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R407       *BUMPERS shouldn’t be wedges. BUMPERS must not act as wedges when interacting with other BUMPERS.

Examples of BUMPERS which act as a wedge include:

A.      BUMPERS utilizing softer foam towards the top of a BUMPER profile

B.      BUMPERS utilizing excessively rounded profiles such as a single semi-circle

C.      BUMPERS with tapered or stepped padding such that the padding is thinner or thicker towards the top or bottom

Similar Rules

Rule R406
R406       *Fill BUMPER corners. Corner joints between BUMPERS must be filled with uncompressed padding material extending at least 2 ¼ in. (~58 mm) from the corner with no gaps or voids. Examples of implementation are shown in Figure 8‑7.
Rule R404
R404       *BUMPERS must be soft. Hard parts of BUMPERS must not extend more than 1 ¼ in. (~31 mm) from the ROBOT PERIMETER. Only padding (per R402-A), cover (per R402-C, including any coatings or markings), and soft fasteners used to secure padding or cover are permitted beyond this limit. Padding must extend at least 2 in. (~51 mm) beyond any hard parts of the BUMPER.
Rule R409
R409       *BUMPERS shouldn’t move. BUMPERS must not be articulated, relative to the ROBOT PERIMETER.
Rule R403
R403       *BUMPER extension limit. BUMPERS must not extend more than 4 in. (~101 mm) from the ROBOT PERIMETER.