Go to Post Aww, but I ENJOY getting all up in arms about something that's ultimately inconsequential! - Cothron Theiss [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 17-01-2009, 20:16
bigbeezy's Avatar
bigbeezy bigbeezy is offline
Registered User
AKA: Bryan
FRC #2338 (Gear it Forward)
Team Role: Coach
 
Join Date: Dec 2006
Rookie Year: 2005
Location: Oswego, IL
Posts: 310
bigbeezy is a splendid one to beholdbigbeezy is a splendid one to beholdbigbeezy is a splendid one to beholdbigbeezy is a splendid one to beholdbigbeezy is a splendid one to beholdbigbeezy is a splendid one to beholdbigbeezy is a splendid one to beholdbigbeezy is a splendid one to behold
Send a message via AIM to bigbeezy
Re: pic: Wheel problem.

were u drifting onto the wood floor? and does the wood floor have a lot more friction? idk maybe the sliding sideways is fine on the regolith but when they go onto something of greater friction the wheels cant take it. i wouldnt think that would cause them to fail but its a possibility

o wait is the hub broke? maybe too much sudden torque like changing directions very quickly
Reply With Quote
  #2   Spotlight this post!  
Unread 17-01-2009, 20:22
NorviewsVeteran's Avatar
NorviewsVeteran NorviewsVeteran is offline
Precision Driver Extraordinaire
AKA: Richard Raitt
FRC #1793 (Pilots)
Team Role: Alumni
 
Join Date: Oct 2008
Rookie Year: 2006
Location: Norfolk VA
Posts: 569
NorviewsVeteran has a reputation beyond reputeNorviewsVeteran has a reputation beyond reputeNorviewsVeteran has a reputation beyond reputeNorviewsVeteran has a reputation beyond reputeNorviewsVeteran has a reputation beyond reputeNorviewsVeteran has a reputation beyond reputeNorviewsVeteran has a reputation beyond reputeNorviewsVeteran has a reputation beyond reputeNorviewsVeteran has a reputation beyond reputeNorviewsVeteran has a reputation beyond reputeNorviewsVeteran has a reputation beyond repute
Re: pic: Wheel problem.

It might be a general stress fracture, considering the wheels (hub and tire) have ZERO give when it comes to bumps, such as driving onto a panel. I sure hope it isn't common, and that you guys get replacement wheels soon.
__________________
______
I was in Scouts but I wanted out by the third meeting. I was in TSA, but I quit after a couple of weeks. I don't go camping with the SCA anymore. I was in taekwondo but I had to leave because I got sick.
I joined FIRST and stuck with it. It was nice enough to return the favor.

Reply With Quote
  #3   Spotlight this post!  
Unread 17-01-2009, 20:47
Unsung FIRST Hero Woodie Flowers Award
Chris Fultz Chris Fultz is offline
My Other Car is a 500 HP Turbine
FRC #0234 (Cyber Blue)
Team Role: Engineer
 
Join Date: Jan 2002
Rookie Year: 1942
Location: Indianapolis, IN
Posts: 2,831
Chris Fultz has a reputation beyond reputeChris Fultz has a reputation beyond reputeChris Fultz has a reputation beyond reputeChris Fultz has a reputation beyond reputeChris Fultz has a reputation beyond reputeChris Fultz has a reputation beyond reputeChris Fultz has a reputation beyond reputeChris Fultz has a reputation beyond reputeChris Fultz has a reputation beyond reputeChris Fultz has a reputation beyond reputeChris Fultz has a reputation beyond repute
Re: pic: Wheel problem.

can you post a picture of a wheel "as assembled"?

are you using a plate sprocket, or one with hubs?

if you are using a plate, is there enough clearance between the chain and the wheel material, or is there some rubbing?

We have been driving the new wheels for about 2 weeks on a practice chassis (with #35 chain, KOP bearings, fixed axles and aluminum sprockets) and have not seen any issues at all.
__________________
Chris Fultz
Cyber Blue - Team 234
2016 IRI Planning Committee
2016 IndyRAGE Planning Committee
2010 - Woodie Flowers Award - Championship
Reply With Quote
  #4   Spotlight this post!  
Unread 17-01-2009, 20:47
germanystudent's Avatar
germanystudent germanystudent is offline
Trashed and Scattered
AKA: Everett
FRC #2865 (Roboteknix)
Team Role: Mentor
 
Join Date: Sep 2008
Rookie Year: 2008
Location: Post Falls
Posts: 86
germanystudent has a spectacular aura aboutgermanystudent has a spectacular aura aboutgermanystudent has a spectacular aura about
Send a message via MSN to germanystudent
Re: pic: Wheel problem.

it might be the shock from the regolith to the wood... kinda like skidding out on ice then sliding onto pavement.
__________________
Nobody leaves my reality without a note from their mother!
Reply With Quote
  #5   Spotlight this post!  
Unread 17-01-2009, 20:49
dmcguire3006 dmcguire3006 is offline
Registered User
FRC #3006 (West High FIRST Robotics)
Team Role: Teacher
 
Join Date: Dec 2008
Rookie Year: 2009
Location: Salt Lake City, UT
Posts: 21
dmcguire3006 is on a distinguished road
Re: pic: Wheel problem.

Don't use LocTite on you wheels... It dissolves the plastic. Your picture is what our wheels looked like a day after we tapped the wheels for the 10-32 screws and applied LocTite.

Bummer!
Reply With Quote
  #6   Spotlight this post!  
Unread 17-01-2009, 21:01
gallo26's Avatar
gallo26 gallo26 is offline
Team 79 Alumni
AKA: Bryan Gallo
FRC #0079 (Team KRUNCH)
Team Role: Alumni
 
Join Date: Jan 2008
Rookie Year: 2007
Location: Largo, Florida
Posts: 113
gallo26 is a name known to allgallo26 is a name known to allgallo26 is a name known to allgallo26 is a name known to allgallo26 is a name known to allgallo26 is a name known to all
Send a message via AIM to gallo26
Re: pic: Wheel problem.

Well we did not locktite the wheels. It was hard enough to get those screws in there after we tapped the holes. But i do know that there is not a lot of friction on the wood. Its a gym floor. basketball court. whatever you want to call it. Theres no hub, just a sprocket spaced by the spacers provided with the wheels. Theres a ton of clearance using #35 chain. So... i hope it was a bad batch or something... because this competition requires drifting and sliding. Who knows what went wrong...
__________________
Team 79 Alumni '11- Present
Team 79 Driver '09, '10
Team 79 Senior CAD Designer '09, '10
Team 79 President '09
Team 79 Electrical Sub Team Leader '08, '09

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
Autonomous Two wheel problem??? fallen751 Programming 4 11-02-2007 23:07
Lowered Center Wheel for 6 wheel drive 987HighRoller Technical Discussion 37 17-01-2007 01:21
pic: Chantilly Academy's 4 Wheel Drive 4 Wheel Steering!!!! jskene Robot Showcase 25 18-02-2005 20:24
pic: da wheel CD47-Bot Robot Showcase 11 08-02-2004 22:04


All times are GMT -5. The time now is 18:35.

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