Search found 3496 matches

by Brian the brain
Wed Nov 30, 2016 2:02 pm
Forum: Pneumatic Cannons
Topic: " Old Shatterhand" 5 shot mag now cycling on vid.
Replies: 234
Views: 89442

Re: " Old Shatterhand" 5 shot mag now cycling on vid.

Search for "snelontluchter"
by Brian the brain
Thu Sep 22, 2016 12:29 pm
Forum: Pneumatic Cannons
Topic: B2TB: sawed-off 35 bar repeater
Replies: 37
Views: 15996

Re: B2TB: sawed-off 35 bar repeater

Without this forum I'd never gotten this far. We all feed off each other. But thanks...you have seen this one right? [youtube][/youtube]
by Brian the brain
Thu Sep 22, 2016 12:25 pm
Forum: Pneumatic Cannons
Topic: " Old Shatterhand" 5 shot mag now cycling on vid.
Replies: 234
Views: 89442

Re: " Old Shatterhand" 5 shot mag now cycling on vid.

It remains unchanged... Haven't had any time lately to work on any of my designs.
by Brian the brain
Fri Jun 17, 2016 2:09 pm
Forum: BB, Airsoft, and Pellet Guns
Topic: BFG #7
Replies: 57
Views: 22226

Re: Semi automatic ideas?

This was my idea...although it can be set to full auto aswell.
[youtube][/youtube]
by Brian the brain
Tue May 10, 2016 1:12 pm
Forum: Off-Topic Hobbies
Topic: So... who's about?
Replies: 8
Views: 4125

Re: So... who's about?

I'm not here.Ever.
:D
by Brian the brain
Wed Apr 27, 2016 7:31 am
Forum: Pneumatic Cannons
Topic: 6mm Bolt Action Bullpup
Replies: 17
Views: 8905

Re: 6mm Bolt Action Bullpup

It sounds very cool! Performance should go up with a longer barrel and higher pressure. Already it seems like a fun plinker! Personally, I would have turned the fittings in such a way that the reservoir would run out the side so the barrel could be set much lower. another way to improve power would ...
by Brian the brain
Tue Apr 19, 2016 1:04 pm
Forum: Pneumatic Cannons
Topic: hammer valves versus...
Replies: 6
Views: 4074

Re: hammer valves versus...

I keep seeing high power hammer valves in factory pneumatics so I am trying to clarify why we build a hammer valve to pilot a qev, other than it seems elegant Flow. With a hammervalve piloted QEV you'll be able to get full flow in , say, a 3/4" inch barrel, at high pressure. Depending on the size Q...
by Brian the brain
Tue Apr 19, 2016 12:57 pm
Forum: Pneumatic Cannons
Topic: SA/FA Pnushnikov/Caselman-build log.
Replies: 76
Views: 30171

Re: SA/FA Pnushnikov/Caselman-build log.

Weak is relative. It's easy to cock but the spring is strong enough to load the ammo. What I meant was, because of the balanced valve I don't need a bulky, powerful spring to knock open the valve.Normally at these pressures a hammervalve with an opening this big would be impossible to knock open.......
by Brian the brain
Fri Apr 15, 2016 11:02 am
Forum: Pneumatic Cannons
Topic: hammer valves versus...
Replies: 6
Views: 4074

Re: hammer valves versus...

depends on what you call messy


Below two multishot launchers I made..

Hammervalve piloted coaxial pistonvalve:
Image

Hammervalve piloted QEV:

Image
by Brian the brain
Fri Apr 15, 2016 10:35 am
Forum: Pneumatic Cannons
Topic: SA/FA Pnushnikov/Caselman-build log.
Replies: 76
Views: 30171

Re: SA/FA Pnushnikov/Caselman-build log.

I'm assuming you are referring to the ROF dropping slowly in full-auto mode? about wasting air: While it pancakes 10mm leadballs like other powerful airguns the semi/full auto action uses only a fraction of air to recock. It's designed that way. My design uses a balanced valve with very high flow ( ...
by Brian the brain
Fri Mar 04, 2016 1:15 pm
Forum: Combustion Cannons
Topic: Spudgun won't ignite even with blowing into chamber
Replies: 6
Views: 4525

Re: Spudgun won't ignite even with blowing into chamber

Hi Tijn

you need to know that in Holland a combustion launcher is concidered an illegal firearm.
That alone should be reason enough to switch to pneumatics.

Tenminste...als je slim bent...
by Brian the brain
Thu Mar 03, 2016 3:11 pm
Forum: Pneumatic Cannons
Topic: SA/FA Pnushnikov/Caselman-build log.
Replies: 76
Views: 30171

Re: SA/FA Pnushnikov/Caselman-build log.

Haven't worked on in in a while, so it's not yet running on 12 grams. It's a partially balanced hammervalve. It only needs a gentle tap to open while the valveport is huge and so is the pressure. The hammer is in fact a piston.When it hits the valve, pressure flows through the small gap between the ...
by Brian the brain
Mon Dec 14, 2015 1:16 pm
Forum: Pneumatic Cannons
Topic: SA/FA Pnushnikov/Caselman-build log.
Replies: 76
Views: 30171

Re: SA/FA Pnushnikov/Caselman-build log.

On page 3 you'll find this one...
[youtube][/youtube]
by Brian the brain
Fri Dec 11, 2015 2:42 pm
Forum: Pneumatic Cannons
Topic: SA/FA Pnushnikov/Caselman-build log.
Replies: 76
Views: 30171

Re: SA/FA Pnushnikov/Caselman-build log.

LOL...not worried at all mate. Any experience you might have is irrelevant I'm afraid. The thing is....the valve I am using is quite unique. Pressure is just full-on unregulated CO2...around 1000 psi, while the flow of the valve is enourmous compared to a commercial airgunvalve. I've counterbalanced...
by Brian the brain
Thu Dec 03, 2015 11:37 am
Forum: Pneumatic Cannons
Topic: SA/FA Pnushnikov/Caselman-build log.
Replies: 76
Views: 30171

Re: SA/FA Pnushnikov/Caselman-build log.

Not that far off with your guesstimate mate, should be able to get around 11 - 12 rounds off depending on how much you're charging the build with. This project is unbelievably nice dude, such a great example of spudding ingenuity Thanks for the compliment ..but why do you assume to know the number ...