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Static port locations... again

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john.marzulli(at)gmail.co
Guest

Posted: Fri Dec 24, 2010 11:23 am Post subject: Static port locations... again

I know a few people have installed duel static ports behind the doors with good success.



Has anyone with the duel static installation also used the Zenith suggested method of leaving the instrument open?



Roger at Zenith was very insistent that they got very accurate results by just leaving the port open.

 

Any thoughts?

Thanks,

John Marzulli



http://MarzulliPhoto.net/

http://701Builder.blogspot.com/

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cscsail(at)gmavt.net
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Posted: Fri Dec 24, 2010 12:48 pm Post subject: Static port locations... again

John,

     I followed the Zenith  recommendation and left the the instrument static port open behind the panel. I  have a analog ASI and another in the Denon display. They both read exactly (as  far as I can tell) the same airspeed. But the indicated airspeed from the  instruments is about 8 mph above the actual speed when compared to my  GPS. 

 I've gotten used to it and it's not an  issue.

 Happy Holidays,

 Gordon    

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John Bolding

Joined: 23 May 2006
Posts: 281

Posted: Fri Dec 24, 2010 1:10 pm Post subject: Static port locations... again

Maybe that's why Zenith likes open ports instead of  real static ports,  makes their airplanes go faster........  naaah   that couldn't be it.

  

 LO&SLO   (but actual  speed)

  

 John

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dwilde(at)clearwire.net
Guest

Posted: Fri Dec 24, 2010 3:16 pm Post subject: Static port locations... again

I have left the ASI port open and compared to the GPS it shows about     3mph fast.  I have gotten used to it so it is not a problem.

     

     DW

     

     On 12/24/2010 11:20 AM, John Marzulli wrote:     [quote]I know a few people have installed duel static ports       behind the doors with good success.

       

       Has anyone with the duel static installation also used the Zenith       suggested method of leaving the instrument open?

       

       Roger at Zenith was very insistent that they got very accurate       results by just leaving the port open.

       

       Any thoughts?

       

       

       Thanks,

              John Marzulli

       

       http://MarzulliPhoto.net/

       http://701Builder.blogspot.com/

        	  Quote: 	
		  [b]



	
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rockiedog2

Joined: 03 Mar 2010
Posts: 19

Posted: Sat Dec 25, 2010 5:24 am Post subject: Static port locations... again

Mine has the static port  open behind the panel. At cruise it does 93-94 TAS down low and indicates 97 for  a 3-4 mph error there. At approach speeds of 50 down to 35 mph IAS  it's  dead on, below 35 the error gets pretty big...at stall of 30 mph TAS/1000  MSL it indicates 22. An 8 mph error at 30 MPH. Bending the pitot tube down  might help both the error at cruise and the error at low speed. I believe I'll  try it

 Merry Christmas  

 Joe

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