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  #1  
Old 02-12-2018, 08:39 AM
AndyWW AndyWW is offline
 
Join Date: Jan 2015
Location: Englefield Green UK
Posts: 48
Default Autopilot Advice - Trutrak Vizion with Garmin G5?

My co-owners and I are looking at putting an autopilot and a Garmin G5 (or possibly 2) into our bought-flying VFR RV-6. It has a six-pack steam panel and we aren't planning to do a full panel upgrade at this time, so we are seeking improvements that fit into 3.125" holes and will look good mixed with the remaining gauges. We like the G5 a lot since it is bright, easy on the eyes and good value for money. However the Garmin autopilot control head isn't available in a round hole format as far as I am aware.

So the current front-runner solution is to replace the AI with a G5, replace the DG with another G5 (plus magnetometer) for HSI (so that we can rip out the vacuum system), and replace our (broken) TC with a Trutrak Vizion 3 autopilot.

My questions are:
1) Does this make sense as a solution? Is there a better option?
2) Will the G5 play nicely with the Vizion?
3) If the G5 failed would the autoilot still provide wing leveller and altitude hold?
4) We have a Skymap IIIC which I think might be able to interface with the Vizion, but I'm not sure. Anyone tried it?

Thanks in advance for any help or suggestions.
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  #2  
Old 02-12-2018, 11:06 AM
BobTurner BobTurner is offline
 
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Location: Livermore, CA
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Default

Take a look at the Trio Pro. I have a preference for a clutch connected servo (Trio) which is physically disconnected when not in use.
Im not sure any non-Garmin equipment plays well with Garmin, they tend to keep some software interfaces propriatary. Have you looked at the GRT mini series? I know they interface with Trio and TruTrak.
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  #3  
Old 02-12-2018, 02:55 PM
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olyolson olyolson is offline
 
Join Date: Dec 2009
Location: St Louis, MO
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Default G5 & Trio

Andy,

You will like the G5 setup and you can even get a single or dual flush mount to make the panel look really nice. I have a magnetometer for my single G5 (with backup battery) and have ditched the whiskey compass for good. I really like all the info available in the G5 and it is plenty bright enough in direct sunlight.

I concur with the Trio Pro Pilot autopilot with gold servos. Trio makes a great product, excellent support and the Pro Pilot fits a standard 3 1/8 hole. My trio works well and will fly all the approaches in my Aera 660 which is tied into the Trio via RS 232. I have the EZ Pilot (course/hdg) and the EZ-3 (altitude) which is a bit cheaper but very capable.

Oly
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  #4  
Old 02-12-2018, 06:54 PM
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g3xpert g3xpert is offline
 
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Location: Olathe, KS
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Hello Andy,

We appreciate that everyone has to decide what is important to them, but we want to make sure that you realize that we have a new rack that makes it easy to mount the GMC 507 (or GMC 307) in the radio stack in case that is an option for you in that big RV-6 panel. Once the rack is installed, the two pawl latches make it simple to install/remove the GMC 307/507.

We also encourage you to think about the ergonomics of using your autopilot. There is simply no better autopilot user interface than the G5 with GMC 507. Autopilot lateral and vertical modes, and even a flight director that is usable both with and without the autopilot engaged, are conveniently displayed on the G5.



To review the operation of this autopilot, let's fly to Oshkosh and see how simple and efficient it is to operate the G5 based autopilot with the GMC 507. For this flight, we will use the Aera 660 as the navigator for the autopilot.

Before departing, we put a flight plan including RIPON to FISKE arrival into the Aera 660.



Next, we will setup VNAV to automatically descend the aircraft to 1,800 ft MSL by 3 nm before RIPON for the published VFR arrival.



One last step is to enter our enroute cruise altitude into the G5. We use the ALT SEL knob on the GMC 507 to do this since it is tightly integrated with the G5. The works all done, so let's depart and enjoy the many features of this easy to use autopilot.

After taking off, we turn the plane on course as shown on the HSI and establish our climb. At this point we simply push the AP button to engage the autopilot in ROL (lateral) and PIT (vertical) modes, and let go of the stick. Nothing moves as we smoothly continue our climb straight ahead with the autopilot engaged.

The autopilot automatically arms to capture the selected altitude (9500').

Next, push the NAV button on the GMC 507 to couple the autopilot laterally to the flight plan in the Aera 660.

While using pitch mode in the climb, you can use the large, convenient pitch wheel to change pitch. Roll the wheel forward to lower the nose and roll the wheel down to raise the nose. All of the large buttons, knobs, and wheel on the GMC 507 are easy to use, even with light gloves.



