View Single Post
  #6   Spotlight this post!  
Unread 16-02-2007, 20:39
kmcclary's Avatar
kmcclary kmcclary is offline
Founder 830/1015;Mentor 66/470/1502
FRC #0470 (Alpha Omega Robotics)
Team Role: Engineer
 
Join Date: Aug 2001
Rookie Year: 1994
Location: Ann Arbor, MI
Posts: 491
kmcclary has a reputation beyond reputekmcclary has a reputation beyond reputekmcclary has a reputation beyond reputekmcclary has a reputation beyond reputekmcclary has a reputation beyond reputekmcclary has a reputation beyond reputekmcclary has a reputation beyond reputekmcclary has a reputation beyond reputekmcclary has a reputation beyond reputekmcclary has a reputation beyond reputekmcclary has a reputation beyond repute
Re: How do you make your compressorless system work, when all valves "bleed" air slow

Quote:
Originally Posted by Joe Ross View Post
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"
__________________
Keith McClary - Organizer/Mentor/Sponsor - Ann Arbor MI area FIRST teams
ACTI - Automation Computer Technologies, Inc. (Sponsoring FIRST teams since 2001!)
MI Robot Club (Trainer) / GO-Tech Maker's Club / RepRap-Michigan) / SEMI CNC Club
"Certifiably Insane": Started FIVE FRC teams & many robot clubs (so far)!
2002: 830 "Rat Pack" | 2003-5;14: 1015;1076 "Pi Hi Samurai" | 2005-6: 1549 "Washtenuts"/"Fire Traxx"
2005-(on): 1502 "Technical Difficulties" | 2006-(on): FIRST Volunteer!
2009-(on): 470 "Alpha Omega" | WAFL | Sponsor & "Floating Engineer" for MI Dist 13 (Washtenaw Cnty)
2011: 3638 "Tigertrons" | 2013-(on): 4395 "ViBots" | 2014-(on) 66 "Grizzlies"
"Home" Teams: 66, 470, 1076, 1502, 4395
Local FIRST alumni at or coming to Ann Arbor (UM/EMU/WCC/Cleary)?
...We Want YOU as a Mentor! Please email me for info!
Support CDF Reputation - If a posting helped, thank 'em with rep points!
"It must be FRC build season when your spouse and children become 'Action Items 8 & 9'..."