colopilot wrote:

lefoy84 wrote:Dual G5s in my 180. Only problem was the failure of both backup batteries. Replaced under warranty.

That's interesting. Mine is newly installed and both batteries seem to be dead as well. Time for a call.

Re: GMU11, mine has it. It's a couple wires and finding it a good home, didn't take us long at all to do. I can't speak to life without it but I don't think the install was anything remarkably expensive or difficult.

My issue was that you had to run wires out to the wing or tail, make a mounting bracket then go through the calibration processes which looked to be a few hour ordeal. I'm all about more capability, but it just seemed like a lot of minimal benefit.

hamer wrote:My issue was that you had to run wires out to the wing or tail, make a mounting bracket then go through the calibration processes which looked to be a few hour ordeal. I'm all about more capability, but it just seemed like a lot of minimal benefit.

True. I suppose I should clarify, I had the airplane apart at that point so running wires was just pulling them through exposed holes. It's definitely a good project to take on when you're already doing other work in there. I think the calibration went quickly for me but I can't say exactly how long. I also shielded everything when I rewired knowing this would go in somewhere, just to avoid EMI-related days of work (which did happen to someone else out here).

hamer wrote:

colopilot wrote:

lefoy84 wrote:Dual G5s in my 180. Only problem was the failure of both backup batteries. Replaced under warranty.

That's interesting. Mine is newly installed and both batteries seem to be dead as well. Time for a call.

Re: GMU11, mine has it. It's a couple wires and finding it a good home, didn't take us long at all to do. I can't speak to life without it but I don't think the install was anything remarkably expensive or difficult.

My issue was that you had to run wires out to the wing or tail, make a mounting bracket then go through the calibration processes which looked to be a few hour ordeal. I'm all about more capability, but it just seemed like a lot of minimal benefit.

The calibration is about 5-10 minutes. Very simple. FWIW.

Looks like the GMU 11 is probably not the answer to my problems based on the feed back here. I have call Aircraft Spruce avionics tech support and he said he would contact Garmin and get more information. I will let you know what happens...

Email [email protected] they are very helpful and responsive.

I just put dual STC'd G5s into the 206 along with a GMU 11. Next up is a GNX 375 GPS/ADS-B combo. I have the #1 set as an AI, and the #2 G5 set up as an HSI. Both of them provide heading info from the GMU 11. After we did the calibration procedure on the ground, the heading info agrees perfectly with my SIRS magnetic compass. In the air on westerly headings, there's more than a 10 degree discrepancy between the heading displayed on the G5s and on the SIRS.

When we swung the SIRS on installation years ago, the deviation was so slight (+/- 1 degree) that it was within the margin of error from the procedure for swinging the compass to begin with. Now I'm wondering if something has happened to the SIRS, or if there's something wrong with the GMU 11.

I'm going to go try aligning on some different runways with headings around the compass rose and running up the engine on the ground to see whether it's the SIRS, the GMU 11, or both. I'm going to keep a little notebook handy so I can log the discrepancies in the air, too.

Edit: I test flew some different runways and headings yesterday. The G5s are dead on. The S.I.R.S. is off on westerly headings. Something must have changed from the initial installation, or the margin of error on swinging the compass originally was so great that we didn't notice the deviation on the westerly headings. Gonna redo that now.

FWIW.

Anybody know if the experimental version can get its GOS data from a 796? Thinking about going that route...

A1Skinner wrote:Anybody know if the experimental version can get its GOS data from a 796? Thinking about going that route...

From what I can tell, yes. If you look at page 131 of the Garmin G5 installation manual, it shows the formats it can receive, NEMA is one of them.

If you then go to page 192 of the 796 pilots guide you'll see that it tells you to set it to "Aviation In/NMEA & VHF Out."

These are the same settings I used for my G5 and Aera 660 and GTR200. The G5 & GTR200 both RX on the same portable TX line.

You can confirm this with [email protected], they might even have a diagram you can use.

G5 Installation Manual

796 Pilot's Guide

hamer wrote:

A1Skinner wrote:Anybody know if the experimental version can get its GOS data from a 796? Thinking about going that route...

From what I can tell, yes. If you look at page 131 of the Garmin G5 installation manual, it shows the formats it can receive, NEMA is one of them.

If you then go to page 192 of the 796 pilots guide you'll see that it tells you to set it to "Aviation In/NMEA & VHF Out."

These are the same settings I used for my G5 and Aera 660 and GTR200. The G5 & GTR200 both RX on the same portable TX line.

You can confirm this with [email protected], they might even have a diagram you can use.