There are many autopilot options to use in the climb. If you want to switch from pitch mode to vertical speed mode, just push the VS button. The autopilot will capture the current vertical speed, then you use the pitch wheel to increase or decrease the vertical speed and the vertical speed in use is "bugged" on the G5 and displayed numerically in the autopilot status bar on the G5.

As you climb in altitude and airspeed drops as you maintain selected pitch or vertical speed, you can press one button (IAS) to switch to airspeed hold mode to protect your airspeed in the climb. Selected airspeed is "bugged" on the airspeed tape on the G5, and also changed with the pitch wheel on the GMC 507.

Let's say you encounter some scattered clouds in the climb and want to deviate around them and return to the course line. Just push the HDG/TRK knob to sync selected HDG/TRK to current HDG/TRK, then push the TRK (or HDG) button and use the HDG/TRK knob to steer the aircraft around the clouds. When you are clear, just push the NAV button to automatically return to the course line.

Alternatively, you can push the AP button to disengage the the autopilot while leaving the flight director setup in the selected lateral and vertical modes, hand fly the aircraft around the clouds, then simply press one button (AP) to re-engage the autopilot and return to flying the previous lateral/vertical modes.

Once you reach the 9500' selected altitude, the autopilot will automatically capture this altitude and enter altitude hold mode.

Once you are established in level cruise, you can arm for VNAV capture. Again, just push one button (VNAV) and you are all set to automatically descend at your selected descent rate to the 1800' altitude required at RIPON. You can even select the "Time To VNAV" field as one of the 8 continuously displayed fields on the Aera 660 as a reminder how much longer you will remain at cruise altitude before beginning the descent.

I could go on longer, but you get the idea. Let us know if you have questions.

Thanks,
Steve
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Last edited by g3xpert : 02-13-2018 at 07:10 AM.
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  #5  
Old 02-12-2018, 11:03 PM
control control is offline
 
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Ill take this opportunity to ask a question about the G5/507 AP.

When returning to NAV after having deviated with HDG/TRK, how does it return:
30 degree intercept to the original line, direct towards the next waypoint or something else, configurable???
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  #6  
Old 02-13-2018, 07:07 AM
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g3xpert g3xpert is offline
 
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Quote:
Originally Posted by control View Post
Ill take this opportunity to ask a question about the G5/507 AP.

When returning to NAV after having deviated with HDG/TRK, how does it return:
30 degree intercept to the original line, direct towards the next waypoint or something else, configurable???
Hello Control,

Page 67 of the Rev. G G5 Pilot's Guide explains use of the NAV lateral mode and provides this information on active flight plan leg intercepts:
When intercepting a flight plan leg, the flight director gives commands
to capture the active leg at approximately a 45 angle.
Thanks,
Steve
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Please email us for support instead of using Private Messaging due to the limitations of the latter.
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  #7  
Old 02-13-2018, 07:08 AM
AndyWW AndyWW is offline
 
Join Date: Jan 2015
Location: Englefield Green UK
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The problem I have with the Garmin control heads is that it would require major panel surgery to put in a rectangular box, whereas the round ones can easily fit a redundant spot. If Garmin has any plans for a round autopilot control head they would have a new customer for sure!
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  #8  
Old 02-13-2018, 07:25 AM
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g3xpert g3xpert is offline
 
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Quote:
Originally Posted by AndyWW View Post
The problem I have with the Garmin control heads is that it would require major panel surgery to put in a rectangular box, whereas the round ones can easily fit a redundant spot. If Garmin has any plans for a round autopilot control head they would have a new customer for sure!
Hello Andy,

Yes, we understood this from your original posting, but I must have failed in communicating the advantages of having large, dedicated, easy to access and use controls for all autopilot functions.

If we want our planes to have a great user interface for an autopilot, perhaps we need to allocate more, and possibly a different space in our panels, besides the round holes.

Putting the user interface provided by the GMC 507 into a 3.125" round hole would result in very small buttons and knobs, and perhaps no pitch wheel at all, probably resulting in a poor user experience.

Thanks,
Steve
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Please email us for support instead of using Private Messaging due to the limitations of the latter.

Last edited by g3xpert : 02-13-2018 at 08:12 AM.
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  #9  
Old 02-13-2018, 07:45 PM
jakej jakej is offline
 
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Location: Adelaide, Australia
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Steve, Is the G5 nmea output suitable for all the common autopilots ?
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  #10  
Old 02-14-2018, 06:59 AM
AndyWW AndyWW is offline
 
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Location: Englefield Green UK
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And assuming the answer to Jake's question above is yes, what is the refresh frequency for the GPS position data that the G5 outputs?
Thanks very much.
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