Today's Message Index:
----------------------
1. 06:18 AM - Elevator Trim Servo (Ron Walker)
2. 06:28 AM - Re: Elevator Trim Servo (Phillip Perry)
3. 06:33 AM - Re: Elevator Trim Servo (Phillip Perry)
4. 08:15 AM - Re: Elevator Trim Servo (Marcus Cooper)
5. 04:35 PM - Re: F-1046 Longeron to F-1005E Gusset Holes (kearney)
6. 04:37 PM - Re: Tire / Brake Life (kearney)
7. 04:40 PM - Re: Elevator Trim Servo (Kelly McMullen)
8. 06:51 PM - Question for the IO-540 Engine Mavens (kearney)
9. 07:44 PM - Re: Question for the IO-540 Engine Mavens (David Carr)
10. 08:42 PM - Re: Elevator Trim Servo (Marcus Cooper)
11. 09:04 PM - Re: Elevator Trim Servo (Phillip Perry)
Message 1
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| Subject: | Elevator Trim Servo |
Doing some T&G last evening in the 10 ... with just me on board, final
typically has me full nose up on the trim - even with that, I still need
some back pressure ... but that's not the story.
Anyway, on roll-out, I was moving the tab back to neutral and realized
it was taking a LOT longer to reset than usual. Eventually I determined
that it was not moving at all. The trim had stopped in the full nose up
(tab down) position.
Some troubleshooting after shutdown revealed the mechanism is not
jammed, it still gets power - when activated, the unit does some
"whirring" - but the jack screw does not move. It appears something
INTERNAL to the unit has failed.
In all my years flying RV's, I've never heard of a single failure in
this manner. Anyone ?
Really wish I had used a DB9 or some other quick connect for this ...
--Ron
Message 2
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| Subject: | Re: Elevator Trim Servo |
We just replaced one on a -10 on our field. Exactly the same failure after some
T&G's in the evening. There was noise but no movement as a gear broke inside
the unit.
It was ~10 years old, FYI.
I suspect this servo gets more use (and high pressures on the mechanisms) than
any other servo (Aileron and rudder for those who have rudder trim).
Sent from my iPhone
> On Jul 8, 2017, at 7:18 AM, Ron Walker <n520tx@gmail.com> wrote:
>
>
> Doing some T&G last evening in the 10 ... with just me on board, final typically
has me full nose up on the trim - even with that, I still need some back pressure
... but that's not the story.
>
> Anyway, on roll-out, I was moving the tab back to neutral and realized it was
taking a LOT longer to reset than usual. Eventually I determined that it was
not moving at all. The trim had stopped in the full nose up (tab down) position.
>
> Some troubleshooting after shutdown revealed the mechanism is not jammed, it
still gets power - when activated, the unit does some "whirring" - but the jack
screw does not move. It appears something INTERNAL to the unit has failed.
>
> In all my years flying RV's, I've never heard of a single failure in this manner.
Anyone ?
>
> Really wish I had used a DB9 or some other quick connect for this ...
>
> --Ron
>
>
>
Message 3
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| Subject: | Re: Elevator Trim Servo |
Last message send too early.
So I have been disabling auto-trim on my auto pilot. Just to keep it from working
up a down until I can learn more about how much input it's putting into the
system. I really don't want to go on a 3 hour flight and have the auto-trim
running the tab the whole time when the trim is close enough that servo is close
enough to handle the loads.
So I've been using auto trim to get level and then shutting it down until it's
needed.
I don't know if it helps much, but I'm just hoping to extend the life of the servo
by running it when it really doesn't need to be running.
Phil
Sent from my iPhone
> On Jul 8, 2017, at 7:18 AM, Ron Walker <n520tx@gmail.com> wrote:
>
>
> Doing some T&G last evening in the 10 ... with just me on board, final typically
has me full nose up on the trim - even with that, I still need some back pressure
... but that's not the story.
>
> Anyway, on roll-out, I was moving the tab back to neutral and realized it was
taking a LOT longer to reset than usual. Eventually I determined that it was
not moving at all. The trim had stopped in the full nose up (tab down) position.
>
> Some troubleshooting after shutdown revealed the mechanism is not jammed, it
still gets power - when activated, the unit does some "whirring" - but the jack
screw does not move. It appears something INTERNAL to the unit has failed.
>
> In all my years flying RV's, I've never heard of a single failure in this manner.
Anyone ?
>
> Really wish I had used a DB9 or some other quick connect for this ...
