Go to Post do i even have to say anything about hurricane jeanne after my comments about charley, frances and ivan? :mad: but if i could, i would run all of them over with my robot... - Arefin Bari [more]
Home
Go Back   Chief Delphi > Technical > Technical Discussion
CD-Events   CD-Media   CD-Spy   FRC-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 05-04-2012, 06:40 PM
Mk.32's Avatar
Mk.32 Mk.32 is offline
Registered User
AKA: Mark
FRC #2485 (W.A.R. Lords)
Team Role: Engineer
 
Join Date: Jan 2011
Rookie Year: 2011
Location: San Diego
Posts: 681
Mk.32 has much to be proud ofMk.32 has much to be proud ofMk.32 has much to be proud ofMk.32 has much to be proud ofMk.32 has much to be proud ofMk.32 has much to be proud ofMk.32 has much to be proud ofMk.32 has much to be proud ofMk.32 has much to be proud ofMk.32 has much to be proud of
2012 KOP Wheels failing.

We switched our robot to the 2012 kit of part wheels and after driving around a bit we had this issue:

http://24.media.tumblr.com/tumblr_m1...s4zo1_1280.jpg

The plastic around the bearing failed and the bearing came loose on the shaft. This was the middle wheel on the standard kit frame, at first we just thought it was a fluke however recently another wheel failed the same way.

So has anyone had this issue? We were thinking about filling the gaps around the bearing with epoxy so they hold up better.
__________________
Engineering mentor: Team 2485: WARLords 2013-
2014 San Diego Regional
2014 Las Vegas Regional

Team President: Team 3647 2010-2013
2013 Inland Empire Regional: Semi-Finalist 1323 and 399
2013 SD Regional
2012 BATB: Semifinalists 6399 and 2658
2012 La Fall Classic: Finalist 1538 and 3309
2012 Madtown: Quarter Finalists
2012 SD Regional
2011 BATB: Semifinalists (3647, 3633, 2102)
2011 LA Fall Classic: Finalists (3647,399,980/696)
2011 SD Regional
  #2   Spotlight this post!  
Unread 05-04-2012, 06:52 PM
Akash Rastogi Akash Rastogi is offline
Currently teamless
no team
Team Role: Alumni
 
Join Date: Feb 2007
Rookie Year: 2006
Location: Mt. Olive, NJ/ Syracuse, NY
Posts: 6,671
Akash Rastogi has a reputation beyond reputeAkash Rastogi has a reputation beyond reputeAkash Rastogi has a reputation beyond reputeAkash Rastogi has a reputation beyond reputeAkash Rastogi has a reputation beyond reputeAkash Rastogi has a reputation beyond reputeAkash Rastogi has a reputation beyond reputeAkash Rastogi has a reputation beyond reputeAkash Rastogi has a reputation beyond reputeAkash Rastogi has a reputation beyond reputeAkash Rastogi has a reputation beyond repute
Re: 2012 KOP Wheels failing.

We had a similar issue with one of our direct driven wheels. The area that the hub was attached to was stripped of material and the threads of the bolt pattern were stripped. For us, I don't think it was due to the product though, we caught the edge of a bridge while driving off of it and I think that's what caught the wheel and sort of pulled it apart from the hub.
__________________
My posts do not necessarily reflect the views & opinions of affiliated teams.

['13- 14]: Alumni/Mentor FRC 11 - MORT 2014 Robot Reveal
['12-'14]: Mentor FRC 2495

['11-'13]: Co-Founder/Mentor FRC 3929
['06-'10]: Student FRC 11- MORT
['08-'12]: Founder - EWCP
  #3   Spotlight this post!  
Unread 05-04-2012, 06:56 PM
Mk.32's Avatar
Mk.32 Mk.32 is offline
Registered User
AKA: Mark
FRC #2485 (W.A.R. Lords)
Team Role: Engineer
 
Join Date: Jan 2011
Rookie Year: 2011
Location: San Diego
Posts: 681
Mk.32 has much to be proud ofMk.32 has much to be proud ofMk.32 has much to be proud ofMk.32 has much to be proud ofMk.32 has much to be proud ofMk.32 has much to be proud ofMk.32 has much to be proud ofMk.32 has much to be proud ofMk.32 has much to be proud ofMk.32 has much to be proud of
Re: 2012 KOP Wheels failing.

