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Date: Sun, 17 Oct 1999 12:00:06 -0400
To: lancair.list@olsusa.com
From: Marvin Kaye <marvkaye@olsusa.com>
Subject: LNC2 Elevator Control Horn Mod
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Posted for "Dr Michael A Fopp" <michael_fopp@csi.com>:

Dear All,

I have just decided to make the modification to the Mk II elevator control
horn. I have read instructions in the Sept/October 93 Lancair Mail and note
that the new rod end attachment position is raised 1" from the original. My
problem is that it seems that when I trim the weldment for elevator up
position clearance, I will necessarily have to remove at least half of the
elevator downstop plate. Has anybody else had this problem and, if so, what
was your solution? Is it possible that, because I am attempting this to an
aircraft which already has up/down stops installed, my options are reduced?
Has anybody tried a compromise of raising the hole a mere 1/2"?  I should,
perhaps, add that I complied with SB030-0597(Elevator travel stops)
differently than required by Lancair. Thus I do not have the phenolic block
type stops they recommended, but have an alternative "beefed up" adjustable
bolt head system as per the original Mk II elevator manual instructions.

I hope you can help.

The propeller arrived this week, just a few more "tweaks" to the engine
controls and I will fit it, which will allow me to re-manufacture the new,
longer, cowlings. If I can get this elevator business sorted, G-FOPP will
be ready for its second "first flight" by the end of the year.

Regards,
Michael.


[Michael, there came a point in time that the mod to the elevator pushrod
connection point was incorporated into all of the elevator weldments that
Lancair was producing, and I think it was pretty soon after the MKII tail
became available.  You might check with the factory and verify the actual
dimension of that connection point from the center of rotation on the
present weldments and compare it to yours... you might just find out that
your weldment already has the 1" shorter control horn and relocated pushrod
hole incorporated into it. 

    <Marv>            ]

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