>
> --Ron
>
>
>
Message 4
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| Subject: | Re: Elevator Trim Servo |
Phil,
What kind of autopilot do you have? Just curious as I currently have the TruTrak
which tells you a trim change is needed but doesn't actuate the trim. However,
I am about to do a big panel upgrade which includes going to a Garmin
G3X and Garmin autopilot servos and am wondering if it also ties into the trim?
Thanks,
Marcus
> On Jul 8, 2017, at 9:32 AM, Phillip Perry <philperry9@gmail.com> wrote:
> Do not archive
>
> Last message send too early.
>
> So I have been disabling auto-trim on my auto pilot. Just to keep it from working
up a down until I can learn more about how much input it's putting into
the system. I really don't want to go on a 3 hour flight and have the auto-trim
running the tab the whole time when the trim is close enough that servo is
close enough to handle the loads.
>
> So I've been using auto trim to get level and then shutting it down until it's
needed.
>
> I don't know if it helps much, but I'm just hoping to extend the life of the
servo by running it when it really doesn't need to be running.
>
> Phil
>
>
>
>
> Sent from my iPhone
>
>> On Jul 8, 2017, at 7:18 AM, Ron Walker <n520tx@gmail.com> wrote:
>>
>>
>> Doing some T&G last evening in the 10 ... with just me on board, final typically
has me full nose up on the trim - even with that, I still need some back
pressure ... but that's not the story.
>>
>> Anyway, on roll-out, I was moving the tab back to neutral and realized it was
taking a LOT longer to reset than usual. Eventually I determined that it was
not moving at all. The trim had stopped in the full nose up (tab down) position.
>>
>> Some troubleshooting after shutdown revealed the mechanism is not jammed, it
still gets power - when activated, the unit does some "whirring" - but the jack
screw does not move. It appears something INTERNAL to the unit has failed.
>>
>> In all my years flying RV's, I've never heard of a single failure in this manner.
Anyone ?
>>
>> Really wish I had used a DB9 or some other quick connect for this ...
>>
>> --Ron
>>
>>
>>
>
>
>
>
Message 5
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| Subject: | Re: F-1046 Longeron to F-1005E Gusset Holes |
Hi
I was reading this thread with some interest as I was about to do this step as
well.
Prior to drilling I marked where the holes would be using a sharpie through the
gusset holes. The edge distance was not good for the aft most holes.
The source of the problem was that the flange of the gusset was not parallel to
the skin / longeron.
I was think of using a shim to move the longeron inboard but then realized there
was a much simpler solution.
If you rotate the F-1005C you can get the gusset flange to line up parallel to
the skin. This will give good edge distance. You will need to rotate the F1005
beyond where you want it a sit will spring back a little.
Cheers
Les
C-GCWZ Flying
C-GROK some assembly required
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=470800#470800
Message 6
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| Subject: | Re: Tire / Brake Life |
Hi Bob
Thanks for the info. It will be most useful, I don't know much about tires.
Cheers
Les
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=470801#470801
Message 7
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| Subject: | Re: Elevator Trim Servo |
I have the Dynon Skyview autopilot system, which shows on screen a trim
command, which the autotrim then activates. At cruise the changes are
rather minor and infrequent. In the pattern I hand fly anyway and do my
own trimming.The Dynon autopilot panel adjusts trim motor speed
automatically to be inverse to airspeed.
On 7/8/2017 8:15 AM, Marcus Cooper wrote:
>
> Phil,
> What kind of autopilot do you have? Just curious as I currently have the
TruTrak which tells you a trim change is needed but doesn't actuate the trim.
However, I am about to do a big panel upgrade which includes going to a Garmin
G3X and Garmin autopilot servos and am wondering if it also ties into the trim?
>
> Thanks,
> Marcus
>
>> On Jul 8, 2017, at 9:32 AM, Phillip Perry <philperry9@gmail.com> wrote:
>> Do not archive
>>
>> Last message send too early.
>>
>> So I have been disabling auto-trim on my auto pilot. Just to keep it from working
up a down until I can learn more about how much input it's putting into
the system. I really don't want to go on a 3 hour flight and have the auto-trim
running the tab the whole time when the trim is close enough that servo is
close enough to handle the loads.
>>
>> So I've been using auto trim to get level and then shutting it down until it's
needed.
>>
>> I don't know if it helps much, but I'm just hoping to extend the life of the
servo by running it when it really doesn't need to be running.
>>
>> Phil
>>
>>
>>
>>
>> Sent from my iPhone
>>
>>> On Jul 8, 2017, at 7:18 AM, Ron Walker <n520tx@gmail.com> wrote:
>>>
>>>
>>> Doing some T&G last evening in the 10 ... with just me on board, final typically
has me full nose up on the trim - even with that, I still need some back
pressure ... but that's not the story.
