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Originally Posted by Tom Line
I was not aware that the competition bridges are calibrated with springs. I was under the impression that they use their own considerable weight and the off-center position of their hinges to effect their self centering. Can you please point me to the documentation that led you to this conclusion?
In addition, I believed that the bridges needed to be within 5 degrees of level to be balanced. Where did the 15 degrees come from? That is a considerable angle.
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Hmm, maybe I'm assuming too much. I presumed springs were used, but I was wrong
It is, in fact, a double hinge.
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2.2.5 The Bridges
Robots traverse the center of the Court by crossing over either one of three Bridges or the 4 in. tall by 6 in. wide, smooth steel Barriers running between them. Each Alliance has one dedicated Bridge for their use at end of their Alley. An additional white Coopertition Bridge is located at the center of the Court. Each Bridge is 48 in. wide, 88 in. long (outside dimensions), and sits with the top platform 12 in. high off the ground when level. Each Bridge is mounted on a double-hinge that allows the Bridge to tip towards either end of Court. The top surface of each bridge includes an array of 15 small holes, details of which are included in the official field drawings.
A Bridge will count as Balanced if it is within 5° of horizontal and all Robots touching it are fully supported by it.
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There's the rule stating when the bridge is balanced. It was 5, not 15. Memory fails me again! I'll be doing more research next time I try to 'help' someone out