Sweet! Just ordered both the QEV and the solenoid valve :) Hope they arrive soon! Just need to find a 24vdc power supply... You could use a dc step up converter from 12v etc. https://m.ebay.com/itm/DC-DC-Adjustable-Voltage-Booster-Power-Supply-Step-Up-1-5V-35V-XL6009-/141797927809?nav=SEARCH I use ...

Sweet! Just ordered both the QEV and the solenoid valve Hope they arrive soon! Just need to find a 24vdc power supply...

jackssmirkingrevenge wrote:24V DC 75 bar valve - it should have more than enough flow to pilot a valve like yours.

It says it has a 1mm orifice, seems a bit small? I'm no expert on solenoid valves, but the same seller also has a 70 bar 24v one with an 8mm orifice. It's A LOT more expensive tho.

That's a beauty... are there o-rings around the piston, or is it a cup/parachute type seal? The piston is basically made from two discs, the bottom disc is the PTFE one that seals off the chamber and the top disc which is the one you can see in the pic is aluminum with a plastic ring around it that...

Well it's not a home built valve, i found it in a store that sold anything from used tools to straight up junk and just paid for the brass weight. The piston has a PTFE sealing face and I've never really noticed any leaks from the valve itself. I think that for a valve of it's size the pilot volume ...

Would it vent the pilot fast enough for a 1½" piston valve tho? If so i'm sold!

Well i tried making one from a smooth piece of brass tube, some wire rod, washers and O rings but it's leaking from all sides so that's a shelfer... Any 40+ bars electronic valves out there that would be fast enough to act as a pilot valve?

Yes that's the one i think! Bought some wire rod, washers and O-rings yesterday, gonna try and cobble something together today. If it's really that easy to push open i could probably use some kind of fast acting servo to open it, or maybe even a very small pneumatic piston leaching air from a mini a...

Don't think a toy gun's hammer would do much tho, i even doubt if the hammer mech from an actual gun would do anything as the principle of that is basically the large heavy hammer transferring all it's energy to the firing pin's tiny surface, and the return spring of a firing pin is also pretty weak...

So I got this cannon lying around here basically 80% done and it can also fire with the necessary preparations, but it's still far away from something you can pick up, pull the trigger and shoot. It uses a large piston valve with the hammer valve of an old fire extinguisher to vent the pilot. I can ...

relatively [youtube]https://youtu.be/1jggvn00z7A[/youtube] If i was rich I'd buy two of those, put wheels and a chair on them and drag race them with friends and a few beers :D Seems like a small chamber tho, what valve does that beast use? Maybe a dual burst disc hybrid would work with a Venturi b...

Nice links JSR! At least now i already know that it uses a run capacitor so no need for a start up relay and that i can just remove that smaller drying cylinder as it will just get clogged with moist when i run this thing with regular air :) I actually have an empty CO2 extinguisher tank sitting aro...

My parents recently switched from mobile air conditioning units to a central system, of the 3 mobile units i took apart the oldest one which barely generated any cool air anymore, as it was going to be thrown out anyway. It's a small compressor but it weighed in at over 11kg's! It was basically half...

Oh wow, I posted this like 5 months ago and i haven't visited the forums in a while now. Yet just tonight i was thinking "i wonder if there's anything new on spufiles" and saw this topic at the top of the recent posts list haha! I still have all the parts lying around and i occasionally think about ...

I'm thinking about building a launcher that can lob large projectiles from the shoulder with the least amount of recoil possible. I know that adding any of these systems to an air cannon (Assuming a QEV/piston cannon) adds a large amount of weight, complexity and loss of efficiency. I don't mind thi...