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  #1  
Old 02-05-2019, 07:45 AM
mbishop mbishop is offline
 
Join Date: Jan 2016
Location: Tampa
Posts: 112
Default RV-10 Wing Spar Shim Question

I'm about to start riveting my wing skins on and I was wondering how exact I have to be with the main spar being level to the table. I have some wood blocks underneath that get me pretty close to level when it is clamped down.

Should I get my level out and ensure X and Y are both level w.r.t. to main spar? Do you think that the pre-punched holes in the wing ensure that there is no warping in the final product?
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Riveting left wing together (RV-10).
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  #2  
Old 02-05-2019, 07:48 AM
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rleffler rleffler is online now
 
Join Date: Jun 2006
Location: Delaware, OH (KDLZ)
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Quote:
Originally Posted by mbishop View Post
I'm about to start riveting my wing skins on and I was wondering how exact I have to be with the main spar being level to the table. I have some wood blocks underneath that get me pretty close to level when it is clamped down.

Should I get my level out and ensure X and Y are both level w.r.t. to main spar? Do you think that the pre-punched holes in the wing ensure that there is no warping in the final product?
The pre punched holes are just fine.
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  #3  
Old 02-07-2019, 12:24 AM
paul330 paul330 is offline
 
Join Date: Feb 2007
Location: Mpumalanga, South Africa
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When I skinned my wings, I set the spar up on 4 saw horses and shimmed it until everything was level. When I finally fitted the wings and clecoed the rear spar hole, I measured the @#$% out of them and found that they were not as much as 1/16" out anywhere. Final drill the rear spar bolt hole and move on......

Now, it's possible that I am simply an ace builder or that the pre-punched holes would have done the job anyway...........
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  #4  
Old 02-07-2019, 01:00 PM
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longranger longranger is offline
 
Join Date: Mar 2007
Location: 45G, Brighton, MI
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With the wing skins clecoed on, just make sure the inboard and outboard ends of both spars are all parallel with each other.

I didnít trust mine to come out square, so I borrowed a set of adjustable wing stands so I could clamp the wing in place and adjust out any twist before drilling.
http://www.mykitlog.com/users/displa...150366&row=198

It also made a handy fixture for riveting the top skins.
http://www.mykitlog.com/users/displa...=161654&row=89
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RV-7 TU 904KM (reserved)
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1955 Cessna 170B flying since 1982

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