Go to Post If it weren't for him, I wouldn't be asking why and how, I'd be playing LoL. Now, I do both XD - faust1706 [more]
Home
Go Back   Chief Delphi > ChiefDelphi.com Website > Extra Discussion
CD-Media   CD-Spy  
portal register members calendar search Today's Posts Mark Forums Read FAQ rules

 
Reply
 
Thread Tools Rate Thread Display Modes
  #1   Spotlight this post!  
Unread 11-01-2009, 08:07
thehurd03's Avatar
thehurd03 thehurd03 is offline
Joel H.
FRC #0470 (Alpha Omega)
Team Role: Mechanical
 
Join Date: Mar 2008
Rookie Year: 2008
Location: Ypsilanti MI
Posts: 20
thehurd03 is on a distinguished road
Send a message via AIM to thehurd03
Re: pic: Carmen week1 team 842

Quote:
Originally Posted by GaryVoshol View Post
Oh, oh. Check the bumper rules. You can't attach a legal standard bumper to those angled faces in front.
They don't have to, The rules say you have to cover 75% (I think) of the perimeter of your robot.
Reply With Quote
  #2   Spotlight this post!  
Unread 11-01-2009, 09:10
Jimmy Cao Jimmy Cao is offline
Registered User
AKA: Jimmy Cao
no team
 
Join Date: Sep 2006
Rookie Year: 2004
Location: San Francisco, CA
Posts: 295
Jimmy Cao has a brilliant futureJimmy Cao has a brilliant futureJimmy Cao has a brilliant futureJimmy Cao has a brilliant futureJimmy Cao has a brilliant futureJimmy Cao has a brilliant futureJimmy Cao has a brilliant futureJimmy Cao has a brilliant futureJimmy Cao has a brilliant futureJimmy Cao has a brilliant futureJimmy Cao has a brilliant future
Re: pic: Carmen week1 team 842

Quote:
Originally Posted by thehurd03 View Post
They don't have to, The rules say you have to cover 75% (I think) of the perimeter of your robot.
2/3, but they also must cover all corners.

It looks rather impressive. Excellent progress for week 1! Good job.
__________________
Jimmy Cao

Team 469 2006-2010 Student/Alumni
Team 830 2011-2012 Mentor
Reply With Quote
  #3   Spotlight this post!  
Unread 11-01-2009, 09:14
Bongle's Avatar
Bongle Bongle is offline
Registered User
FRC #2702 (REBotics)
Team Role: Mentor
 
Join Date: Feb 2004
Rookie Year: 2002
Location: Waterloo
Posts: 1,069
Bongle has a reputation beyond reputeBongle has a reputation beyond reputeBongle has a reputation beyond reputeBongle has a reputation beyond reputeBongle has a reputation beyond reputeBongle has a reputation beyond reputeBongle has a reputation beyond reputeBongle has a reputation beyond reputeBongle has a reputation beyond reputeBongle has a reputation beyond reputeBongle has a reputation beyond repute
Send a message via MSN to Bongle
Re: pic: Carmen week1 team 842

Quote:
Originally Posted by thehurd03 View Post
They don't have to, The rules say you have to cover 75% (I think) of the perimeter of your robot.
I would worry about bumper rule I:
Quote:
BUMPERS must protect all exterior corners of the BUMPER PERIMETER
in combination with bumper rule A:
Quote:
BUMPERS must be built in segments, with a minimum length of six inches, and a maximum
length that does not exceed the maximum horizontal dimension of the ROBOT
So if you need to have a bumper on the front (that's the if), it must be 6 inches long and fastened to the hard robot frame, which in the pictured robot's configuration would put it inside the bumper perimeter and thus illegal according to bumper rule L:
Quote:
The BUMPERS must be fixed to the BUMPER PERIMETER

Last edited by Bongle : 11-01-2009 at 09:16.
Reply With Quote
  #4   Spotlight this post!  
Unread 11-01-2009, 12:15
falconmaster's Avatar
falconmaster falconmaster is offline
Registered User
AKA: Ledge
FRC #0842 (Falcon Robotics)
Team Role: Teacher
 
Join Date: Jan 2004
Rookie Year: 2001
Location: Phoenix, Arizona
Posts: 1,406
falconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond repute
Send a message via MSN to falconmaster
Re: pic: Carmen week1 team 842

Quote:
Originally Posted by Bongle View Post
I would worry about bumper rule I:

in combination with bumper rule A:


So if you need to have a bumper on the front (that's the if), it must be 6 inches long and fastened to the hard robot frame, which in the pictured robot's configuration would put it inside the bumper perimeter and thus illegal according to bumper rule L:
Does the bumper perimeter have to be rectangular? We are planning on running the bumper into our bot six inches.

