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01-20-2020, 04:11 PM
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Join Date: Nov 2015
Location: Osage, IA
Posts: 142
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Static port drilled in fuse wrong bulkhead Argh!!
After studying the drawing 28 (RV7) numerous times to determine the exact location to drill in fuse skin, I ended up measuring and drilling referencing the wrong fuse bulkhead. So, I call Van?s this morning and they say no big deal. Can?t tell me if it will affect the static system or not. In other words I won?t know if I get wrong input from static port until flying. My static port will be approximately 2 feet forward of where Van?s calls out the proper hole location.
Has anyone out there done this and have any ill effects with the static system?
I can drill new holes in correct location and ?fill in? the wrong 1/4? hole now or just roll the dice and hope all works well.
Lots of aircraft I?ve flown have a more forward static port, but Van?s must?ve put it that far aft for a reason. Open to all opinions.
Dave
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RV7 QB started 1/17
Working on FWF
2020 dues sent
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01-20-2020, 04:17 PM
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Join Date: Oct 2005
Location: Estes Park, CO
Posts: 3,947
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static port
You have one each side so did you drill both or just one?
I would fill and redrill in the correct location. My opinion. 
__________________
Larry Larson
Estes Park, CO
http://wirejockrv7a.blogspot.com
wirejock at yahoo dot com
Donated 12/03/2019, plus a little extra.
RV-7A #73391, N511RV reserved (2,000+ hours)
HS SB, empennage, tanks, wings, fuse, working finishing kit
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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01-20-2020, 04:25 PM
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Join Date: Nov 2015
Location: Osage, IA
Posts: 142
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Both
Oh no. I was on a roll and drilled both holes.
Dave
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RV7 QB started 1/17
Working on FWF
2020 dues sent
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01-20-2020, 04:30 PM
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Join Date: Jun 2005
Location: Georgetown, TX
Posts: 331
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Just my opinion -- patch it, put the static port in the location as per the plans.
Don't wig-out about the patch; just debur both sides of the hole, slather a little JB Weld on a small piece of scrap aluminum (1/2" square or thereabouts) and glue it to the back side of the fuse skin, scrape off the excess that oozes out, then sand flat when dry.
__________________
Brian Decker
Retired Firmware Guy and Airplane Builder
2020 RV-14 QB -- Under construction - Tailcone & Empennage Complete.
2018 RV-7 QB -- Built, Flying
2007 RV-7 QB -- Built, Drowned, Resurrected and flying
1998 RV-8 QB -- Started, Sold
1986 Mooney 205SE
1980 Mooney 231
Aided and abetted building a number of other RV's.
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01-20-2020, 04:30 PM
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Join Date: Jan 2011
Location: Williamsport, Pa
Posts: 175
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Dave, I hesitate to admit, but I did exactly as you did a few years back. Absolutely no adverse affect on airspeed pitot/static.
Jim @lock Haven, Pa
7A
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01-20-2020, 04:31 PM
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Join Date: Feb 2008
Location: Calgary, Alberta
Posts: 1,005
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Static port has been depicted in both locations over the years & different plans sets. Static error is one of the things you validate in the Flight Test process.
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Ralph
built a few RVs, rebuilt a few more, hot rodded some, & maintained/updated a bunch more
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01-20-2020, 04:37 PM
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Join Date: Mar 2014
Location: Laguna Hills, CA
Posts: 1,805
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Quote:
Originally Posted by bjdecker
Just my opinion -- patch it, put the static port in the location as per the plans.
Don't wig-out about the patch; just debur both sides of the hole, slather a little JB Weld on a small piece of scrap aluminum (1/2" square or thereabouts) and glue it to the back side of the fuse skin, scrape off the excess that oozes out, then sand flat when dry.
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Or dimple it and set a nice flush rivet in there!
__________________
Doug
RV-9A "slider"
Flew to Osh in 2017, 2018 & 2019! 
Tail number N427DK
Donation made for 2020
You haven't seen a tree until you've seen its shadow from the sky -- Amelia Earhart
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01-20-2020, 04:44 PM
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Join Date: Nov 2015
Location: Osage, IA
Posts: 142
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Already drilled to full size. 1/4?
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RV7 QB started 1/17
Working on FWF
2020 dues sent
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01-20-2020, 04:50 PM
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Join Date: Jun 2010
Location: Sunman, IN
Posts: 2,189
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Or
Or use two nested tinnerman countersunk washers with a #6 screw. Never see it and it closes the hole perfectly...
__________________
Bob
Aerospace Engineer '88
RV-10
Structure - 90% Done
Cabin Top - Aaarrghhh...
EFII System 32 - Done
297 HP Barrett Hung
ShowPlanes Cowl with Skybolts Fitted - Beautiful
Wiring...
Dues+ Paid 2019,...Thanks DR+
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01-20-2020, 05:35 PM
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Join Date: Jan 2005
Posts: 4,285
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Quote:
Originally Posted by Davea320
Already drilled to full size. 1/4”
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Install static Ports and move on.... it will make little to no difference. Not even Van can make their mind up.
http://www.vansairforce.com/communit...ad.php?t=97509
Keep in mind there is NO PERFECT PLACE FOR A STATIC PORT. THE BEST PLACE IS ABOUT 100 FEET BEHIND THE RUDDER..... Seriously.
https://www.youtube.com/watch?v=kZsi4A5PcTw
Airflow around the skin of the airplane, corkscrew air from prop SUCKS everywhere around the fuselage.... It is all a compromise. Cessna puts the static port on one side behind the firewall, terrible place and single port. However good enough for a certified GA plane.
Having both ports at the the same station is good. It will cancel out the error from slip and skid. As long as you are aft of the wing trailing edge you are good. Piper use to put the static port on the pitot (blade shape combo pitot and static).
When you do your test flying you will test indicated verses actual AS. You will fly GPS ground speed (triangle hdgs 120 apart) and average it out GPS and compare to IAS. You will be within a few MPH of indicated. It never will be perfect. If you are worried do like the video and get a good static source and compare to your static source.
__________________
George
Raleigh, NC Area
RV-4, RV-7, ATP, CFII, MEI, 737/757/767
2020 Dues Paid
Last edited by gmcjetpilot : 01-20-2020 at 05:38 PM.
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