Search found 7 matches

by wafen
Sat Mar 14, 2020 2:23 am
Forum: Pneumatic Cannons
Topic: Large commercially available exhaust valves
Replies: 6
Views: 2263

Re: Large commercially available exhaust valves

Perhaps pneumatic direcional valve for IG541 fire suppression system can do it,as it can handle 2,500psi at 3' or 750 psi at 6'
by wafen
Wed Feb 26, 2020 12:04 pm
Forum: Miniature Guns
Topic: For help!A reverse engineering of ETG
Replies: 4
Views: 1382

Re: For help!A reverse engineering of ETG

Note that it could be difficult and dangerous to make such a stuff.If you just want something can shoot,built an air gun is a better idea for you,as it is easy to make and operate.
by wafen
Sun Jun 30, 2019 1:35 am
Forum: Pneumatic Cannons
Topic: Modifed Angle seat piston valve Pneumatic Cannon
Replies: 3
Views: 2583

Modifed Angle seat piston valve Pneumatic Cannon

I've built this one a few months ago .Originally it was designed as a ropethrower for rescue purpose,etc but it can also launch many other shell. Basic data weigh appr.6kg/14lb length 1.3meter/51in chamber volume 1.45L/88in3 muzzle speed /at 1.2Mpa/175psi,CO2 ropethrowing shell 50mm/250gram 55m/s or...
by wafen
Thu Oct 25, 2018 7:57 pm
Forum: Pneumatic Cannons
Topic: Low cost High pressure compressor
Replies: 17
Views: 1720

Re: Low cost High pressure compressor

Well,exactly they are much cheaper in China. https://item.taobao.com/item.htm?id=564983254559&ali_refid=a3_430585_1006:1106453081:N:%E9%AB%98%E5%8E%8B%E6%B0%94%E6%B3%B540mpa+%E7%94%B5%E5%8A%A8:cd5a9a0d37f2f659b2068fc87f821f3c&ali_trackid=1_cd5a9a0d37f2f659b2068fc87f821f3c&spm=a230r.1.14.3#detail *Th...
by wafen
Sat Nov 25, 2017 3:05 pm
Forum: Miniature Guns
Topic: An syring-based laucher
Replies: 4
Views: 1387

Re: An syring-based laucher

Thank for your guys supporting me.Here are some more photos,hope them can help you if you wang to try it :D
by wafen
Fri Nov 24, 2017 3:01 am
Forum: BB, Airsoft, and Pellet Guns
Topic: Barrel for 4mm or 5mm steel balls
Replies: 14
Views: 1258

Re: Barrel for 4mm or 5mm steel balls

You may use the 4*6 PTFE tube,or gel ink refill and make them up by tape.
I've used the gel ink refill as barrel in my program
http://www.spudfiles.com/miniature-cann ... ml#p383803
by wafen
Sat Nov 18, 2017 3:11 pm
Forum: Miniature Guns
Topic: An syring-based laucher
Replies: 4
Views: 1387

An syring-based laucher

Recently I've found that a syring [or a injector] could fit well with the 6*4mm[.25*.15in]plastic tube and it could use as a mini cannon.It is easy to bulit and could be use for a lot of times.The one I'm using now has operated for about 1,000 times ,and it's still operationable.The metal barrel was...