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Unread 20-02-2011, 12:43
Jeffy's Avatar
Jeffy Jeffy is offline
Retired, for now
AKA: Jeff Gier
FRC #2410 (Metal Mustang Robotics) #159 (Alpine Robotics)
Team Role: College Student
 
Join Date: Mar 2008
Rookie Year: 2008
Location: Fort Collins
Posts: 523
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Wheel base and Pneumatic tires

This year, we decided to go with some COTS pneumatic wheels to give us an extreme amount of traction. However, we are having some difficulty with turning (as you might guess). I believe the design of the robot is solid, we are just missing something in the execution. In low gear (about 3.5ft/sec) the robot turns perfectly. In high gear (about 13.5 ft/sec) the robot turns decently, occasionaly it trips a breaker, most high gear turns need to be made as part of a fluid motion with driving forwards.
Here is what we have:
8 wheel drive with these: http://www.grainger.com/Grainger/ERW...PE1?Pid=search
The two (per side) center wheels are dropped 1/4 inch
The turning base is 24 inches wide from center to center of the wheels, and it is 13.5 inches in length from center to center.

For those that have experience with pneumatic wheels, I am looking to what types of modifications will increase handling. Right now, all i can think of is switching out wheels and air pressure. On the air pressure note: I am having a hard time finding a pump with a gauge that will read in the 20-35psi range.
__________________
Metal Mustang Robotics 2410 (2008-2011)
2008 STL Rookie All-Star
2010 GKC Finalists
2010 OKC Champions
Alpine Robotics 159 (2012-)
2012 CO Finalists

700 miles from home, 2 miles from FRC. Life is good.
 


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