Power Bumpers

[Nate Laverdure]

Originally Posted by Mike Betts

Most robot inspectors will disallow a pneumatic system which does not have a relief valve (et cetera).

Not true in all cases-- closed-loop pneumatic shocks are expressly allowed. See <R71> part I:

<R71>
In addition to the items included in the Kit Of Parts, pneumatic system items specifically permitted on 2009 FRC ROBOTS include the following items. All included items must be “off the shelf” pneumatic devices rated by their manufacturers for pressure of at least 125psi, and used in their original, unaltered condition (except as required for assembly with other components).
...
I. For the purposes of the FIRST competition, closed-loop pneumatic (gas) shocks are not considered pneumatic devices, and are permitted additions to the ROBOT.

[Mike Betts]

Originally Posted by Nate Laverdure

Not true in all cases-- closed-loop pneumatic shocks are expressly allowed. See <R71> part I:

Nate,

Yes they are and they are designed for that purpose. However, I have seen teams show up with charged, dead-ended Bimba Cylinders and try to argue that they are not part of the pneumatic system.

Regards,

Mike

[Tottanka]

i got an answer from GDC about that, and it seems OK as long as you are moving the bumper along with it's chassis part, and are in the dimensions and safety rules.