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-   -   GDC at it again! (http://www.chiefdelphi.com/forums/showthread.php?t=81788)

IndySam 03-02-2010 00:20

GDC at it again!
 
Regarding Spike Relay Module

Are the Spike Relay Modules allowed to control the window motors?
Besides the air compressor what other motors may the Spike control?
Is there a maximum number of Spikes allowed on the robot?

TNX


GDC

Re: Regarding Spike Relay Module
1 - Yes.
2 - Under Rule <R55>, any motor other than the CIM motor and Fisher-Price motor may be controlled by either a relay module or a speed controller.
3 - While there is no rule that explicitly addresses this, by our calculations the maximum number of Spikes that can be contained within the NORMAL CONFIGURATION volume/weight constraints is 883. However, it is noted that the budget limitations of Rule <R22> would limit you to no more than 102 Spikes on a single ROBOT.

sportzkrazzy 03-02-2010 00:37

Re: GDC at it again!
 
:ahh: O no only 102!!!!! but our design calls for 103....

MrForbes 03-02-2010 00:41

Re: GDC at it again!
 
Notice they did not mention anything about all those Spikes being connected to anything....

Eugene Fang 03-02-2010 00:43

Re: GDC at it again!
 
Quote:

Originally Posted by squirrel (Post 912330)
Notice they did not mention anything about all those Spikes being connected to anything....

We plan to use about 40 of them for ballast.

sportzkrazzy 03-02-2010 00:44

Re: GDC at it again!
 
yeah we where going to use them to make weight... at .12 lbs they are really heavy for the price and we need all the weight we can get. Now where did that sarcasm emote go.....

Nick Lawrence 03-02-2010 00:46

Re: GDC at it again!
 
I was planning on building a wedge with ~35 spikes for more loft on the ball.

-Nick

Eugene Fang 03-02-2010 00:49

Re: GDC at it again!
 
Quote:

Originally Posted by Nick Lawrence (Post 912336)
I was planning on building a wedge with ~35 spikes for more loft on the ball.

-Nick

Don't pop the ball with all those spikes! :ahh:

Phoenix Spud 03-02-2010 02:10

Re: GDC at it again!
 
Now what about those Vics? And Jags?

fsgond 03-02-2010 09:42

Re: GDC at it again!
 
All motors must be run through victors or jags, minus a very few exceptions.

Daniel_LaFleur 03-02-2010 09:52

Re: GDC at it again!
 
Quote:

Originally Posted by fsgond (Post 912456)
All motors must be run through victors or jags, minus a very few exceptions.

Not quite correct.

All CIM and FP motors must run on victors or Jags. All other FRC legal motors may be run on spikes.

Matt C 03-02-2010 13:04

Re: GDC at it again!
 
Quote:

Originally Posted by sportzkrazzy (Post 912335)
Now where did that sarcasm emote go.....

What you need is the SarcMark!

BrendanB 03-02-2010 13:06

Re: GDC at it again!
 
Wow, part of me wonders how much time they have on their hands these days!?

JesseK 03-02-2010 13:53

Re: GDC at it again!
 
Quote:

Originally Posted by BrendanB (Post 912583)
Wow, part of me wonders how much time they have on their hands these days!?

A quick 120 second calculation is all you need to come up with those numbers. The GDC also hasn't taken into account what constitutes a ROBOT. Their numbers are based upon figures that exclude any scheme to put the spikes together. Thus this supposed spike-only robot has no left over money/weight cost for glue, or even a cardboard box. Since that would take too long to get set up on the field (stacking 2 spikes is a pain, let alone 102...), I conjecture a KOP frame + spike-only robot could not pass inspection.

Thus we need to take 1 spike away and use the extra $ for fishing line to tie them all together on a KOP frame. 101 spikes ... time to take stock in IFI!

Vikesrock 03-02-2010 13:57

Re: GDC at it again!
 
Quote:

Originally Posted by JesseK (Post 912608)
Their numbers are based upon figures that exclude any scheme to put the spikes together. Thus this supposed spike-only robot has no left over money/weight cost for glue, or even a cardboard box.

