Pneumatic

You can see where the ram is better in this pic

http://www.bugs.nl/media/album/view.php?&path=L3J3L3J3Ny91ay1hZGFtLWNsYXJrLzEwMV8 wMTEzLkpQRw==http://www.bugs.nl/media/album/view....LWNsYXJrLzEwMV 8wMTEzLkpQRw==

Its well worth running your designs through Noels flipper calculator, otherwise you might end up with a nice looking setup that could work so much better.
the excel spreadsheet is downloadable here:http://www.hassockshog.co.uk/flipper_calculator.htmhttp://www.hassockshog.co.uk/flipper_calculator.htm

I have used it to optimise the output of a couple of flippers, feather and heavy and its reasonably accurate

Chad, the Burkert valve isnt the problem, its the let trough of the bottle exit.This is easely solved with the buffertank.

Ewan, Chads ram is a 70bore*80stroke ram. For a feather HUGE. He can afford to have a long flipperarm.

lol, yup, very big :)

Hey Chad, did you ever get closer to finishing the hammer-feather? Whereabouts can I see the most recent pics of it?

Skewer

Chad ...I agree with Mario.
The Burkert should be able to flow 46 litres or 12 gallons per sec @ 750 psi with a pressure drop of 5 psi according to the PACulator.

http://www.proautocon.com/PACulator.exehttp://www.proautocon.com/PACulator.exe
Cv of valve 2
Inlet pressure 750 psi
Specific Gravity of CO2= 1.52 ( Thats Density in the programme.)


Note :- Your ram has a capacity of 1/3 litre ....do the math to get a fill time.

You seem to be making the classic mistake of putting a big valve on a small supply.
The internal passageways of your paintball valve are less than 1/16 and if memory serves me right closer to 1/32 and restricted by direction changes.

If you replaced your bath taps with fire hydrants would you be able to fill your bath in seconds?
NO ... it would take much the same time as before.

So use a buffer tank ( a buffer tank contains a readily available and unrestricted head of gas )
I.E. A suitably rated pressure vessel with an outlet bore the same size as your valves inlet bore and enough capacity to suit ... A capacity / volume of 2 or 3 times your rams volume as a rough guide

Woody



(Message edited by woody on January 15, 2006)

wait a second....
70mm x 80mm?
full pressure?

Yes and Yes.... :)

James, yours is bigger. :)

Ok, today I made a manafold so that everything can plug into 1 block. My girlfriend is here so I have not had a chance to test it yet, but it has the 9oz buffer tank + all the area inside the manaflod. Hopefully this will help out. New picture is on the profile.