Forum: BB, Airsoft, and Pellet Guns
- Topic: Incorporation of hopup...
- Replies: 19
- Views: 5396
The problem with the screw design is that it will either not put on much spin, or it will completely block the barrel. Why? Look at airsoft hopup designs. The thing that pushes against the bucking (the rubber around the barrel) is pushed down by another little nub of rubber, this little nub is pushe...
- Mon Oct 25, 2010 2:11 am
- Forum: BB, Airsoft, and Pellet Guns
- Topic: Incorporation of hopup...
- Replies: 19
- Views: 5396
- Sun Oct 24, 2010 2:24 am
- Forum: Pneumatic Cannons
- Topic: Ring Piston
- Replies: 4
- Views: 1131
- Sun Oct 24, 2010 1:53 am
- Forum: BB, Airsoft, and Pellet Guns
- Topic: Low Pressure CO2 semi auto QEV design
- Replies: 5
- Views: 3399
- Sat Oct 23, 2010 8:57 pm
- Forum: Pneumatic Cannons
- Topic: HP Large-Bore
- Replies: 17
- Views: 5949
- Thu Oct 21, 2010 11:57 pm
- Forum: General How-To & Discussion
- Topic: Failed attempt at a silent TB launcher
- Replies: 33
- Views: 8318
You need to understand what makes the noise in the first place in order to understand how it is silenced, Hilo. Spudguns make a bang because the gas that pushes the projectile out of the barrel is at a different pressure to the atmosphere, even after it leaves the barrel. When you fire a spudgun, th...