>>>
>>> Anyway, on roll-out, I was moving the tab back to neutral and realized it was
taking a LOT longer to reset than usual. Eventually I determined that it was
not moving at all. The trim had stopped in the full nose up (tab down) position.
>>>
>>> Some troubleshooting after shutdown revealed the mechanism is not jammed, it
still gets power - when activated, the unit does some "whirring" - but the jack
screw does not move. It appears something INTERNAL to the unit has failed.
>>>
>>> In all my years flying RV's, I've never heard of a single failure in this manner.
Anyone ?
>>>
>>> Really wish I had used a DB9 or some other quick connect for this ...
>>>
>>> --Ron
>>>
>>>
>>>
>>
>>
>>
>>
>
>
>
>
>
Message 8
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| Subject: | Question for the IO-540 Engine Mavens |
Hi
Today I got a line on an IO-540 AE1A5 engine that was in a helicopter. It has 500
TSNew. It has had a the helicopter equivalent of a prop strike and so needs
to be inspected etc.
Can anyone tell me if it possible to use this engine as a core for use in a -10.
I would plan on having the engine inspected / overhauled / converted for use
on my project if it makes economic sense.
Inquiring minds need to know...
Les
C-GCWZ flying
C-GROK some assembly required
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=470805#470805
Message 9
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| Subject: | Re: Question for the IO-540 Engine Mavens |
Hi Les,
I don't thing this engine will be a good fit unfortunately. The IO-540
TCDS describes it as follows:
-AE1A5 - Similar to O-540-F1B5 with IO-540-K angle valve cylinders, pistons,
piston squirts and fuel injection and induction system.
It will have angle valve cylinders which are too wide for the RV-10 cowl.
It also weighs 416 lbs vs. the 379lbs of the stock D4A5. I'm not sure, but
it's also likely that the sump and/or case geometry may cause issues.
David
On Sat, Jul 8, 2017 at 8:51 PM, kearney <kearney@shaw.ca> wrote:
>
> Hi
>
> Today I got a line on an IO-540 AE1A5 engine that was in a helicopter. It
> has 500 TSNew. It has had a the helicopter equivalent of a prop strike and
> so needs to be inspected etc.
>
> Can anyone tell me if it possible to use this engine as a core for use in
> a -10. I would plan on having the engine inspected / overhauled /
> converted for use on my project if it makes economic sense.
>
> Inquiring minds need to know...
>
> Les
>
> C-GCWZ flying
> C-GROK some assembly required
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=470805#470805
>
>
Message 10
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| Subject: | Re: Elevator Trim Servo |
Thanks, I'll keep, an eye out for a similar system on the Garmin although I don't
think it has control of the trim motor.
Marcus
> On Jul 8, 2017, at 7:38 PM, Kelly McMullen <kellym@aviating.com> wrote:
> Do not archive
>
> I have the Dynon Skyview autopilot system, which shows on screen a trim command,
which the autotrim then activates. At cruise the changes are rather minor
and infrequent. In the pattern I hand fly anyway and do my own trimming.The Dynon
autopilot panel adjusts trim motor speed automatically to be inverse to airspeed.
>
>> On 7/8/2017 8:15 AM, Marcus Cooper wrote:
>> Phil,
>> What kind of autopilot do you have? Just curious as I currently have the
TruTrak which tells you a trim change is needed but doesn't actuate the trim.
However, I am about to do a big panel upgrade which includes going to a Garmin
G3X and Garmin autopilot servos and am wondering if it also ties into the trim?
>> Thanks,
>> Marcus
>>> On Jul 8, 2017, at 9:32 AM, Phillip Perry <philperry9@gmail.com> wrote:
>>> Do not archive
>>>
>>> Last message send too early.
>>>
>>> So I have been disabling auto-trim on my auto pilot. Just to keep it from
working up a down until I can learn more about how much input it's putting into
the system. I really don't want to go on a 3 hour flight and have the auto-trim
running the tab the whole time when the trim is close enough that servo
is close enough to handle the loads.
>>>
>>> So I've been using auto trim to get level and then shutting it down until it's
needed.
>>>
>>> I don't know if it helps much, but I'm just hoping to extend the life of the
servo by running it when it really doesn't need to be running.
