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  #1  
Old 01-01-2017, 02:07 PM
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RVG8tor RVG8tor is offline
 
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Default Ditch Dynon Autopilot for Garmin

I bought my panel just before Skyview came out, mainly for the autopilot, never did I think that Dynon would not deliver on its promise to have full VNAV path approach capability for the legacy units. I understand business but.

I can't justify the time and expense to upgrade to Skyview so I have lived with my legacy Dynon IFR panel with a D-180, D-10A, autopilot with panel controls.

It seems that if I install the Garmin G5 (replaces D-10a) with autopilot servos and controls, I can then get VNAV path approach capability and nice things like variable VS climbs and descents as well as airspeed climbs.

My Aera 660 is plenty of map functionality, supplemented by the Garmin Pilot App for approach charts and larger map display.

Has anyone removed the Dynon autopilot and servos for the Garmin G5 with servos? On the surface it does not look like a terrible amount of work and or expense. Certainly cheaper than upgrading to a full Skyview, the labor for this is really what keeps me looking for another solution.


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  #2  
Old 01-01-2017, 03:34 PM
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donaziza donaziza is offline
 
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I hear a lot of "Grumbling" here on VAF about Garmin and Skyview. But never about GRT. Think I"ll go GRT
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  #3  
Old 01-01-2017, 07:50 PM
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Bubblehead Bubblehead is offline
 
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I love my SkyView and have not heard much grumbling about Dynon or SkyView on these forums. Great product, product support those few times necessary has been great, excellent value. I have been flying behind mine for 5 years and 400+ hours with two axis autopilot. Two years ago added ADSB and Mode S Dynon products.

I have no experience with the others but no squawks from me on Dynon.

Will the existing servos work with SkyView? If so by the time you replace 2 Dynon servos for Garmin you are probably at the price point for just adding SkyView and keeping existing servos and installation plus you get all the added SkyView functionality and screen size.

Plus if you are doing engine monitoring now the changeover will be easy. Adding the ADAHRS cost and hassle is the only other issue.

I look forward to hearing what you decide and how it works out.
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  #4  
Old 01-01-2017, 08:08 PM
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N941WR N941WR is offline
 
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Quote:
Originally Posted by RVG8tor View Post
...It seems that if I install the Garmin G5 (replaces D-10a) with autopilot servos and controls, I can then get VNAV path approach capability and nice things like variable VS climbs and descents as well as airspeed climbs.

My Aera 660 is plenty of map functionality, supplemented by the Garmin Pilot App for approach charts and larger map display.

...

Cheers
That doesn't get you IFR capability since the 660 isn't a "certified" navigation source.

Does the 660 stop outputting nav signals when it gets past Final Approach Fix? I seem to recall something about 496 doing that so people wouldn't use it for IFR flight.
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  #5  
Old 01-01-2017, 09:01 PM
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You don't get vertical navigation information from the Aera 660. You can do climbs and descents from the G5 and auto pilot, tú you can from the D180 and D10A as well. You just can't climb on airspeed on the Dynon. As others said, the upgrade to SkyView, especially if you buy a used 7" or 10" classic, won't be much, and the installation would be a lot easier. Also, you would get synthetic vision and a great moving map on the deal. The servos would not need to be changed and the engine sensors wouldn't need to be changed either.

If you went with an AFS, it will accept an RS232 input from the D180 for engine data, so you would have redundant ahrs. As others said, however, you can't fly IFR with an aera 660. You would need an IFR GPS or an appropriate Nav radio setup for that.

I would consider the G5 - great backup, but not a good primary efis. If you keep the D180 and D10A, then you already have a redundant ahrs. You would be better off, if you must change auto pilots, going with a TruTrak Vizion 385. You still don't get much, if any, more functionality than the Dynon.

