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  #1  
Old 04-11-2021, 04:34 PM
JohnBruns JohnBruns is offline
 
Join Date: Dec 2017
Location: Floyds Knobs, IN
Posts: 2
Default Elevator Gusset Rivet/Hole Size.

I am working on my RV-10 elevators. I have a question about hole size for the E-921 Elevator Gusset. Page 9-6 step 4 says to final drill with a #30 drill. Page 9-11 step 6 and page 9-14, step 2 indicate AN470AD4-4 rivets. However, my E-921 Elevator Gussets, E-1007 Rear Spars and E-905 Root Ribs were delivered with final size holes—no orange markings and I have confirmed the hole sizes. The holes in the Elevator Gussets and matching holes on the Rear Spars and Root Ribs are all #40 and match perfectly.

Should I match drill these holes to #30? Or are the plans a little behind the new parts process?


John Bruns
Education and Recreation
Learning a lot and still having fun!
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Learning a Lot and Still Having Fun!
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  #2  
Old 04-11-2021, 06:00 PM
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Mike S Mike S is online now
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Join Date: Sep 2005
Location: Dayton Airpark, NV A34
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Default Welcome to VAF

John, welcome aboard the good ship VAF
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Mike Starkey
VAF 909

Rv-10, N210LM.

Flying as of 12/4/2010

Phase 1 done, 2/4/2011

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"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
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  #3  
Old 04-12-2021, 07:27 AM
alumley alumley is offline
 
Join Date: Nov 2015
Location: Ontario
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Default

I'm assembling my second elevator now. I forget if I had to final drill the gusset or not but I definitely used -4 rivets to attach the gusset to both the root rib and rear spar so go ahead and final drill those 4 holes #30. Note that the root rib attaches to the forward and aft spars with -3 rivets so don't drill out those holes! But the gusset is definitely -4.
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  #4  
Old 04-15-2021, 07:28 AM
JohnBruns JohnBruns is offline
 
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Location: Floyds Knobs, IN
Posts: 2
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Thank you. I appreciate the advice. Up-sized and match drill the holes to #30.
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