Go to Post We may be changing cheese heads for cheesy poofs, but in the imortal words of Gen. MacArthur "we shall return" (team # 2437) - cdebo [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 29-01-2003, 10:51
Stephen P's Avatar
Stephen P Stephen P is offline
Registered User
#1093
Team Role: Mechanical
 
Join Date: Jan 2003
Rookie Year: 2003
Location: Richmond VA
Posts: 113
Stephen P has a spectacular aura aboutStephen P has a spectacular aura about
wheelchair wheels

Anhyone know how well those wheelchair wheels from the kit can get up that mesh? If the center ridges were removed via lathe or "grippified" can they push a bot up?
__________________
You know you are an electrical engineer when you can determine voltage relative to pain with a 5% error.
  #2   Spotlight this post!  
Unread 29-01-2003, 13:58
Dick Linn's Avatar
Dick Linn Dick Linn is offline
Registered User
no team (Synergy)
 
Join Date: Jan 2003
Rookie Year: 2001
Location: Midlothian, VA
Posts: 679
Dick Linn has a reputation beyond reputeDick Linn has a reputation beyond reputeDick Linn has a reputation beyond reputeDick Linn has a reputation beyond reputeDick Linn has a reputation beyond reputeDick Linn has a reputation beyond reputeDick Linn has a reputation beyond reputeDick Linn has a reputation beyond reputeDick Linn has a reputation beyond reputeDick Linn has a reputation beyond reputeDick Linn has a reputation beyond repute
Send a message via AIM to Dick Linn
Re: wheelchair wheels

We may use pneumatic tires, but if we do use the polyurethane tires, I will simply use a rough-tooth, round "rat-tail" wood file of the same diameter as the partial grooves in the tread ( maybe 5/16 ?) and file a groove in the center raised portion. It connects much better with the mesh. I filed a couple of grooves and just did a drag test on the sample piece of mesh and the difference was amazing. I don't know how well the poly tire will hold up to this abuse, but you can always resharpen the edges of the groove periodically by cutting a fresh edge with a razor blade. Many motorcycle racers do this (or used to) to keep a sharp edge and reduce tire replacement costs. Just make sure you do not make the groove so deep that it protrudes below the surface of the mesh - see the rules on that one.
__________________
Richard Linn

Proud father of Marine LCpl. Karl R. Linn
Co-founder Team 975
KIA, Iraq 1/26/2005
  #3   Spotlight this post!  
Unread 02-02-2003, 18:10
MJAdams's Avatar
MJAdams MJAdams is offline
Registered User
#0461 (Westside Boiler Invasion)
 
Join Date: Dec 2002
Location: West Lafayette, IN
Posts: 6
MJAdams is an unknown quantity at this point
Exclamation

All I can say about the wheelchair wheels is DO NOT USE THEM AS IS.

This is a big time mistake that many teams use. They do not function especially well on carpeting and I can't imagine they would have the traction needed to get up the ramp. I would suggest resurfacing the wheels and placing some sort of high friction surface to the outside of the wheels to get better traction.

Just my 2 cents.

Matt
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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Need 6" wheelchair wheels! archiver 2001 5 24-06-2002 03:08
Grooving wheelchair wheels archiver 2001 5 24-06-2002 02:00
Lots of Wheels and F = u x N archiver 2001 17 23-06-2002 23:37
has anyone ordered the wheelchair wheels outside of skyway? archiver 2001 0 23-06-2002 23:17
"Motors and Drive train edition" of Fresh From the Forum Ken Leung CD Forum Support 6 29-01-2002 12:32


All times are GMT -5. The time now is 10:17.

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