Bumper requirement.

[Whippet]

Originally Posted by matthewdenny

Technically isn't the 8" measures from the corner of the robot, not the corner of the bumpers? This would require it to extend an additional ~3.25" in to the gap on each side.

This is correct. I should have clarified that in the drawing, but that is why the arrows didn't extend all the way to the end of the bumper.

[cpapplefamily]

R26 then states BUMPERS must be supported by the structure/frame of the ROBOT

This would mean the front C-channel must extend in from the corner >=8" correct?

How much of the vertical 5" bumper backup board must be supported by the structure/frame?

[engunneer]

Originally Posted by cpapplefamily

R26 then states BUMPERS must be supported by the structure/frame of the ROBOT

This would mean the front C-channel must extend in from the corner >=8" correct?

How much of the vertical 5" bumper backup board must be supported by the structure/frame?

There are many ways to support it, but the simple version is to have the channel be 8" long. There is no specific amount in the vertical direction that needs to be supported. The main point of the rule is that you can't have the end of the bumper floating in free space. A flat sheet of thin metal that covers the entire back of the bumper also wouldn't count as supported for most inspectors.

My guideline is that if the bumper was not present, you wouldn't be able to bend the frame behind it easily by hand. If you are counting on the bumper to be a structural element of your frame, then it won't pass inspection.

[cpapplefamily]

No we would cut the regular c-channel to 8". Seems though we might only have the bottom 1 to 2" in contact with the frame. We will see, just wanted to know if there was a rule we had to pay attention to.

Thanks you all been a huge help