The fastener/adhesive exemption <R23-C> could be used here to find a way to cobble them all together.

BrendanB 03-02-2010 14:09

Re: GDC at it again!
 
Quote:

Originally Posted by JesseK (Post 912608)
A quick 120 second calculation is all you need to come up with those numbers. The GDC also hasn't taken into account what constitutes a ROBOT. Their numbers are based upon figures that exclude any scheme to put the spikes together. Thus this supposed spike-only robot has no left over money/weight cost for glue, or even a cardboard box. Since that would take too long to get set up on the field (stacking 2 spikes is a pain, let alone 102...), I conjecture a KOP frame + spike-only robot could not pass inspection.

Thus we need to take 1 spike away and use the extra $ for fishing line to tie them all together on a KOP frame. 101 spikes ... time to take stock in IFI!

Its more the fact of when asked how many spikes are allowed on the robot, they don't come up with a number for all of the motors and pnuematics, they use the weight of the spikes to determine enough needed to fill 120lbs. :)

GDC member: "Hey guys since it is February and half way through build season, can we start adding some humor in our answers?"
Everyone else: "OH YES!"
;)

Taylor 08-02-2010 07:44

Re: GDC at it again!
 
Here's another (emphasis mine):

2 - While we understand that "hard" is a relative term, we do not define a specific hardness rating (understand that many teams and inspection stations do not have the tools required to measure specific hardness). Hardness is used in the general sense of the word as understood by a reasonably astute observer. A rule of thumb: If I hit you with it and it hurts, then it is "hard."

Peter Matteson 08-02-2010 09:56

Re: GDC at it again!
 
Quote:

Originally Posted by Taylor (Post 915615)
Here's another (emphasis mine):

2 - While we understand that "hard" is a relative term, we do not define a specific hardness rating (understand that many teams and inspection stations do not have the tools required to measure specific hardness). Hardness is used in the general sense of the word as understood by a reasonably astute observer. A rule of thumb: If I hit you with it and it hurts, then it is "hard."

Well I guess we don't need to borrow that rockwell hardness tester for the CT regional now. This will make inspections way easier.:rolleyes:

Joe Ross 08-02-2010 10:10

Re: GDC at it again!
 
Quote:

Originally Posted by Taylor (Post 915615)
A rule of thumb: If I hit you with it and it hurts, then it is "hard."

I guess nobody on the GDC has ever been whacked with a pool noodle.

Daniel_LaFleur 08-02-2010 10:12

Re: GDC at it again!
 
Quote:

Originally Posted by Joe Ross (Post 915659)
I guess nobody on the GDC has ever been whacked with a pool noodle.

Or a piece of surgical tubing :ahh:

MrForbes 08-02-2010 10:16

Re: GDC at it again!
 
I'd take a licking with a pool noodle or surgical tubing over one with PVC pipe or aluminum bar stock, any day!

Daniel_LaFleur 08-02-2010 10:32

Re: GDC at it again!
 
Quote:

Originally Posted by squirrel (Post 915661)
I'd take a licking with a pool noodle or surgical tubing over one with PVC pipe or aluminum bar stock, any day!

Apparently you've never been flailed with surgical tubing. It can take skin off down to the bone (don't ask :ahh: )

Rion Atkinson 08-02-2010 10:32

Re: GDC at it again!
 
Quote:

Originally Posted by squirrel (Post 915661)
I'd take a licking with a pool noodle or surgical tubing over one with PVC pipe or aluminum bar stock, any day!

Actually. I chose the PVC pipe or aluminum bar stock. There is less grip on those, thus easier to rip out of the other persons had. The are also heavier and slower, so it is a longer swig. All make running away or counter attacking easier. :D

My $0.02
-Rion

Cheerleader1073 09-02-2010 09:55

Re: GDC at it again!
 
... it's discussions like these why I just love FIRST :)

Kims Robot 09-02-2010 10:51

Re: GDC at it again!
 
I saw the title of this thread and expected it to be people complaining about the GDC saying "RTFM!!" (where F of course stands for FIRST)...

