Quote:
Originally Posted by Gaz64
Bore size is irrelevant.
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Uhhh, are you sure about that? Lift force (for blowing that head up through the ceiling) is found by multiplying the pressure times the area. That's why a hovercraft can get off the ground by using only 7 lbs. of pressure.
Of course, you should not just take my word for it. See:
https://www.discoverhover.org/infoin...ors/guide4.htm