Go to Post The Championship, The Championship Event, The World Championship, The international Championship, Internationals, Champs, Nationals, Nat's, ATL... I just call it the best time of my life. - Kyle [more]
Home
Go Back   Chief Delphi > Technical > Technical Discussion
CD-Media   CD-Spy  
portal register members calendar search Today's Posts Mark Forums Read FAQ rules

 
Closed Thread
Thread Tools Rate Thread Display Modes
  #1   Spotlight this post!  
Unread 16-01-2013, 09:46
Paul T.'s Avatar
Paul T. Paul T. is offline
Registered User
no team (Team WARP)
Team Role: Mentor
 
Join Date: Jan 2012
Rookie Year: 2012
Location: United States
Posts: 63
Paul T. is on a distinguished road
Shooter Leaving marks on Disks

After kickoff our team went down to our local harbor frieght and bought This and spinning direct off a CIM it shoots pretty well but it leaves a red ring of rubber on the frizbees. we were wondering if this is happening to anyone else and if the andymark penumatic wheels leave any marks.

Thanks,
Paul Troy
__________________
ROOKIE Team 5400 WARP Mentor
Former FRC 1687 Highlander Robotics
Metal of Honor - Battle Cry 13 @ WPI
WPI districts Semifinalists-2014
  #2   Spotlight this post!  
Unread 16-01-2013, 10:24
mehrkam's Avatar
mehrkam mehrkam is offline
Paul Mehrkam
FRC #0836 (Robobees 836)
Team Role: Mentor
 
Join Date: Oct 2010
Rookie Year: 2007
Location: Leonardtown, MD
Posts: 17
mehrkam is on a distinguished road
Re: Shooter Leaving marks on Disks

The 2013 KOP wheel leaves a white mark on the Frisbees.
  #3   Spotlight this post!  
Unread 16-01-2013, 12:01
Keyreaper's Avatar
Keyreaper Keyreaper is offline
Keyreaper
AKA: Cyrus Duong
FRC #1710 (Revolution Ravonics)
Team Role: Programmer
 
Join Date: May 2011
Rookie Year: 2011
Location: Olathe
Posts: 140
Keyreaper is an unknown quantity at this point
Re: Shooter Leaving marks on Disks

Our team was testing a variety of wheels in our prototype shooter, almost all of them left marks on the frisbee.
__________________

CTO/Head Programmer of Team 1710

  #4   Spotlight this post!  
Unread 16-01-2013, 12:14
scaryone's Avatar
scaryone scaryone is offline
Registered User
FRC #0058 (The Riot Crew)
Team Role: Coach
 
Join Date: Jan 2011
Rookie Year: 2007
Location: South Portland Maine
Posts: 136
scaryone will become famous soon enough
Re: Shooter Leaving marks on Disks

All of our test wheels leave marks. Black Pneumatic tires were the worst and were taking pieces of plastic off the Bees. Chose to forgo the Pneumatic because of the damage to the field element.
  #5   Spotlight this post!  
Unread 16-01-2013, 13:30
Keyreaper's Avatar
Keyreaper Keyreaper is offline
Keyreaper
AKA: Cyrus Duong
FRC #1710 (Revolution Ravonics)
Team Role: Programmer
 
Join Date: May 2011
Rookie Year: 2011
Location: Olathe
Posts: 140
Keyreaper is an unknown quantity at this point
Re: Shooter Leaving marks on Disks

Consdering what the majority of the shooter designs are going to be like. I'm sure the rules regarding field element damage is going to me very minimal in punishment if any at all. I'm sure they expected that the frisbees would at least get "scuffed" up while in play.
__________________

CTO/Head Programmer of Team 1710

  #6   Spotlight this post!  
Unread 16-01-2013, 13:48
davidjgz's Avatar
davidjgz davidjgz is offline
Registered User
FRC #3196 (Team Spork)
Team Role: Leadership
 
Join Date: Jan 2010
Rookie Year: 2010
Location: North carolina
Posts: 13
davidjgz is on a distinguished road
Re: Shooter Leaving marks on Disks

We built a linear two wheel shooter with the AndyMark pneumatic wheels and it leaves a scuff but doesn't really damage the frisbee.
__________________
2012 Dean's List Winner

teamspork.com
  #7   Spotlight this post!  
Unread 16-01-2013, 14:14
Paul T.'s Avatar
Paul T. Paul T. is offline
Registered User
no team (Team WARP)
Team Role: Mentor
 
