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<... That ambient pressure outside certainly needs to be accounted for ...>
OTOH, the back-and-forth between Rusty and I and others seems to indicate that 5 or
6 psi (or 10-12 in Hg) is all the boost anyone will reasonably need. So a popoff
valve set for 5 psi and forgotten would allow us to take off with 35" (in the
unlikely event we needed that much power) and turbo normalize to 15 k ft so it
would seem that a really dumb popoff valve would work OK.
Just a theory .... Jim S.
--
Jim Sower
Crossville, TN; Chapter 5
Long-EZ N83RT, Velocity N4095T
Marvin Kaye wrote:
Jim Sower <canarder@frontiernet.net> wrote:
>>>The pressure trying to OPEN the valve is MAP applied against the inside face
of
the valve. The pressure trying to CLOSE the valve is spring tension PLUS
ambient
pressure applied on the outside face of the valve.
You will have to somehow compensate for the ambient pressure outside the valve
<<<
You're absolutely right. Shortly after I hit the send button I realized the
folly of my ways <G>. That ambient pressure outside certainly needs to be
accounted for. Back to the drawing board.
<Marv>
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