----- Original Message -----
From: <Lehanover@aol.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Sunday, November 24, 2002 5:15 AM
Subject: [FlyRotary] Re: Pump Curves - with core pressure drop curves


> In a message dated 11/23/2002 11:09:31 PM US Eastern Standard Time,
> eanderson@carolina.rr.com writes:
>
> > This is interesting.  I have my coolant pressure gauge after the
evaporator
> >  cores and my pressure decreases by around 5-7 psi when I go from idle
to
> >  5500 rpm.
> >
> >  Ed Anderson
> >
> Your gage is on the suction side of the loop. The engine and the cores
being
> the restriction. Lynn E. Hanover
>
> >>  Homepage:  http://www.flyrotary.com/

Right!  Also my pressure gauge fitting is on my header tank which "T"s into
the main coolant flow channel after the second evaporator core.  I expect
the "Siponing" effect, as the main flow rushes past the opening to the "T",
adds to the decrease in pressure shown by the gauge.

Ed