Just for example... what if you had an L shaped robot?
__________________
Faridodin "Fredi" Lajvardi KD7WKD
Reply With Quote
  #5   Spotlight this post!  
Unread 11-01-2009, 13:11
NickE's Avatar
NickE NickE is offline
_
FRC #0254 (The Cheesy Poofs)
Team Role: Engineer
 
Join Date: Mar 2008
Rookie Year: 2008
Location: San Jose, CA
Posts: 620
NickE has a reputation beyond reputeNickE has a reputation beyond reputeNickE has a reputation beyond reputeNickE has a reputation beyond reputeNickE has a reputation beyond reputeNickE has a reputation beyond reputeNickE has a reputation beyond reputeNickE has a reputation beyond reputeNickE has a reputation beyond reputeNickE has a reputation beyond reputeNickE has a reputation beyond repute
Re: pic: Carmen week1 team 842

Where's the cRIO?
Quote:
Originally Posted by falconmaster View Post
Does the bumper perimeter have to be rectangular?
Quote:
Originally Posted by 2009 FRC Manual Section 8.2
BUMPER PERIMETER – the polygon defined by the outer-most set of exterior vertices on the ROBOT (without the BUMPERS or Trailer Hitch attached) that are within the BUMPER ZONE. To determine the BUMPER PERIMETER, wrap a piece of string around the ROBOT at the level of the BUMPER ZONE - the string describes this polygon.
i.e. The bumper perimeter must be a convex polygon.

Last edited by NickE : 11-01-2009 at 13:15.
Reply With Quote
  #6   Spotlight this post!  
Unread 11-01-2009, 13:16
falconmaster's Avatar
falconmaster falconmaster is offline
Registered User
AKA: Ledge
FRC #0842 (Falcon Robotics)
Team Role: Teacher
 
Join Date: Jan 2004
Rookie Year: 2001
Location: Phoenix, Arizona
Posts: 1,406
falconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond repute
Send a message via MSN to falconmaster
Re: pic: Carmen week1 team 842

Quote:
Originally Posted by NickE View Post
Where do the cRio and Spikes go? i.e. The bumper perimeter must be a convex polygon.
That is interesting, where does it say that it must be convex?

That would settle the dispute......

Thanks for helping to vet us. We don't want to caught at a regional with a violation.
__________________
Faridodin "Fredi" Lajvardi KD7WKD
Reply With Quote
  #7   Spotlight this post!  
Unread 11-01-2009, 13:27
NickE's Avatar
NickE NickE is offline
_
FRC #0254 (The Cheesy Poofs)
Team Role: Engineer
 
Join Date: Mar 2008
Rookie Year: 2008
Location: San Jose, CA
Posts: 620
NickE has a reputation beyond reputeNickE has a reputation beyond reputeNickE has a reputation beyond reputeNickE has a reputation beyond reputeNickE has a reputation beyond reputeNickE has a reputation beyond reputeNickE has a reputation beyond reputeNickE has a reputation beyond reputeNickE has a reputation beyond reputeNickE has a reputation beyond reputeNickE has a reputation beyond repute
Re: pic: Carmen week1 team 842

Quote:
Originally Posted by falconmaster View Post
That is interesting, where does it say that it must be convex?
It never explicitly says that it must be convex, but wrapping a string around a concave polygon will result with the string not following the entire perimeter of the polygon. If you wrap a string around this robot in the bumper zone, it will form a convex rectangle.
Reply With Quote
  #8   Spotlight this post!  
Unread 11-01-2009, 13:47
falconmaster's Avatar
falconmaster falconmaster is offline
Registered User
AKA: Ledge
FRC #0842 (Falcon Robotics)
Team Role: Teacher
 
Join Date: Jan 2004
Rookie Year: 2001
Location: Phoenix, Arizona
Posts: 1,406
falconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond repute
Send a message via MSN to falconmaster
Re: pic: Carmen week1 team 842

definition per rules
To determine the BUMPER PERIMETER, wrap a piece of string around the ROBOT at the level of the BUMPER ZONE - the string describes this polygon.

