[maverickfan138]

Our bumper design worked our extremely well for us this past year. We took some 3" angle brackets(placed in the corners) and screwed all four sides of our bumpers together in the permanent shape of the frame perimeter. We then added 1" angle brackets to attach our bumpers to the chassis. To put the bumpers on the robot, we would just slide the bumpers over the top, like how somebody would put on a t-shirt. To fasten, we drilled a hole in the 1" angle bracket and the chassis. We dropped a bolt with a loop of surgical tubing attached near the bolt head and looped the surgical tubing around the other end of the bolt. We did this on all four sides and it worked perfectly. With four students, we were able to change our bumpers in about 30 seconds.

The best bumper design that I saw this year were the ones with the folding fabric. They had Velcro on the top and bottom of the bumpers, and they would peel one side off and fold it(the seam ran horizontally along the middle of the bumper) to the other side, which was the opposite color.