Mailing List lml@lancaironline.net Message #30286
From: Jeffrey Liegner, MD <liegner@earthlink.net>
Sender: <marv@lancaironline.net>
Subject: Gear Swing in LIVP: Change to CG?
Date: Tue, 07 Jun 2005 09:08:36 -0400
To: <lml@lancaironline.net>
Gear Swing in LIVP: Change to CG?
Question about Center of Gravity (CG) change with swinging the gear in the Lancair IVP.

The manual gives an moment (inch-arm) change of 1516 in-lbs, which results in a CG move aft of 0.50" when gear is retracted at ~3000 lbs.  At 2350 lbs, this changes the CG 0.65" aft.

I was recently told the actual change is 1.22" measured.

Has anyone else measured the actual CG change with gear swing (at empty weight)?

Jeff L

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