LP pneumatics - ram exhaust hole size

**Gabe01** · 15th April 2015, 17:05

And flow isn't awful through 3/2 valves when she works, she works well. Jarvis just needs to learn a bit more about pnematics

**Gabe01** · 15th April 2015, 17:04

So pop up a list of parts you have, then we can go through them before you drill any holes

**Danjr1** · 15th April 2015, 18:44

In regards to Flow, I wouldn't know enough about it to comment and a little confused as to why it was mentioned in the first place?! lol

Anyway, the only part I have at the moment is a SMC CDQ2B80-40D double acting cylinder (80mm bore, 40mm stoke). Bought it from ebay a couple of years ago for Â£20. Could have sworn it was 50mm stroke but its nice, compact and should give a decent kick.

The valve would be a simple 12v valve along these lines (http://www.aliexpress.com/item/Free-...986222776.html). Cheap and heavy but should do the job with a decent straight-through flow.

Two 12oz paintball tanks with one as the buffer and a paintball regulator. Assembly would involve attaching the valve directly to the cylinder using a simple "T" shape plumbing arrangement to attach the tanks. Then a small ball valve as a dump and PRV. Return would be via a bungee and the aforementioned drilled hole.

This is purely theoretical at the moment but my aim is a for cheap, simple, compact and reliable flipper that has plenty of shots.

**Gabe01** · 15th April 2015, 19:06

Haha! Now I've got you!

**Gabe01** · 15th April 2015, 19:18

"But flow is awful through common 3/2 valves (I'm planning to use a larger 2/2 NC valve) "

he forgot the word 'the" .....But the flow

**Gabe01** · 15th April 2015, 19:26

I got these from Chris. I have used this system in Legion, now to be fair when it flips its ok. Legion had senile electronics and i neglected to turn on the gas in one fight other than that you get an explosive kick. Flow also uses a low pressure system on these lines and that gives an almighty kick. the secret is QEV quick exhaust valves. Your design might well work but it is a design that is used for high pressure systems.