SpudFiles

Sorry I didn’t see that that was a sticky for these questions. Feel free to delete this one

Hello,

Would someone be able to run a few GGDT scenarios for me? I’d like to compare a pneumatic with a 3” ball valve vs a 3” air actuated sprinkler valve vs a 3” piston valve. I recently spent quite a lot of money on a 3” sprinkler valve and I’m curious to see how it would have compared to the other options.

Projectile is a tennis ball. Barrel length is 30”. Air tank size is 18” of 3” PVC.

Somewhat related, are there are any plans to move the GGDT to a web platform? Nowadays I use my phone and tablet for everything except for work.

The critical parameter here is valve opening time, and you can't really run a GGDT simulation without it.

If you are actuating a ball valve manually, it's certain that the projectile would have left the barrel well before the valve is fully open.

If on the other hand you are actuating it with a spring (a very old idea) or something similar then it could compete, here is an example"



You could definitely build it for cheaper, but it's going to need quite substantial construction in order to retain and release a sufficiently powerful spring, so I would say that objectively the sprinkler valve was a better option.