How quickly can it change the vacuum level?
Rate of change is highly dependent on air volume- i.e.; cylinder size. With a typical 2″ penis cylinder, the net volume in use is about 8 cubic inches. Removing only 1.33 CI will produce a 5″ vacuum level, which would take about 1/3 of a second for the QS-7. With a large cylinder like our ASTJ, the net volume might increase 10 fold to 80 CI, requiring the removal of 13.3 CI to achieve a 5″ vacuum. When the air volume goes up, the rate of change slows down. Penis cylinders will respond very fast, big combination cylinders will be slower. The amount of tubing and connections also affect flow rates and change timing. Being able to adjust the pressure and timing allows QS-7 users to compensate for many variables, within the systems design range.
