REFLECTOR: TruTrak AP

[Chuck Jensen]

Al,
 
I'm fitted with a TruTrak Digiflight IIVSG (or something 'ruther).  The TruTrak has an 'activity' setting for the pitch and roll axis that be used to can compensate for the flying characteristics of most planes.  In general, the TT is rock solid with no porpoising or rolling--smooth or turbulent--once the activity level is set.  The only 'slop' in my control system is in the left seat.  If the plane is rigged properly, the TT A/P should handle it no problem.
 
Chuck
DO NOT ARCHIVE
 
 
-----Original Message-----
From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org]On Behalf Of Al Gietzen
Sent: Monday, May 16, 2005 11:31 AM
To: reflector
Subject: REFLECTOR: TruTrak AP



Anyone flying their Velocity with a TruTrak autopilot?

 

I mentioned here before that I was concerned about the amount of residual drag caused by the roll servo.  (The stepping motor on their AP does not disengage when the AP is turned off).  I am further concerned now that I have connected and adjusted the roll trim, and find that the stock roll trim cannot exert enough force to overcome the residual drag of the servo.  

 

I realize that it is a different situation when flying and there are air loads on the control surfaces, but I can't help but think that servo drag will put a "hysteresis" into the controls so the controls would not "center" if you let go of the stick.

 

Just wondered what the actual flying experience is before I get upset that they don't use a servo that disengages the gearing when the autopilot is "disengaged"

 

Al

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