In Turbine 3 I used a Pressure switch to operate a relay that switched of the compressor...the pressure switches are adaptable from pressures. I set mine to turn the compressor of when it reached 10bar...worked great. Mario now has my pressure switch so he can make further comments as he knows how they work etc.

As Glen said the RRC valve was basically 2 servos that squished pipes to vent and open ports to and from a ram. My first valve was even cheaper than that and worked alot better and only took 1 r/x channel...Carnt remeber the link but somthing like http://www.mutre.co.ukwww.mutre.co.uk *shrug* Small medical valve glued to a servo....They also sell the bottle caps to fit onto coke bottles were u can slide some nylon pipe on...nice little toys witch only cost a few pence. Have fun.

Dave moulds
Team Turbine