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FlyingMonkey

iFly 740b Install

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On 3/29/2018 at 7:34 PM, FlyingMonkey said:

Yes, uAvionix EchoUAT.

 

That looks like the best bang for the buck, after reviewing several of the available options. Did you get the package with th EchoUAT and the SkyFYX WAAS GPS?

 

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10 hours ago, Ben2k9 said:

That looks like the best bang for the buck, after reviewing several of the available options. Did you get the package with th EchoUAT and the SkyFYX WAAS GPS?

 

I have not purchased anything yet, but that is my plan, the EchoUAT+SkyFYX-EXT.

 

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1 hour ago, FlyingMonkey said:

I have not purchased anything yet, but that is my plan, the EchoUAT+SkyFYX-EXT.

 

Alright bear with me here...still trying to understand the nuances of what I need. Why the EXT versus the SkyFYX GPS?  Is there no existing antenna that can be used?

 

 

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3 hours ago, FlyingMonkey said:

I have not purchased anything yet, but that is my plan, the EchoUAT+SkyFYX-EXT.

 

Also...what does the SkyFYX GPS do that the internal GPS with the iFly740 doesn’t do?

thanks for the help

 

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2 hours ago, Ben2k9 said:

Alright bear with me here...still trying to understand the nuances of what I need. Why the EXT versus the SkyFYX GPS?  Is there no existing antenna that can be used?

 

 

The EchoUAT is the dual band ADS-B transceiver, and the SkyFYX is the WAAS GPS with
"equivalent performance" to a TSO'd unit.  The GPS needs some form of antenna, and uAvionix has two options, one of which is the weather-resistant external (EXT) antenna.  I'm choosing that over the other antenna because if reception is poor with that antenna on my glareshield, I can relocate it to the top of the airplane without buying another antenna.

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On 4/2/2018 at 10:48 AM, FlyingMonkey said:

The EchoUAT is the dual band ADS-B transceiver, and the SkyFYX is the WAAS GPS with
"equivalent performance" to a TSO'd unit.  The GPS needs some form of antenna, and uAvionix has two options, one of which is the weather-resistant external (EXT) antenna.  I'm choosing that over the other antenna because if reception is poor with that antenna on my glareshield, I can relocate it to the top of the airplane without buying another antenna.

Would one need an AHRS to power the SynVis?  I saw that iFly was releasing that update today. 

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57 minutes ago, Ben2k9 said:

Would one need an AHRS to power the SynVis?  I saw that iFly was releasing that update today. 

No, it will work without it.  According to iFly, it will have some limited bank and pitch info without AHARS, based on GPS info.  but it won't be precise or guaranteed to be correct.

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The iFly AHRS will not work without an AHRS module feeding it the correct bank and pitch information.  I know what Walter posted, but this is misleading.  iFly willl use GPS turn data to simulate bank, but it is not something you would want to use if in the clouds.  AHRS is being released on the next iFly release due out soon.  I suggest anyone who actually wants to use this for emergency pitch and bank information, get an AHRS device to feed it.  It works great with my Stratux which has an AHRS module.  You also get pressure altitude and closest metar setting so you can always have the correct pressure altitude instead of GPS altitude.

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1 hour ago, JohnnyBlackCT said:

The iFly AHRS will not work without an AHRS module feeding it the correct bank and pitch information.  I know what Walter posted, but this is misleading.  iFly willl use GPS turn data to simulate bank, but it is not something you would want to use if in the clouds.  AHRS is being released on the next iFly release due out soon.  I suggest anyone who actually wants to use this for emergency pitch and bank information, get an AHRS device to feed it.  It works great with my Stratux which has an AHRS module.  You also get pressure altitude and closest metar setting so you can always have the correct pressure altitude instead of GPS altitude.

As long as you intuitively understand the limitation and see the view being provided not as an indication of your altitude but rather a simple banked turn to point the screen in the same direction as flight.  The 3d depiction can be useful in low visibility in nav and awareness without aiding with attitude.

I do agree you should get the AHRS because attitude is more useful than syn vis most of the time. 

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Understanding the limitations is of no value if you have a vacuum failure in IFR and want to use the AHRS to help get to VFR weather conditions.  In VFR it's a moot point.  Flying with AHRS is certainly easier than needle, ball, and airspeed.

Why are some people so eager to hail the value of a simulated AHRS based on GPS turn information?  It can get you killed.

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1 hour ago, JohnnyBlackCT said:

Why are some people so eager to hail the value of a simulated AHRS based on GPS turn information?

Because they do not know any better.

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2 hours ago, WmInce said:

Because they do not know any better.

I have been flying with syn vis using AHRS for over 10 years now.  I know better and stand by what I said.