But instead I was happy to see it was about the GDC actually having a sense of humor... whew!! :)

Although to be semi-technical, I think that the 883 number would go against the definition of ROBOT which includes:
Quote:

The ROBOT implementation must obviously follow a design approach intended to play the 2010 FRC game (e.g. a box of unassembled parts placed on the FIELD, or a ROBOT designed to play a different game, would not satisfy this definition).
The 102 number has a much more likely chance to comply with the definition of ROBOT :-D

kevin.li.rit 09-02-2010 11:02

Re: GDC at it again!
 
Quote:

Originally Posted by BrendanB (Post 912619)
Its more the fact of when asked how many spikes are allowed on the robot, they don't come up with a number for all of the motors and pnuematics, they use the weight of the spikes to determine enough needed to fill 120lbs. :)

GDC member: "Hey guys since it is February and half way through build season, can we start adding some humor in our answers?"
Everyone else: "OH YES!"
;)

I think they use the cost of the spike since it would take 1000 to fill 120lbs (using it's listed weight).

dlavery 10-02-2010 17:35

Re: GDC at it again!
 
Quote:

Originally Posted by Joe Ross (Post 915659)
I guess nobody on the GDC has ever been whacked with a pool noodle.

You have no idea of the number of things we get whacked with while designing the games...

http://www.youtube.com/watch?v=xCwLirQS2-o

-dave




.

Foster 10-02-2010 17:52

Re: GDC at it again!
 
Quote:

Originally Posted by dlavery (Post 917359)
You have no idea of the number of things we get whacked with while designing the games...

So I'm starting to rethink that the GDC is the coolest job in the world....

Taylor 10-02-2010 21:08

Re: GDC at it again!
 
Was that a herring?

dlavery 11-02-2010 01:14

Re: GDC at it again!
 
Quote:

Originally Posted by Taylor (Post 917541)
Was that a herring?

No, it was a shrubbery.




.

sportzkrazzy 11-02-2010 01:26

Re: GDC at it again!
 
From roger?

EricH 11-02-2010 02:38

Re: GDC at it again!
 
Quote:

Originally Posted by dlavery (Post 917769)
No, it was a shrubbery.




.

Now the shrubbery is a herring--and we have to cut down the tallest tree in the forest with --Oh, sorry, can't say that word, or the Knights Who Say 'Ni' will become totally helpless.

IndySam 11-02-2010 08:38

Re: GDC at it again!
 
Quote:

Originally Posted by dlavery (Post 917769)
No, it was a shrubbery.




.

don't say that word!

Taylor 15-02-2010 14:47

Re: GDC at it again!
 
Fasteners, adhesives, and lubricants do not have to be listed on the BOM. However, you may still want to have your mentors count them all for your own purposes. It gives them something to do.

Apparently mentors don't have enough to do.

I think the GDC should try mentoring a team sometime. It may open their eyes.


**ducks**

Ian Curtis 15-02-2010 15:04

Re: GDC at it again!
 
Quote:

Originally Posted by Taylor (Post 920545)
Fasteners, adhesives, and lubricants do not have to be listed on the BOM. However, you may still want to have your mentors count them all for your own purposes. It gives them something to do.

Apparently mentors don't have enough to do.

I think the GDC should try mentoring a team sometime. It may open their eyes.


**ducks**

I imagine that is in response to "We have plenty of spare mentors for counting screws and rivets, but we'd like to get them started early if that's necessary." which is in the original post. :p

Taylor 15-02-2010 16:00

Re: GDC at it again!
 
Quote:

Originally Posted by iCurtis (Post 920550)
I imagine that is in response to "We have plenty of spare mentors for counting screws and rivets, but we'd like to get them started early if that's necessary." which is in the original post. :p

Well, yeah, if you read.

Peter Matteson 18-02-2010 14:06

Re: GDC at it again!
 
Another classic GDC response to a comically asked question:
http://forums.usfirst.org/showthread.php?t=14687

GaryVoshol 21-02-2010 19:02

Re: GDC at it again!
 
Another good answer: http://forums.usfirst.org/showthread.php?t=14758

Daniel_LaFleur 21-02-2010 19:10

Re: GDC at it again!
 
Quote:

Originally Posted by GaryVoshol (Post 925539)

Now that was funny.

