Yesh! Foster fittings are ideal for this, so if your actually building something "finished" I'd highly suggets on using them. I just wanted to point out that normal QD fittings do seem to last at higher pressures, but its always risky going over the recommended pressure limit

Haven't tested them that far, just chucked in some random female quick connect to my fridgy when I wanted to test it out the first time and never bothered to change it to a proper foster fitting

I have used just basic quick disconnects at 40bars without a problem. Only the "disconnecting" needs a bit more force than in normal 8 bar use

Just a small idea. Got for a construction that can hold the full presurre of CO2, just to be sure. Also, CO2 tends to freeze everything and I wouldn't trust PVC as it gets brittle when cold. Search for 3/4" or 1" quick exhaust valve from eBay or similar, that should get you started pretty well. Ther...

I'm testing weighted and unweighted diabolos at 42mm as soon as I have time to print them.

My previous test with diabolos were with 20mm caliber and a coaxial launcher running on unregged co2. Needles to say the PLA rounds flew pretty well but didnt survive on impact hehheh

I have had somewhat of a success with some 3D printed diabolo style slugs, haven't tested those in larger calibers though

European 50mm PN16 PVC pipe has an inner diameter of 42.6mm while a golfball has a diameter of 42.67mm. A nice snug fit

I believe this will not work, as the pressure around the pilot tube thingy will keep the valve shut. I have tested this similar idea with a barrel sealing piston valve snd it also failed to work

The venting is done via 2" camlock at the end of a chamber and as I want the fan to be serviceable I bet its much better to have an RC motor with 40mm rotor than a 40mm PC case fan.... Also dont feel like spending more than 5 seconds for wenting

Quick question.

Brushless RC motor with a 40mm 3 blade quadcopter rotor to went a 7.8 Liter combustion chamber? Good or bad idea?

You need a so called "led flasher relay" which operates at much lower load than the normal. Got few from ebay for under 1$ each

Oiled wood is always pretty! Now just apply a thick coat of beeswax, let it sit for an hour and then buff the heck out of it with a soft rag, it's going to be shiny! Here's few more pics of the axe, have done few back in the day but I think this one is the best so far https://scontent-arn2-1.xx.fbcd...

I lately have been busy rebuilding my bike and upkeeping my truck while trying to fund all this, but there's always a bit of time for knife making! Well, for maybe not exactly knife making, but I made an axe for my coworker, that should count as something! https://scontent-arn2-1.xx.fbcdn.net/v/t1.0...

The problem with supersonic spuds is the strenght of the projectile. You'd need so large acceleration forces that a simple spud without a decent wadding would never stay in one piece. With a given 300$ budged you'd easily build a hybrid launcher capable of launching a given projectile supersonic. Th...

It IS worth the effort! Few years back I restored an old Sako hunting rifle stock which was walnut and looked a lot like that stock. It was very satisfying to reveal the beautiful fresh wood grain under the old and cloudy lacquer!