REFLECTOR: Dynon Autopilot

Geoff Gerhardt geoff.gerhardt at gmail.com
Tue Apr 3 20:26:32 CDT 2012


David,

Remember, I don't have the factory trim, I have the Strong trim system, so
I don't have the big spring mounted on the canard.  That may be a better
place for the AP linkage if you don't have the Strong trim system.

Geoff

On Tue, Apr 3, 2012 at 7:46 PM, David Ullman <ullman at robustdecisions.com>wrote:

> Thanks for all the input.  Seems like for the elevator that Geoff Gerhardt
> connected straight to the elevator shaft whereas others have connected to
> the spring as with the trim actuator.  I know Geoff isn't in the air yet so
> no proof that this is a good place. Not clear the trade-offs here.  Need to
> think on that.
>
> For roll, most are at the "whale tail", but Michael Watson has his on the
> firewall.  Michael, do have any photos?  I like this idea as I am large and
> the thought of doing more work in the back of the cockpit has very little
> appeal for me.
>
> David Ullman
> N-444DX Velocity
> EAA 292 President
> david at davidullman.com
> 541-754-3609
> 1655 NW Hillcrest Dr
> Corvallis OR 97330
> -----Original Message-----
> From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
> Behalf Of reflector-request at tvbf.org
> Sent: Tuesday, April 03, 2012 11:36 AM
> To: reflector at tvbf.org
> Subject: Reflector Digest, Vol 85, Issue 7
>
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> Today's Topics:
>
>   1. Re:  Dynon Autopilot (Michael Watson)
>   2. Re:  Dynon autopilot (Ron N Velocity XLFG)
>   3. Re:  Dynon Autopilot (Scott Derrick)
>   4. Re:  Dynon Autopilot (Peter Braswell)
>   5. Re:  Dynon autopilot (Alex Balic)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 3 Apr 2012 13:22:03 -0400
> From: Michael Watson <mikewatsspg at gmail.com>
> To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
> Subject: Re: REFLECTOR: Dynon Autopilot
> Message-ID:
>        <CAPgogjOsxSxz_G3LQB8zLWu2ZqkAmsw2ZXmxULKYjwkqtB0vvA at mail.gmail.com
> >
> Content-Type: text/plain; charset="iso-8859-1"
>
> David,
>
> I've had my roll servo on the upper pilot side of the firewall for 12 years
> now.
> It's connected to the left aileron bell crank. Works perfectly, no heat or
> binding problems.
>
>
>
> On Tue, Apr 3, 2012 at 12:48 PM, David Ullman
> <ullman at robustdecisions.com>wrote:
>
> > Peter, thanks for the comments.  I actually finally got the roll trim
> > to work well on N444DX, an SEFG.  Ok course, this is not needed with
> > autopilot.
> > Space by the whale tail is cramped, thinking of putting servo in one
> > of the wing roots and driving the aileron bellcrank directly.  There
> > is very little play between the two ailerons , so this seems a good
> > solution for cramped space.  Might have a heat problem as this is very
> > near the cylinders, so.....  maybe not.  Any thoughts?
> >
> > David Ullman
> > N-444DX Velocity
> > EAA 292 President
> > david at davidullman.com
> > 541-754-3609
> > 1655 NW Hillcrest Dr
> > Corvallis OR 97330
> >
> >
> > _______________________________________________
> > To change your email address, visit
> > http://www.tvbf.org/mailman/listinfo/reflector
> >
> > Visit the gallery!  www.tvbf.org/gallery user:pw = tvbf:jamaicangoose
> > Check new archives: www.tvbf.org/pipermail Check old archives:
> > http://www.tvbf.org/archives/velocity/maillist.html
> >
>
>
>
> --
> Mike W.
> 1997 Velocity Elite RG
> Franklin /IVO Electric CS
> Dual GRT EFIS HX Synthetic Vision
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> ------------------------------
>
> Message: 2
> Date: Tue, 3 Apr 2012 12:31:24 -0500
> From: "Ron N Velocity XLFG" <VelocityXL at fastmail.fm>
> To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
> Subject: Re: REFLECTOR: Dynon autopilot
> Message-ID: <7C2AC99F801C498FA711BA79A5995840 at tungsten.com>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
>        reply-type=original
>
> Got pictures of you auto pilot elevator trim setup?
> ----- Original Message -----
> From: "Alex Balic" <velocity_pilot at verizon.net>
