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Date: Fri, 23 Apr 1999 22:13:43 -0400
To: lancair.list@olsusa.com
From: Marvin Kaye <marvkaye@olsusa.com>
Subject: Hydraulic manifold
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>>
ACS sells some AL manifolds that I thought would be perfect for the
hydraulic system on my airplane... I was very surprised to see that they
limit the pressure on these units to 150psi, which obviously obviates their
use in this system.  Since I don't know what alloy they're made of, or
their actual dimensions, I can see no reason to question their
recommendation and court potential disaster.  My question is this... can
anyone out there see any reason why I can't manufacture my own manifolds
out of a piece of 1x1x3" 6061T6 with five 1/8NPT ports (one in the end and
4 cross-drilled and tapped)?   The wall thickness at any port would far
exceed the wall thickness of either the AL tubing which is being used,
or even the AN fittings which tie everything together, and I would think
that it should be more than capable of withstanding 1000psi, as that's
not all that much pressure.  What say you?

   <Marv>


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