Quote:
Originally Posted by Rosiebotboss
Last year, I saw 1 team use a switch that bypassed the Nason Switch to pre charge on the field before a match (and then took the switch out of its socket and the mentor put it in his pocket) and another team use a Leatherman multi tool to jump the 2 wires to pre charge.
This allows teams to over charge (over 120 psi) the system at start up, all the way up to whatever the pressure relief valve was set.
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I've also heard this as advertised as a "trick" to get that extra 5-7 psi between the point the switch cuts off (typically 115 or less) to 120. While lawyering of rules in the past may have allowed teams to convince themselves it was legal, I believe it is specifically not this year, based on a combination of:
R63 To satisfy multiple constraints associated with safety, consistency, Inspection, and constructive innovation, no pneumatic parts
other than those explicitly permitted in Section 4.10: Pneumatic System may be used on the ROBOT
(A jumper is not an explicitly permitted pneumatic part)
R65 All pneumatic COMPONENTS must be used in their original, unaltered condition.
(Jumpering the switch is not using it in its original condition)
R77 The pressure switch requirements are:
...
C. The two wires from the pressure switch must be connected directly the pressure switch input of the PCM controlling the compressor or, if controlled using the roboRIO and a Spike relay, to the roboRIO.
D. If connected to the roboRIO, the roboRIO must be programmed to sense the state of the switch and operate the relay module that powers the compressor to prevent over-pressuring the system.
(Jumpering across the switch is not directly connecting it to the PCM or roboRIO)