We would have our string cross the opening of our bot. It does not say it has to make contact with the bumper zone everywhere. That is an assumption. Our polygon would be a rectangle, never the less we will cover the angles in from the corner with 6 inches of bumper. We think we are ok......I hope
__________________
Faridodin "Fredi" Lajvardi KD7WKD
Reply With Quote
  #9   Spotlight this post!  
Unread 11-01-2009, 13:49
NickE's Avatar
NickE NickE is offline
_
FRC #0254 (The Cheesy Poofs)
Team Role: Engineer
 
Join Date: Mar 2008
Rookie Year: 2008
Location: San Jose, CA
Posts: 620
NickE has a reputation beyond reputeNickE has a reputation beyond reputeNickE has a reputation beyond reputeNickE has a reputation beyond reputeNickE has a reputation beyond reputeNickE has a reputation beyond reputeNickE has a reputation beyond reputeNickE has a reputation beyond reputeNickE has a reputation beyond reputeNickE has a reputation beyond reputeNickE has a reputation beyond repute
Re: pic: Carmen week1 team 842

Quote:
Originally Posted by falconmaster View Post
We would have our string cross the opening of our bot. It does not say it has to make contact with the bumper zone everywhere. That is an assumption. Our polygon would be a rectangle, never the less we will cover the angles in from the corner with 6 inches of bumper. We think we are ok......I hope
Would the bumpers be straight (parallel with back of bot) or angled (parallel with angled front sides of bot)?
Reply With Quote
  #10   Spotlight this post!  
Unread 11-01-2009, 16:19
falconmaster's Avatar
falconmaster falconmaster is offline
Registered User
AKA: Ledge
FRC #0842 (Falcon Robotics)
Team Role: Teacher
 
Join Date: Jan 2004
Rookie Year: 2001
Location: Phoenix, Arizona
Posts: 1,406
falconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond repute
Send a message via MSN to falconmaster
Re: pic: Carmen week1 team 842

Quote:
Originally Posted by NickE View Post
Would the bumpers be straight (parallel with back of bot) or angled (parallel with angled front sides of bot)?
angled
__________________
Faridodin "Fredi" Lajvardi KD7WKD
Reply With Quote
  #11   Spotlight this post!  
Unread 11-01-2009, 22:50
Mike8519's Avatar
Mike8519 Mike8519 is offline
Registered User
FRC #0303 (TEST Team)
Team Role: Engineer
 
Join Date: Nov 2002
Rookie Year: 2001
Location: Raritan, New Jersey
Posts: 220
Mike8519 is just really niceMike8519 is just really niceMike8519 is just really niceMike8519 is just really niceMike8519 is just really nice
Re: pic: Carmen week1 team 842

Angled "bumpers" would not pass inspection because technically they are not bumpers at all since they do not lie on the bumper perimeter according to the current set of definitions and both sides of the corner must be protected.
Reply With Quote
  #12   Spotlight this post!  
Unread 11-01-2009, 22:57
MrForbes's Avatar
MrForbes MrForbes is offline
Registered User
AKA: Jim
FRC #1726 (N.E.R.D.S.)
Team Role: Mentor
 
Join Date: Feb 2006
Rookie Year: 2006
Location: Sierra Vista AZ
Posts: 6,013
MrForbes has a reputation beyond reputeMrForbes has a reputation beyond reputeMrForbes has a reputation beyond reputeMrForbes has a reputation beyond reputeMrForbes has a reputation beyond reputeMrForbes has a reputation beyond reputeMrForbes has a reputation beyond reputeMrForbes has a reputation beyond reputeMrForbes has a reputation beyond reputeMrForbes has a reputation beyond reputeMrForbes has a reputation beyond repute
Re: pic: Carmen week1 team 842

Ahhh...here's that statement that seemed to me to be missing from the rules.

"2. As indicated in Rule <R08-I>, all exterior corners of the BUMPER PERIMETER must be protected by BUMPERS. Both "sides" of the corner must be protected."

from http://forums.usfirst.org/showthread.php?t=11159
Reply With Quote
  #13   Spotlight this post!  
Unread 11-01-2009, 23:56
falconmaster's Avatar
falconmaster falconmaster is offline
Registered User
AKA: Ledge
FRC #0842 (Falcon Robotics)
Team Role: Teacher
 
Join Date: Jan 2004
Rookie Year: 2001
Location: Phoenix, Arizona
Posts: 1,406
falconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond reputefalconmaster has a reputation beyond repute
Send a message via MSN to falconmaster
Re: pic: Carmen week1 team 842

Quote:
Originally Posted by squirrel View Post
Ahhh...here's that statement that seemed to me to be missing from the rules.

