100 includes an information handling system and receives or contains instructions to selectively operate valves 66 74 78 98 optionally valves 66 74 78 98 can include actuators not shown in communication with and or controlled by controller 100 that manipulate the valves 66 74 78 98 to limit travel of the bumper 56 the controller 100 can be set based upon an increase or decrease in fill volume that alters velocity of flow in one of the chambers 44 46 user defined set points can be input to the controller 100 for establishing limits of travel of the bladder 42 this can be manifested via control of the valves 66 74 96 98 so that they open and close at designated times and sequences so that travel of bladder 42 and or bumper 56 prevents or avoids collision with housing 40 moreover a set bias may be included with commands in the controller so that the control system automatically adjusts the set points to a higher or lower value to bring bladder travel within a safe range and thereby avoid any damaging contact examples exist wherein volume in one of the chambers 44 46 at a maximum stroke ranges from about 15 gallons to about 55 gallons by setting the set points with an included bias the set points are.