Pic: would this chassis shape be legal?

[jamie_1930]

Originally Posted by Creator Mat

OK my team wants to do something like this (see attached pic) for our chassis shape. we follow the bumper rules. Would this type of shape be legal when herding the balls? I think it is legal because the ball would be free to move within the indentation area and thus would not be possession. I want to find out what the rest of the FIRST community thinks. Also if you think this would break a bumper rule or some other rule beyond just the no possession rule please say something.

Note: the red strip on the ledge thing on the top is supposed to be the bumpers

The problem stems from

<R19> ROBOTS must be designed so that in normal operation BALLS cannot extend more than 3 inches inside the FRAME PERIMETER below the level of the BUMPER ZONE.

We had this discussion today and came to the conclusion and the fact is that since the perimeter is defined as

FRAME PERIMETER – the polygon defined by the outer-most set of exterior vertices on the ROBOT (without the BUMPERS attached) that are within the BUMPER ZONE. To determine the FRAME PERIMETER, wrap a piece of string around the ROBOT at the level of the BUMPER ZONE - the string describes this polygon.

It means that there are restriction on how deep that cut can be where you plan to hold the ball.

See the diagram on page 14 of Section 8 of the game manual for more clarification, if needed.