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  #11  
Old 09-10-2023, 01:55 PM
KatanaPilot's Avatar
KatanaPilot KatanaPilot is offline
 
Join Date: Feb 2015
Location: Locust Grove, GA
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If they turn out to be RV-8 flaps and there will be a big delay getting replacements from Vanís, 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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  #12  
Old 09-10-2023, 02:50 PM
toolmanmike toolmanmike is offline
 
Join Date: Sep 2018
Location: Woodbury, PA
Posts: 109
Default RV 8? 7? 9? flaps??

Gents, I believe I may have the wrong flaps!!!
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this is the width of my flaps at the Leading Edge =58" at the rivet line

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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.
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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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  #13  
Old 09-10-2023, 03:06 PM
Ralph Inkster Ralph Inkster is offline
 
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Location: Calgary, Alberta
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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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  #14  
Old 09-10-2023, 03:10 PM
agent4573 agent4573 is offline
 
Join Date: Aug 2019
Location: Mountain view
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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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  #15  
Old 09-10-2023, 03:11 PM
TShort TShort is offline
 
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Location: Indianapolis, IN (KUMP)
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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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  #16  
Old 09-10-2023, 03:22 PM
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Mel Mel is offline
 
Join Date: Mar 2005
Location: Dallas area
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Default Discrepancy??????

Quote:
Originally Posted by Ralph Inkster View Post
"Now please tell me the 7 and 8 Ailerons are the SAME??"
Nope. Looks like you have 8 flaps....
Huh? Question seems to be about ailerons, Answer is about flaps.
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  #17  
Old 09-10-2023, 03:31 PM
PhatRV PhatRV is offline
 
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Location: KAJO
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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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  #18  
Old 09-10-2023, 03:45 PM
Ralph Inkster Ralph Inkster is offline
 
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Location: Calgary, Alberta
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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 didnít note he was now questioning AILERONS..,
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  #19  
Old 09-10-2023, 04:07 PM
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mburch mburch is offline
 
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Quote:
Originally Posted by mburch View Post
My RV-7 flaps measure roughly 56.5" between the rivet lines of the inboard and outboard ribs
Quote:
Originally Posted by toolmanmike View Post
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.
Sorry, I should have specified that I was measuring between the aftmost rivets (widest dimension between end rib rivet lines).
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  #20  
Old 09-10-2023, 04:24 PM
Stevea Stevea is offline
 
Join Date: Jun 2008
Location: San Jose, CA
Posts: 333
Default 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.
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