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  #1  
Old 04-05-2016, 10:20 AM
chris mitchell chris mitchell is offline
 
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Default Position of static ports
I don't see the position of the static ports indicated on the plans anywhere but maybe I'm just missing it. Anybody know the answer please? Otherwise I'm guessing that about 2 inches in front of F-408, about 3-4 inches below the longeron....?

Thanks

Chris
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  #2  
Old 04-05-2016, 02:59 PM
Michael Henning Michael Henning is offline
 
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Default Check plans
It's on the plans somewhere. If I remember it is between F-408-409. I will check tomorrow when I go to hangar.
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Old 04-05-2016, 05:23 PM
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Its on the plans. I don't have them in front of me but seem to remember something like 14 inches in forward of the horizontal and a few inches below the longeron.
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Old 04-06-2016, 03:39 AM
chris mitchell chris mitchell is offline
 
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Talking Found it!!
It's not in the plans!
Apparently drawing SK-54 - I have to search it out.
18 inches in front of the HS, centred vertically on the fuselage. Steve Sampson raised the issue of the bulkhead (F-409) that is in the same approximate position. I will install mine just in front of that to aid any needed access in future.

Finally found it using the search feature- needed the right search term.

Cheers - back to the workshop.

C
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RV-8, QB, built, flown 150 hours, sold;
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RV-4 fuselage and wing kits - both at QB stage;
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  #5  
Old 04-06-2016, 09:39 AM
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AX-O AX-O is offline
 
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That is where I installed mine. I have very little position error in the system based on calibration runs.
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  #6  
Old 04-10-2016, 08:18 PM
Michael Henning Michael Henning is offline
 
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Default I went aft
My ports are just aft of F-409 and a few inches below the longeron.
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  #7  
Old 04-10-2016, 10:11 PM
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Mark Albery Mark Albery is offline
 
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Just as important as position is to use the domed rivet heads that Van's recommend.

I had flush ports on my current RV-4 when I bought it and the airspeed read 5-8 knots low. After I put the domed heads over the port it dropped the static pressure just enough for it to read correctly.
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  #8  
Old 04-11-2016, 12:33 AM
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Larco Larco is offline
 
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If I remember correctly the position is shown on a small paper that is in the static port rivet kit. Larry
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  #9  
Old 04-11-2016, 09:23 AM
bill v bill v is offline
 
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Default mark albery
how did you put the domed head on? I need to do the same or keep living with the same errror
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Old 04-11-2016, 09:30 AM
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Mark Albery Mark Albery is offline
 
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Bill,

I actually glued the domed head over the flush port using a drill bit to keep it centred and stop glue going into the port. Taped it over, removed the drill bit and it's still working fine years later.

Cutting the heads off of the rivets was the tricky bit.
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