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12 hours ago, JohnnyBlackCT said:

The iFly AHRS will not work without an AHRS module feeding it the correct bank and pitch information.  I know what Walter posted, but this is misleading.  iFly willl use GPS turn data to simulate bank, but it is not something you would want to use if in the clouds.  

Isn't that what I said?  :)

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8 hours ago, JohnnyBlackCT said:

Understanding the limitations is of no value if you have a vacuum failure in IFR and want to use the AHRS to help get to VFR weather conditions.  In VFR it's a moot point.  Flying with AHRS is certainly easier than needle, ball, and airspeed.

Why are some people so eager to hail the value of a simulated AHRS based on GPS turn information?  It can get you killed.

Vacuum failure...sounds dangerous, you should not be trying to clean out your airplane while flying IFR.  That's why I keep my vacuum on the ground.  ;)

I don't think anybody ever said simulated AHRS should be trusted as critical flight instrumentation.  But it is another tool in the toolkit that can be used safely in conjunction with other instruments.  I don't think any of us on this forum fly airplanes whose only attitude information is simulated off a portable GPS.  I have used the SynVis in Garmin Pilot without an AHRS and gotten useful information from it.  I don't need an AHRS with it because I have an AHRS in my Dynon EFIS.

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To each his own.  IMHO, the only reason for AHRS is to fly the airplane in instrument conditions.  It is of no use in VFR other than something to look at when you should be looking out the window.  The iFly AHRS can be a great emergency tool if you have an instrument failure while in instrument conditions, but only if it is being fed by an AHRS module.

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5 minutes ago, JohnnyBlackCT said:

the only reason for AHRS is to fly the airplane in instrument conditions.  It is of no use in VFR other than something to look at when you should be looking out the window.

AHRS feeds syn vision and attitude displays and both are very useful 'in VFR'.  The confirming red color for instance tells you you don't have the terrain cleared and that might be hard to judge visually at times.  Low light conditions and views obscured by clouds become mystery solved.  I was in Sierra mountain wave today and using my pitch attitude number continually, I could see fine but I can't pitch to the perfect attitude in wave conditions.  

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18 minutes ago, JohnnyBlackCT said:

To each his own.  IMHO, the only reason for AHRS is to fly the airplane in instrument conditions.  It is of no use in VFR other than something to look at when you should be looking out the window.  The iFly AHRS can be a great emergency tool if you have an instrument failure while in instrument conditions, but only if it is being fed by an AHRS module.

I don't disagree about AHRS and what it's good for in VFR airplanes. 

The SynVis does have some benefit though even without AHRS --  It can show terrain clearances, obstacles, and traffic (if you have ADS-B) in your direct flight path, even without the pitch & bank info provided by AHRS.     

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14 hours ago, Ed Cesnalis said:

I have been flying with syn vis using AHRS for over 10 years now.  I know better and stand by what I said.

And just what are you using the synthetic vision for, scud running? If that is the case, it is a recipe for disaster . . . ten years or not.

If you are not using it for that, then disregard.

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54 minutes ago, WmInce said:

And just what are you using the synthetic vision for, scud running? If that is the case, it is a recipe for disaster . . . ten years or not.

If you are not using it for that, then disregard.

I use the synthetic vision to further explain what I'm seeing out the window and sometimes what I'm not seeing out the window.

Do I have that terrain cleared?  Is the area around / beyond that terrain what I expect?  

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I wouldn’t rely too heavy on so called synthetic vision .... It is a height map derived out of satellite scans and thus prone to all sorts of errors with values interpolated from various sources to cover for missing spots.

You never know when you gonna hit a spot that is an interpolated patch and can be off by a few hundred feet.

 

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9 minutes ago, Warmi said:

I wouldn’t rely too heavy on so called synthetic vision .... It is a height map derived out of satellite scans and thus prone to all sorts of errors with values interpolated from various sources to cover for missing spots.

You never know when you gonna hit a spot that is an interpolated patch and can be off by a few hundred feet.

 

Over her, (spit) in California, our obstacles are big enough where a few hundred feet is okay.  Trying to miss big mountains

Lyell.jpg

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One peek out the window is worth 10,000 peeks at synthetic vision.

There is good reason why they call it synthyetic.

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2 minutes ago, WmInce said:

One peek out the window is worth 10,000 peeks at synthetic vision.

There is good reason why they call it synthetic.

We disagree completely.  Perhaps the fact that I fly through hundreds of giant obstacles that stick up to 3 miles into the air and you live in Florida has something to do with it?

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4 minutes ago, Ed Cesnalis said:

We disagree completely.  Perhaps the fact that I fly through hundreds of giant obstacles that stick up to 3 miles into the air and you live in Florida has something to do with it?

That sounds narcissistic. And stop being so condescending.

I have plenty of experience in mountain flying, unless you consider flying around Mt. Rainier, Mt. Baker and the Cascades Range otherwise.

And I don't mean at 35,000 feet.

 

 

 

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