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Old 03-15-2017, 09:23 PM
goatflieg's Avatar
goatflieg goatflieg is offline
Join Date: Jul 2013
Location: Clarkston, MI
Posts: 366
Default Flap/Aileron Trailing Edge Alignment: Good Enough?

Just did my first test fitting of my left flap on my QB wing, with the aileron in neutral position. Nailed the gap; exactly 1/4".. and the line up looks fairly straight overall with the forward hinge half clecoed in position. The trailing edge is very slightly displaced forward... looks to be .04" (1/25th of an inch). It is visually noticeable... but for a first try this looks pretty good to me. Just wanted to get some opinions before riveting. I could always do another hinge half and try to make it perfect... but the curve in each trailing edge doesn't even match to that kind of tolerance, so I'm thinking this is ok. What do you think?

Martin J Filiatrault
Clarkston, MI
RV-8 #83507 - empennage complete (except fiberglass)
QB wings & fuselage work continues
N657AR reserved
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Have you ever gotten the feeling you were smarter than you could ever prove?
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Old 03-16-2017, 02:46 AM
PCHunt PCHunt is offline
Join Date: Feb 2007
Location: San Diego, CA
Posts: 1,502

Hmmm, are you braggin', or are you complanin' ?

Looks like my standards are a bit too low, 'cuz that looks perfect to me!

Keep building!
Pete Hunt, [San Diego] VAF #1069
RV-6, RV-6A, T-6G

2018 Donation Plus, Gladly Sent
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Old 03-16-2017, 04:35 AM
Tom Martin Tom Martin is offline
Join Date: Jan 2005
Location: Ontario, Canada
Posts: 1,348

Only you can make this decision. The fact that it bothers you enough to post it here makes me think that you will always know it's there. For the cost of a new hinge and a bit of time you can get this to point where you are satisfied.
Use the old hinge to lay out a few holes on the new hinge, where they "should" be. Then trial fit before drilling the rest. A long string pulled tight will help with the alignment, but at the end of the day it is what the eye sees that really matters. It will probably fly the same either way.
Tom Martin RV1 pilot 4.6hours!
CPL & IFR rated
EVO F1 Rocket 1000 hours,
2010 SARL Rocket 100 race, average speed of 238.6 knots/274.6mph
RV4, RV7, RV10, two HRIIs and five F1 Rockets
RV14 Tail dragger flying #153

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St.Thomas, Ontario Canada, CYQS

Last edited by Tom Martin : 03-16-2017 at 04:37 AM.
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Old 03-16-2017, 05:45 AM
Robert Anglin Robert Anglin is offline
Join Date: Mar 2008
Location: houston, texas
Posts: 786
Default Good to go.

Just a little comment here. You may find that after you get up and flying you need to blunt or squeeze you tailing edges to take care of a heavy wing condition. You are more than good with what you have here only you will see it and it is only a distraction to your want to do a perfect job. I understand and complement you on that objective. If you have to do some adjusting after you get flying and most do. you will find your end radiuses changing this much are sometimes a little more. You have a nice tight hinge now, why drill it off and open those holes again for .04" when you may have to move it that much again anyway. You really do have a good thing going here "as Is". I used to judge aircraft at shows, this would not be anywhere close to a deduction only a well know and excepted look. Hope this helps, Yours, R.E.A. III #80888
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Old 03-17-2017, 06:43 PM
Berchmans Berchmans is offline
Join Date: Nov 2009
Location: Anchorage, Alaska
Posts: 404
Default Good Enough

I would say that's good enough and unlikely to have any impact on how the plane flys. If your worried about how it looks parked remember your flaps will always be down when parked.
Burke Wick
Flying RV 8
Anchorage, Alaska
VAF Dues Paid for 2018
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Old 03-17-2017, 07:54 PM
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fl-mike fl-mike is offline
Join Date: Jul 2005
Posts: 907

Not to mention, this is probably the only time in the life of your plane when these two will be in that exact position.
Do the other wing and see if you can do better, then decide!
Mike W
Venice, FL
RV-6A. Mattituck TMX O-360, FP, GRT Sport EFIS
N184WM reserved (RV-8)....tail kit done, slow-build wing done, slow-build fuselage started.
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Old 03-18-2017, 10:40 AM
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AAflyer AAflyer is offline
Join Date: May 2009
Location: Belle Mead, New Jersey
Posts: 287
Default Better than most...

...move on to the next thing.
Bruce Windom
QB RV-8 N148BW
First Flight: Oct '16
AeroSport Power IO-360 180hp w/dual P-Mags
Catto 3-blade, with black carbon spinner.
10" Dynon SkyviewTouch. That's ALL.
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Old 03-18-2017, 02:47 PM
N1Flyer N1Flyer is offline
Join Date: Apr 2009
Location: Port Orange, FL
Posts: 15

Know that better is the enemy of good! Looks great - go with it and ease up on being perfect or you'll never finish. Don't ask how I know:-)
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