Rule R410

R410 *BUMPERS must be supported. BUMPERS must be supported by the structure/frame of the ROBOT (see Figure 8‑8). To be considered supported, a minimum of ½ in. (~13 mm) at each end of each BUMPER wood segment must be backed by the FRAME PERIMETER (≤¼ in. gap, ~6mm). Ends exclude hard BUMPER parts which extend past the FRAME PERIMETER permitted by R408-B. Additionally, any gap between the backing material and the frame:

A. must not be greater than ¼ in. (~6 mm) deep or

B. not more than 8 in. (~20 cm) wide

Figure 8‑8 BUMPER support examples

P1339#yIS1

The intent of this rule is to make sure the BUMPER wood is properly supported to minimize the likelihood of breakage on impact. Flexible ROBOT elements, such as thin plastic, do not accomplish this intent and are not considered structure/frame of the ROBOT.