Thread: pic: Iso view
View Single Post
  #13   Spotlight this post!  
Unread 07-09-2004, 15:16
Paul Copioli's Avatar Unsung FIRST Hero Woodie Flowers Award
Paul Copioli Paul Copioli is offline
President, VEX Robotics, Inc.
FRC #3310 (Black Hawk Robotics)
Team Role: Engineer
 
Join Date: Jun 2001
Rookie Year: 2000
Location: Rockwall, TX
Posts: 1,384
Paul Copioli has a reputation beyond reputePaul Copioli has a reputation beyond reputePaul Copioli has a reputation beyond reputePaul Copioli has a reputation beyond reputePaul Copioli has a reputation beyond reputePaul Copioli has a reputation beyond reputePaul Copioli has a reputation beyond reputePaul Copioli has a reputation beyond reputePaul Copioli has a reputation beyond reputePaul Copioli has a reputation beyond reputePaul Copioli has a reputation beyond repute
Re: pic: Iso view

Rod,

I have done the math and something is not adding up.

CIM free speed = 5,500RPM
Gear Ratio to rear wheel = 8:1
Wheel Diameter = 6"

5500 / 8 = 687.5 RPM or 71.995 rad/sec
71.995 rad/sec * 3" (or .25 ft) = 17.99 ft/sec

Assuming some losses, you will be around 14 - 16 ft/sec, not 8!

-Paul