Convex Bumper/Frame Perimeter

[2011FRC0854]

I was wondering if you could have an indent in your frame. More information at http://forums.usfirst.org/showthread.php?p=44741 .

All I see in the rules is that we would have to have bumpers all along the indentation and we can't have anything starting in the vertical projection of the indent (as it is part of our frame perimeter).

The only thing that worries me is the hint on finding your frame perimeter by wrapping string.

[2011FRC1009]

Can we have a concave robot bumper, or would that violate the 8" support rule since you specify the perimeter as defined as a string tied around the robot?

We want to make a inward curve on one side of our robot to match the curve on the Minibot race posts.

[2011FRC2729]

Our team would like to form one end of the robot to fit the base of the minibot tower. Are we allowed to have a convex end of the robot? The frame and robot bumpers would be built to conform to this shape, inwards to toward the middle of the robot.

Thanks!

Go teams!

[2011FRC1322]

Per K. BUMPERS must attach to the FRAME PERIMETER of the robot with a ridged fastening system to form a tight, robots connection to the main structure/frame


Definitions: FRAME PERIMETER

To determine the FRAME PERIMETER, wrap a piece of string around the HOST BOT at the level of the BUMPER ZONE – the string describes this polygon.

The above description describes the FRAME PARIMETER but doe not describe the under size limitations. We would like to build a “V” shape in our frame perimeter but if we use a string as above we would be laying out the maximum frame perimeter and than there would be a gap in the string where the “V” would be. Our bumpers would be installed attached to the frame inside the “V” as descried in the rules and the segments would not be less than 6 inches. Can we build such a frame and be legal per the rules.

[2011FRC0263]

Is it legal for a section of the bumper perimeter to be concave of V shaped?

Thanks

[2011FRC3421]

Are the bumpers allowed to go inside of the bumper permiter? The rules clearly state about the exterior vertices but does not mention anything about inside corners. We are thinking of building a frame that has a V shaped section on the back of the robot so that when we approach the tower the tower would be in the center of the V. All sides of the frame would still be covered by bumpers, there would be no sections of bumpers that would be unsupported. The entire frame would be covered by bumpers.


I have included a photo of a frame simlar in design to what we are thiniking but instead of 2 V shapes we would only have a single V shape on one side of the robot and the other 3 sides would be flat.

[2011FRC2990]

Is it possible to have a rectangular shaped base to a robot, but one side be concave, so long as the bumpers still wrapped around the entire robot? This would technically make there be 5 sides instead of 4. (illustrated below)


Thank you!

[GDC]

The combination of R07-A and the definition of FRAME PERIMETER prohibit such a geometry.