The cheapest and easiest upgrade would be Dynon or AFS.
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  #6  
Old 01-01-2017, 09:52 PM
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Quote:
Originally Posted by donaziza View Post
I hear a lot of "Grumbling" here on VAF about Garmin and Skyview. But never about GRT. Think I"ll go GRT
I just finished upgrading my legacy Dynon to GRT gear with their autopilot. Only a few flights so far but I am quite happy with my decision. I am in the middle of my IFR training, and while I have to learn a new system, it is a BIG improvement for me.

The GRT setup was much less than the Skyview upgrade, even with their promotion, and I don't feel that I gave anything up, beyond my marker beacon indicators.

Larry
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  #7  
Old 01-01-2017, 11:50 PM
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RVG8tor RVG8tor is offline
 
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Default 430W

I did not mention it specifically but I do have the 430W for my "legacy IFR panel". I have the approach capability but the Dynon AP will not fly the vertical path and I am stuck with a single vertical speed, I can't just turn a knob and adjust vertical speed in climb or descent.

As far as cost the Garmin G5 with servos, AP control and GAD 29 is like 4K. That is half the cost of upgrading to SkyView not to mention a lot less labor.

I am just curious who might have done the switch.

In all honesty if I am going to rip out my panel and go to a bigger display I would go all Garmin, Dynon just left a bad taste in my mouth.

If Garmin can make a G5 Dynon could have at least improved the AP capability in the legacy system. I know many guys that like their Dynon set ups and I can vouch they have good customer service.

I am happy with my panel and don't require synthetic vision, though it is way cool. I just want better mode agility the Garmin AP gets me as well as VNAV coupled appproach. It would be nice if Dynon was offering an update to the legacy AP functionality. Hec, I could live with just have a knob on the AP-74 to change VS on the fly.

Note this is purely an nice extra, I have flown plenty of approachs with the Dynon, just hand flown down final. This is easy but having it coupled would be safer as a single pilot operation.

So how solid is the Garmin AP, the Dynon is good but wonders in heading and holding an ILS course. I know from riding with a friend the SkyView AP does a good job.

Cheers
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  #8  
Old 01-02-2017, 03:07 AM
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KRviator KRviator is offline
 
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I can't see how you worked out the cost to upgrade to SkyView as $8,000USD. To my mind, all you need to purchase to achieve what you want is a D-700 and an ADAHRS-200, for a cost of $3,900. I don't know if you need an ARINC module for a -430 though, so that might be a few hundred extra...

You get to keep your servos, the D-180 for EMS and redundant attitude, the existing wiring for the servos and I would honestly be surprised if you could not have this upgrade installed in an afternoon, versus a day or three to remove and replace Dynon for Garmin.
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  #9  
Old 01-02-2017, 05:52 AM
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Mike,

I have flown them all in my RV8's.
The basic tru track was rock solid.
The Legacy Dynon D180/ AP 74 sucked. (Wandered).
Sky view seemed to do better than the D180, but I only did some initial test flights on a couple of friends RV8s and no real approaches.

Garmin autopilot kicks butt! The autotrim even keeps up during flap deployment!

If you want to be absolutely sure you'll be happy, get the Garmin!

My 2 cents!
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  #10  
Old 01-02-2017, 01:31 PM
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g3xpert g3xpert is offline
 
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Quote:
Originally Posted by Jesse View Post
You don't get vertical navigation information from the Aera 660.
The Aera 660 most certainly supports vertical navigation (VNAV). I seldom arrive at pattern altitude without having performed a coupled VNAV descent from cruise altitude.

Just setup the VNAV profile you prefer to use one time, and it is always there to use for every descent. The autopilot will automatically capture the higher of either the selected altitude or the VNAV vertical target.



The Aera 660 even displays a vertical deviation bar for the VNAV guidance on both the 3D Vision page and the map page.



The Garmin autopilot control panels even have a dedicated VNAV mode button to arm for the VNAV capture and use this vertical navigation guidance.



The APR button on the autopilot control panel is used to arm for the vertical guidance on an approach if you are using a Garmin IFR navigator.

Thanks,
Steve
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