Quote:
Originally Posted by Akash Rastogi View Post
We had a similar issue with one of our direct driven wheels. The area that the hub was attached to was stripped of material and the threads of the bolt pattern were stripped. For us, I don't think it was due to the product though, we caught the edge of a bridge while driving off of it and I think that's what caught the wheel and sort of pulled it apart from the hub.
We never really subjected these wheels to an excessive large load, no bump just general driving and turning yet it still did this.
__________________
Engineering mentor: Team 2485: WARLords 2013-
2014 San Diego Regional
2014 Las Vegas Regional

Team President: Team 3647 2010-2013
2013 Inland Empire Regional: Semi-Finalist 1323 and 399
2013 SD Regional
2012 BATB: Semifinalists 6399 and 2658
2012 La Fall Classic: Finalist 1538 and 3309
2012 Madtown: Quarter Finalists
2012 SD Regional
2011 BATB: Semifinalists (3647, 3633, 2102)
2011 LA Fall Classic: Finalists (3647,399,980/696)
2011 SD Regional
  #4   Spotlight this post!  
Unread 05-04-2012, 07:12 PM
Billfred's Avatar
Billfred Billfred is offline
Win Anyway.
AKA: @WmLeverette, @GarnetSq, @SCRIW...
FRC #4901 (Garnet Squadron)
Team Role: Mentor
 
Join Date: Feb 2004
Rookie Year: 2004
Location: Columbi-YEAH!, SC
Posts: 7,426
Billfred has a reputation beyond reputeBillfred has a reputation beyond reputeBillfred has a reputation beyond reputeBillfred has a reputation beyond reputeBillfred has a reputation beyond reputeBillfred has a reputation beyond reputeBillfred has a reputation beyond reputeBillfred has a reputation beyond reputeBillfred has a reputation beyond reputeBillfred has a reputation beyond reputeBillfred has a reputation beyond repute
Re: 2012 KOP Wheels failing.

We haven't noticed any issues through three events--no bump driving, but a little bit of bridge fun.
__________________
William "Billfred" Leverette - Gamecock/Jessica Boucher victim/Facebook-er
Billfred's World Tour: USC Kickoff Palmetto CMP Robot Rodeo Manchester Kickoff Florida Palmetto CMP Capital Clash USC Kickoff FVC Orangeburg Florida Peachtree Palmetto CMP Mission Mayhem Exploding Bacon Vex Event Duel on the Delaware CalGames USC Kickoff Florida Chesapeake Palmetto CMP BattleCry Mission Mayhem Brunswick Eruption 6 Clemson Kickoff Chesapeake Palmetto CMP IRI TNT Greenville Tech Scrimmage Bayou Palmetto CMP IRI GRITS TNT Bayou Palmetto CMP IRI Citadel Kickoff Peachtree Palmetto CMP IRI TNT SCRIW Citadel Kickoff Peachtree Palmetto Championship IRI SCRIW II Chapin Kickoff Palmetto South Florida IRI SCRIW III Chapin Kickoff SC FTC CMP Palmetto SC FLL CMP Orlando CMP IRI? SCRIW IV (48,749.9 miles)

Rule #1: Do not die. Rule #2: Be respectful. Rule #3: Be safe. Rule #4: Follow the handbook.
  #5   Spotlight this post!  
Unread 05-04-2012, 07:29 PM
BrendanB's Avatar
BrendanB BrendanB is offline
The Wingman is coming for you!
AKA: Brendan Browne, Sensei, Mentuar
FRC #3467 (Windham Windup Robotics) 1519 (Alumni)
Team Role: Mentor
 
Join Date: Feb 2008
Rookie Year: 2003
Location: Londonderry/Windham NH
Posts: 2,515
BrendanB has a reputation beyond reputeBrendanB has a reputation beyond reputeBrendanB has a reputation beyond reputeBrendanB has a reputation beyond reputeBrendanB has a reputation beyond reputeBrendanB has a reputation beyond reputeBrendanB has a reputation beyond reputeBrendanB has a reputation beyond reputeBrendanB has a reputation beyond reputeBrendanB has a reputation beyond reputeBrendanB has a reputation beyond repute
Send a message via Skype™ to BrendanB
Re: 2012 KOP Wheels failing.

