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  #1  
Old 01-27-2018, 07:08 PM
simatos simatos is offline
 
Join Date: Sep 2014
Location: vancouver canada
Posts: 114
Default Garmin G3X autopilot servo st up

Im setting up my pitch and roll servos G3X system in RV 7A. For the servos there is a gain and torque value of each. I wonder if anyone can suggest a preliminary starting value for:

Pitch gain and torque
and Roll gain and torque

as a starting point toward getting them adjusted.

Thank you
GAry
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  #2  
Old 01-27-2018, 08:02 PM
Mark H's Avatar
Mark H Mark H is offline
 
Join Date: Jul 2011
Location: Indianapolis, IN, USA
Posts: 86
Default

There are many threads about this subject. The values below are what Steve at g3xpert recommended a few months ago for the values they use in their RV-7A.


Roll Servo
Max Torque = 15%
Servo Gain = 0.40
Fine Adjust Amount = 1
Fine Adjust Time = 0.20

Pitch Servo
Max Torque = 30%
Servo Gain = 1.30
Fine Adjust Amount = 1
Fine Adjust Time = 0.20

Pitch Gain
Min Airspeed Limit = 65 kt (or as preferred)
Max Airspeed Limit = 180 kt (or as preferred)
Vertical Speed Gain = 1.00
Vertical Accel Gain = 1.00
Airspeed Gain = 1.00
Airspeed Accel Gain = 1.00

Electric Trim
Airspeed Thresholds = 80 kt / 150 kt
Roll Trim Motor Speed = 100% / 25%
Pitch Trim Motor Speed = 100% / 25%
__________________
Mark Hansen
Indianapolis, IN
RV-7A N896PS
Flying
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  #3  
Old 01-27-2018, 11:12 PM
simatos simatos is offline
 
Join Date: Sep 2014
Location: vancouver canada
Posts: 114
Default

Mark thats great, tommorow I plug all that in. Got my Cert of Airworthiness last week and would like to have all the G3X stuff configured for actually flying the plane which I hope will be the next sunny day. Of course weather here is supposed to be 10 days of rain according to the forecast
Thank your the info
cheers
Gary
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