"2. As indicated in Rule <R08-I>, all exterior corners of the BUMPER PERIMETER must be protected by BUMPERS. Both "sides" of the corner must be protected."

from http://forums.usfirst.org/showthread.php?t=11159
Ok Well according to Jim we are possible ok since we will have the bumpers over the corners and the first part to touch a wall will be the bumpers. Let keep or fingers crossed!
__________________
Faridodin "Fredi" Lajvardi KD7WKD
Reply With Quote
  #14   Spotlight this post!  
Unread 11-01-2009, 13:52
AdamHeard's Avatar
AdamHeard AdamHeard is offline
Lead Mentor
FRC #0973 (Greybots)
Team Role: Mentor
 
Join Date: Oct 2004
Rookie Year: 2004
Location: Atascadero
Posts: 5,508
AdamHeard has a reputation beyond reputeAdamHeard has a reputation beyond reputeAdamHeard has a reputation beyond reputeAdamHeard has a reputation beyond reputeAdamHeard has a reputation beyond reputeAdamHeard has a reputation beyond reputeAdamHeard has a reputation beyond reputeAdamHeard has a reputation beyond reputeAdamHeard has a reputation beyond reputeAdamHeard has a reputation beyond reputeAdamHeard has a reputation beyond repute
Send a message via AIM to AdamHeard
Re: pic: Carmen week1 team 842

Quote:
Originally Posted by falconmaster View Post
definition per rules
To determine the BUMPER PERIMETER, wrap a piece of string around the ROBOT at the level of the BUMPER ZONE - the string describes this polygon.

We would have our string cross the opening of our bot. It does not say it has to make contact with the bumper zone everywhere. That is an assumption. Our polygon would be a rectangle, never the less we will cover the angles in from the corner with 6 inches of bumper. We think we are ok......I hope
I believe the intent is that bumpers must be on the bumper perimeter. You're taking a risky move, and should probably Q&A it.
Reply With Quote
  #15   Spotlight this post!  
Unread 11-01-2009, 14:04
GaryVoshol's Avatar
GaryVoshol GaryVoshol is offline
Cogito ergo arbitro
no team
 
Join Date: Aug 2005
Rookie Year: 2000
Location: Royal Oak, MI
Posts: 5,748
GaryVoshol has a reputation beyond reputeGaryVoshol has a reputation beyond reputeGaryVoshol has a reputation beyond reputeGaryVoshol has a reputation beyond reputeGaryVoshol has a reputation beyond reputeGaryVoshol has a reputation beyond reputeGaryVoshol has a reputation beyond reputeGaryVoshol has a reputation beyond reputeGaryVoshol has a reputation beyond reputeGaryVoshol has a reputation beyond reputeGaryVoshol has a reputation beyond repute
Re: pic: Carmen week1 team 842

Quote:
Originally Posted by AdamHeard View Post
I believe the intent is that bumpers must be on the bumper perimeter. You're taking a risky move, and should probably Q&A it.
It's not just the intent, it's the rule:
Quote:
Originally Posted by <R08>
L. The BUMPERS must be fixed to the BUMPER PERIMETER.
What needs to be answered in Q&A is if every side of your robot must have bumpers in order to satisfy the requirement that corners are protected.
__________________
(since 2004)
Reply With Quote
Reply


Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
pic: Robot-Week1 Brad Voracek Extra Discussion 13 16-01-2009 11:44
pic: Team 842 in Hispanic Magazine falconmaster Extra Discussion 5 07-10-2008 19:28
pic: 1889 Team HAZE's frame (week1) Tytus Gerrish Extra Discussion 8 19-01-2007 02:23
pic: installed battery team 842 falconmaster Robot Showcase 11 04-02-2006 09:36
pic: Turret team 842 falconmaster Robot Showcase 3 01-02-2006 17:28


All times are GMT -5. The time now is 02:27.

The Chief Delphi Forums are sponsored by Innovation First International, Inc.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright © Chief Delphi