Our team had several of our KOP wheels fail this year. Unfortunately it was because of loctite! We switched them for IFI and Plactions in week 5.

I have seen several KOP wheels fail around the bearing like the one in your picture. This year I thought we would give them a try as the wheels had a nice grip to them but going over the bump was going to be too much for them.
__________________
[2003-2007]: FLL student
[2008-2010]: FRC 1519 student
[2011-current]: FRC 3467 mentor

2011 GSR Rookie Allstar
2012 GSR Motorola Quality Award CT Motorola Quality Award
2012 & 2013 River Rage Champions with 166 & 1519 and 1517 & 2648
2013 PTR 2nd Seed and Champions with 2648 and 2386 + Engineering Excellence Award Winners
2013 CHAMPIONSHIP Judges Award!!!
2013 Battlecry14 Champions with 195 & 663 and Silver Star Winners
2014 UNH District Champions with 58 & 4555 + Chairmans award winners
2014 Northeastern District Champions with 125 & 5000 + Engineering Inspiration Award Winners
VeloXion BAE Systems WillSeal IBM Veolia & Windham High School
  #6   Spotlight this post!  
Unread 05-04-2012, 07:38 PM
Eaglesdrb's Avatar
Eaglesdrb Eaglesdrb is offline
Registered User
FRC #2073 (EagleForce)
Team Role: Leadership
 
Join Date: Mar 2011
Rookie Year: 2009
Location: Elk Grove
Posts: 6
Eaglesdrb is an unknown quantity at this point
Re: 2012 KOP Wheels failing.

We went through two events without any problems with these wheels. However while we did do regular bridge work we did not go over the bump at all and I suspect that might be where these wheels aren't up to the task.
__________________
It is all skill and mostly luck.
Allons-y!
Invention is 93% Inspiration, 6% Electricity, 4% Evaporation, 2% Butterscotch Ripple

2010 - Finance Lead
2011 - Vice President / CADD
2012 - President / CADD
  #7   Spotlight this post!  
Unread 05-04-2012, 08:47 PM
Peyton Yeung's Avatar
Peyton Yeung Peyton Yeung is offline
Design, Build, Repeat
AKA: Peyton Yeung
FRC #0461 (Westside Boiler Invasion)
Team Role: Mentor
 
Join Date: Mar 2010
Rookie Year: 2009
Location: Kokomo, IN
Posts: 427
Peyton Yeung has much to be proud ofPeyton Yeung has much to be proud ofPeyton Yeung has much to be proud ofPeyton Yeung has much to be proud ofPeyton Yeung has much to be proud ofPeyton Yeung has much to be proud ofPeyton Yeung has much to be proud ofPeyton Yeung has much to be proud ofPeyton Yeung has much to be proud of
Re: 2012 KOP Wheels failing.

We have had the same thing happen to our plaction sheels. The plastic around the hubs broke and so this year we just used colsons and never had those problems.
__________________
2014 Boilermaker Semi finalist & Crossroads Quarter finalist
2013 Boilermaker Quarter finalist
2012 CAGE Semi finalist & Queen City Champion
2011 CAGE Quarter finalist & Midwest Semi finalist
2010 CAGE Quarter finalist, Boilermaker Champion, & Washington DC Quarter Finalist


  #8   Spotlight this post!  
Unread 05-04-2012, 10:01 PM
Mk.32's Avatar
Mk.32 Mk.32 is offline
Registered User
AKA: Mark
FRC #2485 (W.A.R. Lords)
Team Role: Engineer
 
Join Date: Jan 2011
Rookie Year: 2011
Location: San Diego
Posts: 681
Mk.32 has much to be proud ofMk.32 has much to be proud ofMk.32 has much to be proud ofMk.32 has much to be proud ofMk.32 has much to be proud ofMk.32 has much to be proud ofMk.32 has much to be proud ofMk.32 has much to be proud ofMk.32 has much to be proud ofMk.32 has much to be proud of
Re: 2012 KOP Wheels failing.