>>>
>>> Phil
>>>
>>>
>>>
>>>
>>> Sent from my iPhone
>>>
>>>> On Jul 8, 2017, at 7:18 AM, Ron Walker <n520tx@gmail.com> wrote:
>>>>
>>>>
>>>> Doing some T&G last evening in the 10 ... with just me on board, final typically
has me full nose up on the trim - even with that, I still need some back
pressure ... but that's not the story.
>>>>
>>>> Anyway, on roll-out, I was moving the tab back to neutral and realized it
was taking a LOT longer to reset than usual. Eventually I determined that it was
not moving at all. The trim had stopped in the full nose up (tab down) position.
>>>>
>>>> Some troubleshooting after shutdown revealed the mechanism is not jammed,
it still gets power - when activated, the unit does some "whirring" - but the
jack screw does not move. It appears something INTERNAL to the unit has failed.
>>>>
>>>> In all my years flying RV's, I've never heard of a single failure in this
manner. Anyone ?
>>>>
>>>> Really wish I had used a DB9 or some other quick connect for this ...
>>>>
>>>> --Ron
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>>
>
>
>
Message 11
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| Subject: | Re: Elevator Trim Servo |
Marcus,
Sorry I missed our message. Fortunately I saw it on Kelly's reply.
I have the Garmin GX Pilot (TruTrak) with the G3X. It will tell you if you need
trim up or down and then you just add it manually.
For Auto-Trim, you have to get the Auto-Trim module from TruTrak and install it.
I can look at my AP head and see when trim inputs are being sent from the
TruTrak to the trim servo. Right now mine are fairly frequently and have experienced
a couple if moments where it was putting inputs in so quickly that be
plane never had time to respond before the next input was made. That created
and pretty aggressive oscillation of about 30 ft high to 30 ft low as the auto-trim
thought it was playing catchup, when in reality it was behind.
Before my next flight, I'm going to make an adjustment to reduce the frequency
of the auto-trim inputs. That will (should) give the plane some time to react
before the next trim command is issued.
Phil
Sent from my iPhone
> On Jul 8, 2017, at 5:38 PM, Kelly McMullen <kellym@aviating.com> wrote:
>
>
> I have the Dynon Skyview autopilot system, which shows on screen a trim command,
which the autotrim then activates. At cruise the changes are rather minor
and infrequent. In the pattern I hand fly anyway and do my own trimming.The Dynon
autopilot panel adjusts trim motor speed automatically to be inverse to airspeed.
>
>> On 7/8/2017 8:15 AM, Marcus Cooper wrote:
>> Phil,
>> What kind of autopilot do you have? Just curious as I currently have the
TruTrak which tells you a trim change is needed but doesn't actuate the trim.
However, I am about to do a big panel upgrade which includes going to a Garmin
G3X and Garmin autopilot servos and am wondering if it also ties into the trim?
>> Thanks,
>> Marcus
>>> On Jul 8, 2017, at 9:32 AM, Phillip Perry <philperry9@gmail.com> wrote:
>>> Do not archive
>>>
>>> Last message send too early.
>>>
>>> So I have been disabling auto-trim on my auto pilot. Just to keep it from
working up a down until I can learn more about how much input it's putting into
the system. I really don't want to go on a 3 hour flight and have the auto-trim
running the tab the whole time when the trim is close enough that servo
is close enough to handle the loads.
>>>
>>> So I've been using auto trim to get level and then shutting it down until it's
needed.
>>>
>>> I don't know if it helps much, but I'm just hoping to extend the life of the
servo by running it when it really doesn't need to be running.
>>>
>>> Phil
>>>
>>>
>>>
>>>
>>> Sent from my iPhone
>>>
>>>> On Jul 8, 2017, at 7:18 AM, Ron Walker <n520tx@gmail.com> wrote:
>>>>
>>>>
>>>> Doing some T&G last evening in the 10 ... with just me on board, final typically
has me full nose up on the trim - even with that, I still need some back
pressure ... but that's not the story.
>>>>
>>>> Anyway, on roll-out, I was moving the tab back to neutral and realized it
was taking a LOT longer to reset than usual. Eventually I determined that it was
not moving at all. The trim had stopped in the full nose up (tab down) position.
>>>>
>>>> Some troubleshooting after shutdown revealed the mechanism is not jammed,
it still gets power - when activated, the unit does some "whirring" - but the
jack screw does not move. It appears something INTERNAL to the unit has failed.
>>>>
>>>> In all my years flying RV's, I've never heard of a single failure in this
manner. Anyone ?
>>>>
>>>> Really wish I had used a DB9 or some other quick connect for this ...
>>>>
>>>> --Ron
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>>
>
>
>
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