You can tell it's getting to the end of build season.

PAR_WIG1350 21-02-2010 20:15

Re: GDC at it again!
 
Quote:

Originally Posted by Daniel_LaFleur (Post 925549)
Now that was funny.

You can tell it's getting to the end of build season.

HA HA HA HA awwww...
now I'm sad

Oh well, ~ 2 days left
Good luck!

EricH 21-02-2010 22:20

Re: GDC at it again!
 
Epic!

I wonder which GDC member wrote that one. Might be something Lavery would do...

DonRotolo 21-02-2010 22:51

Re: GDC at it again!
 
You know, that one really WAS funny. :D

nitneylion452 21-02-2010 23:09

Re: GDC at it again!
 
Quote:

Originally Posted by EricH (Post 917782)
Now the shrubbery is a herring--and we have to cut down the tallest tree in the forest with --Oh, sorry, can't say that word, or the Knights Who Say 'Ni' will become totally helpless.

We are no longer the Knights Who Say "Ni." We are now the Knights Who Say "*insertwhatevertheysayhere*."

Oh Knights Who...until recently said "ni"...

EricH 21-02-2010 23:12

Re: GDC at it again!
 
Quote:

Originally Posted by nitneylion452 (Post 925801)
We are no longer the Knights Who Say "Ni." We are now the Knights Who Say "*insertwhatevertheysayhere*."

Oh Knights Who...until recently said "ni"...

Doesn't matter, they're still helpless because I said *that word which the Knights Who At One Point Said Ni cannot hear*.

nitneylion452 21-02-2010 23:21

Re: GDC at it again!
 
Quote:

Originally Posted by EricH (Post 925807)
Doesn't matter, they're still helpless because I said *that word which the Knights Who At One Point Said Ni cannot hear*.

But how can we not say it if we don't know what it is?

Jon Stratis 23-02-2010 13:37

Re: GDC at it again!
 
And the GDC is at it again... http://forums.usfirst.org/showthread.php?t=14758

Quote:

Given that plywood is a non-homogeneous, non-isotropic material with the strength and bending moment determined, in large part, by the relative orientation of the surviving laminations, it is not at all clear that cutting a dado across the entire height of the material would not severely compromise the structural integrity of the material. The dado reduces the effective thickness of the material by 16.67%. To ensure that the integrity of the modified plywood backing is still sufficient to survive the expected impacts of a typical match, you will need to provide appropriate analytical results to allow us to perform a comprehensive stress-loads analysis prior to having your robot inspected at the competition. As a minimum, we will need the following materials to be submitted for review: a clear definition of the resulting neutral axis along the entire length of the modified plywood material, a Finite Element Analysis (using a NASTRAN-compliant tool or equivalent) of deformation of the plywood backing within 12 inches of the dado cut during a 40-G impact by a 150-pound robot, both analytically- and experimentally-produced predictions of the yield strength of the modified plywood, and a full analysis (using Timoshenko beam theory or equivalent) of the resulting beam stiffness at the moment of impact as compared to the theoretical yield strength. ---- Nah, just kidding. Your solution sounds fine. No problem.
By far my favorite answer of the build season.

Al Skierkiewicz 23-02-2010 15:07

Re: GDC at it again!
 
It makes you wonder how many years they have been waiting for just the right question to be asked so that they could release this answer, doesn't it?

DonRotolo 23-02-2010 22:34

Re: GDC at it again!
 
I can imagine the build season is stressful on the GDC, too.

Now, wouldn't everyone who uses a cRio be a knight who says "NI" ??

JesseK 24-02-2010 10:18

Re: GDC at it again!
 
Quote:

Originally Posted by Don Rotolo (Post 927608)
Now, wouldn't everyone who uses a cRio be a knight who says "NI" ??

Only if your last name is Knight.

JaneYoung 24-02-2010 10:24

Re: GDC at it again!
 
Quote:

Originally Posted by Al Skierkiewicz (Post 927227)
It makes you wonder how many years they have been waiting for just the right question to be asked so that they could release this answer, doesn't it?

Like sitting ducks, we are.

:)


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