Join Date: Jan 2012
Rookie Year: 2012
Location: United States
Posts: 63
Paul T. is on a distinguished road
Re: Shooter Leaving marks on Disks

has anyone found a way to avoid this?
__________________
ROOKIE Team 5400 WARP Mentor
Former FRC 1687 Highlander Robotics
Metal of Honor - Battle Cry 13 @ WPI
WPI districts Semifinalists-2014
  #8   Spotlight this post!  
Unread 16-01-2013, 14:31
billbo911's Avatar
billbo911 billbo911 is online now
I prefer you give a perfect effort.
AKA: That's "Mr. Bill"
FRC #2073 (EagleForce)
Team Role: Mentor
 
Join Date: Mar 2005
Rookie Year: 2005
Location: Elk Grove, Ca.
Posts: 2,366
billbo911 has a reputation beyond reputebillbo911 has a reputation beyond reputebillbo911 has a reputation beyond reputebillbo911 has a reputation beyond reputebillbo911 has a reputation beyond reputebillbo911 has a reputation beyond reputebillbo911 has a reputation beyond reputebillbo911 has a reputation beyond reputebillbo911 has a reputation beyond reputebillbo911 has a reputation beyond reputebillbo911 has a reputation beyond repute
Re: Shooter Leaving marks on Disks

Quote:
Originally Posted by Paul T. View Post
has anyone found a way to avoid this?
Star Trek transporter.
__________________
CalGames 2009 Autonomous Champion Award winner
Sacramento 2010 Creativity in Design winner, Sacramento 2010 Quarter finalist
2011 Sacramento Finalist, 2011 Madtown Engineering Inspiration Award.
2012 Sacramento Semi-Finals, 2012 Sacramento Innovation in Control Award, 2012 SVR Judges Award.
2012 CalGames Autonomous Challenge Award winner ($$$).
2014 2X Rockwell Automation: Innovation in Control Award (CVR and SAC). Curie Division Gracious Professionalism Award.
2014 Capital City Classic Winner AND Runner Up. Madtown Throwdown: Runner up.
2015 Innovation in Control Award, Sacramento.
2016 Chezy Champs Finalist, 2016 MTTD Finalist
  #9   Spotlight this post!  
Unread 16-01-2013, 14:38
Tom Line's Avatar
Tom Line Tom Line is offline
Raptors can't turn doorknobs.
FRC #1718 (The Fighting Pi)
Team Role: Mentor
 
Join Date: Jan 2007
Rookie Year: 1999
Location: Armada, Michigan
Posts: 2,532
Tom Line has a reputation beyond reputeTom Line has a reputation beyond reputeTom Line has a reputation beyond reputeTom Line has a reputation beyond reputeTom Line has a reputation beyond reputeTom Line has a reputation beyond reputeTom Line has a reputation beyond reputeTom Line has a reputation beyond reputeTom Line has a reputation beyond reputeTom Line has a reputation beyond reputeTom Line has a reputation beyond repute
Re: Shooter Leaving marks on Disks

We partially melted one.....

Realistically, they expect damage on these. Last year, the balls were destroyed after a day of play. These frisbees will hold up much better.
  #10   Spotlight this post!  
Unread 16-01-2013, 16:17
Kevin Sevcik's Avatar
Kevin Sevcik Kevin Sevcik is offline
(Insert witty comment here)
FRC #0057 (The Leopards)
Team Role: Mentor
 
Join Date: Jun 2001
Rookie Year: 1998
Location: Houston, Texas
Posts: 3,689
Kevin Sevcik has a reputation beyond reputeKevin Sevcik has a reputation beyond reputeKevin Sevcik has a reputation beyond reputeKevin Sevcik has a reputation beyond reputeKevin Sevcik has a reputation beyond reputeKevin Sevcik has a reputation beyond reputeKevin Sevcik has a reputation beyond reputeKevin Sevcik has a reputation beyond reputeKevin Sevcik has a reputation beyond reputeKevin Sevcik has a reputation beyond reputeKevin Sevcik has a reputation beyond repute
Send a message via AIM to Kevin Sevcik Send a message via Yahoo to Kevin Sevcik
Re: Shooter Leaving marks on Disks

Quote:
Originally Posted by Paul T. View Post
has anyone found a way to avoid this?
Just theorizing, but more gradual step up in wheel speed? As long as your frisbee isn't instantly accelerated to math the wheel velocity, you're gonna leave a mark. Slower relative speed will probably reduce or eliminate marks. So if you have three wheels that spin at 2k, 4k, and 6k, you'd probably leave less marks than a shooter with just a 6k wheel.
__________________
The difficult we do today; the impossible we do tomorrow. Miracles by appointment only.

