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Unread 14-06-2007, 23:56
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Re: Unibody/Monocoque Construction

Quote:
Originally Posted by Jim Zondag View Post
To Follow up on Woody's note above:
Team #33 has used a Structural Sheet Metal chassis design on several of our robots. Not exactly a monocoque, but similar. Like elaborated above by other teams; this is the strongest and lightest way to make many elements of a Robot. Our structural Chassis module is under 9 lbs including axles, motor mounts and battery tray, and it is very strong and very rigid. It has easily survived over 13 FIRST events of other teams relentlessly pounding on us and I have yet to have a failure of any kind. This design is a mix of .063", .050" and .040" T6 6061 Aluminum. We use 5/32 Alum/Alum Rivets for most of the jointery any use 10-24 screws with Jnuts for the wheel enclosure in case we want to go in an service the chains. We plan to post the complete set of CAD models, shop drawings and Assembly instructions to our team website later this summer (www.killerbees33.com)
Wow, that is beautiful... It's hard to imagine that whole frame weighs less than my 12lb battlebot.

Are the wheels sheet Al as well? How much do they weigh?