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  #1  
Old 01-23-2010, 04:17 PM
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flickroll flickroll is offline
 
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Location: Charlottesville, VA
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Default GRT YouTube Video

Don't want to start a negative thread on GRT (I've heard nothing but good things about them and their products). But the attached YouTube video has caught my eye since I'm considering a dual GRT setup in my -8 Does anyone know anything about this particular issue, and if it was able to be resolved? Thanks

http://www.youtube.com/watch?v=TgzoyoRER-Q
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Jim Shannon
RV-8 N52VV
Charlottesville, VA

AFS 4500 EFIS & 3400 EFIS/EM
G430W - SL30 - G327 - G696 - G240
TT DigiFlight II VSVG w/pitch autotrim
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  #2  
Old 01-23-2010, 04:26 PM
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Capflyer Capflyer is offline
 
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Default

I'm on my second GRT EFIS and have not had any problems. If installed correctly very few ever do and if there is a problem, the good folks at GRT are quick to fix it. You should have no concerns about going with GRT. It is the best system out there, hence my reason for doing it a second time.
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Mike
Based in the DC SFRA where the Forces of Darkness gaze upon our every move
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Current Project - RV8 Hot Rod
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  #3  
Old 01-23-2010, 04:59 PM
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flickroll flickroll is offline
 
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I would not have even posted this but the YouTube poster indicated that he was not happy with the service that he received from GRT while trying to resolve this. But based on all that I have read about GRT is that they provide excellent customer support.
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Jim Shannon
RV-8 N52VV
Charlottesville, VA

AFS 4500 EFIS & 3400 EFIS/EM
G430W - SL30 - G327 - G696 - G240
TT DigiFlight II VSVG w/pitch autotrim
VP-X Pro
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  #4  
Old 01-24-2010, 06:26 AM
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Sticky1 Sticky1 is offline
 
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Hummmm, I have been flying the GRT for over a year without any problems. Installation is Key.
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  #5  
Old 01-24-2010, 06:27 AM
dav1111 dav1111 is offline
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Location: Lubbock, Texas
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Default GRT Customer Service

I have had five different GRT displays hooked up to two different AHRS units since my initial build (due to upgrading) and have never had any problems as indicated by the video. My first question would be has both the display and AHRS been sent back to GRT for testing. That would be the starting point. If GRT could not duplicate the problem then it is obviously an install issue, and if the builder can't figure it out locally with telephone support I suggest a flight up to GRT as they will be more than glad to look at his install and see what the problem is or is not.

GRT has the best customer service of any company in the world.

Quote:
Originally Posted by flickroll View Post
I would not have even posted this but the YouTube poster indicated that he was not happy with the service that he received from GRT while trying to resolve this. But based on all that I have read about GRT is that they provide excellent customer support.
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Russ Daves
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  #6  
Old 01-24-2010, 06:56 AM
rv72004 rv72004 is offline
 
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Every product has a odd one out. And not every customer will always be satisfied.
On average I have just read good about GRT. Have one myself and support has been fine.
Just my 2c , but i really wouldnt worry .
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  #7  
Old 01-24-2010, 07:10 AM
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Thanks for the feedback guys. What all of you are saying has been my gut feel....most likely either an installation issue or an oddball hardware issue. Glad to hear all of the reports of great GRT customer service....makes the decision pretty easy.
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Jim Shannon
RV-8 N52VV
Charlottesville, VA

AFS 4500 EFIS & 3400 EFIS/EM
G430W - SL30 - G327 - G696 - G240
TT DigiFlight II VSVG w/pitch autotrim
VP-X Pro
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  #8  
Old 01-24-2010, 08:16 AM
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MSFT-1 MSFT-1 is offline
 
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Default I fought with this problem in my RV-10

I have a dual screen GRT Horizon I setup (enhanced screens, standard processor). My problem was that the two screens would split (they would disagree on magnetic heading and roll attitude). Typically one would say I was in a 10 degree left bank and the other that I was in a 10 degree right bank. By looking out the window I could tell that the "real" roll attitude was about in the middle.

Usually turbulence or a turn would cause the split. After 30 seconds to a minute the screens would "unite" again. I tried lots of things including moving the magnetometers (to the wing tips), looking for interference issues, replacing the magnetometers etc.

I wish I could say I have the problem completely resolved, but I don't. It still occasionally occurs. Because they are never very far off from the correct heading and attitude, I don't feel unsafe.

Now, for the good news. GRT has been incredibly helpful. I spent endless hours on the phone with Carlos/Mark/Greg. They even visited my airplane at Sun n Fun last year to "take a look". Greg (co-owner of the company) even gave me his personal cell phone number to discuss the problem.

GRT is a great company to work with. They stand behind their products. I would definitely buy their products again.
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Bruce
Richmond, VA (KFCI)
RV-10 (520+ hours since first flight in Nov 07)
RV-8 (500 hours, sold Sept 07)
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  #9  
Old 01-24-2010, 08:35 AM
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flickroll flickroll is offline
 
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Bruce, sorry to hear you're still not at 100% with your GRT's. What is GRT saying about this? In other words, have they arrived at 'live with it', or are they still helping to troubleshoot? Did they swap out hardware while you were troubleshooting, or focus more on installation issues? I would hate to be IMC and have 2 AI's not agree. And equally or more importantly, not trusting the displays' ability to provide good data.

I have heard of one more GRT user having this problem (in addition to you and the YouTube guy). I'm trying to make contact with that individual to get more info. Since GRT has to be aware of this issue with the others, I'm curious what there response has been...'we've never seen that one!', or 'yeah we've heard of a few of these and are trying to figure it out'.
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Jim Shannon
RV-8 N52VV
Charlottesville, VA

AFS 4500 EFIS & 3400 EFIS/EM
G430W - SL30 - G327 - G696 - G240
TT DigiFlight II VSVG w/pitch autotrim
VP-X Pro
Reply With Quote
  #10  
Old 01-24-2010, 08:52 AM
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MSFT-1 MSFT-1 is offline
 
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Default I am very happy with my GRTs

If you want to discuss the details, I will happily give you a ring. PM me with a phone number.
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Bruce
Richmond, VA (KFCI)
RV-10 (520+ hours since first flight in Nov 07)
RV-8 (500 hours, sold Sept 07)
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