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09-06-2013, 02:05 PM
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Join Date: Aug 2013
Location: Virginia
Posts: 27
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Help replacing the VS spar after drill/dimple
I need to replace the VS spar (long story), but I've already drilled and dimpled both the skin and the spar flange.
The new spar will need to be drilled, deburred and dimpled so I assume that I'll need to put the already dimpled skin on it and match drill (ream) carefully?
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RV-7
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09-06-2013, 03:12 PM
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Join Date: Nov 2008
Location: Olympia,WA
Posts: 210
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The new spar will already have holes drilled. Just drill em or ream to final size, debur both sides, dimple, prime if desired and rivet. You'll be good to go.
What Jesse and Robert said.
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Arnie Barros
VAF #1401
(N89269) reserved
"Seek to understand before trying to be understood"
Last edited by AlphaCharlieBravo : 09-06-2013 at 04:20 PM.
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09-06-2013, 03:24 PM
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Join Date: Aug 2013
Location: Virginia
Posts: 27
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My question was around the fact that the skin won't sit flush on the spar flange for the match ream because its been dimpled already.
Will cleco'ing the dimpled skin to an undimpled spar mess up my skin dimples?
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RV-7
Slow and steady.
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09-06-2013, 03:24 PM
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Join Date: Feb 2010
Location: Gardnerville Nv.
Posts: 2,828
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You Know....you have to share all stories here.
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7A Slider, EFII Angle 360, CS, SJ.
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09-06-2013, 03:38 PM
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Join Date: Jul 2009
Location: Lee's Summit, MO
Posts: 747
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Match drilling
I think what Arnie is trying to tell you is that you don't need to attach the skin to your new spar before drilling. In other words, don't match drill. Just drill the spar holes up to #40, debur and dimple. It will fit like a glove.
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Robert Williams
Lee's Summit, MO
RV-8 - Empennage & Wings Done
Working on Fuse
O-360-A1A
1946 Cessna 120
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09-06-2013, 03:50 PM
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Join Date: May 2005
Location: X35 - Ocala, FL
Posts: 3,679
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That's right. The prepunched holes are so accurate that you don't have to match drill in a situation like this. If you run into a hole that the rivet won't fit in, you can just chase it lightly with a drill but, usually even by hand.
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Jesse Saint
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09-06-2013, 07:05 PM
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Join Date: Aug 2013
Location: Virginia
Posts: 27
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Thanks all. That's a relief. I was picturing huge, out of control holes due to drilling the skin twice.
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RV-7
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09-06-2013, 07:25 PM
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Join Date: Jan 2005
Location: SC
Posts: 12,887
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One minor thing, after you finish dressing the spar and start riveting, should a rivet not drop right in, run a drill through it and set the rivet.
You will be fine. If this is the only (minor) mistake you make during your build, you are doing good.
Remember, it is not the mistake you make but how you fix it.
Here is a picture of just some of the parts I destroyed during my build. Save the old spar, you can always us it for something later on.
(Click to enlarge.)
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Bill R.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC
www.repucci.com/bill/baf.html
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09-07-2013, 05:18 AM
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Join Date: Aug 2013
Location: Virginia
Posts: 27
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Awesome pic, Bill. Expectations are now set correctly. Thanks.
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RV-7
Slow and steady.
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09-07-2013, 10:33 AM
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Join Date: Nov 2011
Location: Huntersviile, NC
Posts: 215
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Quote:
Originally Posted by N941WR
Save the old spar, you can always us it for something later on.
(Click to enlarge.) |
Like Valentine's Day cards?
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Tom Clark
RV-6 Sold
F1 Rocket
Lake Norman Airpark - 14A
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