Chief Delphi - Ball Bounces Lands on Top of the Truss

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Chief Delphi (http://www.chiefdelphi.com/forums/index.php)

- General Forum (http://www.chiefdelphi.com/forums/forumdisplay.php?f=16)

- - Ball Bounces Lands on Top of the Truss (http://www.chiefdelphi.com/forums/showthread.php?t=128183)

petercooperjr

25-03-2014 06:44

Re: Ball Bounces Lands on Top of the Truss

Quote:

Originally Posted by BitTwiddler (Post 1364339)

Oh the ball landed on the scoring side of the truss so the alliance got the ten points. If the alliance had their wits about them they should have placed a robot or two underneath it ready to catch it when it got shaken loose.

The rule explicitly says that if the head ref shakes the truss, it won't count as scoring the truss points.

Quote:

If a BALL becomes stuck on the TRUSS, the Head Referee will shake the TRUSS to free the BALL. In this situation, the ALLIANCE will not earn TRUSS points.

I don't recall seeing any questions about it on the Referee test, though… :)

BradCrn

25-03-2014 09:44

Re: Ball Bounces Lands on Top of the Truss

As far as i remember there were two or three of these incidents at the Escanaba competition, it was pretty entertaining to see and not too big of a problem for the ref to shake down.

brandon.cottrell

25-03-2014 10:10

Re: Ball Bounces Lands on Top of the Truss

Quote:

Originally Posted by petercooperjr (Post 1364432)

The rule explicitly says that if the head ref shakes the truss, it won't count as scoring the truss points.

I don't recall seeing any questions about it on the Referee test, though… :)

That seems really lame to me because they probably didn't put much thought in a rule (which is okay in hindsight because this will probably happen at the most like 1 time at a regional). I don't see why the alliance shouldn't get truss points, they had to get the ball up there somehow.

Dival

25-03-2014 10:14

Re: Ball Bounces Lands on Top of the Truss

Quote:

Originally Posted by BBray_T1296 (Post 1364239)

Yeah, except...

Is it so hard to give that panel a 5 deg angle?

BigJ	25-03-2014 10:15

Re: Ball Bounces Lands on Top of the Truss

Quote:

Originally Posted by Brandon1266 (Post 1364491)

You earn a truss score for getting you ball to pass through the plane. If you only got it up enough to get stuck and halfway through the plane, you didn't quite complete the task :)

Quote:

Originally Posted by 3.1.4

A BALL is considered SCORED over the TRUSS if a ROBOT causes a BALL to pass though the infinitely tall plane that is bounded by the top of the TRUSS and the TRUSS POLES toward the ALLIANCE’S GOALS (e.g. a red BALL towards the red GOALS).

Plus, the ROBOT is not causing it to finish moving through the plane.

Sunshine

25-03-2014 10:17

Re: Ball Bounces Lands on Top of the Truss

Can you say end game?

bkahl

25-03-2014 10:17

Re: Ball Bounces Lands on Top of the Truss

Quote:

Originally Posted by Brandon1266 (Post 1364491)

I don't see why the alliance shouldn't get truss points, they had to get the ball up there somehow.

In our situation, the ball did not get up there in an attempt to score over the truss, it got up there after a rebound off of the goal. Also, you cannot know for sure which side it will fall off of the truss. If it falls the right way once and that alliance receives truss points, then later another alliance does not receive points because it falls backwards, it is not fair to the alliance where it falls backwards. I would much rather have the ball back on the field in a timely fashion than worry about getting the truss points.

MarcD79

25-03-2014 22:43

Re: Ball Bounces Lands on Top of the Truss

Quote:

Originally Posted by Dival (Post 1364493)

Is it so hard to give that panel a 5 deg angle?

These are rented trusses. They are standard fabricated trusses that are used for audio/visual equipment. FIRST does not own them, nor do they build them.

BitTwiddler

25-03-2014 23:11

Re: Ball Bounces Lands on Top of the Truss

Quote:

Originally Posted by petercooperjr (Post 1364432)

The rule explicitly says that if the head ref shakes the truss, it won't count as scoring the truss points.

I don't recall seeing any questions about it on the Referee test, though… :)

Whups, you're correct. Shame on me.

Gregor

25-03-2014 23:13

Re: Ball Bounces Lands on Top of the Truss

Quote:

Originally Posted by MarcD79 (Post 1364884)

These are rented trusses. They are standard fabricated trusses that are used for audio/visual equipment. FIRST does not own them, nor do they build them.

Rotate them 45 degrees then.

Botwoon

25-03-2014 23:19

Re: Ball Bounces Lands on Top of the Truss

Quote:

Originally Posted by Gregor (Post 1364904)

Rotate them 45 degrees then.

The field would be out of spec.

Gregor

25-03-2014 23:25

Re: Ball Bounces Lands on Top of the Truss

Quote:

Originally Posted by Botwoon (Post 1364910)

The field would be out of spec.

Rotate the spec 45 degrees...

Christopher149

25-03-2014 23:27

Re: Ball Bounces Lands on Top of the Truss

Then bots might hit the truss, or balls might not make it over.

edge cases, I know, but that kind of change would make an angry riot

nixiebunny

26-03-2014 12:10

Re: Ball Bounces Lands on Top of the Truss

I witnessed the Arizona regional occurrence of this. It was rather amusing. They shook the heck out of it.

An elegant solution would be to place a single pipe lengthwise along the center of the top of the truss. It could be zip-tied in place, as it would not be subjected to much force. The trouble is that this would change the height of the truss, so it's not feasible to do at this late date.

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