REFLECTOR: Autopilot servos

Sat May 28 17:20:30 CDT 2011

Pete,

I'll get the pictures up for the servo mounting shortly.  I only have the
pitch trim mounted now.  I'm still considering whether I'll put the roll
trim on the firewall or right behind the keel whale tail (is that what you
call it?).  I'd prefer to put it behind the keel, but its pretty busy there
already as I've mounted my Lightspeed EI controller and Dynon engine monitor
there already.  Firewall mounting is easiest, but I'd prefer to keep the
servo it away from the engine heat.

Geoff

On Sat, May 28, 2011 at 5:35 PM, Peter Braswell <peter.braswell at gmail.com>wrote:

> Geoff,
> Sounds like you're making progress.  I have the SV system + AP installed in
> my Glastar and absolutely love it!  Going to install the system in my
> Velocity when it comes time which should be pretty cool.  If you have any
> pictures of the servo installation, I'd love to see ho you've ended up
> mounting them.
>
> Good luck,
> Peter
>
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> On Sat, May 28, 2011 at 1:19 PM, Geoff Gerhardt <geoff.gerhardt at gmail.com>wrote:
>
>> Peter,
>>
>> I found the torque adjustment - its set to 100%.  After playing with it a
>> bit, the AP servo can control over a pretty good range before it has to be
>> re-trimmed.  When the AP starts to sense a load, it notifies the pilot to
>> trim, and which direction to trim.
>>
>> Thanks.
>>
>> Geoff
>>
>> On Sat, May 28, 2011 at 11:20 AM, Peter Braswell <
>> peter.braswell at gmail.com> wrote:
>>
>>> Geoff
>>> There is a torque adjustment you can do in the set up and configuration
>>> menu if you need it.
>>>
>>> Peter
>>>
>>> Sent from my iPhone
>>>
>>> On May 28, 2011, at 9:51 AM, Geoff Gerhardt <geoff at thegerhardts.com>
>>> wrote:
>>>
>>> Scott/John,
>>>
>>> After playing with it a bit, and enabling altitude hold on the Dynon, I
>>> see that it give messages to trim.  Also, I ran the test procedure again
>>> with the trim adjusted right in the middle, the AP ran the pitch servo up
>>> and down over the relatively small range it uses to test successfully, so I
>>> think its functioning normal.  I'll post on the Dynon support forum just to
>>> check, tho.  Thanks.
>>>
>>> Looking fwd to Oshkosh - hoping to be flying there next year.
>>>
>>> Geoff
>>>
>>> On Sat, May 28, 2011 at 10:13 AM, Scott Derrick < <scott at tnstaafl.net>
>>> scott at tnstaafl.net> wrote:
>>>
>>>>  My Century AP asks me to adjust trim when the flight conditions
>>>> change.  There is no way the AP is going to overpower the trim spring and
>>>> flight loads.
>>>>
>>>> Your training the AP as to how far it "can" move. Not testing its
>>>> muscle.
>>>>
>>>> I think its functioning normally but a call to Dynon may be in order.
>>>>
>>>> Scott
>>>>
>>>>
>>>>
>>>>
>>>> -------- Original Message --------
>>>> Subject: REFLECTOR: Autopilot servos
>>>> From: Geoff Gerhardt < <geoff at thegerhardts.com>geoff at thegerhardts.com>
>>>> To: Velocity Aircraft Owners and Builders list < <reflector at tvbf.org>
>>>> reflector at tvbf.org>
>>>> Date: 05/28/2011 05:31 AM
>>>>
>>>> Hi all,
>>>>
>>>>  I installed my pitch autopilot servo and powered up my Dynon Skyview
>>>> to get it calibrated.  The calibration process has you move the pitch to its
>>>> extremes to set the endpoints.  Once calibrated, it tests the servo.  I have
>>>> the Strong Pitch trim installed, so it takes quite a lot of force to
>>>> overcome the pitch trim (not sure if this is similar to the factory trim
>>>> system).  Only with my help on the stick can the autopilot servo go to the
>>>> extremes - is that normal?  Is it expected that the pilot will keep
>>>> adjusting the pitch while on AP so the servo doesn't have to work too hard?
>>>>  Or, should I put a longer lever arm on the servo to increase the torque it
>>>> can deliver?
>>>>
>>>>  Thanks.
>>>>
>>>> Geoff
>>>>
>>>>
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>>
>>
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