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Date: Fri, 17 Oct 2003 19:23:42 -0400
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From: Adam Molny <Adam@ValidationPartners.com>
Subject: Gear pump pressure switches
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Does anyone know why the up and down pressure switches have different
set points? Is it something to do with applying less force to the stops
in the up position?

I am still actively pursuing the sequenced gear doors, and brainstorming
several possible solutions. One solution is to use a unidirectional
pump, with valving to reverse the flow to the cylinders at the
appropriate times. This is how the Cessna 182RG does it. Typically, in
that case, there is only one pressure switch to shut off the pump. If
necessary, I can have two switches with different set points, with each
switch coming into play at the appropriate time, but I'd like to know
the reasoning behind it.

Thanks,
Adam Molny
Legacy #151