The bumper series is based on the efficiency frame and was constructed to aid in propeller protection and help bump away from objects upon light impacts. This helps to keep propellers spinning allowing flight to continue, minimizing potential down time.
9 standoff mounting points are machined into each frame/bumper, 4 standoffs and screws are included to use the 4 mounting points at each corner. Additional standoffs and screws are required if using additional mounting points is desired.
To maximize performance these are currently limited to 8.5mm motors other frame/motor sizes will be considered upon request.