Bumper question

[ethen155]

So we ran into a problem climbing when we started to climb with our bumpers on. We were woundering if it is legal to have bumpers that don't completely cover the inside corners.

[Alan Anderson]

Bumpers must protect at least 8 inches on either side of an exterior vertex of your frame perimiter. Inside corners are not exterior vertices and do not require bumper protection. In fact, there are a number of rules that come together to make bumpers on inside corners practically impossible.

[vhcook]

Those are not outside corners, and as such are not part of your frame perimeter (see the lower left example in R22). The corners you have to cover are anywhere a string wrapped around your robot at bumper height would bend.

The tricky part here is the outer corner on either side of your V-notch need to have an 8" bumper segment toward the V (which I've tried to diagram for you - the 8" starts at the right angle corner and comes in toward the V). Assuming you've managed that, and the last inch at each end of those segments is supported by the frame (R29A), you're good to go.

[ethen155]

Great thanks.