Sender: <marv@lancaironline.net> (Marvin Kaye)
To: lml
Date: Mon, 13 Jan 2003 09:29:39 -0500
Message-ID: <redirect-1982087@logan.com>
From: "Mike Hutchins" <mhutchins@attglobal.net>
Subject: Wing Incidence
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Hi Guys,

I am a bit surprised to learn that people are "finding" that their wing
incidence is different from side to side by as much as 2 degrees or that the
wing twist (washout) varies by more than 0.5 degrees. These are pretty
significant differences for such critical dimensions. I have several
questions for builders that have encountered these variances:

1. Is this problem unique to the L-IV, or has this problem cropped up with
the other models as well?

2. Are these problems particular to fastbuild wings or slowbuild wings?

3. Are any of these problems occuring on aircraft built at the Lancair
builders workshop?

4. Most importantly, what went wrong and how can it be prevented?

I have heard from another builder that the fastbuild wings can vary
significantly in the measured washout vs. what is called out in the plans.
Has anyone else found this to be true? Are these issues a good reason to
consider passing on the fastbuild wings and rigging your own jigs for the
slowbuild wings?

As I get closer to puting down my deposit for an L-IV, these are some pretty
fundamental issues that should be considered by any prospective builder.

Thanks in advance for your replys.

Best Regards,
Mike Hutchins