> To: "'Velocity Aircraft Owners and Builders list'" <reflector at tvbf.org>
> Sent: Tuesday, April 03, 2012 10:55 AM
> Subject: Re: REFLECTOR: Dynon autopilot
>
>
> >I placed my pitch servo on the canard top- actuates the elevator in the
> >same
> > manner as the pitch trim does, but works on the other elevator with a
> > second
> > attach point. The roll servo is mounted on the floor between the gear
> > bulkhead and the rear fins of the keel, actuates the arm that the flex
> > cables are attached to.
> >
> > -----Original Message-----
> > From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
> > Behalf Of David Ullman
> > Sent: Tuesday, April 03, 2012 7:35 AM
> > To: reflector at tvbf.org
> > Subject: REFLECTOR: Dynon autopilot
> >
> > Anyone flying with a Dynon autopilot?  I have a Skyview and just saved up
> > enough ($1500) for the servos but want to see how others have installed
> > them
> > (especially on roll) before I send money and spend time.
> >
> > David Ullman
> > N-444DX Velocity
> > EAA 292 President
> > david at davidullman.com
> > 541-754-3609
> > 1655 NW Hillcrest Dr
> > Corvallis OR 97330
> > *********
> >
> > _______________________________________________
> > To change your email address, visit
> > http://www.tvbf.org/mailman/listinfo/reflector
> >
> > Visit the gallery!  www.tvbf.org/gallery user:pw = tvbf:jamaicangoose
> > Check
> > new archives: www.tvbf.org/pipermail Check old archives:
> > http://www.tvbf.org/archives/velocity/maillist.html
> >
> > _______________________________________________
> > To change your email address, visit
> > http://www.tvbf.org/mailman/listinfo/reflector
> >
> > Visit the gallery!  www.tvbf.org/gallery
> > user:pw = tvbf:jamaicangoose
> > Check new archives: www.tvbf.org/pipermail
> > Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
> >
>
>
>
> ------------------------------
>
> Message: 3
> Date: Tue, 03 Apr 2012 11:37:18 -0600
> From: Scott Derrick <scott at tnstaafl.net>
> To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
> Subject: Re: REFLECTOR: Dynon Autopilot
> Message-ID: <4F7B354E.1030003 at tnstaafl.net>
> Content-Type: text/plain; charset="us-ascii"
>
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> ------------------------------
>
> Message: 4
> Date: Tue, 3 Apr 2012 13:53:12 -0400
> From: Peter Braswell <peter.braswell at gmail.com>
> To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
> Subject: Re: REFLECTOR: Dynon Autopilot
> Message-ID:
>        <CAP6bQxF+-LHKz0VcoRb43SAVYo793xvm97Qf6ssU--rivtgXAQ at mail.gmail.com
> >
> Content-Type: text/plain; charset="windows-1252"
>
> David,
> That's a great question and one that I'm hesitant to answer as I don't have
> any direct experience with the AP serves and the heat.  Looks like a couple
> of folks have chimed in and have indicated that this works just fine.  As
> most of the servo technology is basically the same (just a stepper motor),
> I'm speculating that Dynon would give similar performance.  I do know that
> some manufacturers (Trio in particular) put micro controllers in their
> servos, so that might be a factor too.  I'm not sure if Dynon has a Mc in
> their serves, but I don't *think* they do.
>
> Seems like a great place for them though ?
>
> -Peter
>
> ------------------------------------------------------------------------
> *"It's a Jungle Up There": www.zuluworks.com*
> *Great Aviation Gear: www.sky-gadgets.com*
> ------------------------------------------------------------------------
>
>
>
> On Tue, Apr 3, 2012 at 12:48 PM, David Ullman
> <ullman at robustdecisions.com>wrote:
>
> > Peter, thanks for the comments.  I actually finally got the roll trim to
> > work well on N444DX, an SEFG.  Ok course, this is not needed with
> > autopilot.
> > Space by the whale tail is cramped, thinking of putting servo in one of
> the
> > wing roots and driving the aileron bellcrank directly.  There is very
> > little
> > play between the two ailerons , so this seems a good solution for cramped
> > space.  Might have a heat problem as this is very near the cylinders,
