Posted for "Chatfield S. Daniel" <csdaniel@FNBSouth.com>:

 Wolfgang,
 
 
 
 I have owned two TruTrak autopilots including the Sorcerer that I now have in
my Lancair Super ES.  My experience with TruTrak has been very good.  I have
contact with a group of Lancair and RV pilots who all fly the Chelton EFIS and
have issues with the Chelton properly communicating with their autopilots.
 Many of those have TruTrak autopilots and without exception, they all praise
the TruTrak.  There are many variables in a successful autopilot operation
including installation.  Do you have the servos located where TruTrak says
they should be?  Do you have the newer servos or the old ones that had some
loose play in the arm.  Do you have any loose motion from the servo to the
control surface?  Do you have problems when the autopilot is operating alone
or is it when it is getting input from another navigation device? Do you have
the lateral and vertical variables setup properly in the Sorcerer?
 

 
 My advice is to listen to the guys at TruTrak.
 
 
 
 Chat Daniel
 
 Lancair Super ES N891AC