FRCTools

R404       *BUMPERS must be soft. Hard parts of BUMPERS must not extend more than 1.25in (3.17cm) out 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 2.0in (5.08cm) beyond any hard parts of the BUMPER. There is no limit on how far BUMPER hard parts may extend inside the ROBOT PERIMETER.

Figure 8‑8 BUMPER Hard Parts Limit

Image showing BUMPER Hard Parts Limit

Hard parts include any items which are likely to cause damage to the cloth or padding of other BUMPERS such as nuts and bolts, cable ties, hard plastics, etc.

Similar Rules

Rule R403
R403       *BUMPER extension limit. BUMPERS must not extend more than 4.0in (10.16cm) from the ROBOT PERIMETER.
Rule R405
R405       *BUMPERS interact with BUMPERS. While navigating the FIELD normally, all BUMPERS must have padding (per R402-A) supported by backing (per R402-B) entirely filling the BUMPER ZONE, a space between 2.5in (6.35cm) and 5.75in (14.61cm) from the floor.
Rule R409
R409       *BUMPERS should be passive. BUMPERS must be fixed relative to the ROBOT PERIMETER. BUMPERS may not contain any elements which move during the MATCH or electrical elements.
Rule R406
R406       *Fill BUMPER corners. Corner joints between BUMPERS must be filled with uncompressed padding material extending at least 2.25in (5.72cm) from the corner with no gaps or voids. Examples of implementation are shown in Figure 8‑10.