G5 Installation Manual

796 Pilot's Guide

Awesome. Thanks.

Saw this 185 on Barnstormers and it seems like they took a fair number of liberties on replacing primary instruments with the G5. Then again, it does show Airspeed, Alt, T&B, Heading, and VSI on one screen...



https://barnstormers.com/ad_detail.php? ... atid=19185

asa wrote:Saw this 185 on Barnstormers and it seems like they took a fair number of liberties on replacing primary instruments with the G5. Then again, it does show Airspeed, Alt, T&B, Heading, and VSI on one screen...



https://barnstormers.com/ad_detail.php? ... atid=19185

Wow. That's crazy. It's only certified to replace the artificial horizon. Wonder if they got a field approval?? I was really tempted to do something similar with my 206 but it will never fly here in Canada...

With the addition of two G5s, we're removing the vacuum system, DG and artificial horizon, but I see no reason to remove the ASI, turn coordinator, altimeter and VSI. The G5 needs pitot static input anyway. You just tee off of the existing lines from the pitot static system to the G5s. It's not like those pitot static instruments go bad.

Can anyone speak to the Garmin g5 experimental from SPRUCE coming with the $50 installation kit when you buy it with their 4' Wiring harness package? Under the questions for both products the site says it does but when I called and talked to the avionics specialist he said he "didn't think it did comes with the install kit"
Was just wondering if anyone on here has ordered the product from Spruce and can confirm. Its going in a CC sport cub btw.

Thanks in advance!
Robby

RobbyMc wrote:Can anyone speak to the Garmin g5 experimental from SPRUCE coming with the $50 installation kit when you buy it with their 4' Wiring harness package? Under the questions for both products the site says it does but when I called and talked to the avionics specialist he said he "didn't think it did comes with the install kit"
Was just wondering if anyone on here has ordered the product from Spruce and can confirm. Its going in a CC sport cub btw.

Thanks in advance!
Robby

Not sure why you would want to buy the harness. If you are just doing the G5 by itself it's only 2 wires...

Good point.

The G5 was the first time I DID order the harness.... I will never do it any other way. Comes with the garmin installation kit, which does not come with the G5. It really saves at least a day of building up the harness on your bench, and running around finding the right sized wires etc. although, not a massive deal with just 2 or 3 wires, but if you order a garmin radio or something, i'll save a lot of time

Tangogawd wrote:The G5 was the first time I DID order the harness.... I will never do it any other way. Comes with the garmin installation kit, which does not come with the G5. It really saves at least a day of building up the harness on your bench, and running around finding the right sized wires etc. although, not a massive deal with just 2 or 3 wires, but if you order a garmin radio or something, i'll save a lot of time

What is the garmin installation kit? I've only ever ordered without the harness so I'm curious what the kit includes. I've only ever done the certified installs with the GMU11 or the antenna and always just made the harness, but I have the wires in stock so it sure doesn't take long...

Tangogawd wrote:The G5 was the first time I DID order the harness.... I will never do it any other way. Comes with the garmin installation kit, which does not come with the G5. It really saves at least a day of building up the harness on your bench, and running around finding the right sized wires etc. although, not a massive deal with just 2 or 3 wires, but if you order a garmin radio or something, i'll save a lot of time

It takes you a day to crimp 9 pins?

The "install kit" is the bracket that mounts into the 3-1/8" instrument hole, that the G5 attaches to.
A harness might be worth the extra $ if you were hooking up a nav unit to drive the G5,
and were also using the G5 to drive an autopilot-
I don't know how many more wires that would involve.
Just for use as a stand-alone flight instrument, as pointed out, it's only a couple wires.
As I recall, you do need a special crimper for the pins.
I didn't have one, but my A&P buddy did.

hotrod180 wrote:The "install kit" is the bracket that mounts into the 3-1/8" instrument hole, that the G5 attaches to.
A harness might be worth the extra $ if you were hooking up a nav unit to drive the G5,
and were also using the G5 to drive an autopilot-
I don't know how many more wires that would involve.
Just for use as a stand-alone flight instrument, as pointed out, it's only a couple wires.
As I recall, you do need a special crimper for the pins.
I didn't have one, but my A&P buddy did.

The plug only has nine pins possible and the crimper costs $40 from SteinAir.
For the cost of the harness, you could buy the crimper, wire, pins and DB9 connectors to make a dozen.
Unless your job is making harnesses, the DMC crimpers are way over kill.

There are places where buying a pre-made harness are well worth the money. I just don't see a 9 pin connector as one of those cases.