---------------------------------------------------------- RV10-List Digest Archive --- Total Messages Posted Tue 04/16/19: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:56 AM - Re: Re: Elevator Pitch Servo Failure (Bill Watson) 2. 06:54 AM - Re: insurance (tsts4) 3. 07:18 AM - Re: Re: Elevator Pitch Servo Failure (Bill Boyd) ________________________________ Message 1 _____________________________________ Time: 05:56:40 AM PST US Subject: Re: RV10-List: Re: Elevator Pitch Servo Failure From: Bill Watson Didn't know that was an option. Just FYI, I have the 2 axis controller with the torque multiplier and TT Autotrim. It trims the elevator automatically well enough that I more often use the AP to set pitch trim than doing it myself. I also have safety trim. Bill "if I could just get the occasional wing wag out of my AP thru GRT HXr connection hands free flight would be perfect" Watson On 4/15/2019 7:15 PM, Eagerlee6 wrote: > > I have a two axis TruTrak DigiTrak autopilot with an AlTrak altitude hold and did NOT install the torque multiplier. When the elevator trim is set for light stick pressure the pitch servo has no problem(in 140 hours) keeping the altitude correct. Does anyone else use the stock servo without the enhancer? > > PH > > > On Apr 15, 2019, at 12:44 AM, RV10-List Digest Server wrote: > ______________________________Message 2 _____________________________________ > > > Time: 11:33:03 AM PST US > From: Jim Combs > Subject: RV10-List: Elevator Pitch Servo Failure > > Had an elevator pitch servo fail on a flight yesterday. The cable > pulled out of a hole that uses a set screw to hold the cable in place. > It's a TruTrak pitch servo. It uses a cable that wraps around a drum. > Each end of the cable is attached to an aluminum channel. > > 1200 hours on the airplane with no prior issues. The pilot said the > elevator felt funny on any up travel past neutral. He also heard a > clicking noise as it passed the neutral point. > > An engineering EC would be to leave the cable slightly long and crimp > a sleeve onto the cable as a a failsafe for the set screw(s). > > I will call TruTrak tomorrow to see if this should be replaced or > repaired. I will be adding this to my inspection checklist. I > noticed nothing during the last condition inspection. > > Not sure exactly when it failed. It was noticed prior to a return > flight from another airport. Removal of the bulkhead and removing the > control arm of the servo from the elevator bellcrank was done to allow > the flight home. > > N312F - 1200 hours > > Jim Combs > > --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus ________________________________ Message 2 _____________________________________ Time: 06:54:06 AM PST US Subject: RV10-List: Re: insurance From: "tsts4" I've used Falcon (via USAA/EAA) since I just had a builder's policy and couldn't be happier. -------- Todd Stovall aka Auburntsts on EAA, AOPA, and VAF RV-10 N728TT -- Flying Read this topic online here: http://forums.matronics.com/viewtopic.php?p=488763#488763 ________________________________ Message 3 _____________________________________ Time: 07:18:54 AM PST US From: Bill Boyd Subject: Re: RV10-List: Re: Elevator Pitch Servo Failure Has whatever y'all are talking about ever happened with a Dynon SV-42T servo? If not, I won't worry about it, but if it has, I want to understand the failure mode and its prevention. On Tue, Apr 16, 2019 at 9:01 AM Bill Watson wrote: > > Didn't know that was an option. > > Just FYI, I have the 2 axis controller with the torque multiplier and > TT Autotrim. It trims the elevator automatically well enough that I > more often use the AP to set pitch trim than doing it myself. I also > have safety trim. > > Bill "if I could just get the occasional wing wag out of my AP thru GRT > HXr connection hands free flight would be perfect" Watson > > On 4/15/2019 7:15 PM, Eagerlee6 wrote: > > > > I have a two axis TruTrak DigiTrak autopilot with an AlTrak altitude > hold and did NOT install the torque multiplier. When the elevator trim is > set for light stick pressure the pitch servo has no problem(in 140 hours) > keeping the altitude correct. Does anyone else use the stock servo without > the enhancer? > > > > PH > > > > > > On Apr 15, 2019, at 12:44 AM, RV10-List Digest Server < > rv10-list@matronics.com> wrote: > > ______________________________Message 2 > _____________________________________ > > > > > > Time: 11:33:03 AM PST US > > From: Jim Combs > > Subject: RV10-List: Elevator Pitch Servo Failure > > > > Had an elevator pitch servo fail on a flight yesterday. The cable > > pulled out of a hole that uses a set screw to hold the cable in place. > > It's a TruTrak pitch servo. It uses a cable that wraps around a drum. > > Each end of the cable is attached to an aluminum channel. > > > > 1200 hours on the airplane with no prior issues. The pilot said the > > elevator felt funny on any up travel past neutral. He also heard a > > clicking noise as it passed the neutral point. > > > > An engineering EC would be to leave the cable slightly long and crimp > > a sleeve onto the cable as a a failsafe for the set screw(s). > > > > I will call TruTrak tomorrow to see if this should be replaced or > > repaired. I will be adding this to my inspection checklist. I > > noticed nothing during the last condition inspection. > > > > Not sure exactly when it failed. It was noticed prior to a return > > flight from another airport. Removal of the bulkhead and removing the > > control arm of the servo from the elevator bellcrank was done to allow > > the flight home. > > > > N312F - 1200 hours > > > > Jim Combs > > > > > > > > > > > > > --- > This email has been checked for viruses by Avast antivirus software. > https://www.avast.com/antivirus > > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rv10-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RV10-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/rv10-list Browse Digests http://www.matronics.com/digest/rv10-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.