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
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| Subject: | Re: Elevator Pitch Servo Failure |
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 <jiminlexky@gmail.com>
> 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
>
>
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Message 2
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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
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| Subject: | 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 <Mauledriver@nc.rr.com> 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 <jiminlexky@gmail.com>
> > 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
> >
> >
> >
> >
> >
>
>
> ---
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>
>
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