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  #1  
Old 04-08-2009, 12:33 PM
thelynns thelynns is offline
 
Join Date: Jan 2008
Location: Vancouver, WA
Posts: 80
Default Rivet Baggage Ribs to 706 bulkhead confusion.

I'm ready to rivet up the F-706 bulkhead and have noticed on the aft side of the 706 spar, the 729 bellcrank rib flange is very close and almost overlaps the holes in the 706 spar that attach the 729 baggage ribs.

Wow, that sounds confusing. A picture is work a thousand words. Please visit my log to see picture details of the problem.

http://www.mykitlog.com/users/displa...og=77306&row=1

Seems I need to trim some away from the 729 rib flange or add a spacer?
I'm stuck.
Thnaks.
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Canopy fitting, RV-7A Tipup
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  #2  
Old 04-08-2009, 01:13 PM
Brockster Brockster is offline
 
Join Date: Feb 2006
Location: Lockport, NY
Posts: 108
Default

I just trimmed the flange of the rib back a little so from the edge of the hole to the edge of the rib was between 1/16 - 3/32 of an inch clearance. I have also seen some whwere they ground little half circles at each hole location. As far as the nut plate just file the small flange on the end of it so it fits better.
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  #3  
Old 04-08-2009, 04:15 PM
thelynns thelynns is offline
 
Join Date: Jan 2008
Location: Vancouver, WA
Posts: 80
Default I'll make shims.

Thanks Paul for your input. I've posted a fix on my log at the following link.

http://www.mykitlog.com/users/displa...og=77319&row=1
I made shims instead of grinding away 729 flange.

I'm thinking as I get further along there will be more issues like this.
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Canopy fitting, RV-7A Tipup
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  #4  
Old 04-09-2009, 04:31 AM
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rzbill rzbill is offline
 
Join Date: Nov 2005
Location: Asheville, NC
Posts: 2,538
Default

I'm sure I didn't use shims, and there was no problem.
Mine is buttoned up, but fairly sure I simply reversed the rivet position you show in the first image. The shop head did not interfere with the flange, or if it did, a very very small flange trim took care of it.
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Bill Pendergrass
ME/AE '82
RV-7A: Flying since April 15, 2012. 750hrs
YIO-360-M1B, mags, CS, GRT EX and WS H1s & A/P, Navworx
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  #5  
Old 04-09-2009, 07:02 AM
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mikehoover mikehoover is offline
 
Join Date: Jan 2005
Posts: 626
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It's been awhile since I did this but I did find a photo that shows I "scalloped" around those holes enough to allow for the rivet shop head on mine. Here's a photo:

http://www.aclog.com/rv-9a/images/Fu...e/DCP_2036.JPG

Mike
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Columbia, SC
www.aclog.com/rv-9a/
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