> > so.....  maybe not.  Any thoughts?
> >
> > David Ullman
> > N-444DX Velocity
> > EAA 292 President
> > david at davidullman.com
> > 541-754-3609
> > 1655 NW Hillcrest Dr
> > Corvallis OR 97330
> >
> >
> > _______________________________________________
> > To change your email address, visit
> > http://www.tvbf.org/mailman/listinfo/reflector
> >
> > Visit the gallery!  www.tvbf.org/gallery
> > user:pw = tvbf:jamaicangoose
> > Check new archives: www.tvbf.org/pipermail
> > Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
> >
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> ------------------------------
>
> Message: 5
> Date: Tue, 03 Apr 2012 13:19:12 -0500
> From: "Alex Balic" <velocity_pilot at verizon.net>
> To: "'Ron N Velocity XLFG'" <VelocityXL at fastmail.fm>,   "'Velocity
>        Aircraft Owners and Builders list'" <reflector at tvbf.org>
> Subject: Re: REFLECTOR: Dynon autopilot
> Message-ID: <07ce01cd11c6$456e8480$d04b8d80$@net>
> Content-Type: text/plain; charset="us-ascii"
>
> I have this pretty bad picture taken during installation , I need to go out
> and take some new pics- will send them along. Basically, just built up a
> small mounting pad on top, made an aluminum bracket to mount it, and got a
> second attach bracket from Velocity and set it up pretty much like the
> trim.
>
> -----Original Message-----
> From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
> Behalf Of Ron N Velocity XLFG
> Sent: Tuesday, April 03, 2012 12:31 PM
> To: Velocity Aircraft Owners and Builders list
> Subject: Re: REFLECTOR: Dynon autopilot
>
> Got pictures of you auto pilot elevator trim setup?
> ----- Original Message -----
> From: "Alex Balic" <velocity_pilot at verizon.net>
> To: "'Velocity Aircraft Owners and Builders list'" <reflector at tvbf.org>
> Sent: Tuesday, April 03, 2012 10:55 AM
> Subject: Re: REFLECTOR: Dynon autopilot
>
>
> >I placed my pitch servo on the canard top- actuates the elevator in the
> >same
> > manner as the pitch trim does, but works on the other elevator with a
> > second
> > attach point. The roll servo is mounted on the floor between the gear
> > bulkhead and the rear fins of the keel, actuates the arm that the flex
> > cables are attached to.
> >
> > -----Original Message-----
> > From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
> > Behalf Of David Ullman
> > Sent: Tuesday, April 03, 2012 7:35 AM
> > To: reflector at tvbf.org
> > Subject: REFLECTOR: Dynon autopilot
> >
> > Anyone flying with a Dynon autopilot?  I have a Skyview and just saved up
> > enough ($1500) for the servos but want to see how others have installed
> > them
> > (especially on roll) before I send money and spend time.
> >
> > David Ullman
> > N-444DX Velocity
> > EAA 292 President
> > david at davidullman.com
> > 541-754-3609
> > 1655 NW Hillcrest Dr
> > Corvallis OR 97330
> > *********
> >
> > _______________________________________________
> > To change your email address, visit
> > http://www.tvbf.org/mailman/listinfo/reflector
> >
> > Visit the gallery!  www.tvbf.org/gallery user:pw = tvbf:jamaicangoose
> > Check
> > new archives: www.tvbf.org/pipermail Check old archives:
> > http://www.tvbf.org/archives/velocity/maillist.html
> >
> > _______________________________________________
> > To change your email address, visit
> > http://www.tvbf.org/mailman/listinfo/reflector
> >
> > Visit the gallery!  www.tvbf.org/gallery
> > user:pw = tvbf:jamaicangoose
> > Check new archives: www.tvbf.org/pipermail
> > Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
> >
>
> _______________________________________________
> To change your email address, visit
> http://www.tvbf.org/mailman/listinfo/reflector
>
> Visit the gallery!  www.tvbf.org/gallery
> user:pw = tvbf:jamaicangoose
> Check new archives: www.tvbf.org/pipermail
> Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
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> End of Reflector Digest, Vol 85, Issue 7
> ****************************************
>
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