That is my plan for this weeks meetings. I really rather not have to bring legal counsel to the events. Lol

Re: Al's 2016 Inspection Thread
 

The best way to not seem rude is to ask the inspector which rule they are enforcing when they request something. Then look up the rule and see if they are correct or if it is a difference of interpretation. With the rule book in hand, feel free to discuss the inspector's ruling.

Most differences can be worked out with the rules in hand.

Re: Al's 2016 Inspection Thread
 

When in the pit & I don't want to dump the air out of the accumulators, but i don't want an actuator moving. Or if I want to release pressure on a cylinder. I will grant that the normal case is to have some working pressure, but you asked for a reason. Some teams have a lot of stored pressure. In that case it is fairly important to have the dump on the high side. In other cases maybe not so much.

I was not your RI. I do not walk away from questions & am always willing to review the rules and the reasons for my interpretation. I try to read the rules not as I what I would like, but what I think the GDC intends. Which is generally pretty literal. I will also suggest that they ask the LRI if they don't like my answer.

Re: Al's 2016 Inspection Thread
 

So be sure to label it a rear door motor?

Re: Al's 2016 Inspection Thread
 

As an inspector I love it when the students show me I'm wrong. It's a great learning experience for both of us.

Re: Al's 2016 Inspection Thread
 

If you change the setting of the Pressure Regulator, wouldn't that be a reason to be re-inspected to make sure the robot is in compliance with the pneumatic rules?

So is it safe to say based off of the responses that it is in fact legal to have the dump valve either on the high or low side?

Re: Al's 2016 Inspection Thread
 

Depends on where the regulator is in the system.
For instance, we've had robots that adjust the pressure on the fly.
What made them safe is the adjusted regulator was a secondary regulator downstream from the 60psi max regulator, so it couldn't have pressure greater than 60psi under any circumstances.

Re: Al's 2016 Inspection Thread
 

No. That is an adjustment not a modification. If you replaced the regulator with a different model regulator then that would be an modification that would require re-inspection. When checking robots in the queuing line, one of things inspectors look at is the air pressure.

Re: Al's 2016 Inspection Thread
 

This is why it's important to have quality bumpers.

https://goo.gl/photos/kiyM4gCH4qp42hXKA

Shall I take it no one wants to make an actual ruling on this?

Re: Al's 2016 Inspection Thread
 

I would rule it has to be on the high pressure side based on R78.

R78 If pneumatic COMPONENTS are used, the following items are required as part of the pneumatic
circuit and must be used in accordance with this section, as illustrated in Figure 4-15.

Figure 4-15 shows the dump valve on the high pressure side of the system.

Re: Al's 2016 Inspection Thread
 

Keep in mind although I inspect, I am not the GDC, Al, or even a LRI so mine is just an opinion. Q & A would give the official answer. I read to rules to mean on the high pressure side assuming the regulator is not off board (no storage pressure on the robot) for reasons previously stated. I see the other side of the argument & would cheerfully refer it to the LRI if it was an issue for the team. I also think it is a minor thing with little impact on safety and no competitive advantage.

Re: Al's 2016 Inspection Thread
 

IMHO, as long as the Dump Value empties the entire system within a few seconds, it would be ok on either the high or low pressure side.

Thanks for all the input on this.