Date:	Fri, 27 Oct 1995 10:01:06 -1000
From:	Timothy Fricker <fricker+@andrew.cmu.edu>
Message-Id: <UkYHe2200iV1A6UowB@andrew.cmu.edu>
Organization: Drama, Carnegie Mellon, Pittsburgh, PA
Subject: Delta Questions

I have a large (14') delta that my brother-in-law and I built many years
ago, and I was looking for suggestions on alternative spar materials. 
It currently has 1/4" solid fiberglass rods for the wing and keel spars,
but they are really flexible and somewhat heavy.  At one time the cross
spar was (yikes) a piece of conduit.  I haven't flown it at all in many
years, but I would like to get it airborne again, and I was looking for
better materials for spars.  Any suggestions?  I have looked in some
catalogs, and I was thinking of something in hollow fiberglass, but I
have no idea what size would give the best strength/weight/stiffness
combination.  Any suggestions?

TF


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