For the record no loctite was anywhere near the wheel.
Seeing this is an somewhat common issue we will probably fill the area around the bearing with some epoxy to help it hold up.
__________________
Engineering mentor: Team 2485: WARLords 2013-
2014 San Diego Regional
2014 Las Vegas Regional

Team President: Team 3647 2010-2013
2013 Inland Empire Regional: Semi-Finalist 1323 and 399
2013 SD Regional
2012 BATB: Semifinalists 6399 and 2658
2012 La Fall Classic: Finalist 1538 and 3309
2012 Madtown: Quarter Finalists
2012 SD Regional
2011 BATB: Semifinalists (3647, 3633, 2102)
2011 LA Fall Classic: Finalists (3647,399,980/696)
2011 SD Regional
  #9   Spotlight this post!  
Unread 05-04-2012, 10:33 PM
Brant Bowen Brant Bowen is offline
Registered User
no team (AndyMark, Inc.)
Team Role: Engineer
 
Join Date: Aug 2002
Rookie Year: 2001
Location: Westfield, IN
Posts: 184
Brant Bowen has a brilliant futureBrant Bowen has a brilliant futureBrant Bowen has a brilliant futureBrant Bowen has a brilliant futureBrant Bowen has a brilliant futureBrant Bowen has a brilliant futureBrant Bowen has a brilliant futureBrant Bowen has a brilliant futureBrant Bowen has a brilliant futureBrant Bowen has a brilliant futureBrant Bowen has a brilliant future
Send a message via AIM to Brant Bowen Send a message via Skype™ to Brant Bowen
Re: 2012 KOP Wheels failing.

I saw a few of these that were broken at Championships.

You said that the first one that broke was one of the middle wheels. What wheel was the second one that broke? Do you remember?
__________________
Operations Manager - AndyMark Inc.
Co-Volunteer Coordinator - Boilermaker Regional, Crossroads Regional, Indiana Robotics Invitational
  #10   Spotlight this post!  
Unread 05-04-2012, 10:34 PM
Mk.32's Avatar
Mk.32 Mk.32 is offline
Registered User
AKA: Mark
FRC #2485 (W.A.R. Lords)
Team Role: Engineer
 
Join Date: Jan 2011
Rookie Year: 2011
Location: San Diego
Posts: 681
Mk.32 has much to be proud ofMk.32 has much to be proud ofMk.32 has much to be proud ofMk.32 has much to be proud ofMk.32 has much to be proud ofMk.32 has much to be proud ofMk.32 has much to be proud ofMk.32 has much to be proud ofMk.32 has much to be proud ofMk.32 has much to be proud of
Re: 2012 KOP Wheels failing.

Quote:
Originally Posted by Brant Bowen View Post
I saw a few of these that were broken at Championships.

You said that the first one that broke was one of the middle wheels. What wheel was the second one that broke? Do you remember?
We broke one of the middle wheels, switched it then broke the other side middle wheel a week or so later.
__________________
Engineering mentor: Team 2485: WARLords 2013-
2014 San Diego Regional
2014 Las Vegas Regional

Team President: Team 3647 2010-2013
2013 Inland Empire Regional: Semi-Finalist 1323 and 399
2013 SD Regional
2012 BATB: Semifinalists 6399 and 2658
2012 La Fall Classic: Finalist 1538 and 3309
2012 Madtown: Quarter Finalists
2012 SD Regional
2011 BATB: Semifinalists (3647, 3633, 2102)
2011 LA Fall Classic: Finalists (3647,399,980/696)
2011 SD Regional
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 02:37 AM.

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


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright © Chief Delphi