Chief Delphi - Question About Bumpers (R19, Specifically)

Quote:

Originally Posted by Captain_Kirch (Post 1551532)

R:19 answers the question in this thread, Why is this picture wrong. It also explains away the misconception "bumpers always have to be at least 8 inches."

The pictures is wrong because the corner isn't covered on BOTH SIDES. Plain and simple. The other bumper is flagged because it covers an interior corner, not an exterior corner and is "Not a bumper"

Do your bumpers extend at least 8 inches from each outside corner? Do they fully cover any side less than 8 inches? If the answers to these questions is yes, you don't have to worry about R19

As long as teams understand what constitutes a "side". R19 is defined in terms of outside corners but teams seem to struggle with this and focus on the "if a side is shorter than 8 inches..." part of the rule.

The biggest issue seems to be that a through the frame perimeter intake system on a robot does not create two short sides. It creates a design problem, in that you still have one long side (with a gap in it) and need to have 8" of bumper, extending inward from the outside corners, with the result that your side had better be 16" plus the width of your intake. Which is why over the bumper intakes are popular.

I do think that the pictures in Figure 4-3 do a good job of capturing this.