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Unread 15-01-2008, 13:02
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MrForbes MrForbes is offline
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AKA: Jim
FRC #1726 (N.E.R.D.S.)
Team Role: Mentor
 
Join Date: Feb 2006
Rookie Year: 2006
Location: Sierra Vista AZ
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Re: pic: Team 223 Chassis

Sure, I'll hold off on the criticism, and only stress the constructive.....

Last year we used a single 3" diameter, 1/16" thick round aluminum tube as a mast to support our arm. It worked very well, and allowed us to make a heavy drive base and a virtually untippable robot. Attatching the arm mechanism to the tube was fairly easy, once we figured out that we could make sheet aluminum brackets, and clamp them to the tube.

Making a drive base with the wheels going the long way results in a contact pattern of the wheels on the carpet that is about two feet square.

A pair of arms that are spaced about 26" apart will contact the ball about 4" off the floor. If they are activated as soon as the ball is fully on them, they might be able to lift the ball without the ball bouncing out first.

An amazingly light material is really nice for the upper part of the robot. An amazingly heavy material is really nice for the lower part of the robot.

Wheelie bars are not necessarily part of the chassis, they may be part of a mechanism.

Last edited by MrForbes : 15-01-2008 at 13:07.
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