RE: an idea about my boost problem

["Buchholz, Steven" <Steven.Buchholz@kla-tencor.com>]

> > ... agreed.  What I suggested offline to Michael is that he could
> simulate
> > the reinforcements like are on the Audi-spec'd hose for the ur-q by
> > installing tie wraps every couple inches along the length of the hose
> ...
> 
> I'm having problems envisioning how this would help.  The problem is
> that the hose is collapsing in on itself.  The way I'm picturing your
> solution, it would only help if the hose was expanding outwards under
> pressure.
> 
> Am I missing something here?
> 
... what I am thinking is that the hose still has some sort of internal
reinforcement as a coolant hose has.  This reinforcement should prevent the
hose from "crumpling" as it collapses ... what I envision happening is that
under vacuum the hose's cross section becomes more and more elliptically
shaped.  The cross sectional area of the resulting ellipse is less than that
of the original circle (assuming the same circumference as the circle had),
meaning that it would be more and more difficult to get a given volume of
air to pass through ... thereby creating more of a vacuum ... and perhaps
more constriction.  

My completely untested thinking is that by snugging a tie wrap around the
hose every so often will make it less likely to distort from the circular
shape ... this may be completely faulty reasoning, but it is pretty cheap to
test ... :-)

Steve Buchholz
San Jose, CA (USA)