> I tried a tube cut off at a 45 deg angel sticking straight into the
    > exhaust stream. It just barely moved the needle on the vacuum guage.
    > I wish I had known about those Jeg's inserts. I would have given them
    > a try.
    >
    > Bob W.
    >
    > snip......
    >
    > -
    >
    > What inserts are you talking about Bob?
    >
    > Allen
    > Houston

   The ones mentioned by Vince Orton in an earlier message. See:
   http://www.jegs.com/webapp/wcs/stores/servlet/product_10001_10002_21252_-1

   If that wraps and doesn't work use:
   http://tinyurl.com/2p4q7s

   Bob W.

   --
   N93BD - Rotary Powered BD-4 - http://www.bob-white.com
   3.8 Hours Total Time and holding
   Cables for your rotary installation - http://www.roblinphoto.com/shop/



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As an alternate you might consider the approach Steve Wittman used on
his 0-300 powered Tailwind.  At the base of the windshield he made a
pitot consisting of 1/2 in polyethylene tubing, and above the spar
carry-through he had an exhaust slightly flared with the mouth pointing
aft.  I asked him about the pressure differential and he was aware that
it didn't meet the specifications but he said that his gyros worked fine.

Philip


The Rotary Engine NewsLetter. Powered by Linux.
ACRE NL web site. http://www.rotaryeng.net
Copyright 1998-2006 All world wide rights reserved.