View Single Post
  #41   Spotlight this post!  
Unread 22-12-2007, 04:00
Cory's Avatar
Cory Cory is offline
Registered User
AKA: Cory McBride
FRC #0254 (The Cheesy Poofs)
Team Role: Engineer
 
Join Date: May 2002
Rookie Year: 2001
Location: Redwood City, CA
Posts: 6,812
Cory has a reputation beyond reputeCory has a reputation beyond reputeCory has a reputation beyond reputeCory has a reputation beyond reputeCory has a reputation beyond reputeCory has a reputation beyond reputeCory has a reputation beyond reputeCory has a reputation beyond reputeCory has a reputation beyond reputeCory has a reputation beyond reputeCory has a reputation beyond repute
Send a message via AIM to Cory
Re: 6WD Pros and Cons

Quote:
Originally Posted by nuggetsyl View Post
If you gear it right, 6 wheels are better for most first games. But not always.


P.S. do not lower the middle wheel on a 6 wheel drive robot.
C'mon Shaun. You have to know this statement is totally misleading.

The vast majority of teams who do 6wd need to drop the center wheels (even if only slightly) to allow their robots to turn. In the past, we have had turning issues, even on a robot with dropped center wheels.

As stated before, by dropping the wheels you effectively have shortened the wheelbase to 50% it's previous length, as your weight is being supported by 4 wheels at any given time. By shortening the wheelbase you make it much easier to turn.

Every year you guys claim your robot turns perfectly without a dropped center wheel. You are known for your high traction wheels, and you have a wheelbase length that is twice that of most other teams. While many teams have low gears for turning, you have only a single speed which is geared to 9+ fps.

Until you can show everyone the physics or math that validate that system, stating that no team should run a 6wd system with dropped center wheels just means that anyone who takes your advice will find themselves wondering what good it did to add 2 more wheels, when their robot still won't turn. Clearly your exact setup works well for you, but to claim categorically that you should not drop the center wheel is just plain wrong and totally misleading.
__________________
2001-2004: Team 100
2006-Present: Team 254

Last edited by Cory : 22-12-2007 at 05:08.
Reply With Quote