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09-10-2023, 01:55 PM
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Join Date: Feb 2015
Location: Locust Grove, GA
Posts: 1,134
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If they turn out to be RV-8 flaps and there will be a big delay getting replacements from Van’s, I do have a pair of QB RV-7 flaps. Email me if interested.
Krea dot Ellis at gmail dot com
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Krea Ellis
Locust Grove, GA
DA20-A1 "Princess Amelia" - gone home to Amelia Island
RV-7A Phase 2 (Honored to be Van's "Miss July" 2021) - now at her new home in Lakeville, MN
RV-10ER Phase 2. In paint at Evoke! Penn-Yan IO-540, dual bus SDS EFII, Hartzell composite prop, Showplanes cowl, Airflow Systems A/C, Garmin IFR panel by SteinAir, Aerosport interior, carbon fiber panel and overhead console, Mountain High O2
EAA Technical Counselor
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09-10-2023, 02:50 PM
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Join Date: Sep 2018
Location: Woodbury, PA
Posts: 109
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RV 8? 7? 9? flaps??
Gents, I believe I may have the wrong flaps!!!
this is the width of my flaps at the Leading Edge =58" at the rivet line
This is the width at the trailing (uncut) end = 61"
Now please tell me the 7 and 8 Ailerons are the SAME?? I have attached a pic of mine. 54" at the widest.
MBurch- I measured center of rivets to rivets but the inboard rib is on a diagonal. So the measurements would vary depending on where you go from. However, all my measurements were longer than you stated.
Toolman
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Toolmanmike
PA, USA
RV-7 sn75068
Emp done.
Wings done
Fuselage-?? Working on it!
Dues paid
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09-10-2023, 03:06 PM
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Join Date: Feb 2008
Location: Calgary, Alberta
Posts: 2,143
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"Now please tell me the 7 and 8 Ailerons are the SAME??"
Nope. Looks like you have 8 flaps....
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Ralph
Now retired - my builder assist shop now closed, 
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09-10-2023, 03:10 PM
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Join Date: Aug 2019
Location: Mountain view
Posts: 813
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My QB ailerons were labelled 7/8 so I think you're safe there. Was there not a part number on your flaps when they were delivered?
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www.rv7build.com - out of date, will be updated soon
N69ER - built and flying - 2022 Bronze Lindy
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09-10-2023, 03:11 PM
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Join Date: Jan 2005
Location: Indianapolis, IN (KUMP)
Posts: 1,110
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My -8 aileron measures the same, 54”
Note my measurement above for my -8 flap is the entire length of the trailing edge, as built (slow build). Wings are not mated to fuse yet so the flaps are untouched.
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Thomas Short
KUMP - Indianapolis, IN / KAEJ - Buena Vista, CO
RV-10 N410TS bought / flying
RV-8 wings / fuse in progress ... still
1948 Cessna 170 N3949V
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09-10-2023, 03:22 PM
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Join Date: Mar 2005
Location: Dallas area
Posts: 11,899
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Discrepancy??????
Quote:
Originally Posted by Ralph Inkster
"Now please tell me the 7 and 8 Ailerons are the SAME??"
Nope. Looks like you have 8 flaps....
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Huh? Question seems to be about ailerons, Answer is about flaps.
__________________
Mel Asberry, DAR since the last century. Over 1,100 certifications accomplished. Discount for Veterans, Law Enforcement, Fire Fighters.
EAA Flight Advisor/Tech Counselor, Friend of the RV-1, Lifetime EAA.
Recipient of EAA Tony Bingelis Award and Wright Brothers Master Pilot Award
USAF Vet, High School E-LSA Project Mentor.
RV-6 Flying since 1993 (sold)
<rvmel(at)icloud.com>
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09-10-2023, 03:31 PM
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Join Date: Mar 2018
Location: KAJO
Posts: 1,113
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I don't know the difference between the -7 and -8 flap.
But on my RV8, when I first fitted the flap to the fuselage, the inboard end was a bit too long, maybe from 1/4 to 1/2 inch. I had to carefully trim the end so that the upper flap skin is contoured to fit flush with the curvature of the fuselage. The picture is the finished product and there was about 1/16 gap between the upper skin of the flap to the fuselage skin.
So in summary, my -8 flaps were a bit on the long side and I had to trim them on both sides.
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RV8 (N38PV)
Days to First Flight: 999
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09-10-2023, 03:45 PM
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Join Date: Feb 2008
Location: Calgary, Alberta
Posts: 2,143
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RV7 & 8 ailerons take same spar so are the same.
RV7 & 8 wing rear spar webs are the same, difference being a longer riveted on tab on the 8 where it bolts to the fuselage.
That longer tab & fuselage shape difference requires a slightly longer flap on the 8.
The OP was originally discussing FLAPS, so my prior reply was based on FLAPS, I didn’t note he was now questioning AILERONS..,
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Ralph
Now retired - my builder assist shop now closed,
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09-10-2023, 04:07 PM
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Join Date: Feb 2005
Location: Oregon
Posts: 1,765
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Quote:
Originally Posted by mburch
My RV-7 flaps measure roughly 56.5" between the rivet lines of the inboard and outboard ribs
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Quote:
Originally Posted by toolmanmike
MBurch- I measured center of rivets to rivets but the inboard rib is on a diagonal. So the measurements would vary depending on where you go from. However, all my measurements were longer than you stated.
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Sorry, I should have specified that I was measuring between the aftmost rivets (widest dimension between end rib rivet lines).
__________________
Matt Burch
RV-7 (last 90%)
http://www.rv7blog.com
Any opinions expressed in this message are my own and not those of my employer.
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09-10-2023, 04:24 PM
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Join Date: Jun 2008
Location: San Jose, CA
Posts: 333
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flap skin trim required?
Uhm, don't the 7 and 8 have the same wing....therefore the same ailerons and flaps? (Sorry, don't have 7 or 8 prints to look at drawings.) The only difference would be how the flaps are trimmed where they meet the fuselage.
My 6 flaps required trimming at the fuselage end. Of course...that was way back in the jurasic build era when we had to smelt our own aluminum. 
__________________
Steve Allison
RV-6A - sloooowwww build
First flight - 3/8/14
Phase II - 5/19/14
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