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Unread 03-01-2004, 02:12
Unsung FIRST Hero
JVN JVN is offline
@JohnVNeun
AKA: John Vielkind-Neun
FRC #0148 (Robowranglers)
Team Role: Engineer
 
Join Date: May 2001
Rookie Year: 2000
Location: Greenville, Tx
Posts: 3,159
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Re: Rubber conveyors & pneumatic tires...

Quote:
Originally Posted by Joe Johnson
I am going from memory, but I believe they the soft rubber cross hatch stuff came out best at 1.3 or something like that.
In my experience, 1.2 - 1.5 is a common value for the traction of most FIRST robots.

I measured the wedgetop (we call it "60 tread") at about 1.2-1.3. That stuff is great, except that it has relatively poor wear characteristics compared with other materials of comparable traction. If you use it, be prepared to swap out your wheels once or twice a regional.

Joe,
I've just recently been "enlightened" to the virtue of mountainboard wheels.
(http://www.chiefdelphi.com/forums/sh...ad.php?t=22844)

I'm thinking of using them this year, game permitting. It's good to hear they have your endorsement, especially concerning traction and wear.

We found that the pneumatic skyway wheels have similar characteristics, however those (especially the 6" ones) are a little harder to put a hub on that these appear to be.


Thanks for sharing,
John
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In the interest of full disclosure: I work for VEX Robotics a subsidiary of Innovation First International (IFI) Crown Supplier & Proud Supporter of FIRST