Home > VansAirForceForums

- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics

Go Back   VAF Forums > Avionics / Interiors / Fiberglass > Autopilots
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Thread Tools Search this Thread Display Modes
Old 05-15-2017, 04:20 PM
Raymo's Avatar
Raymo Raymo is offline
Join Date: Nov 2014
Location: Richmond Hill, GA (KLHW)
Posts: 1,992

My roll servo went out prior to first flight and I had to do the same thing. I rang out the wires and knew they were good but Dynon wanted me to do the swap.

To make things easier, I made another servo harness so I could just plug the pitch servo wiring into the roll servo. Same problem so it went in for repair and came back working like new.
RV-7A - Slider - N495KL - First flt 27 Jan 17
O-360-A4M w/ AFP FM-150 FI, Dual PMags, Vetterman Trombone Exh, SkyTech starter, BandC Alt (PP failed after 226 hrs)
Catto 3 blade NLE, FlightLines Interior, James cowl, plenum & intake, Anti-Splat -14 seat mod and nose gear support
All lines by TSFlightLines

"The object of the game, gentlemen, is not to cheat death: the object is not to let him play."
Patrick Poteen, Sgt. U.S. Army
Reply With Quote
Old 05-15-2017, 08:33 PM
Aggie78 Aggie78 is offline
Join Date: May 2014
Location: Fort Worth, Texas
Posts: 382
Default Well, I was hoping for something sexy...

Like a failed pitch servo I could point at and go "A ha!" to.

Not to be.

Moving the pitch servo over the roll servo and hooking it up there and the pitch servo worked like a champ.

So...Not a servo issue, it's an accursed, mundane wiring issue. Bah!!

Tomorrow I do the deep dive behind/under the panel to find the offending connector/wire harness on that end.

Hopefully, it will just be the connector and not a cut wire under the floor somewhere.

Posting all of this for future Dynon troubleshooters....
Rob Schroer
T67-Hicks Airport, Texas
VAF Monthly Donor
Reply With Quote
Old 07-01-2018, 09:20 AM
Logan Logan is offline
Join Date: Nov 2014
Location: Houston, Tx
Posts: 48
Default Update?

Hi, Rob. Did you find a bad connection to this issue? I am facing same issue.

I had to swap pins in the Molex that powered the pitch servo and pitch trim to fix a reverse pitch trim issue. When I plugged it back in, I lost both AP servos. I am sure I must have messed something up in the molex, as it was the ONLY think I touched, but can't for the life of me get it back to working. Hoping for a new aha moment for something else to look at.

Logan Dent

RV-14A Complete!
Airworthiness cert issued June 27, 2018
Reply With Quote
Old 07-01-2018, 02:29 PM
Logan Logan is offline
Join Date: Nov 2014
Location: Houston, Tx
Posts: 48

Duh. Circuit breaker had tripped. As I am using a electronic circuit breaker system, I had to check the right page on the EFIS to see and reset it.

Posting to remind myself and others to start with simple checks first!
Logan Dent

RV-14A Complete!
Airworthiness cert issued June 27, 2018
Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

All times are GMT -6. The time now is 02:49 PM.

The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.