Directional Control Valves (3way valves and stuff like that)

[palanit]

how many pounds of force do i want. i dont think that i would need that much, since all its doing is pushing a 4.5mm metal bb. also, do i want to get a nose mount of a pivot mount air cylinder

[sgort87]

You'll also have to consider the forces of friction that may occur when making any seals it will need. This will depend on whatever your design is.

[palanit]

Does anyone know where to find an air cylinder who's rod is no more than 4.5 mm (.177 inches)

[sgort87]

Yep. On that link I sent you.

Look at the 5/32" bore ones. There are two options in there: 1/4" or 1/2" stroke length.

The only problem is that you'll need to find a little hose and connectors to get pressure to the cylinder. McMaster should have them, but I know little about small lines.

[Lockednloaded]

Anyone with any experience with the spool type manual DCVs: is I used one as my main valve, would my shots vary slot depending on how hard I can push the trigger, or should it be fairly consistent?

P.S.
I plan on using a 1/4" manual push button spool valve to fire .177 pellets

[POLAND_SPUD]

Does anyone know where to find an air cylinder who's rod is no more than 4.5 mm (.177 inches)

if you can't find one you can attach a 4.5 mm rod to the rod of cylinder

I am not in the mood for spoonfeeding you know ->
check pages 7-12 and 83
http://clippard.com/downloads/general/P ... inders.pdf

[palanit]

im trying to make a semi auto gun, with a portable air tank that will hold a lot of pressure. i dont want all of the pressure from the air tank feeding into the chamber right after i hook it up. i want to be able to control every shot and have consistent power (like 50 psi every shot). i was thinking about getting a two gauge air regulator, is this a good idea or is there a better way to do this

[POLAND_SPUD]

sure it will work - you just need a regulator

[sgort87]

Dude, Palanit, I don't mean to sound impolite, but maybe you should start with something a little more simple until you learn some basics.

[palanit]

I already have. I have built pneumatic cannons with ball valves, sprinkler valves, and piston valves. This is what I want to do next. I have just never used air cylinders or qevs. I also just don't want to buy the wrong partaking and waste money. That is why I am asking you guys questions and I appreciate the help. I have one final question. I was previously going to use propane as a portable source. However I am learning that propane may not be that good of a source. I'm either going to use propane or co2, which do you guys think will be better. I want to be able to get a lot of shots per tank

[palanit]

I just made a new topic http://www.spudfiles.com/forums/viewtop ... tml#353853. You guys have been a great help to me so far and would truly appreciate it if you guys continued to do so.
Thanks

[jpalf1]

very,useful info for a beginner such as myself.The links are great as well.Thankyou.(you won't believe this but as i was reading,my fridge comp started to die)another mission.Thanks for the help.