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Dynon D10A/EDC in and RV-9A - weird behaviour

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ianxbrown

Joined: 16 May 2009
Posts: 80

Posted: Wed Jul 15, 2009 5:41 am Post subject: Dynon D10A/EDC in and RV-9A - weird behaviour

Has anyone else suffered or resolved the following issue with a Dynon

D10A EFIS with the optional EDC installed in their RV?



I get "signal too weak to calibrate" messages or something to that

effect, indicating that the voltage from the EDC is too low.  I'm sure

I'm going to have to replace the wiring, but wanted to check what others

had done.  I believe my error was in not using shielded wire, but maybe

there's a voltage drop on such a long wire run.  For those who have an

install that works, what wire did you use?  I have the EDC mounted on

the bulkhead one full space forward of the horizontal stabilizer.  I DO

see constantly updating numbers, as I'm supposed to, when I go into the

EDC calibration program.



The reason I'm asking this on this list, rather than with Dynon, is that

I'm looking for aircraft specific info, since it's quite a long wire

run.



Any other ideas or experience would be appreciated.  Thanks,



Ian Brown

Bromont

Quebec



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      1. 06:45 AM - RV10 tail kit (assembled) for sale  (Rlepre)

  

 

 

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 Subject: RV10 tail kit (assembled) for sale

 From: "Rlepre" <RLaviation(at)aol.com>

 

 

 I have an RV 10 tail kit for sale.  I can deliver.  Contact me at RLaviation(at)aol.com

 

 

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sbuc(at)hiwaay.net
Guest

Posted: Wed Jul 15, 2009 10:20 am Post subject: Dynon D10A/EDC in and RV-9A - weird behaviour

Ian wrote:

 	  Quote: 	
		   

 

 Has anyone else suffered or resolved the following issue with a Dynon

 D10A EFIS with the optional EDC installed in their RV?

 

 I get "signal too weak to calibrate" messages or something to that

 effect, indicating that the voltage from the EDC is too low.  I'm sure

 I'm going to have to replace the wiring, but wanted to check what others

 had done.  I believe my error was in not using shielded wire, but maybe

 there's a voltage drop on such a long wire run.  For those who have an

 install that works, what wire did you use?  I have the EDC mounted on

 the bulkhead one full space forward of the horizontal stabilizer.  I DO

 see constantly updating numbers, as I'm supposed to, when I go into the

 EDC calibration program.

 

 The reason I'm asking this on this list, rather than with Dynon, is that

 I'm looking for aircraft specific info, since it's quite a long wire

 run.

 

 Any other ideas or experience would be appreciated.  Thanks,

 

 Ian Brown

 Bromont

 Quebec

 


	


Ian,



Can't help with your specific problem but I can tell you that I am using 

CAT5 network cable (non-shielded) for the Dynon magnetometer under the 

tail of my RV-6. My installation has worked perfectly for several years.



Shielded cable is not necessary for proper operation of the mag. You 

might take a good look at the connectors in your harness to make sure 

there isn't a high-resistance fault in a crimp or solder connection.



Sam Buchanan

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bartrim(at)gmail.com
Guest

Posted: Wed Jul 15, 2009 10:20 am Post subject: Dynon D10A/EDC in and RV-9A - weird behaviour

Hi Ian;

     I've got the D10A/EDC in an RV9 and had no problems, but I used shielded wire as I have access to plenty of it. I would recommend that you call Dynon's tech support. They are excellent and their service is second to none. 

     Your installation is not at all uncommon and they would be able to provide you with any aircraft specific information that you require. If you are determined to try to do this with help from a list then I would recommend the Aero-Electric list as a much more specific list for this sort of problem.

     I once fried my D10 doing something really stupid that I should have known better (always use a grounded tip soldering iron) and when I called Dynon and told them what I did, they said no problem. I had to pay 1-way shipping and they fixed it free and paid the return shipping. It was out of my plane for little more than a week. That's good service.

 

 Todd

 C-FSTB

 RV9 13BTurbo

 

 On Wed, 2009-07-15 at 09:33 -0400, Ian wrote:  	  Quote: 	
		    	  Quote: 	
		  

--> RV-List message posted by: Ian <ixb(at)videotron.ca (ixb(at)videotron.ca)>



Has anyone else suffered or resolved the following issue with a Dynon

D10A EFIS with the optional EDC installed in their RV?



I get "signal too weak to calibrate" messages or something to that

effect, indicating that the voltage from the EDC is too low.  I'm sure

I'm going to have to replace the wiring, but wanted to check what others

had done.  I believe my error was in not using shielded wire, but maybe

there's a voltage drop on such a long wire run.  For those who have an

install that works, what wire did you use?  I have the EDC mounted on

the bulkhead one full space forward of the horizontal stabilizer.  I DO

see constantly updating numbers, as I'm supposed to, when I go into the

EDC calibration program.



The reason I'm asking this on this list, rather than with Dynon, is that

I'm looking for aircraft specific info, since it's quite a long wire

run.



Any other ideas or experience would be appreciated.  Thanks,



Ian Brown

Bromont

Quebec

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mike@hotlinesinc.com

Joined: 27 Aug 2009
Posts: 1

Posted: Thu Aug 27, 2009 10:12 am Post subject: Re: Dynon D10A/EDC in and RV-9A - weird behaviour

Beware of internal pitot leaks with Dynon D10A



I installed a Dynon 10A a couple years ago as a back up AI in a warbird.

A recent pitot static check uncovered a pitot leak that was pretty severe.

The leak was traced and verified as being internal to the Dynon D10A.

Disassembly of the unit revealed that the pitot connection to the solid state sensor for airspeed was loose. The static port on the sensor also came loose during disassembly.

This unit has under 10 hours of operation.

There is no way I would depend on this unit  as a primary flight instrument

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