Search found 2599 matches

by Hotwired
Mon Aug 08, 2016 8:14 pm
Forum: Pneumatic Cannons
Topic: Co2 Cartridge Help
Replies: 3
Views: 495

Re: Co2 Cartridge Help

Slamming a CO2 cartridge into a hollow needle will give truly miserable flow. If you are firing BB's this might be acceptable but then why violently puncture the cartridge at all. This is how people smash the sealing disk with a spiked piston to blow out a parachute for a rocket/uav with the vented ...
by Hotwired
Fri Mar 14, 2014 8:20 am
Forum: Pneumatic Cannons
Topic: Seven barrels in a coaxial ? Volly gun concept ?
Replies: 22
Views: 1856

Re: Seven barrels in a coaxial ? Volly gun concept ?

Main question is why not just fire a bunch of pellets like a shotgun from one barrel.
by Hotwired
Sat Feb 22, 2014 10:34 pm
Forum: Pneumatic Cannons
Topic: New Compact Cheap source of HPA???
Replies: 3
Views: 3274

Re: New Compact Cheap source of HPA???

No.

By the look and sound of it it's a battery powered high speed fan which is enclosed to produce an air jet.

Pressure will be trivial, it's only moving dust.
by Hotwired
Fri Jan 31, 2014 9:14 am
Forum: Pneumatic Cannons
Topic: Ugly Blowguns
Replies: 9
Views: 651

Re: Ugly Blowguns

Heh. I'd like to but I'm not in a great position for covert cannoneering. Wasn't much opportunity when I made it and even less now. Still have ideas for creative medium cannons but unless I move to the country with a small attached wood it's really not worth it. Currently in a terrace with another t...
by Hotwired
Fri Jan 31, 2014 8:17 am
Forum: Pneumatic Cannons
Topic: Ugly Blowguns
Replies: 9
Views: 651

Re: Ugly Blowguns

Depending on how accessible things are for you, low temperature melting plastic can be a good material to shape things from. Often sold as Polymorph it's original name is Polycaprolactone, can be softened with hot water, hot air gun, microwave into a soft treacle like state which sticks viciously to...
by Hotwired
Tue Jun 25, 2013 5:13 pm
Forum: Pneumatic Cannons
Topic: pneumatic locksmithing?
Replies: 19
Views: 1108

So why does your mother have a sprung latch with a key slot on both sides? If it's not sprung how was it locked with the key on the inside? If it is sprung with a key slot both sides it can happen again, replace it with a nightlatch which only needs a key from the outside. From the inside its a knob...
by Hotwired
Sun Jun 23, 2013 10:03 pm
Forum: Pneumatic Cannons
Topic: pneumatic locksmithing?
Replies: 19
Views: 1108

Only way a pneumatic cannon is going to unlock a door is if you load it with a beanbag and blow the lock off.
by Hotwired
Wed Jan 23, 2013 3:32 am
Forum: Off-Topic Hobbies
Topic: "Offtopic-posts-topic" NSFW
Replies: 6608
Views: 238359

dingdingdingdingdingdingdingdingdingdingBOOM 8)
by Hotwired
Mon Jan 21, 2013 6:49 pm
Forum: Pneumatic Cannons
Topic: Using a QEV with the chamber and the supply as one ?
Replies: 15
Views: 1289

wyz2285 wrote:By filling up the blocked end, short pressure drop trigger a small burst. Putting it back to position, exhaust the air trapped in the blocked end, preparing for another shot. I'm on my phone, can't make a diagram.
http://www.spudfiles.com/forums/viewtop ... tml#110053
by Hotwired
Tue Jan 08, 2013 9:41 am
Forum: Pneumatic Cannons
Topic: Experimenting with a REAL DIY vortex cannon!
Replies: 47
Views: 15309

I'd be interested in how much gas the vortex carries from the chamber with it. Would be interesting if it could transport combustible gas from a pneumatic chamber to a target. A kind of container free FAE launcher. Massive losses on the way I'd expect but not of anything very expensive. Believe the ...
by Hotwired
Tue Dec 04, 2012 8:00 am
Forum: Combustion Cannons
Topic: How to: Make a stun gun with a disposable flash camera
Replies: 151
Views: 59000

Yup but as I said 1300V is way too high. Look for a 2 pole one with about a third of that voltage rating and it will all work. The circuit is not designed for a voltage that high, you can see I've specified a 400V capacitor and a 350V spark gap. A 1300V spark gap does not compute if the circuit outp...
by Hotwired
Sun Jun 03, 2012 1:10 am
Forum: Off-Topic Hobbies
Topic: Ideas for Pneumatic Cylinders
Replies: 2
Views: 404

Pneumatic catapult

Ram -> lever -> projectile
by Hotwired
Wed May 02, 2012 2:52 am
Forum: Hybrid Cannons
Topic: Hybrid without bursting disc
Replies: 15
Views: 2358

Every time I post this I have to go search for my posts containing the word "pancake" because I can never find the page it's on :P http://www.spudfiles.com/forums/files/spring_688.jpg But yeah, springs are bad, mmkay? In terms of practical hybrid bumpers, they rate slightly above small woodland cre...
by Hotwired
Thu Apr 12, 2012 5:27 pm
Forum: Off-Topic Hobbies
Topic: "Offtopic-posts-topic" NSFW
Replies: 6608
Views: 238359

Speaking of uksgc, is it just me or has the site been shut down? http://www.uksgc.co.uk/ Says "account suspended" on my end. I haven't been there in months so I wouldn't know what was going on. It's been down a long while now. Nothing positive was going on there anymore so the owner/host stopped ke...
by Hotwired
Wed Apr 11, 2012 8:31 am
Forum: Pneumatic Cannons
Topic: semi blowgun!!!
Replies: 23
Views: 7775

shannydez wrote:i guess using such type of stuff is much better with less effort, what do you think?
I think you're a bot.