[ngreen]

Thanks. I agree with this post completely but my only problem is I had planned to use this system with a 2" cyclinder to possibly hang. The plan was to use the retracted force, 170 pounds and the 60psi. This will cause the systems pressure to drop by 12psi and will put the force on the border of 130lbs, enough to lift the robot. Reducing this pressure to much would probably limit this ability and I would have to change to extended force to have enough power. I had reasons why I want use this system but I imagine if FIRST rules against this I can re-engineer a workable plan. Thanks for your insight into this. I had honestly never put any thought into this. I knew the compression stops the pistons (equalizing of forces not pressures) but I had not thought that it would be compression past 60 psi and possibly be ineligible. I'll try to post if I hear anything from FIRST. Thanks.