go away spammer

Author Topic: Caster issues.  (Read 4507 times)

0 Members and 1 Guest are viewing this topic.

Offline Eco19RTopic starter

  • Full Member
  • ***
  • Posts: 104
  • Helpful? 0
Caster issues.
« on: June 21, 2007, 02:05:30 PM »
 I was wondering if anyone had any suggestions as what to use as a rear or front caster for a 2 wheel robot base, The issue is that any caster I can purchase where I live is too large for my needs, Omni wheels are something I will check out but I would like to come up with something that I can purchase around where I live.

Thanks for any help or information you can provide.

Offline hazzer123

  • Supreme Robot
  • *****
  • Posts: 460
  • Helpful? 3
Re: Caster issues.
« Reply #1 on: June 21, 2007, 02:12:56 PM »
Maybe try a furniture store? They have casters for sofas.

Or anything that slides maybe, depending on what terrain you robot is going to travel on.
Imperial College Robotics Society
www.icrobotics.co.uk

Offline Eco19RTopic starter

  • Full Member
  • ***
  • Posts: 104
  • Helpful? 0
Re: Caster issues.
« Reply #2 on: June 21, 2007, 02:13:43 PM »
All the casters I have found are too large.

Offline Jeff

  • Jr. Member
  • **
  • Posts: 9
  • Helpful? 0
Re: Caster issues.
« Reply #3 on: June 21, 2007, 02:33:46 PM »
If your on a hard surface you could use a teflon slide or something of the sort.

Offline Eco19RTopic starter

  • Full Member
  • ***
  • Posts: 104
  • Helpful? 0
Re: Caster issues.
« Reply #4 on: June 21, 2007, 03:17:02 PM »
Its going to go on carpet and hardwood flooring -  and it needs to be able to go across the transition between the two without getting stuck. I am thinking about just using a hard plastic ball that I drill a hole through. I might just buy a couple omni wheels.

Offline megaman935

  • Robot Overlord
  • ****
  • Posts: 182
  • Helpful? 0
Re: Caster issues.
« Reply #5 on: June 22, 2007, 09:52:45 AM »
the plastic ball seems....different..... ;D

Offline ed1380

  • Supreme Robot
  • *****
  • Posts: 1,478
  • Helpful? 3
Re: Caster issues.
« Reply #6 on: June 22, 2007, 11:34:36 AM »
I used a golf ball.
it was solid core so pre drilling and screwing in the screw was hard.
maybe glue on a ping pong ball?
Problems making the $50 robot circuit board?
click here. http://www.societyofrobots.com/robotforum/index.php?topic=3292.msg25198#msg25198

Offline Steve Joblin

  • Supreme Robot
  • *****
  • Posts: 405
  • Helpful? 2
    • Roebotz
Re: Caster issues.
« Reply #7 on: June 24, 2007, 10:25:54 AM »
I've gotten ball transfers from McMaster-Carr.com  They are used in conveyor systems... go to www.mcmaster-carr.com and search on "ball transfers... then narrow your search on "ball-down" types of ball transfers.

I have also had a lot of success with the Parallax Boe-bot which uses a delrin ball mounted using a cotter pin... check out http://www.parallax.com/detail.asp?product_id=700-00009 for details.

 


Get Your Ad Here