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Unread 15-01-2008, 12:50
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Re: pic: Team 223 Chassis

Quote:
Originally Posted by Otaku View Post
Tall doesn't mean high CG, no.

However, tall & offcenter does mean unfavorable CG, typically.

Lets say that there is 60lbs there. Add in the chassis weight, lets say 15lbs, evenly distributed, and the rest of the 120lbs (putting 45lbs) on the other side. Divide that 15lbs for chassis by two and you get 67.5 (woo hoo) lbs on one side and 52.5lbs on the other side. Add in the height, and it gets pretty bad. Then add in the dimensions and it multiplies the problem.

And that's in the best-case, from what I can see.
I stand by my original statements. I highly doubt that 45 pounds is in that structure.

Considering that 1" square 1/16" wall is only .28 pounds per foot, I highly doubt there is any more than 10 pounds (and that's overestimating) in that structure.

As for it being off center, we have no idea what the rest of the robot is. It could have an arm that extends the other way and brings the CG perfectly in to balance.

And yes, not all old teams are capable, but a team capable of putting together a CAD that nice looking is most likely capable of setting material properties/weight and then going to view> Center of Gravity.

but then again, it's possible they used entirely heavy materials on the top while discovering some new amazingly light material to use on the base.

Until we get the details from 223, let's hold off on the immediate criticism shall we?
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