Mailing List lml@lancaironline.net Message #12318
From: Steve & Claudette Colwell <colwell@innercite.com>
Subject: Re: Elevator mis-match
Date: Thu, 14 Feb 2002 10:42:47 -0800
To: <glcasey@gte.net>, <lancair.list@olsusa.com>
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>I find that the
> trailing edge of one elevator doesn't match the other by about 1/8 to 1/4
> inch.  Should I worry about this?  If so, any suggestions about how to
> correct it?

I spent a lot of time getting a uniform gap (with enough room for paint)
between the trailing edge of the horiz stab and leading edge of the
elevators using only the two outboard hinges.  When I attached the
bellcrank/center hinge weldment to the left elevator it threw off the gap
about 1/16".  The fix was to elongate the two bolt holes in the weldment at
the inboard rib attachment and weld on machined flat washers to set the new
hole locations.  No big deal.

When I next attached the right elevator and bolted up the left and right
weldments at
the center hinge the gap was OK, but the trailing edges of the two elevators
were 3/8" to 1/2" off when checked with a water level.  (The horiz stab had
been pre-leveled with the water level.)  This seems like a lot, and more
than the above realignment would have caused. Same fix as above.

I assumed the hinges on the horizonal stab were straight since sighting thru
them
looked like a rifle bore, wrong!  Using centering pins in both outboard
hinges with
holes just large enough for mono filiment fishing line I determined the
inboard hinges
next to the center hinge on both sides are about 1/32 to 1/16" off.  This is
what started
the problem and the misalignments stack up from there.

Steve Colwell   Legacy 2K  Placerville,CA   (530) 621-3408

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