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From: "William T Bartlett" <wtbart@olympus.net>
To: <lancair.list@olsusa.com>
References: <19990424041454.AAA22625@truman.olsusa.com>
Subject: Hydraulid manifolds/hyd general
Date: Sat, 24 Apr 1999 09:57:29 -0700
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          <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>>
          <<  Lancair Builders' Mail List  >>
          <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> 
>>
Ross Colebrook (on list and ex Boeing Sr. Engr.) considerably straightened
out the hyd runs on his 235, making the system much simpler to install and
saving weight. Skip Van Ness, building on Ross's work, further simplified
the system using two manifolds such as Marv suggests. The saving of AN
fitting and hose exceeded the weight of the manifolds. Skip has access to
test bench and tested his far above LC20s working pressure. Ross has pictures.

> 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)?

I have some thoughts too.
mount the pressure switches forward on the lines where you can get at
them not on the power pack.  This also saves wiring.  Mount dump valve at
aft end of console.  In nose gear tunnel run one line in from each side.

    <Bill Bartlett>


[Skip sent photos of his manifolds, I'll upload them to the LML homepage in 
a few days.  As for wiring... my batteries will also be mounted to the
back of the firewall, but above the pilot footwell.  Master and starter
contactors will be right above the front of the nosegear tunnel, and hyd
power pack above pax footwell... my wiring will be very compaact indeed.
As for access to the pressure switches, I'm mounting them to the front of
the power pack already, and will have access hatches on both sides of the
front deck to get at the batts and hydraulics.  I do like your idea about
the dump valve at the back of the console, however, as my tunnel vision
has kept me from thinking about locating it anywhere other than where 
the manual recommends.  Excellent idea, thanks for sharing it.

Gee, I love this list!      <Marv>  ]

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LML homepage:   http://www.olsusa.com/Users/Mkaye/maillist.html