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Old 02-24-2014, 12:21 PM
Mike S's Avatar
Mike S Mike S is offline
Senior Curmudgeon
Join Date: Sep 2005
Location: Dayton Airpark, NV A34
Posts: 16,106

Manny, he is setting the wing sweep alignment. Done prior to drilling the hole for the rear spar attachment.
Mike Starkey
VAF 909

Rv-10, N210LM.

Flying as of 12/4/2010

Phase 1 done, 2/4/2011

Sold after 240+ wonderful hours of flight.

"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."

Last edited by Mike S : 02-24-2014 at 01:13 PM.
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Old 02-24-2014, 12:46 PM
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MarkW MarkW is offline
Join Date: Sep 2011
Location: Edgewater, FL. X50
Posts: 1,177

If you drop one from the inboard and outboard of each wing you will have four that should line up. Nothing to reference on the fuse.
RV9 - N14MW - Flying
G3X - ECI Titan I0-320
Catto three blade prop
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Old 02-24-2014, 01:35 PM
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KRviator KRviator is offline
Join Date: Oct 2009
Location: Sydney, Aust.
Posts: 849

The idea is to have the 4 plumb bobs in line, one at each tip and each root, and also to measure from a rivet of your choice on the wingtip to a reference point of your choice on the tail.

When the measurements are the same, left and right, and the 4 plumb bobs are in line, your leading edge is as square to th fuselage as its going to get.

If you do not measure the distance from the tail, you may have a perfectly inline leading edge that is not square to the fuselage. In my case, I used a wingtip rivet, and the join line for the HS, that gave a measurement of around 5,115 mm. So, if I had one side that was 5110 and the other 5120, add them up and divide by two to find the "ideal" measurement and adjust the sweep to get it.

There is no hard and fast rule as to what your reference points must be, just make sure you use the same point on each wingtip.
Once you have tasted flight you will forever walk the earth with your eyes turned skywards, for there you have been and there you will long to return - Leonardo DaVinci

My Flickr gallery:

RV-9A - Finished on 10th February 2016 after 4 years, 9 months and 19 days! The 1020th RV-9 flying.

First flight 26th March 2016. Essential specs 145KTAS @ 2400RPM, 8000', 24.2LPH, Initial RoC 1800FPM.
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Old 03-24-2014, 09:23 PM
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Dbro172 Dbro172 is offline
Join Date: Apr 2012
Location: West Fargo, ND
Posts: 1,076
Default 2 years Down!

After this windscreen fairing i'm about out of things to do in the garage. Substantial completions in the last year include: Slider Canopy, Cowling, Avionics, Engine and Firewall Forward. The only thing i'd hate to over again was the cowling and FAB .... hundreds of iteration of on-again-off-again. The most rewarding and was the avionics wiring (big help from Jenny at Stein) but this was the most fulfilling work for me. We've had two awesome kids in the process and the wife still has her parking spot

Nomex suits and their ready
Derek Hoeschen
EAA Tech Counselor
RV-9A #92103 - N803DK
G3X, Superior XO-320, Dual Pmags, Catto 3B

1974 Bellanca Super Viking - N16AW - Flying
RV-8 #83565 - N184DK - building
1968 Mooney M20C - N6801N - Sold
1956 C-182 - N744W - Sold
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Old 03-24-2014, 09:34 PM
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propsync propsync is offline
Join Date: Apr 2012
Location: Tampa, FL
Posts: 310

Lookin' good.
Tom B
Tampa, FL
EAA - Tampa Exec Airport
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Old 03-25-2014, 12:12 PM
DeltaFox DeltaFox is offline
Join Date: May 2009
Location: chesapeake, va
Posts: 97
Default re:2 years Down!

Looking great Derek! Very nice work.

RV-9A Airworthiness certificate Oct 2017,
first flight 11/18/17, testing completed Mar 2018.
Now free to move about the country.

2020 Dues Paid
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Old 04-07-2014, 09:35 PM
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bruceh bruceh is offline
Join Date: Mar 2008
Location: Ramona, CA
Posts: 2,511
Default Status is Done. Ready to fly!

Obligatory photo of the finished RV-9A.

Airworthiness inspection completed 4/6/14.

First flight to come soon...
Bruce Hill
RV-9A N5771H flown over 900 hours!
APRS Tracking for KJ6YRP and Flying Over the Hills Blog
2021 VAF donator
EAA Tech Counselor, Pre Buys, Build assistance - canopy/tanks/fiberglass/electrical/repairs
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Old 04-07-2014, 10:07 PM
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propsync propsync is offline
Join Date: Apr 2012
Location: Tampa, FL
Posts: 310

Don't get any bugs on it.
Tom B
Tampa, FL
EAA - Tampa Exec Airport
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Old 04-08-2014, 05:43 PM
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flightlogic flightlogic is offline
Join Date: Nov 2013
Location: Prescott, AZ
Posts: 1,674

Epsound:just a thought. Look at GRT mini efis as a budget primary.
Designed for backup, but might work for you.
I have one on order to go left center in my 9. Synthetic vision is too cluttered.
Look out the window!
"Kindness is never a bad plan."

exemption option waived. Donation appropriate.
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Old 07-26-2014, 01:21 PM
whd721 whd721 is offline
Join Date: Oct 2007
Location: Beaverton, OR
Posts: 233
Default Final assembly

Starting Final assembly (I Hope).
Sherwood, Oregon
As Bill Stout (designer of the Ford Trimotor) used to say, ?Simplicate and add Lightness?

Last edited by whd721 : 07-26-2014 at 03:01 PM. Reason: missing photo
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