Question about placement of bumpers

[juju_beans]

Do the bumpers have to be around the wheels, or can they be kind of on top the wheels. The bumprs if put on the top would be 9-10 in off the ground.

[EricH]

The bumpers need to be in the Bumper Zone, and on the Frame Perimeter.

You gave a height--if that height is to the bottom of your bumpers, you will not be legal, as the top will be OUT of the Bumper Zone (only goes up to 12"). If it's to the top of your bumpers, you'll probably be OK.

[GeeTwo]

Originally Posted by R22

BUMPERS must be located entirely within the BUMPER ZONE, which is the volume contained between two virtual horizontal planes, 4 in. above the floorand 12 in. above the floor, in reference to the ROBOT standing normally on a flat floor. BUMPERS do not have to be parallel to the floor.

As the bumpers must be 5" tall, they cannot be placed entirely above an 8" diameter wheel. They can still be well above the axles.

Also, the wheels cannot extend (at initial configuration) beyond the frame perimeter/inside edge of the bumpers. (see R4)

[juju_beans]

Ok thanks! Our plan is to have some pneumatics that can lift 2 ft pull the robot up and with yhe bumpers slightly up, it will start ud off at maybe 6 in off the ground already. As for the middle wheel, we will have to takr out the wheel bearings to push the shaft in farther.

[GeeTwo]

Originally Posted by juju_beans

Ok thanks! Our plan is to have some pneumatics that can lift 2 ft pull the robot up and with yhe bumpers slightly up, it will start ud off at maybe 6 in off the ground already. As for the middle wheel, we will have to takr out the wheel bearings to push the shaft in farther.

If I understand correctly, that would violate either R2 or R21G. (Emphasis mine)

Originally Posted by R2

The ROBOT must have a FRAME PERIMETER, contained within the BUMPER ZONE, that is comprised of fixed, non-articulated structural elements of the ROBOT. Minor protrusions no greater than ¼ in. such as bolt heads, fastener ends, and rivets are not considered part of the FRAME PERIMETER.

Originally Posted by R21

BUMPERS must be constructed as follows (see Figure 4-7):
.
.

• G. must attach to the FRAME PERIMETER of the ROBOT with a rigid fastening system to form a tight, robust connection to the main structure/frame (e.g. not attached with hook-and-loop, tape, or tie-wraps). The attachment system must be designed to withstand vigorous game play. All removable fasteners (e.g. bolts, locking pins, pip-pins, etc.) will be considered part of the BUMPERS.

Also see the blue box under R22 (part of Team Update 1).