Some simple pneumatic questions

[woody]

Andy,
Working on the assumption that you need a flow increase ...Id probably recommend a 2/2 valve with a flow rating suited to your setup on the extend side of the ram ... combined with a small 1/8 port 5/2 and a self relieving regulator + QEV Exhaust on the retract.

Note that the 2/2 Burkert valve hasnt an exceptional flow rating.

Some data on your setup ... bore , stroke ,flipper tip lift and working pressure would help with a recommendation.

Woody

[Mouldy]

In the original turbulence when it was first built we put a burket on the fire.. it was pants.. wouldnt even selfwright.

We changed to a variation of woodys Q.E.V firing idea and it turned it from a rubbish lifter to quite a competitive flipper.

[glen]

out of curiosity whats involved in converting a hydraulic ram to operate as a full pressure pnuematic ram?

any internal mods or just enlarging the ports in the ram itself?

cheers

[woody]

Not a total answer to your questions but worth a read.

http://www.fightingrobots.co.uk/discus/messages/9/845.htmlhttp://www.fightingrobots.co.uk/disc...ges/9/845.html

[glen]

Cheers woody,

ive stripped the ram down and found its 5mm wall thickness steel and the piston itself is actually using a metal seal on it like a piston ring.

its next to impossible to move the piston by hand. is it okay to replace the metal ring with an o ring seal to lower the resistance?

thanks again.

[woody]

Replacing the piston seal with an O ring should be fine....Id go for a very light fit.