How do you make your compressorless system work, when all valves "bleed" air slowly?

[kmcclary]

Originally Posted by Joe Ross

What rate do you lose air at? This year, we're losing 1-2 psi per minute when fully topped off. Is your rate similar?

Maybe that or a bit higher with the SMC dual coil, significantly higher (up to twice that) with the single coil valves.

The grey Festo was definitely the worst case (Rexroth a close second), and the grey Festo WAS the one we wanted to use.

Things work great the second we pull of the compressor. But if the round start takes more than a few minutes from compressor disconnect, we're starting to get marginal on air. That delay happens often enough at regionals that it concerns me. That's why I'm seeking either non-leaking valves, or some kind of a "digital cork" stop-gap solution. I'm not comfortable with any "quick, let's start or we're toast" design.

(At least it's good to know that we're not the only ones that see this problem.)

- Keith McClary
Chief Engineer, Team 1502 "Technical Difficulties"