Lone Star Regional Troubleshooter
  #11   Spotlight this post!  
Unread 16-01-2013, 16:53
cloudroth6 cloudroth6 is offline
Registered User
FRC #4283
 
Join Date: Jan 2013
Location: Granville,Ohio
Posts: 18
cloudroth6 is an unknown quantity at this point
Re: Shooter Leaving marks on Disks

Quote:
Originally Posted by Paul T. View Post
has anyone found a way to avoid this?
With the testing we have done it looks like there is not a way to avoid it,with out lowing the speed of the wheels and there being less contact with the wheel and the Frisbee.
  #12   Spotlight this post!  
Unread 16-01-2013, 16:54
cloudroth6 cloudroth6 is offline
Registered User
FRC #4283
 
Join Date: Jan 2013
Location: Granville,Ohio
Posts: 18
cloudroth6 is an unknown quantity at this point
Re: Shooter Leaving marks on Disks

Quote:
Originally Posted by Paul T. View Post
has anyone found a way to avoid this?
With the testing we have done it looks like there is not a way to avoid it,without lowing the speed of the wheels and there being less contact with the wheel and the Frisbee and that would make the Frisbee shoot inaccurate.
  #13   Spotlight this post!  
Unread 16-01-2013, 21:57
Paul T.'s Avatar
Paul T. Paul T. is offline
Registered User
no team (Team WARP)
Team Role: Mentor
 
Join Date: Jan 2012
Rookie Year: 2012
Location: United States
Posts: 63
Paul T. is on a distinguished road
Re: Shooter Leaving marks on Disks

i understand and accept that there will be some rubber on the Frisbees but our shooter was leaving a 1/4 inch red streak across the entire Frisbee i'd be quite happy if that was reduced to a small smudge
__________________
ROOKIE Team 5400 WARP Mentor
Former FRC 1687 Highlander Robotics
Metal of Honor - Battle Cry 13 @ WPI
WPI districts Semifinalists-2014
  #14   Spotlight this post!  
Unread 16-01-2013, 23:32
Max Meaker's Avatar
Max Meaker Max Meaker is offline
Robotics Club Co-President
FRC #3786
Team Role: Mechanical
 
Join Date: Jan 2012
Rookie Year: 2011
Location: Renton, Washington
Posts: 14
Max Meaker is on a distinguished road
Re: Shooter Leaving marks on Disks

Our team switched to that exact same wheel for our prototype today. We found that it shoots significantly better than this year's KOP wheel and the 8" KOP wheels from 2 years ago. We also experienced the same red marking on our Frisbees. While the scuff marks are certainly visible, I don't think it's actually damaging the Frisbee.
  #15   Spotlight this post!  
Unread 17-01-2013, 08:34
protoserge's Avatar
protoserge protoserge is offline
CAD, machining, circuits, fun!
AKA: Some call me... Tim?
FRC #0365 (MOE) & former 836 Mentor)
Team Role: Mentor
 
Join Date: Jan 2012
Rookie Year: 2002
Location: Wilmington, DE
Posts: 751
protoserge has a reputation beyond reputeprotoserge has a reputation beyond reputeprotoserge has a reputation beyond reputeprotoserge has a reputation beyond reputeprotoserge has a reputation beyond reputeprotoserge has a reputation beyond reputeprotoserge has a reputation beyond reputeprotoserge has a reputation beyond reputeprotoserge has a reputation beyond reputeprotoserge has a reputation beyond reputeprotoserge has a reputation beyond repute
Re: Shooter Leaving marks on Disks

Go with the spirit of the rule on this one. Scuffing up is expected on shooters. It's going to be extremely hard to not do so.

A robot that pinches a frisbee to pick it up, and in doing so cracks it, is not going to fly (or climb??? ).
Closed Thread


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


All times are GMT -5. The time now is 16:36.

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